For more information, including how to operate Echolink from your PC, go to the Echolink page at http://www.echolink.org/el/.  To use the Echolink simplex connection on 145.725, use the following commands.
 

Command Description Default
Connect Connects to a station on the Internet, based on its node number.                                             num
Connect by Call Connects to a station on the Internet, based on its callsign.                                          C+call+#
Random Node Selects an available node (of any type) at random, and tries to connect to it.                  00
Random Link Selects an available link or repeater (-L or -R) at random, and tries to connect to it.        01
Random Conf Selects a conference server at random, and tries to connect to it.                                    02
Random User Selects an available single-user station at random, and tries to connect to it.                     03
Disconnect Disconnects the station that is currently connected.                                                              #
Reconnect Re-connects to the station that most recently disconnected.                                                  09
Status Announces the callsign of each station currently connected.                                                         08
Link Down Disables EchoLink (no connections can be established).                                                     (none)
Link Up Enables EchoLink.                                                                                                                 (none)
Play Info Plays a brief ID message.                                                                                                      *
Query by Call Looks up a station by its callsign, and reads back its node number and status.                07+call+#
Query by Node Looks up a station by its node number, and reads back its callsign and status.             06+num

Connect

The default for the Connect command is to simply enter the 4- or 5-digit node number to which you wish to connect.  To prevent interference with other DTMF functions, however, you may wish to configure a special prefix, such as A or 99.

Link Up and Link Down

No defaults are provided for these functions.  To enable these functions, enter a DTMF sequence for each one, using the DTMF tab of the Sysop Settings page.

Entering Node Numbers

To enter a node number (for the Connect or Query by Node commands), enter the 4- or 5-digit node number.  If the specified node is not among the stations currently logged on, EchoLink will say "NOT FOUND".

Entering Callsigns

To enter a callsign (for the Conenct by Call or Query by Call commands), press two digits for each letter and number in the callsign.  The first digit is the key on which the letter appears (using 1 for Q and Z), and the second digit is 1, 2, or 3, to indicate which letter is being entered.  To enter a digit, press the digit followed by 0.  When finished, end with the pound key (#).

For example, the letter "K" is entered as "52", the letter "Q" is entered as "11", and the digit "7" is entered as "70".

Callsigns need not be entered in full.  If a partial callsign is entered, EchoLink will find the first match among the stations currently logged on.  If no match is found among the stations currently logged on, EchoLink will say "NOT FOUND".

Examples

(These examples assume that the default DTMF codes are configured.)

To connect to node number 4118
Enter:  4 1 1 8

EchoLink responds with:

"CONNECTING TO CONFERENCE C-Q-D-X"

followed by

"CONNECTED"

because 4118 is the node number of conference server "CQ_DX".

To get the status of K1RFD:
Enter:  0 7 5 2 1 0 7 2 3 3 3 1 #

EchoLink responds with:

"K-1-R-F-D 1-3-6-4-4 BUSY"

because 13644 is the node number of station K1RFD, and K1RFD is currently busy.

To connect to a random link or repeater:
Enter: 0 1

EchoLink responds with:

"CONNECTING TO K-1-O-F REPEATER"

followed by

"CONNECTED"

because K1OF-R was selected at random.
 

This information from W1WL and the N1ME page at www.n1me.com  (with thanks!)