------------------------------------------------------------ Command : 8BITCONV ON/OFF Mnemonic : 8 Default : ON Parameter : ON The high-order bit IS NOT stripped in Converse Mode. OFF The high-order bit IS stripped in Converse Mode. Refer to : AWLEN, PARITY, RXBLOCK ------------------------------------------------------------ 8BITCONV permits packet transmission of eight-bits data in the converse mode. If 8BITCONV is OFF, the high-order bit (bit seven) of character received from the terminal is removed before the characters are transmitted in a packet. The standard ASCII character set requires only seven bits. The eight or final bit is used as a parity bit or ignored. NOTE: Setting bit seven in text characters transmitted over the air may cause confusion at the other end. If you need to transmit eight-bit data but don't want all the features of Transparnt Mode, set 8BITCONV ON and AWLEN 8. This may be desirable if you are using a special non- ASCII character set. Since commands require only the standard seven-bit ASCII character set, bit seven is always removed in the Command Mode. Set this command to ON if you use RXBLOCK. ------------------------------------------------------------ Command : nMACRO text Mnemonic : M Default : Empty Parameter : n 0 through 4 identifies a macro command or data string. Refer to : none ------------------------------------------------------------ The Macro commands start with a numeric character 0-4. Five macros can be stored. 5 macros may not exceed a total of 119 characters. To set the macro's contents, type the following sequence: 1) The macro number; 2) The letter M; 3) Space Bar; 4) The macro text or contents; 5) Carriage return. For example, at the command prompt; type : cmd: 2M CONNECT W6YEY From this point on, if you type 2M at the cmd: prompt in the command mode, the TNC will display the contents of macro No.2. cmd: 2M CONNECT W6YEY To erase a macro's contents, type a new macro over it or enter the number, "M", a "Space Bar", and "%" followed by . You can install an entire string of commands in a single macro. Type the macro number and M, followed by the specific commands separated by a slant bar (/). Example: cmd: 3M AX25L2V2 ON/TXDELAY 50/FRACK 4 The entering of a macro command is subject to the same 119 character limit as any normal command. After a macro command has put the TNC in Converse or Transparent mode, you cannot use a macro to return to the Command Mode. ------------------------------------------------------------ Command : 3RDPARTY ON/OFF Mnemonic : 3RD Default : ON Parameter : ON Allow any station to access your BBS. OFF Allow to access the BBS only station specified by MYMCALL. Refer to : MBOD, MYMCALL ------------------------------------------------------------ This command sets whether any station can be allowed to use your message board as an open BBS.If 3RDPARTY is OFF, your message board is effective for only personal use. ------------------------------------------------------------ Command : AX25L2V2 ON/OFF Mnemonic : A Default : ON Parameter : ON The TNc uses AX.25 level 2 version 2.0 protocol. OFF The TNc uses AX.25 level 2 version l.0 protocol. Refer to : none ------------------------------------------------------------ Some implementations of the earlier version of AX.25 protocol will not repeat version 2.0 AX.25 packets properly. This command provides compatibility with those older packet controllers. ------------------------------------------------------------ Command : ABAUD n (0 - 19200) Mnemonic : AB Default : 1200 Parameter : n Specifies the data rate of signaling speed in baud, on the serial I/O terminal port. The "n" should be 0, 300, 600, 1200, 2400, 4800, 9600 and 19200. Refer to : RESTART, RESET, RAMTEST ------------------------------------------------------------ If the ABOUD is set to 0, the TNC goes into AUTO-BAUD routine. If AUTO-BAUD is enabled you will see the following message: Please type (*) for the auto-baud routine. If this happens, type four or five asterisks (*), at one second interval, until you see the sign-on message. The RESET command does not change the ABAUD to a default value. If RAMTEST is initiated, the ABAUD value return to factory default of 1200 baud. ------------------------------------------------------------ Command : AFILTER n1 - n4 Mnemonic : AF Default : $0 Parameter : n1 to n4 specifies the character which will be filtered out during packet reception in the Converse Mode. Refer to : MFILTER ------------------------------------------------------------ Sometimes you need to filter out the special character(s) during packet communication in the Converse Mode. Especially, if incoming packet control character affects some type of terminals become inoperative. You can specify up to four characters to be filtered out from the incoming packet signal. Example: cmd: AFILTER $80 This example shows that all control characters except and will be filtered out during packet reception. If you want to specify more than one character, separate the character by "," as shown in the following example. cmd: AFILTER $11, $13, $1A, $1E AFILTER only affects in receiving in the Converse Mode. This command has no effect in the Monitor Mode and the Transparent Mode. To clear the contents in the AFILTER, enter "0" after the AFILTER command. cmd: AFILTER 0 ------------------------------------------------------------ Command : AUTOLF ON/OFF Mnemonic : AU Default : ON Parameter : ON A line feed character is sent to the terminal after each carriage return character . OFF A is NOT sent to the terminal after each . Refer to : LFADD, RXBLOCK ------------------------------------------------------------ AUTOLF is included to maintain compatibility with other packet radio controllers. If your display terminal does not line-feed during packet reception, check this command. AUTOLF affects only terminal displays and it does not affect sending packet. If the other station you are talking to reports overprinting of packets from your station, use LFADD command. To use RXBLOCK command, set AUTOLF OFF to accurately display the data block length. ------------------------------------------------------------ Command : AWLEN n Mnemonic : AW Default : 7 Parameter : n 7 or 8 specifies the number of data bits per word. Refer to : 8BITCONV, PARITY, RESTART ------------------------------------------------------------ The parameter value defines the digital word length used by the serial input/output (IO) terminal port and your computer or terminal program. The new value affects only after RESTART or power On/Off reset. NOTE: Use default value (7) for most packet operations, such as conversation, working electronic mail and bulletin board systems and transmission of ASCII files. If eight-bit words are sent to the TNC in the Command or the Converse modes, the eighth bit is normally removed, leaving a standard ASCII character, regardless of the setting of AWLEN. All eight data bits of each character must be retained to send executable files or other special data. NOTE: Set AWLEN to 8 and use the Transparent Mode. You can also use Converse Mode and set AWLEN 8 and 8BITCONV ON. However, you must precede the Converse Mode special characters with the PASS character in the data you send. NOTE: Set AWLEN to 8 if you use RXBLOCK command. ------------------------------------------------------------ Command : AXDELAY n Mnemonic : AXD Default : 0 Parameter : n 0 - 120 specifies a key-up delay for voice repeater 10mS intervals. Refer to : AXHANG, TXDELAY, DWAIT ------------------------------------------------------------ AXDELAY specifies the period of time the controller will wait, in addition to the normal delay set by TXDELAY, after keying the transmitter and before data is sent. Packet groups using a standard "voice" repeater to extend the range of the local network may need to use this feature. Repeaters with slow electromechanical relays, split sites, auxiliary links, or other circuits which delay transmission for some time after the RF carrier is present, require some amount of time to get the RF on the air, If you are using a repeater that has not previously been used for packet operations, try various values to find the best value. If other stations have been using the repeater, check with them for the proper setting. AXDELAY acts in conjunction with AXHANG. ------------------------------------------------------------ Command : AXHANG n Mnemonic : AXH Default : 0 Parameter : n 0 - 250 specifies voice repeater hang time in 100mS intervals. Refer to : AXDELAY, DWAIT ------------------------------------------------------------ A numeric value can be used to increase channel efficiency when an audio repeater has a hang time greater than 100 milliseconds. For a repeater with a long hang time, it is not necessary to wait for the repeater key-up delay after keying he transmitter if the repeater is still transmitting. When the TNc has heard a packet sent within the hang period, it does not add the repeater key-up delay (AXDELAY) to the key-up time. The key-up time is determined by TXDELAY + DWAIT. Therefore, set AXHANG should be set less than repeater hang time. If you are using a repeater that hasn't been used for packet operation before, try various values to find the best value. If other packet stations have been using the repeater, ask them for the appropriate setting. ----------------------------------------------------------- Command : BEACON EVERY/AFTER n Mnemonic : B Default : EVERY 0 Parameter : EVERY Send the beacon at regular intervals. AFTER Send the beacon once after the specified time interval without packet activity. n 0-250 specifies timing in 10 Sec. intervals. 0 Zero disables off the beacon function. Refer to : BTEXT, UNPROTO ------------------------------------------------------------ The BEACON command sets the conditions under which your packet beacon will be transmitted. NOTE: A beacon frame contains the text you have typed into the BTEXT message in a packet addressed 'CQ' or other UNPROTO address. NOTE: A beacon frame may be sent directly, and also sent via the digipeat addresses specified by the UNPROTO command. When the keyword EVERY is specified, a beacon packet is sent every n times 10 seconds. This mode can be used to transmit packets for testing purposes. When AFTER is specified, a beacon is sent after n times 10 seconds have passed without packet activity. NOTE: The beacon is sent only once until further activity is detected. This mode can be used to send announcements or test messages only when packet stations are on the air. NOTE: Proper choice of 'n' avoids cluttering a busy channel with lots of unnecessary transmissions. ------------------------------------------------------------ Command : BBSMSGS ON/OFF Mnemonic : BBS Default : OFF Parameter : ON Modify display message format to terminal. OFF Standard display message format. Refer to : CONK, MONITOR, MBOD, NEWMODE, NOMODE, USERS ------------------------------------------------------------ When BBSMSGS is set to ON, the TNC will output the terminal with modified message format. The character is added to in front of the display message. *** CONNECTED *** DISCONNECTED *** retry limit exceeded *** xxx Busy *** FRAME sent *** FRAME rcvd In the above example, the display message will include the . When this command is active, "*** Connect request: xxxx " will not be displayed. If BBSMSGS ON and CONOK OFF, the TNC will respond to all connect request that you are busy, but the terminal will not output the "*** Connect request: xxx " message. This feature can be used while you are receiving an important data from the other station, and you do not want to disturb by the connect request message. CONOK OFF will reject all connection request. Set CONOK ON if you use BBS feature. ------------------------------------------------------------ Command : BEKONDEL ON/OFF Mnemonic : BK Default : ON Parameter : ON The sequence is echoed when a character is deleted from the input line. OFF The character <\> is echoed when a character is deleted. Refer to : REDISPLA ------------------------------------------------------------ BKONDEL determines how character deletion is displayed in Command or Converse mode. The sequence updates the video display screen. NOTE: Set BKONDEL ON if you are using a video display terminal or computer. On a printing terminal the sequence will result in over-typed text. NOTE: Set BKONDEL OFF if you have a paper output display, or if your terminal does not respond to the character . The TNc displays a for each character you delete. You can see a display of the corrected input by typing the redisplay-line character set by the command REDISPLA. ------------------------------------------------------------ Command : BETEXT text Mnemonic : BT Default : Empty Parameter : Any combination of characters and spaces, up to a maximum length of 239 characters. Refer to : BEACON, PASS ------------------------------------------------------------ BETEXT is the content of the data portion of a beacon packet. The default text is an empty string (no message). NOTE: BEACON packets are discussed in more detail under the BEACON command. You can send multiple-line messages in your beacon by including characters in the text. is inserted by typing the PASS character(CTRL-V) before the . NOTE: The pass character is set by the PASS command. If you enter a text string longer than 239 characters, the command line is ignored and the following error message appears. ?too long NOTE: Use a "%" or "&" as the first characters in the beacon text to clear the BTEXT text without issuing the RESET command. Although the subject of beacon is conventional in packet circles, the following four suggestions will help you use the feature intelligently and benefit the packet community: 1) Do not type your call sign in BTEXT. The normal packet header shows it for you. 2) Do not fill your BTEXT with screen graphics such as asterisk, parentheses, colons and semicolons, etc. Use BTEXT for some significant information. 3) Do not use BTEXT to tell the world that your "DIGIPEATER IS ON" and "BUFFER SAVE TO DISK IS ENABLE". Put this information in your CTEXT message so that it is seen by any station that connects you, the only one who can make use of the information. 4) After you have beaconed for a week or two and the packet community has learned who and where you are, follow the practice used by more experienced packeteers. SET BEACON EVERY 0 !!! ------------------------------------------------------------ Command : BUDLIST ON/OFF Mnemonic : BU Default : OFF Parameter : ON Ignore frames from station which are not in the LCALLS list. OFF Ignore frame from stations which are in the LCALLS list. Refer to : LCALLS, MONITOR ------------------------------------------------------------ BUDLIST works together with the LCALLS command, which allows you to set up a call sign list. These commands determine which packets are displayed when you set MONITOR to ON. BUDLIST allows you to specify whether the call signs in the list are those you wish to ignore, or if they are the ones you want to displayed. If you want your TNC to display packets only from a limited list, use LCALLS to enter the list of call signs, and then set BUDLIST to ON. This feature enables you to have the TNC watch for a particular station while you converse with another station. If you want your TNC to ignore packets from a limited list, use LCALLS to enter the list of call signs, and then set BUDLIST to OFF. This is handy when you want to ignore a bulletin board on the frequency, for example, while you monitor other conversations. ------------------------------------------------------------ Command : CONNECT call1[VIA call2[,call3...,call9]] Mnemonic : C Default : Immediate command Parameter : call1 Call sign of the distant station to which you wish to be connected. call2 Optional call sign(s) of up to eight digipeaters via which you want to be repeated to reach the other station. Refer to : DISCONNE ------------------------------------------------------------ CONNECT sends a connect request to station 'call,' directly or via one or more digipeaters. Each call sign can include an optional SSID "n", immediately after the call sign. The part of the command line shown in brackets below is optional. The double-bracketed text, 'call3...,call9' is also optional and is used only when 'VIA call2' is used, that is, when you are connecting through one or more digipeaters. (The brackets and quotation marks are used in this text only for clarity. Do not type them!) VIA call2[,call3...,call9] NOTE: Type the digipeater fields in the exact sequence you wish to use to route your packets to the destination station "call." If you type CONNECT while your TNC is already connected, or trying to connect to or disconnect from another station, your monitor will display. Link state is:CONNECT in progress If the other station does not "ack" your connect request after the number of tries specified by RETRY, the CONNECT command is canceled and your monitor displays: cmd: *** Retry count exceeded *** DISCONNECTED: (call sign) To connect directly to W6YEY, you would type: CONNECT W6YEY (or C W6YEY) To connect to W6YEY using W6UOU (with whom you can easily connect) and W6WNE (who is near W6YEY) as digipeaters, type: CONNECT W6YEY VIA W6UOU, W6WNE Type CONNECT or 'C' without arguments to see the link status and the number of unacknowledged, outstanding packets. ------------------------------------------------------------ Command : CALIBRA Mnemonic : CAL Default : Immediate Command Parameter : None Refer to : None ------------------------------------------------------------ CALIBRA is an immediate command that provides a means to key your transmitter and send continuous AFSK tone modulation. Use the CALIBRA command to measure transmitter modulation and other performance characteristics. Commands available in the calibration routine are : Toggles the transmitted audio between "MARK" and "SPACE" tones. D Alternates the transmitted mark and space tones at a rate set by the radio port rate. (HBAUD) K Toggles the PTT line between ON and OFF. Q Quits the calibration routine, ------------------------------------------------------------ Command : CANLINE n Mnemonic : CAN Default : $18 Parameter : n 0 to $7F (o to 127 decimal) specifies an ASCII character code. Refer to : CANPAC ------------------------------------------------------------ CANLINE changes the CANCEL-LINE input editing command character. The parameter "n" is the ASCII code for the character you want to use to cancel an input line. The following example show how to enter the code in hex and decimal. CANLINE $15 (hex) CANLINE 21 (decimal) Either method sets the cancel-line character to . When you use the CANLINE character to cancel an input line in the Command Mode, the line is terminated with a character and new prompt (cmd:) appears. When you cancel a line in the Converse Mode, only the and a new line appear. NOTES: 1) You can cancel only the line you are currently typing. 2) Once you type a , you cannot use the cancel-line character to cancel an input line. 3) Use CANPAC character to cancel the entire packet. 4) If you send-packet character is not , the cancel-line character cancels only the last line of a multiline packet. Like all other input editing features, line cancellation is disable in the Transparent Mode. ------------------------------------------------------------ Command : CANPAC n Mnemonic : CANP Default : $19 Parameter : n 0 to $7F (0 to 127 decimal) specifies an ASCII character code. Refer to : CANLINE ------------------------------------------------------------ CANPAC changes the CANCEL-PACKET input editing command character. The parameter "n" is the ASCII code for the character you want to type in order to cancel an input packet. NOTE: You can enter the code in either hex or decimal. When you cancel a packet in the Converse Mode, the line is terminated with a character and a new line. NOTE: You can only cancel the packet that you care currently entering. Once you have typed the send-packet character, or waited PACTIME (if PACTIME is enable), the packet cannot be canceled even if it has not been transmitted. Like other input editing features, packet cancellation is disabled in the Transparent Mode. The CANCEL-PACKET character also cancels the display output in the Command Mode. If the TNC is in the Command Mode and you type the CANCEL-PACKET character, any characters that would be typed on the screen (except those echoed) are "discarded" by the TNC. NOTES: 1) Typing the cancel-output character a second time restores normal output. 2) To see how this works, type DISPALY followed by a . The command list display will stop and you will not see any response from the TNC. To verify that the display is back to normal, type , and then type DISPLAY again. Use the CANCEL-DISPALY feature if you inadvertently do something that cause the TNC to generate large amounts of output to the terminal, such as entering the DISPLAY command or setting TRACE ON. NOTE: If the TNC is in the Converse or Transparent Mode and you want to cancel display output, you must exit to the Command Mode before you type the CANCEL-PACKET character. ------------------------------------------------------------ Command : CBELL ON/OFF Mnemonic : CB Default : OFF Parameter: ON Three BELL characters ($07) are sent to your terminal with the '*** CONNECTED to (call sign)'message. OFF BELLS are not sent with the CONNECTED message. Refer to : none ------------------------------------------------------------ NOTES: 1) Set CBELL ON if you want to be notified whenever someone connects to your station. 2) If CBELL is on and MFILTER contains the character ($07), you can be sure that whenever your terminal beeps there is a connection for you. At no other time will you hear a beep while the TNC is in the Packet Mode. 3) This feature works only the stream is set to "K" when someone connected to MYMCALL. ------------------------------------------------------------ Command : CHECK n Mnemonic : CH Default : 30 Parameter : n 0 to 250 specifies the check time in 10 seconds intervals. 0 Zero disables this feature. Refer to : AX25L2V2, TOUT ------------------------------------------------------------ CHECK sets a time-out value for a packet connection, and depends on the setting of AX25L2V2. Without the CHECK feature, if your TNC was linked or 'connected' to another station and the other station seemed to 'disappear', your TNC would remain in the connected state indefinitely, refusing connections from other stations. This might happen if propagation changes unexpectedly or an intermediate digipeater station fails or is shut down while you and the other station are connected 'via' that digipeater. Your TNC tries to prevent this sort of 'lockup' from occurring by sending a new connect request packet when specified time elapses without any packets being received from the other TNC. If Perversion 2 link is inactive for CHECK times ten seconds, your TNC tries to save the link by starting a reconnect sequence. The TNC enters the 'connect in progress' state and sends SABM (connect request) frames. In addition, the TNC adds a random time of up to 30 seconds each time CHECK is used. NOTE: If AX25L2V2 is ON and packets have not been received from the other station for 'n' times 10 seconds, your TNC sends a 'check packet' to test if the link still exists to the other station. The 'check' packet frame contains no information, but is interpreted by the other station's TNC to see if it is still connected. If the other station's TNC is still connected, it sends an appropriate response packet. ------------------------------------------------------------ Parameter : CIDCON EVERY/AFTER n Mnemonic : CID Parameter : EVERY Send the Morse Code ID at regular interval. AFTER Sends the Mores Code ID once after the specified time interval with no packet activity. n 0-250 specifies the Morse Code ID timing in 10 second intervals. 0 Zero turns off the Morse Code ID. Refer to : CWID ------------------------------------------------------------ The CIDCON command sets the conditions under which your Mores Code ID will be transmitted. NOTES: 1) The Morse Code ID contains the text that you have typed into the CWID. 2) The Mores Code is transmitted approximately 20WPM (Word Per Minute) and the Morse Code is being keyed by the AFSK modem using their tones. NOTE: Since the CIDCON is sending your text by a real Mores Code, the other station's TNC cannot display any message. This feature allows to notify you to the other stations who are not using the packet communication. ------------------------------------------------------------ Command : CMDTIME n Mnemonic : CM Default : 1 Parameter : n 0 to 250 specifies time-out value in 1 second intervals while in Transparent Mode. Refer to : COMMAND, TRANS ------------------------------------------------------------ If 'n' is 0 (zero) , you will have to send the BREAK signal or interrupt power to the TNC to exit from Transparent Mode. CMDTIME sets the time-out value in Transparent Mode. A guard time of 'n' seconds allows escape to the Command Mode from the Transparent Mode, while permitting any character to be sent as data. The same Command Mode entry character (default ) that is used to exit from the Converse Mode is also used to exit the Transparent Mode, although the procedure is different. NOTES: 1) The Command Mode entry character is set by COMMAND. 2) Three Command Mode entry character must be entered less than 'n' seconds apart, with no intervening characters, after a delay of 'n' seconds following the last characters you typed. 3) After a final delay of 'n' seconds, the TNC exits the Transparent Mode and enters the Command Mode. 4) You will then see the normal Command Mode prompt: cmd: The following diagram illustrates this timing: last first second third TNC terminal command command command now in input mode mode mode command | entry entry entry mode | character character character | | | | | | | | | | | | | | | | | | | | | |<--- longer--->|<---shorter-->|<--shorter-->|< -- n --->| than 'n' than 'n' than 'n' ------------------------------------------------------------ Command : CMSG ON/OFF Mnemonic : CMS Default : OFF Parameter : ON The recorded CTEXT message is sent as the first packet after a connection is established by a connect request from another station. OFF The text message is not sent at all. Refer to : CTEXT, DTEXT, CMSGDISC ------------------------------------------------------------ CMSG enables or disables automatic transmission of the CTEXT or DTEXT message when your TNC accepts a connect request from another station and disconnect it by another station. If CMSGDISC is OFF, only CTEXT is sent. If CMSGDISC is ON, DTEXT is sent. (If no message is in the DTEXT and there is a message in CTEXT, the CTXT is sent instead of DTEXT and link is disconnected automatically. NOTES: 1) Set CMSG ON to tell callers that you are not available to answer calls manually when they connect to your TNC. 2) Set CMSG OFF when available to operate or answer calls manually. ------------------------------------------------------------ Command : CMSGDISC ON/OFF Mnemonic : CMSGD Default : OFF Parameter : ON Cause an automatic disconnect upon completion of CTEXT or DTEXT message. OFF The TNC will remain connected after it sends the CTEXT except that if there is a message in DTEXT. Refer to : CTEXT, DTEXT, CMSG ------------------------------------------------------------ Normally, you will want to set CMSGDISC to ON. If CMSGDISC is set to OFF and another station connect to you, your station will remain in a connected state until either you or the other station issue a DISCONNECT. This feature helps prevent your station from being hang up by a distant station that connects you, but for some reason cannot disconnect, such as fading band conditions. If both CMSG and CMSGDISC are set to ON, link is disconnected after sending out DTEXT message (if there is no message in DTEXT, CTEXT will replace the DTEXT). If no messages in CTEXT and DTEXT, the link is also disconnected as normal disconnect. Normal disconnect process is performed regardless the setting of CMSG. NOTE: If CMSGDISC is set to ON, make sure that the CMSG is also ON. If the CMSG is set to OFF, the link will be disconnected after you sends out the first information frame. NOTE: CMSGDISC will return to OFF state if you initiate a connect request to the other station. It also return to OFF state, although you use the K stream switch, ------------------------------------------------------------ Command : COMMAND n Mnemonic : COM Default : $03 Parameter : n 0 to $7F (0 to 127 decimal) specifies an ASCII character code. Refer to : CMDTIME, CONVERSE, TRANS ------------------------------------------------------------ COMMAND is used to change the Command Mode entry character. You can enter the code in either hex or decimal. Type the COMMAND character to enter the Command Mode from Converse Mode. You will not see a response if you type the Command Mode entry character while the TNC is already in the Command Mode. To enter the Converse Mode type: CONVERSE Now, all characters typed on the keyboard and characters sent from a disk or tape files are transmitted as packet data. To return to the Command Mode, type . The Command Mode prompt appears to indicate a successful exit to the Command Mode. The display might look like this: cmd: CONVERSE Hello World! I'm on the air on packet radio! [type ] cmd: Refer to the CMDTIME and TRANS to escape from the Transparent Mode. ------------------------------------------------------------ Command : CONMODE CONVERSE/TRANS Mnemonic : CONM Default : CONVERSE Parameter : CONVERSE Your TNC automatically enters the Converse Mode when a connection is established. TRANS Your TNC automatically enters the Transparent Mode when a connection is established. Refer to : CONVERSE, TRANS ------------------------------------------------------------ CONMODE selects the mode your TNC uses after entering the CONNECTED state. The connection may result either from a connect request received from another station, or a connection initiated by a CONNECT command that you have typed. NOTES: 1) Set CONMODE to CONVERSE for most packet operations. 2) Set CONMODE to TRANS if you are using the Transparent Mode for a bulletin board program, so that the correct mode will be entered when your bulletin board receives a connect request. 3) If the TNC is already in Converse or Transparent Mode when the connection is completed, the mode will not be changed. ------------------------------------------------------------ Command : CONOK ON/OFF Mnemonic : CONO Default : ON Parameter : ON Connect requests from other stations are accepted. OFF Connect requests from other stations are not accepted. Refer to : BBSMSGS, USERS ------------------------------------------------------------ The CONOK command determines the action that the TNC will take when it receives a connect request from another stations. If CONOK is set to ON, the request is acknowledged, the normal connect message is displayed, and the TNC will enter either the Converse or Transparent Mode (depending upon how you have CONMODE set.) If CONOK is set to OFF and the TNC is not in the Transparent Mode, it will display a connect request message: Connect request : The TNC also issue a DM packet, like a "busy signal". to the requesting station. If you wish, you can then issue your own connect command. When your TNC receives a DM packet in response to a connect request, it will display: *** station busy If you are connected with several another stations (connected same number of stations set by USERS), your TNC will respond to the same as above. If, for example, you wish to leave your station on as a digipeater, you could set CONOK to OFF until you are ready to communicate with another station. When another station attempts to connect to your TNC, it will be able to see that your station is not available for a connection, but can still be used as a digipeater. ------------------------------------------------------------ Command : CONPERM ON/OFF Mnemonic : CONP Default : OFF Parameter : ON The current connection on the current channels is not allowed to enter the disconnected state. OFF The current channel can be connected to and disconnected from other stations. Refer to : RELINK, RETRY, TRIES ------------------------------------------------------------ When it is ON, CONPERM forces the TNC to maintain the current connection, even when frames to the other station exceed RETRY attempts for an acknowledgment. RESTART and power off/on cycling do not affect this connected state. If disconnection is necessary, set this command to OFF and proceed the normal disconnect sequence. CONPERM works only when a connection is established. It functions on a channel-by-channel basis when multiple connections are allowed. CONPERM allows connections on other channels to operate normally. For example, automatic disconnect based on RETRY, when used under conditions such as: * Certain networking applications. * Meteor scatter. * Other noisy, less reliable links. CONPERM ON may be advantageous when you use full-duplex continuous mail forwarding or traffic links. ------------------------------------------------------------ Command : CONSTAMP ON/OFF Mnemonic : CONS Default : OFF Parameter : ON Connect status messages are time stamped OFF Connect status messages are not time stamped. Refer to : DAYTIME, DAYUSA ------------------------------------------------------------ CONSTAMP activates time stamping of *** CONNECTED status messages. If CONSTAMP is ON and DAYTIME (the TNC's internal clock) is set, date and time information generated in the TNC is available for bulletin-board programs or other host computer applications. Date and time must be set initially by the DAYTIME command before time stamping will occur. For example, if CONSTAMP is ON and the date and time have been set in the TNC, a connect and disconnect sequence appears as follows: cmd: connect W6YEY cmd: 10:55:23:26 *** CONNECTED to W6YEY cmd: disconnect cmd: 10:55:59:26 *** DISCONNECTED: W6YEY The CONNECT and DISCONNECT command can be abbreviated as shown below. The results are identical. cmd: c W6YEY 10:56:22:18 *** CONNECTED to W6YEY cmd: d 10:56:32:29 *** DISCONNECTED: W6YEY ------------------------------------------------------------ Command : CONVERSE Mnemonic : CONV or K Default : Immediate Command Refer to : none ------------------------------------------------------------ CONVERSE is an immediate command that causes the TNC to change form the Command Mode to the Converse Mode. When the TNC is in the Converse Mode, all characters typed from the keyboard or sent from a disk file are processed and transmitted by your radio. NOTE: To return the TNC to the Command Mode from the Converse Mode,type the Command Mode entry character (default is ). ------------------------------------------------------------ Command : CPACTIME ON/OFF Mnemonic : CP Default : OFF Parameter : ON Packet transmit timer is used in the Converse Mode. OFF Packet transmit timer is not used in the Converse Mode. Refer to : PACTIME ------------------------------------------------------------ CPACTIME activates automatic, periodic transmission of packets while the TNC is in the Converse Mode. CPACTIME may be used for several types of computer communications bulletin board or host computer operation when you do not want the full Transparent Mode features. NOTES: 1) When CPACTIME is ON, characters are packetized and transmitted periodically like they are in the Transparent Mode. Local keyboard editing and display features of the Converse Mode are available; software flow control can be used. 2) Refer to the PACTIME command, (which controls the rate and mode of packet assembly) for a discussion of how periodic packetizing works. 3) Set a CR OFF in this mode. When a CR is ON, the send- packet character is inserted in the data being packetized even though it was not typed. 4) To include characters in transmitted packets, set SENDPAC to a character not normally used (e.g., ); the TNC then treats a as an ordinary character. Setting CPACTIME ON transmits your text soon after you type it, in short bursts of a few characters. The other station may break in at will. Some operators find it easier to chat in this mode; long delays are eliminated while long packets are being typed. ------------------------------------------------------------ Command : CR ON/OFF Mnemonic : CR Default : ON Parameter : ON The send-packet character, normally , is added to all packets sent in the Converse Mode. OFF The send-packet characters is not added to packets. Refer to : SENDPAC ------------------------------------------------------------ When CR is set to ON, all packets that are sent in the Converse Mode will include, as the last character of the packet, the send-packet-character. This character causes the packet to be sent. If CR is set to OFF, the send-packet character is interpreted only as a command to the TNC, and is not included in the packet. In addition, it will not be echoed to the terminal. Set CR ON and SENDPAC to $0D for a natural conversation mode. each line is sent whenever you enter a , and arrives at the other station with a at the end of the line. NOTE: If the other station reports overprinting of the lines on his display, you can set LFADD to ON or the other station can set AUTOLF to ON. ------------------------------------------------------------ Command : CSTATUS Mnemonic : CS Default : Immediate command Refer to : CONPERM ------------------------------------------------------------ CSTATUS is an immediate command that is used during multiple connections. When you type CSTATUS, your monitor displays: * The number of each logical channel. * The link state of all ten logical channels. * The current input/output channel - the one you are using. * Whether each channel connection is 'permanent.' (Refer to CONPERM) Depending upon your use of multiple connections and USERS command, CSTATUS will display the following. NOT CONNECTED TO ANY STATION ============================ cmd: CS A stream - IO Link state is: DISCONNECTED B stream - Link state is: DISCONNECTED C stream - Link state is: DISCONNECTED D stream - Link state is: DISCONNECTED E stream - Link state is: DISCONNECTED F stream - Link state is: DISCONNECTED G stream - Link state is: DISCONNECTED H stream - Link state is: DISCONNECTED I stream - Link state is: DISCONNECTED J stream - Link state is: DISCONNECTED K stream - Link state is: DISCONNECTED cmd: CONNECTED TO ONLY ONE STATION ============================= cmd: CS A stream - IO Link state is: CONNECTED to W6YEY B stream - Link state is: DISCONNECTED C stream - Link state is: DISCONNECTED D stream - Link state is: DISCONNECTED E stream - Link state is: DISCONNECTED F stream - Link state is: DISCONNECTED G stream - Link state is: DISCONNECTED H stream - Link state is: DISCONNECTED I stream - Link state is: DISCONNECTED J stream - Link state is: DISCONNECTED K stream - Link state is: DISCONNECTED cmd: If you are connected to several stations, the CSTATUS command shows your connect status as follows: CONNECTED TO SEVERAL STATIONS ============================ cmd: CS A stream - I Link state is: CONNECTED to W6YEY B stream - Link state is: CONNECTED to W6WNE C stream - Link state is: DISCONNECTED D stream - Link state is: CONNECT in progress E stream - Link state is: DISCONNECTED F stream - Link state is: CONNECTED to W6UOU via K7FT G stream - Link state is: DISCONNECTED H stream - O Link state is: DISCONNECTED I stream - Link state is: DISCONNECTED J stream - Link state is: DISCONNECTED K stream - Link state is: DISCONNECTED cmd: This sample display shows that : CHANNEL O has the input and output channels - you are using it. CHANNEL I is the last channel stream you heard a packet. All other channels' states are shown as they might appear with multiple connections. ------------------------------------------------------------ Command : CTEXT text Mnemonic : CT Default : Empty Parameter : text Any combination of characters and spaces up to a maximum of 239 characters. Refer to : CMSG, CMSGDISC, DTEXT, PASS ------------------------------------------------------------ CTEXT is the 'automatic answer' text you type into a special section of the TNC's memory. If CMSG is set to ON, the CTEXT message is sent as sooner another station connects to your station. To type multiple-line CTEXT messages and include a carriage return () character in your text, use the PASS character ( is the default value) immediately preceding the carriage return (refer to the PASS command). A typical CTEXT message might be: I am not available right now Please leave your message, then disconnect NOTE: If you enter a text string longer than 239 characters, the following error message appears and the command is ignored: ?too long cmd: Use a parent sign (%), or an ampersand (&) as the first character in the CTEXT message to clear the previous message without having to type a RESET command. The CTEXT message will not be sent if the CMSG command is set to OFF. Since the CTEXT is affect by the setting of CMSGDISC and DTEXT, refer to these command to set CTEXT properly. ------------------------------------------------------------ Command : CWID text Mnemonic : CWID Default : Empty Parameter : text Any combination text string up to 16 characters. Refer to : CIDCON, CTRL-F ------------------------------------------------------------ CWID is the "Mores Code ID" text. Maximum length of 16 characters can be stored in the memory for true Mores Code identification. NOTE: Use a "%" as the first character in the text to clear the CWID without issuing the RESET command. CWID is provided to meet the telecommunication regulation in Europe, but you may find useful application where you must notify your call sign or your identity to the other stations who are not in a packet radio community. ------------------------------------------------------------ Command : DISCONNE Mnemonic : D Default : Immediate Command Parameter : none Refer to : CONNECT, CONPERM ------------------------------------------------------------ DISCONNE is an immediate command that initiates a disconnect request to the other station to which you are connected. If you disconnect command is successful, your monitor will display: *** DISCONNECTED^@ Other commands can be entered while a disconnect is in progress. New connection are not allowed until the disconnect is completed. NOTES: 1) If the retry count is exceeded while you are waiting for the other station to acknowledge your disconnect command, your TNC automatically switches to the disconnected state. 2) If another disconnect command is entered while your TNC is trying to disconnect, the retry count is immediately set to the maximum number. In either case, your monitor displays: *** Retry count exceeded *** DISCONNECTED^@ Disconnect message are not displayed when your TNC is in Transparent Mode. NOTE: ^@ will not be displayed on the ordinary terminal. ------------------------------------------------------------ Command : DAYTIME date&time Mnemonic : DA Default : clock not set Parameter : date&time Current DATE and TIME to set. Refer to : CONSTAMP, DAYUSA, MSTAMP, MBOD ------------------------------------------------------------ DAYTIME sets the TNC's internal clock current date and time. The date&time parameter is used in the Packet Mode by the commands CONSTAMP and MSTAMP to 'time stamp' received and monitored messages. Entries in the "heard" (displayed ny MHEARD are also time stamped if data&time has been set. The TNC time updates continuously by back-up battery. The clock is not set when the TNC is first turned on, or when the TNC is rusted by removing internal jumper plug (JPC2), the DAYTIME command will display: cmd: DAYTIME 01/01/90 00:mm:ss where "mm" and "ss" shows the time since first power up to the internal clock. If you type DAYTIME without a parameter, the TNC displays date and time information since 01/01/90 00:00:00. The format for entering the date&time is: YYMMDDhhmmss where: YY is the last two digit of the year. (00-99). MM is the two digit month code (01-12). DD is date (01-31). hh is the hour (00-23). mm is the minutes after the hour (00-59) ss is the second after the minute (00-59) Entering the number 0-9 with leading zeros; all codes must be exactly two digits. The TNC will not echo the new string, thus you must issue DAYTIME command to confirm an entry. Example: cmd: DAYTIME 9210030935 cmd: DAYTIME 92/10/03 09:35:10 ------------------------------------------------------------ Command : DAYSTAMP ON/OFF Mnemonic : DAYS Default : OFF Parameter : ON The DATE is included in CONSTAMP and MSTAMP. OFF Only the TIME is included in CONSTAMP and MSTAMP. Refer to : TIME, DAYUSA, DAYTIME ------------------------------------------------------------ DAYSTAMP activates the date in CONSTAMP and MSTAMP. Set DAYTSAMP to ON when you want a dated record or packet channel activity. ------------------------------------------------------------ Command : DAYUSA ON/OFF Mnemonic : DAYU Default : ON Parameter : ON Date is displayed in a mm/dd/yy format. OFF Date is displayed in a dd-mm-yy format. Refer to : CONSTAMP, DAYTIME, MSTAMP ------------------------------------------------------------ The DAYUSA command allows you to determines the format of the TNC's date display. If DAYUSA is set to ON, the standard United Sates format is used. If DAYUSA is set to OFF, the standard European format is used. The command affects the format of the date display that is used in "time stamps. It also affects the display when you enter a DAYTIME command without parameters. If DAYUSA is set to ON, October 3, 1992 and 09:35:10 AM would be displayed as: cmd:DAYUSA ON DAYUSA was ON cmd:DAYTIME 10/03/92 09:35:10 If DAYUSA is set to OFF, the same date and time would be displayed as: cmd:DAYUSA OFF DAYUSA was ON cmd:DAYTIME 03-Oct-92 09:35:10 ------------------------------------------------------------ Command : DELETE ON/OFF Mnemonic : DEL Default : ON Parameter : ON The ($7F) key is used for editing your typing. OFF The ($08) key is used for editing your typing. Refer to : BKONDEL, CANLINE ------------------------------------------------------------ Use the DELETE command to select the key to use for deleting while editing. Type the selected DEL key to delete the last character from the input line. You cannot use the DEL key to delete text before the beginning of a line. Use the PASS character to delete characters that have been typed into the text. The BKONDEL command controls how the TNC indicates deletion. To see a corrected display of the current line after deleting characters, type the redisplay-line character, which is set by the REDISPLA command. ------------------------------------------------------------ Command : DIGIPEAT ON/OFF Mnemonic : DIG Default : ON Parameter : ON The TNC will digipeat packets, if another station requests it. OFF The TNC will not digipeat packets. Refer to : none ------------------------------------------------------------ When this parameter is set to ON, any packet that is received with your TNC's call sign (including SSID) in the digipeater list of its address field will be re-transmitted. Each station that is included in the digipeater list relays the packet, in turn, and will make the packet so that it will not accidentally relay it twice (unless it is requested to do so.) In addition, all stations will relay the packet in the correct order. Digipeating takes place concurrently with other TNC operations and does not interfere with normal operation of a packet station. Many stations set DIGIPEAT to ON most of the time. You may wish to set it to OFF if you are not at home, or if your transmitter/receiver relay makes enough noise to wake you up at night. The HID command enables automatic re-transmission of identification packets when your station acts as a digipeater. ------------------------------------------------------------ Command : DISCONE ON/OFF Mnemonic : DISCONE Default : ON Parameter : ON Add CTRL-@ ($00) after *** DISCONNECTED message. OFF CTRL-@ ($00) is not added after *** DISCONNECTED message. Refer to : none ------------------------------------------------------------ Some commercially available packet software determines the disconnect state by the character code $00 (CTRL-@). Use DISCONE command to meet your terminal software requirement. Some display terminal will not display $00 (CTRL-@). ------------------------------------------------------------ Command : DISPLAY (class) Mnemonic : DISP Default : Immediate Command Parameter : class Optional parameter identifier, one of the following. (A)synchronous RS232C port parameters. (B)oard display message board parameters. (C)haracter display special characters. (H)ealth display health parameters. (I)d display ID parameters. (L)ink display Link parameters. (M)onitor display monitor parameters. (T)iming display timing parameters. ------------------------------------------------------------ If you type DISPLAY without a class parameter, all control parameters and their current values are displayed. You can specify the optional parameter class to display subgroups of related parameters. To display an individual parameter, enter the parameter name without an option. Example : cmd: DISPLAY ASYNC (or A) All asynchronous port (RS-232C) parameters are displayed. ------------------------------------------------------------ Command : DTEXT text Mnemonic : DT Default : Empty Parameter : text Any combination of characters and spaces up to a maximum of 239 characters. Refer to : CMSG, CMSGDISC, CTEXT, PASS ------------------------------------------------------------ DTEXT is the 'automatic answer' text you type into a special section of the TNC's memory. If CMSG is set to ON, the DTEXT message is sent as soon as another station disconnects to your station. To type multiple-line DTEXT messages and include a carriage return () character in your text, use the PASS character ( is the default value) immediately preceding the carriage return (refer to the PASS command). A typical DTEXT message might be: I am not available right now Please leave your message, then disconnect NOTE: If you enter a text string longer than 239 characters, the following error message appears and the command is ignored: ?too long cmd: Use a parent sign (%), or an ampersand (&) as the first character in the DTEXT message to clear the previous message without having to type a RESET command. The DTEXT message will not be sent if the CMSG or CMSGDISC command is set to OFF. ------------------------------------------------------------ Command : DWAIT n Mnemonic : DW Default : 16 Parameter : n 0 - 250 specifies default wait time in 10 mS intervals. Refer to : TXDELAY, AXDELAY, AXHANG ------------------------------------------------------------ DWAIT helps to avoid collisions with digipeated packets. Unless the TNC is waiting to transmit digipeated packets, DWAIT forces the TNC to pause after last hearing data on the channel, for the duration of the DWAIT (Default Wait) time, before it begins its transmitter key-up sequence. Wherever possible, the value of DWAIT should be agreed on by all stations in a local area when digipeaters are used in the area. The best value will be determined by experimenting. DWAIT is a function of the key-up time (TXDELAY) of the digipeater stations and helps alleviate the drastic reduction of throughput that occurs on a channel when digipeated packets suffer collisions. DWAIT is necessary because digipeated packets are not retired by the digipeater, but are always restarted by the originating station. When all stations specify a default wait time, and right value of "n" is chosen, the digipeater captures the frequency every time it has data to send. - digipeated packets are sent without this delay. NOTE: The TNC-210 set DWAIT value to "0" automatically regardless the value set by DWAIT. TYPE OF OPERATION TIME (mS) DWAIT VALUE ================= ========= =========== Digipeaters 00 Local Keyboard 160 16 (default) PBBS 320 32 File Transfer 480 48 ------------------------------------------------------------ Command : ECHO ON/OFF Mnemonic : E Default : ON Parameter : ON Characters received from the computer or terminal are echoed by the TNC. OFF Characters are not echoed. Refer to : none ------------------------------------------------------------ The ECHO command controls local echoing by the TNC when it is in the Command or Converse Mode. Local echoing is disable in the Transparent Mode. Set ECHO ON if you do not see your typing appear on your display. SET ECHO OFF if you see each character you typed doubled. ECHO is set correctly when you see the characters you type display correctly. ------------------------------------------------------------ Command : ESCAPE ON/OFF Mnemonic : ES Default : OFF Parameter : ON The character ($1B) is output as "$"($24). OFF The character is output as ($1B). Refer to : AFILTER, MFILTER ------------------------------------------------------------ The ESCAPE command selects the character to be output when an character is to be sent to the terminal. The translation is disabled in Transparent Mode. The ESCAPE character selection is provided because some computers and terminal emulators interpret the character as a special command prefix. Such terminals may alter their displays depending upon the characters following the . Set ESCAPE ON if you have such a terminal to avoid unexpected text strings from other packeteers. Refer to the AFILTER and MFILTER commands for information about character stripping (rather than character translation) in monitored packets. ------------------------------------------------------------ Command : FLOW ON/OFF Mnemonic : F Default : ON Parameter : ON Type-in flow control is active. OFF Type-in flow control is not active. Refer to : XFLOW, RSFLOW, FLOVER ------------------------------------------------------------ When FLOW is ON, type-in flow control is active. Any character typed on your keyboard causes output from the TNC to the terminal to stop until any of the following conditions exist. A packet is forced (in the Converse Mode). A line is completed (in the Converse Mode). The packet length (See PACLEN) is exceeded. The terminal output buffer fills up. Canceling the current command or packet or typing the redisplay-line character also causes output to resume. Type-in flow control is not used in the Transparent Mode. Setting FLOW ON prevents inbound or received data from interfering with your keyboard data entry. If you (and the person you are talking to) normally wait for a packet from the other end before starting to respond, you can set FLOW OFF. Some packet bulletin board programs (PBBS) may work best with FLOW set to OFF. Some computers with "software UARTs" may be unable to send and receive data at the same time. If you are using that type of computer, set FLOW to ON. ------------------------------------------------------------ Command : FILE Mnemonic : FI Default : Immediate Command Refer to : "Using the Bulletin Board Feature" in the Operating Instruction Manual. ------------------------------------------------------------ FILE command displays a BBS files. ------------------------------------------------------------ Command : FLOVER n Mnemonic : FL Default : 0 Parameter : n 0 to 120 specifies the time in one minute intervals. Refer to : RSFLOW, XFLOW, FLOW, START, STOP ------------------------------------------------------------ FLOVER specifies the start period for data discarding after the TNC's receiving buffer is full. If FLOVER is specified, it ignore the hard flow control (DTR and RTS) and start discarding the receiving data. FLOVER command is useful when operating with a BBS while computer terminal is OFF. Because, once the receiving buffer is full while computer is OFF, the BBS will hang-up and no further command instructions cannot be received. Use FLOVER to erase the new incoming data automatically. When the receiving buffer become full, the TNC respond to the other station with RNR frame, and TNC starts discarding the receiving data after the period set by the FLOVER. NOTE: Do not set FLOVER smaller than 6. If you set the value less than 6, the TNC's flow control to the terminal may not be worked properly. ------------------------------------------------------------ Command : FRACK n Mnemonic : FR Default : 3 Parameter : n1 to 15, specifying frame acknowledgment time-out in one-second intervals. Refer to : none ------------------------------------------------------------ FRACK is the FRame ACKnowledgement time in seconds that your TNC will wait for acknowledgement of the last-sent protocol frame before resending or "retiring" that frame. After sending a packet requiring acknowledgement, the TNC waits for FRACK seconds time-out before incrementing the retry counter and sending the frame again. If the packet address includes digipeater instructions, the time between retries is adjusted to: Retry interval = "n" x (2n x m +1) where m is the number of intermediate relay stations. When a packet is retries, a random wait time is added to any other wait times in use. This avoid lockups in which two packet stations repeatedly send packets which collide with each other. Recommended value for the FRACK is as follows: TYPE OF OPERATION FRACK VALUE ================= =========== Local Keyboard 3 (default) Local Keyboard 6 (when the channel is congested) PBBS 6 File Transfer 10 ------------------------------------------------------------ Command : FULLDUP ON/OFF Mnemonic : FU Default : OFF Parameter : ON Full duplex mode is ENABLED. OFF Full duplex mode is DISABLED. Refer to : none ------------------------------------------------------------ When full-duplex mode is disabled, the TNC makes use of the DCD (Data Carrier Detect) signal from its modem to avoid collisions; the TNC acknowledges multiple packets in a single transmission with a single acknowledgement. When full-duplex mode is enabled, the TNC ignores the DCD signal and acknowledges packets individually. Full-duplex operation is useful for full-duplex radio operation, such as through AO-13 or JAS-1B. It should not be used unless both your station and the other station can operate in full-duplex. You may also find full-duplex mode useful for some testing operations, such as analog or digital loopback tests. ------------------------------------------------------------ Command : HBAUD n Mnemonic : HB Default : 1200 Parameter : n Values specifying the rate or signaling speed in bauds from the TNC to the radio. Refer to : none ------------------------------------------------------------ HBAUD sets the radio (on-air) baud rate only in the packet operating mode. HBAUD has no relationship to your computer terminal program,s baud rate. You must use the same radio data rate as the other station. NOTE: Always set HBAUD to 1200. The TNC will accept other numbers, but the TNC's modem port is not acceptable of using anything other than 1200 baud. Example:HBAUD 1200 NOTE: Modern commercial and amateur terminology no longer always refer to the speeds or data rate in "WPM". The term "bauds" is accepted for FSK and AFSK operations using mono- bit data. In these case, the terms "bauds" and "bit-per- second" mean the same thing. Either term may be used. ------------------------------------------------------------ Command : HEADERLN ON/OFF Mnemonic : HE Default : OFF Parameter : ON The header for a monitored packet is printed on a separate line from the packet text. OFF The header add the text of monitored packets are printed on the same line. Refer to : MRPT, MSTAMP ------------------------------------------------------------ HEADERLN affects the display of monitored packets. When HEADERLN is OFF, the address information is shown on the same line as the packet text: W6YEY>W6UOU: Go ahead and transfer the file. When HEADERLN is ON, the address is shown, followed by a that puts the packet text on a separate line: W6YEY>W6UOU: Go ahead and transfer the file If MRPT or MSTAMP are ON, set HEADERLN ON; long headers may extend across your screen or page when these functions are active. ------------------------------------------------------------ Command : HEALLED ON/OFF Mnemonic : HEAL Default : OFF Parameter : ON Automatically runs diagnostic tests on the microprocessor when you turn the unit on. If all checks are satisfactory, it alternately lights the CON and STA LEDs. OFF Does not run diagnostic test and no LEDs will light. Refer to : MAIL, SOFTDCD ------------------------------------------------------------ Allows you to make a quick check of the TNC's operation. If you set HEALLED to ON and the LEDs do not alternately flash, check for proper power supply or battery voltage and connections. If the LEDs do not flash, the TNC's internal software has failed. NOTE:HEALLED command allows the user to redefine the functions of the two CPU controllable LEDs (i.e. the STAtus and CONnect LEDs). When HEALLED is set to ON, the two LEDs flash in a seeming random fashion. At a glance, the user may make a judgment on whether the software has crashed, since the LEDs will probably not flash if the software falls catastrophically. With HEALLED set to OFF, the LEDs function as before. ------------------------------------------------------------ Command : HID ON/OFF Mnemonic : HI Default : OFF Parameter : ON Your TNC sends HDLC identification as digipeater. OFF Your TNC does not send HDLC identification. Refer to : UNPROTO, MYCALL, ID, MYALIAS ------------------------------------------------------------ The HID command activates or disables your TNC's automatic periodic transmission of identification packets when it is operating as digipeater. This identification consists of an un-sequenced I-frame with your station identification (MYCALL) and MYALIAS in the data field. Set HID ON to force your TNC to send an ID packet every 9.5 minutes when it is being used as digipeater. The HID identification packet is addressed to the "CQ" address set by the UNPROTO command. Your station identification is the call sign you have set with the MYCALL command, with "digipeater" appended. W6YEY >ID: W6WNE/R NOTE: You cannot change the 9.5-minute automatic interval timing. ------------------------------------------------------------ Command : ID Mnemonic : I Default : Immediate Command Parameter : none Refer to : UNPROTO, MYCALL, HID ------------------------------------------------------------ ID is an immediate command that sends a special identification packet. The ID command allows you to send a final identification packet when you take your station off the air. Note that HID must set on. ID forces a final identification packet to be sent when a digipeater station is being taken off the air. The identification consists of an unnumbered I-Frame, with its data filed containing MYALIAS (if any) and your MYCALL station identification and characters "/R". The ID identification packet is sent only if the digipeater has transmitted since the last automatic identification. ------------------------------------------------------------ Command : K Mnemonic : K Default : Immediate Command Parameter : none Refer to : Same as CONVERSE. Refer to CONVERSE ------------------------------------------------------------ ------------------------------------------------------------ Command : KILL Mnemonic : KI Default : Immediate Command Refer to : "Using the Bulletin Board Feature" in the Operating Instruction Manual. ------------------------------------------------------------ KILL command erase the file or message in a BBS. ------------------------------------------------------------ Command : KISS ON/OFF Mnemonic : KISS Default : OFF Parameter : ON Your TNC operates as a KISS mode to comply with TCP/IP protocol. OFF Your TNC operates as a normal AX.25 Level 2 terminal node controller. Refer to : RESTART ------------------------------------------------------------ KISS command is provided if you wish to operate your TNC with the KA9Q Internet Program (TCP/IP). If you enter this command, you must issue RESTART command or power on/off reset to enable your TNC. The STA and CON LEDs blinks three times indicating that your TNC is in KISS mode. NOTE: If you do not terminate KISS operation through the KISS software program, and if you turn your TNC OFF, next time you turn your TNC ON will initialize all memory contents and return to a factory default value. Refer to the operation instructions according to the instruction comes with KA9Q NET - Executable and source code for the NET version of TCP/IP by Phil Karn, KA9Q, with enhancements by Joe Buswell, K5JB or Introduction to TCP/IP. These software is available from Tucson Amateur Packet Radio Corporation, or you can be downloaded from HAM-NET through CompuServe etc. ------------------------------------------------------------ Command : LCOK ON/OFF Mnemonic : L Default : ON Parameter : ON Cause the TNC to send lower case characters to the computer or terminal. OFF Cause the TNC to translate lower case characters to upper case. Refer to : none ------------------------------------------------------------ If LCOK is OFF, lower case characters are translated to upper case before they are sent to the terminal. Input characters and echo are not translated. NOTE: Case translation is disabled in Transparent Mode. If your computer or terminal does not accept lower case characters, it may react strangely when the TNC sends them to it. The LCOK command allows you to translate all lower case characters that are received in packets, as well as messages from the TNC, to upper case. Since echoes of the characters you type are not translated to uppercase, you can use this command to make your display easier to read when you converse in a connected mode. If you and the other station set LCOK to OFF, you can each type your own message in lower-case, and the other station's incoming packets will be in upper case. This makes it easier to distinguish between incoming and outgoing packets. ------------------------------------------------------------ Command : LCALLS call1, call2 .. call8 Mnemonic : LCA Default : Empty Parameter : call Call sign list. Up to 8 calls, separated by commas. Refer to : BUDLIST ------------------------------------------------------------ LCALLS uses arguments to determine how your TNC monitors the packet channels and displays information - which station's packet will be displayed. Each call sign may include an optional SSID. LCALLS works with BUDLIST and it allows selective monitoring of other packet stations. LCALLS and BUDLIST determine which packets will be displayed when you have set MONITOR ON. BUDLIST specifies whether the call signs in the list are the stations that you want to ignore or, alternatively, they are the only stations that you want to monitor. If you want to monitor only for packets from a limited list, you may enter your selected stations in the LCALLS, and set BUDLIST to ON. If you want to ignore packets from a limited list, you may list the call signs to ignore in the LCALLS and set BUDLIST to OFF. ------------------------------------------------------------ COMMAND : LCSTREAM ON/OFF Mnemonic : LCS Default : ON Parameter : ON Cause the character that immediately follows the STREAMSWITCH character to be changed uppercase, before it is acted upon. OFF Causes the character that immediately follows the STREAMSWITCH character to be acted upon normally. Refer to : STREAMSW ------------------------------------------------------------ When LCSTREAM is set to ON the character that immediately follows the STREAMSWITCH character is changed to upper case before it is acted upon as a parameter to that command. Since you can specify the stream you desire with either an uppercase or a lower-case letter, the LCSTREAM command simplifies management of multiple connections. When LCSTREAM is set to OFF, the case of the character that immediately follows the STREAMSWITCH character is important. NOTE: A lower-case letter will result in an error message. ------------------------------------------------------------ Command : LFADD ON/OFF Mnemonic : LF Default : OFF Parameter : ON A character is added to outgoing packets following each transmitted in the packet. OFF No is added to outgoing packets. Refer to : AUTOLF ------------------------------------------------------------ LFADD is similar to AUTOLF, except the line feed characters are added to outgoing packets instead of the displayed text. This feature helps make your TNC compatible with other packet radio TNCs. Set LFADD to ON if the station you are communicating with reports that your packets are being overprinted. NOTE: This character is disabled in the Transparent Mode. ------------------------------------------------------------ Command : LFIGNORE ON/OFF Mnemonic : LFI Default : OFF Parameter : ON Causes the TNC to ignore characters it receives from another station. OFF Causes the TNC to print any characters it receives. Refer to : none ------------------------------------------------------------ Set LFIGNORE to ON if you feel you are receiving too many line feeds from another station. NOTE: This command has no effect in the Transparent Mode. ------------------------------------------------------------ Command : LIST Mnemonic : L Default : Immediate Command Parameter : None Refer to : "Using the Bulletin Board Feature" in the Operating Instruction Manual. ------------------------------------------------------------ LIST command display the files or message in a BBS. ------------------------------------------------------------ Command : LOG Mnemonic : LOG Default : Immediate Command Parameter : None Refer to : "Using the Bulletin Board Feature" in the Operating Instruction Manual. ------------------------------------------------------------ LOG command display the list of stations that are connected to a BBS. ------------------------------------------------------------ Command : MONITOR ON/OFF Mnemonic : M Default : ON Parameter : ON Packet activity is monitored. OFF Packet activity is not monitored. Refer to : BUDLIST, LCALLS, MALL, MCON, MRPT, MSTAMP, MHEADERLN, MTR, RSFLOW ------------------------------------------------------------ If MONITOR is set to ON and the TNC is not in the Transparent Mode, packets not addressed to you are displayed. The addresses in the packet are displayed along with the data portion of the packet. For example" W6YEY > W6UOU-7: I am ready to transfer the file. The call sign are separated by a ">" and the substation ID field (SSID) is displayed if it is other than 0. The MALL, BUDLIST, and LCALLS commands determine which packets are to be monitored. The MCON command controls the action of the monitor mode when the TNC is in a connected state. All monitor functions are disabled in the Transparent Mode. HEADERLEN controls the format of the monitor display. If you wish to see the station address on a separated line from the text, set HEADERLN ON. MRPT enables monitoring of the digipeater routing as well as source and destination address for each packet. MSTAMP includes a time stamp with the address if you have set DAYTIME. ------------------------------------------------------------ Command : MALL ON/OFF Mnemonic : MA Default : ON Parameter : ON Both connected and non-connected packets are monitored. OFF Only non-connected packets are monitored. Refer to : MONITOR, BUDLIST, LCALLS, MTCALL, MRCALL, MTR ------------------------------------------------------------ The MALL command determines the class of monitored packets. When MALL is set to OFF, only packets from unconnected stations determined by BUDLIST, LCALLS, MTCALL, MRCALL and MTR are displayed. This is the normal setting when you are communicating to group of unconnected stations. When MALL is set to ON, all eligible frames are displayed, including those that are sent between two other connected stations. The MALL command is handy for diagnostic purpose or for general monitoring. ------------------------------------------------------------ Command : MAIL ON/OFF Mnemonic : MAI Default : OFF Parameter : ON Enables incoming mail indicator. OFF Disables incoming mail indicator. Refer to : MBOD, MYMCALL ------------------------------------------------------------ When MAIL is set to ON, STA and LED light up to tell you that you have a message in the bulletin board. This feature allows you to know the incoming mail while computer is OFF. The indicator works with the following conditions: 1) When TNC is powered up and if there is a message left for you. 2) When the other station disconnect the link after he left the message, 3) If there is a message for you and you turn MAIL command to ON. The MAIL indicator extinguish when you change the MAIL command to OFF, or your mail is erased. ------------------------------------------------------------ Command : MAXFRAME n Mnemonic : MAX Default : 4 Parameter : n 1 to 7 signifying a number of packet frames. Refer to : PACLEN, FULLDUP ------------------------------------------------------------ MAXFRAME sets an upper limit on unacknowledged packets your TNC permits on the radio link at any one time. MAXFRAME also sets the maximum number of contiguous packets your TNC will send during any given transmission. If some but not all of the outstanding packets are acknowledged, a smaller number may be transmitted the next time, or new frames may be included in the re-transmission so that the total number of unacknowledged packet frame does not exceed "n". The best value of MAXFRAME depends upon your local channel conditions. In most case of keyboard-to-keyboard direct or local operation (link that do not require going through digipeaters), you can use the default value MAXFRAME 4. When the amount of packet traffic, the path in use, the digipeaters involved, or other variables not under your control make packet operation difficult (as shown by lots of retries!), you can actually improve your throughput by reducing MAXFRAME. If packet traffic is heavy or the path is poor, reduce MAXFRAME to 3 or 2. If you are sharing the channel with several PBBSs and digipeaters, or when you are working a PBBSs or other type of host communications, reduce MAXFRAME to 1. If the radio link is good, an optimal relationship exists between the parameters set by these commands, so that the maximum number of characters outstanding does not exceed the receive buffer space of the TNC receiving data. ------------------------------------------------------------ Command : MBOD ON/OFF Mnemonic : MB Default : OFF Parameter : ON Turn the message (bulletin) board on. OFF Turn the message (bulletin) board off. Refer to : MYMCALL, DAYTIME ------------------------------------------------------------ This TNC has built-in bulletin board capability. To use this feature, you must set MBOD to ON. Before you do this, however, make sure that you have entered an exclusive call sign in MYMCALL. NOTE: To use the bulletin board feature, you must enter a call sign into MYMCALL. ------------------------------------------------------------ Command : MCON ON/OFF Mnemonic : MC Default : OFF Parameter : ON Monitors packets from all other stations while your TNC is connected to another station. OFF Only monitors packets from the station you are connected to. Refer to : MALL, MONITOR ------------------------------------------------------------ Turn MCON ON to monitor other stations on the frequency while your TNC is connected to another station. ------------------------------------------------------------ Command : MCOM ON/OFF Mnemonic : MCOM Default : OFF Parameter : ON Connected, disconnected, information, UA (Unnumbered Acknowledgement), and DM (busy signal) frames are monitored. OFF Only information frames are monitored. Refer to : MALL, MONITOR ------------------------------------------------------------ When MCON is set to ON, both connected and disconnected frames are displayed, if MONITOR is also set to ON. Connected, disconnected, information, UA and DM frames are indicated by , , , , and , respectively. Like other monitor commands, stations that are monitored are determined by BUDLIST and LCALLS. Set MCOM to OFF to display only I frames (packets that contain user information). ------------------------------------------------------------ Command : MFILETER n1[, n2[,n3[,n4]]] Mnemonic : MFI Default : $00 Parameter : 0 to $7F0 (0 to 127 decimal) specifies an ASCII code. Up to four characters may be specified. Refer to : AFILTER ------------------------------------------------------------ Use MFILTER to select characters to be "filtered", or excluded from monitored packets. Parameters "n1," "n2", etc., are the ASCII codes for the characters you want to filter. You can enter up to four characters in either hex or decimal. 1) To prevent a character from clearing your screen, set MFILTER 12. 2) To eliminate character, which some computer interpret as end-of-file markers, set MFILTER 26. 3) To eliminate characters, which beep your computer or terminal, set MFILTER 7. ------------------------------------------------------------ Command : MHEARD Mnemonic : MH Default : Immediate Command Parameter : none Refer to : MSTAMP, MHCLEAR ------------------------------------------------------------ MHEARD is an immediate command that displays a list of stations heard since the last time the MHEARD buffer was cleared. Use the MHC command to clear the MHEARD buffer. The maximum number of heard stations that can be logged is 18. If more stations are heard, earlier entries are discarded. NOTES: 1) Stations that are heard directly are not marked with a * in the heard log. 2) Stations that have been repeated by a digipeater are marked. 3) If you clear the list of stations heard at the beginning of a session, you can use this command to keep track of the stations that are active during that period. 4) Logging of stations heard is disabled when PASSALL is ON. When DAYTIME has been used to set the date and time, entries in the heard log are time stamped. When DAYSTAMP is ON, the date is shown before the time. An actual sample of MHEARD functions with clock set is shown below: DAYSTAMP ON DAYSTAMP OFF =========== ============ cmd: mh cmd: mh 05-Oct-92 21:00:01 W6YEY 21:00:01 W6YEY 05-Oct-92 21:00:05 W6WNE 21:00:05 W6WNE 05-Oct-92 21:00:10 W6UOU 21:00:10 W6UOU 05-Oct-92 21:00:15 K7FT 21:00:15 K7FT cmd: cmd: ------------------------------------------------------------ Command : MHCLEAR Mnemonic : MHC Default : Immediate Command parameter : none Refer to : MHEARD ------------------------------------------------------------ The MHCLEAR command clears the list of stations heard. You can use this command together with the MHEARD to keep track of any stations heard over a particular period of time, such as evening or a week. Be sure to clear the list of stations heard when you first begin to monitor packet activity. ------------------------------------------------------------ Command : MINE Mnemonic : MI Default : Immediate Command Parameter : none Refer to : "Using the Bulletin Board Feature" in the Operating Instruction Manual. ------------------------------------------------------------ MINE command display the files or message addressed to you in a BBS. ------------------------------------------------------------ Command : MMUI ON/OFF Mnemonic : MMUI Default : OFF Parameter : ON UI-Frame (unprotocol packet) from the stations set by the MTCALL are monitored. OFF UI-Frame (unprotocol packet) from the stations set by the MTCALL are not monitored. Refer to : MTCALL, MTR, MONITOR, MCON ------------------------------------------------------------ MTCALL is for monitoring the station that are currently connecting, and it cannot recognized unprotocol (UNPROTO) frame. When the MMUI is set to ON, you can monitor unprotocol frame (UI frame) from stations in the MTCALL. If the station listed in the MTCALL has disconnected the link from you then the station start initiating an unprotocol CQ, you can still monitor the station's activity as long as this command is ON. ------------------------------------------------------------ Command : MNET ON/OFF Mnemonic : MN Default : OFF Parameter : ON NET/ROM Back Bone packet activity is monitored. OFF NET/ROM Back Bone packet activity is not monitored. Refer to : MONITOR, MTCALL, MTR ------------------------------------------------------------ MNET is a special monitor command to monitor the activity on NET/ROM back bone network. If MNET is set to ON, your TNC ignores all packet activity except the packet signal from the NET/ROM. Only NET/ROM activity can be monitored. NET/ROM's control cord ($0 - $1F) will be converted to text character to avoid malfunction during NET/ROM monitoring. NET/ROM is a registered trademark of Software 2000, Inc. ------------------------------------------------------------ Command : MRPT ON/OFF Mnemonic : MR Default : ON Parameter : ON Show digipeaters in the header; stations heard directly are marked with asterisk. OFF Show packets only from originating and destination stations. Refer to : HEADERLN ------------------------------------------------------------ MRPT affects the way monitored packets are displayed. When MRPT is OFF, only packets from the originating station and the destination station are displayed: W6YEY*> W6UOU-7: In addition, while MRPT is OFF, the TNC will remove all indications of digipeater paths in connect requests, and all connect and disconnect stamps. When MRPT is ON, the call signs of all stations in the entire digipeat path are displayed. The call sign of the stations received directly are flagged with an asterisk (*): W6YEY*>W6UOU-7>W6WNE>K7FT : ------------------------------------------------------------ Command : MRCALL call (-n) Mnemonic : MRC Default : Empty Parameter : call Call sign of the stations which you wish to monitor with MRCALL feature. n 0 to 15 indicating an optional substation ID (SSID). Refer to : MTR, MTCALL, MMUI, MONITOR ------------------------------------------------------------ MRCALL is an associated command for MTCALL. TO enable this command you must set MTCALL. If you set only MRCALL command, special monitor function does not work. Example: Monitoring with MTR is OFF: W6YEY > W6UOU-2 : This examples shows that W6YEY and W6UOU-2 are connected state, and W6YEY sent a packet to W6UOU-2. If you include W6UOU-2 in MRCALL and W6YEY is in MTCALL, then you can monitor two stations. In this setting, you can monitor only information portion of their activity. This feature is useful if one of the station is using NET/ROM and you want to monitor both stations. NOTE: Use a "%" or "&" to clear the MRCALL. ------------------------------------------------------------ Command : MSTAMP ON/OFF Mnemonic : MS Default : OFF Parameter : ON Monitored frames ARE time stamped OFF Monitored frames ARE NOT time stamped. Refer to : HEADERLN, DAYTIME, DAYUSA, CONSTAMP ------------------------------------------------------------ The MSATMP command activate or disables time stamping of monitored packets. When your TNC's internal clock is set, date and time information is available for automatic logging of packet activity or other applications. When MSTAMP is OFF, the packet header display looks like this: W6YEY-7>W6UOU-7>W6WNE When MSATMP is ON and DAYSTAMP is OFF, the display looks like this: 18:50:13 W6YEY-7>W6UOU-7>W6WNE When both MSATMP and DAYSTAMP are set ON, the display looks like this: 10-Oct-92 22:10:45 W6YEY-7>W6UOY-7>W6WNE Set the date and time with the DAYTIME command. Setting MSTAMP ON increase the length of the address display. Set HEADERLN ON to display this information on a separate line. ------------------------------------------------------------ Command : MTEXT text Mnemonic : MT Default : Standard message Parameter : text Any combination of characters and spaces up to a maximum 239 characters. Refer to : MBOD, PASS ------------------------------------------------------------ MTEXT is the message board connect text. When the MTEXT is not set, the standard PBBS connect message is: Welcome to W6YEY's message board. To type multiple line MTEXT messages and include a carriage return character in your text, use PASS character. ------------------------------------------------------------ Command : MTCALL call (-n) Mnemonic : MTC Default : Empty Parameter : call Call sign of the stations which you wish to monitor with MTCALL feature. n 0 to 15 indicating an optional substation ID (SSID). Refer to : MTR, MRCALL, MMUI, MONITOR ------------------------------------------------------------ MTCALL is a special monitor command. It specifies the call signs for "monitor transmit stations call". If you set originating station's call signs in the MTCALL, then you can monitor their transmitting packet's frame number of the header. Thus, if you set other RBBSs call sign in the MTCALL, you can use and process the monitored data easily. Example: If W6YEY is in MTCALL. W6YEY > W6UOU-2 : You can monitor the data from W6YEY. To enable this feature, you must set MTR to ON. To disable the MTCALL, set MTR to OFF. If you enter the call sign at the first time, MTR is automatically set to ON. If you delete the call sign, MTR will be OFF at the same time. Example: cmd: MTC W6WNE, W6UOU-2 This setting enable to monitor both W6WNE and W6UOU. NOTE: MTCALL monitors all packets originating from the station set by MTCALL. If you wish to monitor only two stations (say W6WNE and W6UOU-2), you must list both stations in the MTCALL and MRCALL. cmd: MTC W6WNE, W6UOU-2 cmd: MRC W6WNE, W6UOU-2 NOTE: Use a "%" or "&" character to clear the MTCALL. ------------------------------------------------------------ Command : MYCALL call (-n) Mnemonic : MY Default : NOCALL Parameters: call your call sign n 0 to 15, indicating an optional substation ID (SSID) Refer to : MYALIAS, ID, HID, MYMCALL, CONNECT, XMITOK ------------------------------------------------------------ Use the MYCALL command to load your call sing into your TNC's RAM. Your call sign is inserted automatically in the FROM address field for all packets originated by your TNC. MYCALL is also used for identification packets (see HID and ID). Your TNC accepts connect request frames with your MYCALL in the TO field and repeats frames with this call sign in the digipeated field. NOTE: The factory default is set to "NOCALL" and you cannot send any data until you set to your own unique ID. Two or more stations cannot use the same call sign (including SSID) on the air at the same time. Use SSID to distinguish between two stations with the same call sign. The SSID will be zero(0) unless explicitly set to another value. Although there is no standardization of SSIDs at present, most packet operators use SSID 0 (zero) for manual or local keyboard operation of their main station, and an SSID of (- 1) or (-2) for a secondary station or dedicated digipeater under their responsibility. Local area networks operated or maintained by a packet group or club may use the same call sign for several stations in their network, each node or unit being identified with a deferent SSID. ------------------------------------------------------------ Command : MYALIAS call (-n) Mnemonic : MYA Default : Empty Parameter : call Alternate identity of your TNC. n 0 to 15, an optional substation ID (SSID). Refer to : MYCALL, ID, HID, DIGIPEAT, MYMCALL ------------------------------------------------------------ MYALIAS specifies an alternate call sign (in addition to the call sign specified in MYCALL) for use as a digipeater only. NOTE: The TNC will not allow other stations to connect to your MYALIAS call sign. MYALIAS permits both normal HID identification and an alias alternate, repeater-only "call sign." Wide-coverage digipeater operators in some areas change their call sign to a shorter and (usually) easier to remember identifier. Identifiers used include International Civil Aviation Organization (ICAO) airport IDs, sometimes combined with telephone area codes. ------------------------------------------------------------ Command : NEWMODE ON/OFF Mnemonic : NE Default : OFF Parameter : ON At connect time, the TNC automatically goes to the mode specified by CONMODE and return to the Command Mode at disconnect. OFF At connect time, the TNC automatically goes to the mode specified by CONMODE as soon as the link is established. The TNC does not return to the Command Mode at disconnect. Refer to : CONMODE, NOMODE, CONNECT ------------------------------------------------------------ NEWMODE determines how the TNc behaves when the link is broken. The TNC always switches to a mode specified by the CONMODE at the time of connection, unless NOMODE is ON. Set NEWMODE for the type of operation most suitable to your needs. If NEWMODE is OFF and the link is disconnected, the TNc remains in converse or transparent mode unless you have forced it to return. When NEWMODE is ON and the link is disconnected, or if the connect attempt fails, the TNC returns to the Command Mode. ------------------------------------------------------------ Command : NOMODE ON/OFF Mnemonic : NO Default : OFF Parameter : ON The TNC does not switch the mode specified by CONMODE and NEWMODE automatically. OFF The TNC switch the mode specified by CONMODE and NEWMODE automatically. Refer to : CONMODE, NEWMODE ------------------------------------------------------------ When NOMODE is ON, the TNC never switches from Converse or Transparent mode to command mode (or vice verse) by itself. Only specific commands (CONVERSE, K, TRANS, or ) typed by you can change the operating mode. When NOMODE is OFF, the TNC switches modes automatically according to the way NEWMODE and CONMODE is set. ------------------------------------------------------------ Command : NUCR ON/OFF Mnemonic : NU Default : OFF Parameter : ON characters ARE sent to the terminal following characters. OFF characters are not sent to the terminal characters. Refer to : NULF, NULLS ------------------------------------------------------------ Some of the older electromechanical terminal (Teletype machines) and printer terminals require some extra time for the printing head to do a line feed and return to the left margin. NUCR ON solves this problem by making the TNC send characters (ASCII code $00) to your computer or terminal. This introduces any necessary delay after any sent to the terminal. The NULLS command sets the number of individual characters that are to be sent when NUCR is ON. NOTE: Set NUCR ON if your terminal or printer misses one or more characters after responding to a . If this is the case, you will sometimes see overtyped lines. ------------------------------------------------------------ Command : NULF ON/OFF Mnemonic : NUL Default : OFF Parameter : ON characters are sent to the terminal following characters. OFF characters are not sent to the terminal following characters. Refer to : NUCR, NULLS ------------------------------------------------------------ Command : NULLS n Mnemonic : NULL Default : 0 Parameter : n 0 to 30 specifies the number of characters to be sent to your computer or terminal after or when NUCR or NULF are set ON Refer to : NUCR, NULF ------------------------------------------------------------ NULLS specifies the number of characters (ASCII code $00) to be sent to the terminal after or is sent. NUCR and/or NULF must be set to indicate whether nulls are to be sent after , , or both. Devices requiring null after are typically hard-copy devices requiring time for carriage movement. Devices that require null after are typically CRTs that scroll slowly. The null characters are sent from your TNC to your computer only in the Converse and Command Modes. ------------------------------------------------------------ Command : PACLEN n Mnemonic : PACL Default : 128 Parameter : n 0 to 255 specifies the maximum length of the data portion of a packet. 0 Zero is equivalent to 256 Refer to : MAXFRAME ------------------------------------------------------------ PACLEN sets the maximum number of user data bytes to be carried in each packet's information field. "User data" means the characters you actually type at your keyboard (or send form a stored file). Your TNC automatically transmits a packet when the number of characters you type (or send from disk) for a packet equals "n". This value is used in both the Converse and Transparent Modes. Most keyboard-to-keyboard operators use the default value of 128 bytes for routine VHF/UHF packet service. Experiment with deferent values for MAXFRAME and PACLEN to find the combination best suited to your operating conditions, especially if you are transferring files. The lower the value of PACLEN, the greater the possibility of getting packets though the link without "hits" or retries. Increase PACLEN to 256 bytes if transferring files to a nearby station over a high quality path. Reduce PACLEN to 64, or even 32 when working "difficult" or marginal radio path. If the radio link is good, an optimal relationship will exist between the parameters set by these commands. Set PACLEN so that the maximum number of characters outstanding does not exceed the receive buffer space of the TNC receiving data. NOTE: It is not necessary that two TNCs be set to the same PACLEN value to exchange data; some TNCs, however, may not be compatible when frames contain more than 128 data characters. ------------------------------------------------------------ Command : PACTIME EVERY/AFTER n Mnemonic : PACT Default : AFTER 10 Parameter : n 0 to 250 specifies 100 millisecond intervals. EVERY Packet time-out occurs every "n" times 100 mS. AFTER Packet time-out occurs when "n" times 100 mS. elapse without input from the computer or terminal. Refer to : CPACTIME, TRANS ------------------------------------------------------------ A PACTIME parameter is always used in the Transparent Mode. PACTIME is also set in the Converse Mode if CPACTIME is on. When EVERY is specified, the characters you type or send from disk are packetized and queued for transmission every "n" times 100 mS. When AFTER is specified, the characters you type or send from disk are packetized when input from the terminal stops for "n" times 100 mS. A zero-length packet will never be produced. The timer is not started until the first character or byte is entered. A value of 0(zero) for "n" is allowed; zero means packets are sent with no wait time. ------------------------------------------------------------ Command : PARITY n Mnemonic : PAR Default : 3 Parameter : n 0 to 3 selects a parity option from the table below. Refer to : AWLEN, 8BITCONV, RESTART ------------------------------------------------------------ PARITY sets the TNC's data parity for terminal or computer data transfer according to the following table: 0 = no parity 1 = odd parity 2 = no parity 3 = even parity The parity bit, if present, is stripped automatically on input, and is not checked in the Command and Converse Modes. In the Transparent Mode all eight bits (including parity) are transmitted in packets. When "no parity" is set and AWLEN is 7, the eighth bit is set to 0 (zero). ____________________________________________________________ Command : PASS n Mnemonic : PAS Default : $16 Parameter : n 0 to $7F(0 to 127 decimal) specifies an ASCII character code. Refer to : BTEXT, CTEXT, DTEXT, MTEXT ------------------------------------------------------------ PASS selects the ASCII character used for the "pass" input editing command. The Parameter "n" is the numeric ASCII code for the character you will use to signal that the character immediately following it is to be included in a packet or text string. NOTE: You can enter the code in either hex or decimal. Use the PASS character (default is ) to send characters that usually have special functions. A common use for the pass character is to allow to be included in the BTEXT, CTEXT, DTEXT and MTEXT messages so that the transmitted information appears on several short lines rather than a single longer line. Use the PASS character to insert at the end of a short line: Example: BT Notice: Meeting at the Firehouse tonight at 8:00 PM. All welcome ! The other station's monitor shows: Notice: Meeting at the Firehouse tonight at 8:00 PM. All welcome ! Without the PASS character, the ,message would probably look this: Notice: Meeting at the Firehouse tonight at 8:00 PM. All welcome ! In like manner, you can include in text when you are in the Converse Mode to send multiline packets. (The default send-packet character is .) ------------------------------------------------------------ Command : PASSALL ON/OFF Mnemonic : PASSA Default : OFF Parameter : ON Your TNC will accept packets with invalid CRCs (Cyclic Redundancy Check). OFF Your TNC will only accept packets with valid CRCs. Refer to : MHEARD, RETRY ------------------------------------------------------------ PASSALL permits the TNC to display packets received with invalid CRC fields; the error-detecting mechanism is turned off. Packets are accepted for display despite CRC errors if they consists of an even multiple of eight bits and are up to 330 bytes. The TNC attempts to decode the address field and displays the call sign(s) in the standard monitor format, followed by the text of the packet. PASSALL is normally turned off, therefore, the protocol ensures that received packet data is error-free by rejecting packets with invalid CRC fields. PASS (sometimes called "Garbage Mode") may be useful for testing a marginal RF link or during operation under other unusual conditions or circumstances. When you set PASSALL ON, while monitoring a moderately noisy channel "packets" are displayed periodically because there is no basis for distinguishing between actual packets and random noise. NOTE: When PASALL is ON, logging of station heard (for display by MHEARD) is disabled; the call sign detected may be incorrect. ------------------------------------------------------------ COMMAND : PERSIST n Mnemonic : PE Default : 127 Parameter : n 0 to 255 specifies the threshold value for random number attempt to transmit. 0 Signifies a 1/256th chance of transmitting every SLOTTIME. 255 Causes the TNC to transmit right away without delay. Refer to : PPERSIST, SLOTTIME ------------------------------------------------------------ The PERSIST command works with the SLOTTIME command to achieve true p-persistent CSMA (Carrier-Sense Multiple Access)in the KISS TNC mode and in AX.25 operation. However, no real advantage will be obtained in AX.25 operation unless the order stations on the channel are also using PERSIST and SLOTTIME. When the host (your computer) has queued data for transmission, the TNC monitors DCD (Data Carrier Detect) signal from its internal modem. The TNC waits indefinitely for DCD to go inactive. When the Channel is clear, the TNC generates a random number between 0 and 255. If this number is less than or equal to "P" the TNC keys the radio's PTT line, wait 0.01 x TXDELAY seconds, and then transmits all frames in the queue. The TNC then unkeys the PTT line ad returns to the idle state. If the random number is greater than "P", the TNC wait 0.01 x SLOTTIME seconds and repeats the procedure. If the DCD signal has gone active during this wait time, the TNC waits for DCD to clear before it continues. The TNC waits an exponentially-distributed random interval after it senses that the channel is clear before it tries to transmit. When PERSIST and SLOTTIME are carefully set, several stations sending traffic are much less likely to collide with each other when they simultaneously detect that the channel is clear. NOTE: P=255 directs the TNC to transmit as soon as possible, regardless of the random number. ------------------------------------------------------------ Command : PPERSIST ON/ OFF Mnemonic : PP Default : OFF Parameter : ON The TNC uses PERSIST and SLOTTIME parameters when it executes p-persistent CSMA (Carrier Sense Multiple Access). OFF The TNC uses DWAIT for TAPR-type 1 persistent CSMA. Refer to : PERSIST, SLOTTIME ----------------------------------------------------------- When PPERSIST is set to ON, the TNC uses the PERSIST and SLOTTIME parameters for p-persistent CSMA instead of normal TAPR-type DWAIT procedure to achieve CSMA operation. PPERSIST may be used in both KISS TNC and normal AX.25 operation. Set PPERSIST to ON if you operate the frequency has many PBBSs activity. ------------------------------------------------------------ Command : READ Mnemonic : R Default : Immediate Command Parameter : none Refer to : "Using the Bulletin Board Feature" in the Operating Instruction Manual. ------------------------------------------------------------ READ command reads BBS files. ------------------------------------------------------------ Command : RAMTEST Mnemonic : RAMTEST Default : Immediate Command Parameter : none Refer to : ABAUD, RESET, RESTART ------------------------------------------------------------ RAMTEST is an immediate command to proceed RAM check and initialize the TNC to the factory default. RAMTEST takes approximately 10 seconds. ------------------------------------------------------------ Command : RETRY n Mnemonic : RE Default : 10 Parameter : n 0 to 15 specifies the maximum number of packet retries. Refer to : FRACK, CONPERM, TRIES ------------------------------------------------------------ The AX.25 protocol uses retries - re-transmission of frames that have not been acknowledged. Frames are re-transmitted "n" times before the link is disconnected. The time between retries specified by the command FRACK. A value of 0 for "n" specifies an infinite number of retries. ------------------------------------------------------------ Command : RECONNECT call1[VIA call2[,call3...call9]] Mnemonic : REC Default : Immediate command Parameter : call1 This is the call sign of the station you are trying to reconnect to. call2 Optional call sign(s) or station(s) you are attempting to digipeat through. You can use up to eight digipeat stations. Refer to : CONNECT, DISCONNE ------------------------------------------------------------ The RECONNECT command allows you to change the path you are using to communicate with another station. NOTE: This command works only when you are already connected to the station you are attempting to reconnect to. When you use this command, any frames that may be in process between your station and the station you are reconnecting to may be lost. ------------------------------------------------------------ Command : REDISPLA n Mnemonic : RED Default : $12 Parameter : n 0 to $7F (0 to 127 decimal) specifies an ASCII character code. Refer to : FLOW ------------------------------------------------------------ REDISPLA changes the redisplay-line input editing character code. Parameter "n" is the numeric ASCII code for the character you will use when you want to re-display the current input line. NOTE: You can enter the code in either hex or decimal. Type the REDISPLA character to re-display a line you have just typed. The following things will happen: 1) Type-in flow control is temporarily turned off (if it had been active). Any incoming packets that are pending are displayed. 2) A is appended to the line you just typed and the line is shown below it. Only the final form of the line is shown if you have deleted or changed any characters. 3) You can now continue typing where you left off. Use the redisplay-line character to see a "clean" copy of your input if you are using a printing terminal and you have deleted characters. If BKONDEL is set OFF, deletions are designated with characters, rather than by trying to correct the input line display. The re-display line is the corrected text. Use the REDISPLA character if a packet is received while you are typing a message in the Converse Mode. You can see the incoming message before you send your packet without canceling your input. ------------------------------------------------------------ Command : RELINK ON/OFF Mnemonic : REL Default : OFF Parameter : ON In AX.25 versions 1 and 2, the TNC will automatically try to reconnect the other station after the link has timed out on retries. OFF The TNc will not attempt to re-establish the failed link. Refer to : RETRY, TRIES, CONPERM ------------------------------------------------------------ When RELINK is set to ON, the TNC attempts to reconnect by sending SABM frame (connect requests) after retrying out. When RELINK is set to OFF, the TNC forces a disconnect by sending a DISC frame (DISCONNECT COMMAND) after retrying out. Set RELINK to OFF when using the TNC with host computer applications, computer-based message systems and electronic mail programs. ------------------------------------------------------------ Command : RESPTIME n Mnemonic : RES Default : 5 Parameter : n 0 to 250 specifies 100 millisecond intervals. Refer to : DWAIT ------------------------------------------------------------ RESPTIME adds a minimum delay before the TNC sends acknowledgment packets. This delay may run concurrently with the default wait time set by DWAIT and any random wait in effect. Use RESPTIME delay to increase throughput during operations such as file transfer when the sending TNC usually sends the maximum number of full-length packets. Occasionally, the sending TNC many not have a packet ready in time to prevent transmission from being stopped temporarily, with the result that the acknowledgement of earlier packets collides with the final packet of the series. These collisions can be avoided if the receiving TNC sets RESPTIME to 10. ------------------------------------------------------------ Command : RESET Mnemonic : RESET Default : Immediate command Parameter : none Refer to : RESTART, RAMTEST ------------------------------------------------------------ RESET is an immediate command that resets all parameters to the TNC's PROM default settings and reinitializes the TNC. WARNING: All personalized parameters are monitor lists are lost. To reinitialize the TNC using the parameter values in bbRAM, turn the TNC off then on, or use the RESTART command. ------------------------------------------------------------ Command : RESTART Mnemonic : RESTART Default : Immediate Command Parameter : none Refer to : RESET, RAMTEST ------------------------------------------------------------ RESTART is an immediate command that reinitializes the TNC using the defaults stored in the TNC bbRAM. Your personalized parameter settings are retained unchanged, except data stored in MHARD and LOG. The effect of the RESTART command is the same as turning the TNC OFF, then ON again. RESTART does not reset the parameter values in bbRAM. See the RESET command. ------------------------------------------------------------ Command : ROUTE ON/OFF Mnemonic : ROU Default : ON Parameter : ON Includes routing information in received FWD mail. OFF Excludes routing information in received FWD mail. Refer to : none ------------------------------------------------------------ ROUTE command enables or disables whether the display shows the routing information in FWD mail. If ROUTE is set to OFF, routing information in the FWD mail received is excluded on the display. If you wish to know the FWD mail routing information, set ROUTE to ON to show the all routes. ------------------------------------------------------------ Command : RSFLOW ON/OFF Mnemonic : RS Default : ON Parameter : ON Enables hardware flow control. OFF Disable the hardware flow control when the XFLOW is set to ON. Refer to : XFLOW, FLOVER ------------------------------------------------------------ RSFLOW is select the method of flow control between your TNC and terminal. When RSFLOW is set to ON, the flow control is performed same as the TAPR TNC-2. (If XFLOW is set to ON, both software and hardware flow control is performed.) When RSFLOW is set to OFF, software flow control is performed only when the XFLOW is set to ON. If XFLOW is set to OFF, only hardware flow control (DTR or RTS) is performed. ------------------------------------------------------------ Command : RXBLOCK ON/OFF Mnemonic : RX Default : OFF Parameter : ON Direct the TNC to pace a $FF mark in front of received packets before they are printed on your terminal. OFF Does not place a $FF mark in front of received packets. Refer to : none ------------------------------------------------------------ The $FF mark makes easier to identify incoming packets. When RXBLOCK is ON, your TNC automatically places a $FF mark in front of all incoming packets. The order of identity is: ----------------------------------------------------- | $FF | LH | LL | PID | DATA UNIT | ----------------------------------------------------- (PREFIX ) (LENGTH) (PID) (DATA) where : $FF is the header identify block (1 byte). LH is the block length high byte (1 byte, high 4 bit, 111 fixed). LL is the block length low byte (1 byte). PID is the protocol indent of the control field of the received packet. DATA UNIT is the contents of the received packet. NOTE: When use this command, check AUTOLF and MFILTER settings. ------------------------------------------------------------ Command : SCREENLN n Mnemonic : S Default : 0 Parameter : n 0 to 255 specifies the screen or platen width,in characters, of the terminal. Refer to : none ------------------------------------------------------------ The SCREENLN command allows you to properly format your terminal's output. A , sequence is sent to the terminal at the end of a line in the Command and Converse modes after "n" characters have been printed. An "n" value of zero inhibits this function. NOTE: If your computer automatically formats output lines, set SCREENLN 0 to avoid a conflict between the two line formats. ------------------------------------------------------------ Command : SENDPAC n Mnemonic : SE Default : $0D Parameter : n 0 to $7F ( 0 to 127 decimal) specifies an ASCII character code. Refer to : PACLEN, CR, CPACTIME ------------------------------------------------------------ Use the SENDPAC command to select the character used to force a packet to be sent in the Converse Mode. The parameter "n" is the numeric ASCII code for the character you want to use to force your input to be packetized and queued for transmission. You can enter the code in either hexadecimal or decimal numbers. Use default SENDPAC value $0D for ordinary conversation with CR ON to send packets at natural intervals with <s> included in the packet. When you are setting CPACTIME ON, set SENDPAC to some value not ordinarily used (say, , with CR OFF). This setting forces packets to be sent without extra characters being sent in the text. ------------------------------------------------------------ Command : SLOTTIME n Mnemonic : SL Default : 10 Parameter : n 0 to 250 specifies the time interval during which the TNC waits between generating random numbers to see if it can transmit. Refer to : PERSIST, PPERSIST ------------------------------------------------------------ The SLOTTIME command works with the PPERSIST and PERSIST command to achieve true p-persistent CSMA (Carrier Sense Multiple Access) in KISS TNC mode and normal AX.25 operation. No real advantage, however, is obtained during AX.25 operation unless other stations on the channel are also using PERSIST and SLOTTIME. ------------------------------------------------------------ Command : SOFTDCD ON/OFF Mnemonic : SOFTDCD Default : OFF Parameter : ON Carrier Detect is performed by software. OFF Hardware Carrier Detect. Refer to : none ------------------------------------------------------------ If some reasons, if you cannot set your radio's squelch control to mute the back ground noise, the TNC cannot respond to the other station. However, if SOFTDCD is set to ON, carrier detect decision is performed by software and your TNC can respond to the other station. Some hand-held transceivers incorporate with a "Power Save" feature, if the radio cannot turn OFF the circuit the TNC tends to retries cause by the power save reception. If this is a case, open the squelch and set SOFTDCD to ON minimizes the retries caused by the power save. ------------------------------------------------------------ Command : SQUELCH ON/OFF Mnemonic : SQ Default : OFF Parameter : ON The TNC responds to positive-going squelch voltage. OFF The TNc responds to negative-going squelch voltage. Refer to : none ------------------------------------------------------------ Although you can set SQUELCH to ON, but this TNC is not capable of using an external squelch control. The majority of amateur radio applications does not need this feature. WARNING:Set SQUELCH ON to inhibit the transmission. ------------------------------------------------------------ Command : START n Mnemonic : STA Default : $11 Parameter : n 0 to $7F (0 to 127 decimal) specifies an ASCII characters code. Refer to : STOP, XFLOW, TRFLOW, XOFF, XON, RSFLOW ------------------------------------------------------------ Use the START command to choose the User Start character you want to use to restart output from the TNC to the terminal after you have halted it by typing the User Stop character. NOTES: 1) The User Stop character is set by the STOP command. 2) You can enter the value in either hex or decimal If the User Start and User Stop characters are set to $00, software flow control to the TNC is disabled; the TNC will only respond to hardware flow control (CTS/RTS). If the same character is used for both the User Start and User Stop characters, the TNC alternately starts and stops transmission on receipt of the character ("toggles"). ------------------------------------------------------------ Command : STOP n Mnemonic : STO Default : $13 Parameter : n 0 to $7F (0 to 127 decimal) specifies an ASCII character code. Refer to : START, XFLOW, TRFLOW, XOFF, XON, RSFLOW ------------------------------------------------------------ Use the STOP command to select the User Stop character you want to use to stop output from the TNC to the terminal. Type this character to halt the TNC's output to your monitor so that you can read the received text before it scrolls off your screen display. NOTES: 1) Output is restarted with the User Start character. 2) The User Start character is set by the START command. 3) You can enter the value in either hex or decimal. ------------------------------------------------------------ Command : STREAMSW n Mnemonic : STR Default : $01 Parameter : n 0 to $7F (0 to 255) specifies an ASCII character code. Refer to : CSTATUS, USERS, STREAMCA, STREAMDB, LCSTREAM ------------------------------------------------------------ STREAMSW selects the characters used by both the TNC and the user to show that a new connection channel is being addressed. The character can be PASSed in the Converse Mode. This character is always ignored as a user-initiated channel switch in the Transparent Mode; it just flows through as data. NOTES: 1) You cannot change the outgoing channel while the TNC is active or "on-line" in the Transparent Mode. 2) To switch channels, ESCAPE to the Command Mode. Then enter the Converse Mode to use the STREAMSW command. Refer to STREAMCA for further use of STREAMSW. ------------------------------------------------------------ Command : STREAMCA ON/OFF Mnemonic : STREMC Default : OFF Parameter : ON Call sign of the other station is displayed in multiple connection operation. OFF Call sign of the other station is not displayed. Refer to : CSTATUS, USERS, STREAMSW, STREAMDB ------------------------------------------------------------ STREAMCA displays the call sign on the "connected-to" station after the channel identifier. Set STREAMCA ON if you intend to operate multiple connections (as opposed to having your "host" computer operated multiple connections). STREAMCA is especially useful when you are operating with multiple connections. Using STREAMCA is similar to using MRPT to show digipeater paths when you are monitoring the channel. EXAMPLES: 1) When STREAMCA is OFF, the monitored activity looks like this: :A hi bob hi ted how goes it? :B *** CONNECTED to W6YEY :B must be a dx record. :A unreal ted :B big band opening 2) When STREAMCA is ON, the same activity looks like the following. :A: W6UOU: hi bob hi ted how goes it? :B: W6YEY:*** CONNECTED to W6YEY :B: must be a dx record. :A: unreal ted :B: W6YEY:big band opening With STREAMCA ON, ":A" becomes ":A::" ------------------------------------------------------------ Command : STREAMDB ON/OFF Mnemonic : STREAMD Default : OFF Parameter : ON Received STREAMSW characters appear twice (doubled). OFF Received STREAMSW characters appear once (not doubled). Refer to : CSTATUS, USERS, STREAMSW, STREAMCA, LCSTREAM ------------------------------------------------------------ STREAMDB displays received STREAMSW characters as double characters. In the following example, STREAMDB is ON and STREAMSW is set to "|": || this is a test. The sending station actually transmitted: | this is a test. The same frame received with STREAMDB OFF would be displayed as: | this is a test. NOTE: Set STREAMDB ON when you operate with multiple connections so you can tell the deference between STREAMSW characters received from the other stations and STREAMSW characters generated by your TNC. NOTE: STREAMSW characters must not be one of the channel numbers (A through K) for this command to function properly. ------------------------------------------------------------ Command : TRANS Mnemonic : T Default : Immediate Command Parameter : none Refer to : COMMAND, CMDTIME, CONVERSE ------------------------------------------------------------ TRANS is an immediate command that switches the TNC from the Command Mode to the Transparent Mode. The current state of the radio link is not affected. Transparent mode is primarily useful for computer communications. In the Transparent Mode, "human interface" features such as input editing, echoing of input characters, and type-in flow control are disabled. Use the Transparent Mode when you need to transfer binary or other non-text files. ------------------------------------------------------------ Command : TCLEAR Mnemonic : TC Default : Immediate command Parameter : none Refer to : CANLINE ------------------------------------------------------------ The TCLEAR command clears the TNC's transmit buffer and cancels further transmission of data except for a few remaining packets. NOTE: You must be in the command mode to use TCLEAR NOTE: Use the (default) command to return to the Command Mode. ------------------------------------------------------------ Command : TIME n Mnemonic : TI Default : $14 Parameter : n 0 to $7F (0 to 127 decimal) specifies an ASCII character code. Refer to : DAYSTAMP, DAYTIME ------------------------------------------------------------ The TIME command specifies an ASCII character in the text you type into the transmit buffer or into a text file stored on disk. This feature can be used in BTEXT, CTEXT, DTEXT, MTEXT if you want to send a current time information from the TNC's clock. Type to embed the TIME command in your text file. At transmit time, the TNC reads the embedded control code (default ), reads the time of day from the TNC's internal clock and then sends the time to the other station. When DAYSTAMP is set ON, the date is transmitted with the time. ------------------------------------------------------------ Command : TOUT n Mnemonic : TOUT Default : 30 Parameter : n 0 to 250 specified the time-out value for the message board in 10 second intervals. Refer to : RELINK, CHECK ------------------------------------------------------------ TOUT specifies the time out value for the message board. If your TNC cannot hear the connected station's signal more than the TOUT period in BBS operation, your TNC forces to disconnect the link. WARNING: If the RELINK is set to ON, the disconnect process cannot be performed. ------------------------------------------------------------ Command : TRACE ON/OFF Mnemonic : TRAC Default : OFF Parameter : ON Trace function is activated. OFF Trace function is disabled. Refer to : none ------------------------------------------------------------ The TRACE command activates the AX.25 protocol display. If TRACE is ON, all received frames are displayed in their entirety, including all header information. NOTE: Be careful when you use mnemonic - do not use "TRA"! TRA cause the Controller to change to the Transparent Mode. The TRACE display is shown as it appears on an 80-column display. The following monitored frame is a sample: W2XYZ* > TESTER : Byte Hex Shifted ASCII ==== === ============= 000: AA88AA6A8 8AA460AE 6494AA0 406103F0 TESTERoW2XYZ ASCII ===== o.x .....`d...@a.. The byte column shows the offset into the packet of the beginning byte of the line. The hex display column shows the next 16 bytes of the packet, exactly as received, in standard hex format. The shifted ASCII column decodes the high-order seven bits of each bytes as an ASCII character code. The ASCII column decodes the low-order seven bits of each bytes as an ASCII character code. In standard AX.25 packet: 1) The call sign address field is displayed correctly in the ASCII column. 2) A text message is displayed correctly in the ASCII column. 3) Non-Printing characters and control characters are displayed in both ASCII fields as period ("."). You can examine the hex display field to see the contents of the SSID byte and the control bytes used by the protocol. ------------------------------------------------------------ Command : TRFLOW ON/FF Mnemonic : TRF Default : OFF Parameter : ON Software flow control for the computer or terminal can be activated in the Transparent Mode. OFF Software flow control for the computer or terminal is disabled in the Transparent Mode. Refer to : START, STOP, XFLOW, TXFLOW ------------------------------------------------------------ If TRFLOW is ON, the type of flow control used in the Transparent Mode is determined by how START and STOP are set. If TRFLOW is OFF, only "hardware" flow control (CTS, RTS) is available to the computer and all characters received by the TNC are transmitted as data. If START and STOP are set to $00, the user Stop and User Start characters are disabled - hardware flow control must be used by the computer. If TRFLOW is ON, and START and STOP are set to values other than zero, software flow control is enabled for the user's computer or terminal. The TNc responds to the User Start and User Stop characters (set by START and STOP) while remaining transparent to all other characters from the terminal. Unless TXFLOW is also ON< only hardware flow control is available to the TNc to control output from the terminal. ------------------------------------------------------------ Command : TRIES n Mnemonic : TRI Default : 0 Parameter : n 0 to 15 specifies the current RETRY level on the selected input channel. Refer to : RETRY ------------------------------------------------------------ TRIES retrieves (or forces) the count of "tries" on the data channel presently selected. If you type tries without an argument, the TNC returns the current number of tries if an outstanding unacknowledged frame exists. If no outstanding unacknowledged frame exists, the TNC returns the number of tries required to get an ACK for the previous frame. If RETRY is set to zero(0), the TRIES command always returns zero. Use TRIES for gathering statistics on a given path or channel. TRIES is especially useful for computer-operated stations (such as automatic message-forwarding stations) using less-than-optimal, noise HF or satellite channels or paths. Using TRIES under these conditions automatically optimized the PACLEN and MAXFRAME parameters. If you type TRIES with an argument, the 'tries' counter is forced to the entered value. Using this command to force a new count of tries is not recommended. ------------------------------------------------------------ Command : TXDELAY n Mnemonic : TX Default : 50 (500ms) Parameter : n 0 to 120 specifies 10 mS intervals. Refer to : AXDELAY, AXHANG ------------------------------------------------------------ The TXDELAY command tells the TNC how long to wait before sending packet frame data after keying your transmitter's PTT line. All transmitters need some amount of start-up time to put a signal on the air; some need more, some need less. Some general rules apply to these: 1) Crystal-controlled radios with the diode T/R switches are faster 2) Synthesizer radios need time for phase-lock-loop to lock. 3) Radios with mechanical transmit /receive relays need more time. 4) External amplifiers that use RF-driven relay switching usually require you to increase TXDELAY to allow for the additional delays. Experiment to determine the best TXDELAY value for a specific radio. TXDELAY can also compensate for certain characteristics of the radio used by the station which you are communicating with. If the distant station's radio has slow AGC recovery or squelch release times when it is switching from transmit to receive, increasing your TXDELAY may reduce retries and improve throughput by retarding the start of your data until the other receiver has reached full sensitivity. ------------------------------------------------------------ Command : TXFLOW ON/OFF Mnemonic : TXF Default : OFF Parameter : ON Software flow control for the TNC can be activated in the Transparent Mode. OFF Software control for the TNC is disabled in the Transparent Mode. Refer to : XON, XOFF, XFLOW, TRFLOW ------------------------------------------------------------ When TXFLOW is ON, the setting of XFLOW determines the type of flow control used in Transparent mode. When TXFLOW is OFF, the TNC uses only hardware flow control; all data sent to the terminal remains fully transparent. When TXFLOW and XFLOW are ON, the TNC uses the Start and Stop characters ( set by XON and XOFF) to control the input from the terminal. Unless TRFLOW is also ON, only hardware flow control is available to the computer or terminal to control output from the TNC. ------------------------------------------------------------ Command : TXUIFRAM ON/OFF Mnemonic : TXU Default : ON Parameter : ON Unprotocol packet transmission is activated. OFF Unprotocol packet transmission is disabled except beacon and digipeat. Refer to : NEWMODE, NOMODE ------------------------------------------------------------ If TXUIFRAM is set to OFF cause the TNC to disable the capability of sending unprotocol packet (CQ), except beacon and digipeat. All packet data is transmitted to the other station during the connect state. All packet data from the terminal during the disconnected state is discarded to prevent from the spill over to the other unconnected stations. Set this command to OFF helps BBS operation. (Set TXUIFRAM OFF and NEWMODE OFF) If you wish to send CQ, or wish to communicate with other station with unprotocol mode, set TXUIFRAM to ON. ------------------------------------------------------------ Command : UNPROTO call1[VIA call2[,call3...,call9]] Mnemonic : U Default : CQ Parameter : Call1 Call sign to be placed in the TO address field. Call2-9 Optional digipeater call list, up to eight calls. Refer to : CONNECT ------------------------------------------------------------ UNPROTO sets the digipeat and destination address fields or packets sent in the unconnected (unprotocol) mode. Unconnected packets are sent as un-sequenced I-frame with the destination and digipeat fields taken from "call1" through "call9" options. When a destination is not specified, unconnected packets are sent to "CQ". You can monitor unconnected packets sent from other packet stations by setting MONITOR ON. ------------------------------------------------------------ Command : USERS n Mnemonic : US Default : 1 Parameter : n 0 to 10 specifies the number of active simultaneous connections that can be established with your TNC. Refer to : STREAMSW ------------------------------------------------------------ USERS only affects the way that incoming connect requests are handled. It does not affect the number of connections you initiate with your TNC. For example: USERS 0 Allows incoming connections on any free logical channel. USERS 1 Allows incoming connections on logical channel 0 only. USERS 2 Allows incoming connections on logical channel 0 and 1. USERS 3 Allows incoming connections on logical channel 0, 1 and 2, and so on, through USERS 10. ------------------------------------------------------------ Command : WRITE Mnemonic : W Default : Immediate Command Parameter : none Refer to : "Using the Bulletin Board Feature" in the Operating Instruction Manual. ------------------------------------------------------------ WRITE command write a file or message to BBS. ------------------------------------------------------------ Command : XFLOW ON/OFF Mnemonic : X Default : ON Parameter : ON XON/XOFF (software) flow control is activated. OFF XON/XOFF flow control is disabled - hardware control is enabled. Refer to : TRFLOW, TXFLOW, START, STOP, XON, XOFF, FLOVER, RSFLOW ------------------------------------------------------------ When XFLOW is ON, software flow control is in effect; it is assumed that the computer or terminal will respond to the TNC's start and stop characters defined by the XON and XOFF commands. When XFLOW is OFF, the TNc uses hardware flow control command on the CTS and RTS line. ------------------------------------------------------------ Command : XMITOK ON/OFF Mnemonic : XMITO Default : OFF Parameter : ON Transmit functions (PTT line) are active. OFF Transmit functions (PTT line) are disabled. Refer to : CONOK, DIGIPEAT, MYCALL ------------------------------------------------------------ When XMITOK is OFF, the PTT line to your transmitter is disabled; the transmit function is inhibited. All other TNC functions remain the same. Your TNC generates and sends packets as requested, but does not key the radio's PTT line. Use the XMITOK command at any time to ensure that your TNC does not transmit. Set XMITOK OFF if you are absent and wish to leave your TNC on as a channel activity monitor. Set XMITOK OFF for testing in loopback or direct wire connections when PTT operation is not required. ------------------------------------------------------------ Command : XOFF n Mnemonic : XO Default : $13 Parameter : n 0 to $7F ( 0 to 127 decimal) specifies and ASCII code. Refer to : START, STOP, XFLOW, XON, TXFLOW ------------------------------------------------------------ Use XOFF to select the stop character to be used to stop input from the computer or terminal. You can enter the code in either hex or decimal. NOTE: You can entire the code in either hex or decimal. The Start character default value is for computer data transfers. If you are operating in the Converse Mode and there is a chance that activity might fill the TNC's buffers, you can define the Stop character as ($07), which "beeps" many terminals. ------------------------------------------------------------ Command : XON n Mnemonic : XON Default : $11 Parameter : n 0 to $7F (0 through 127 decimal) specifies an ASCII character code. Refer to:START, STOP, XFLOW, XOFF, TXFLOW ------------------------------------------------------------ XON selects the TNC start character that is sent to the computer or terminal to restart input from the device. NOTE: You can entire the code in either hex or decimal. The Start character default value is for computer data transfers. If you are operating in the Converse Mode and there is a chance that activity might fill the TNC's buffers, you can define the Stop character as ($07), which "beeps" many terminals.