I've been playing with VOIP Linking over the years with programs like ILink, EQSO, IRLP, and Echolink.  I tried Allstar many years ago, but was discouraged due to my lack of Linux knowledge and that there was not much documentation on the web.  Well things have changed and I now really appreciate what others have shared. 
Allstar is now by far my favorite..

The Allstar web site to get started is: https://allstarlink.org.  On that site you will find much information as well as the ability to register with Allstar. Once registered, you can request server and node authorization.


Echolink W2YMM-L node 21808 is now on the 900 Repeater too...

I AM CURRENTLY USING Raspberry Pi3 COMPUTERS FOR MY NODES.

The Node interface is the URI from DMK Engineering
As well as the Repeater Builder models on some nodes
INFORMATION ABOUT THE W2YMM ALLSTAR GATEWAY

AllstarLink provides hams with a means of connecting radios (repeaters or simplex links) over the internet. It is built upon the asterisk open source PBX (runs on Linux).  Audio quality is better than EchoLink or IRLP.




        Radio and Interface

My URI is connected to a Motorola Maxtrac

The signal is sent to the repeater using the
repeater pair programmed into the radio.
Not the optimal way of doing it, but it is the
only way for me to do it at this time.

My others are setup as Simplex Nodes and
1 is being tested as a Frequency agile
Remote Base.   (VHF/UHF)


W2YMM ALLSTAR LINK
W2YMM.COM. All Rights Reserved.
  DTMF Function List W2YMM NODES

Allstar Link Node  -- W2YMM -- 
West Islip Long Island NY, USA

*1     =>      Link Disconnect
*2     =>      Link Connect (Monitor Only)
*3     =>      Link Connect
*4     =>      Remote Command
*5     =>      DTMF Shortcuts (Macros)
*6     #       Autopatch     *0 to Disconnect
*70            Link Status
*71   =>     Disconnect a previously permanently connected link
*72  =>      Permanently connect specified link -- monitor only
*73  =>      Permanently connect specified link -- tranceive
*75            Full system status (all nodes)
*76            DISCONNECT ALL LINKS
*80            System Info
*81            Time
*82            Time 24 Hour format
*99            Phone PTT
#              Phone Stop PTT
0              LiTZ   Push and hold for 3 seconds
                (Sends a QC Tone not a 911 call)
To connect to another Allstar node, use the Link Connect (*3) plus the node number.
For example, to connect to node 2000, use *32000.
To Disconnect from a node, use the Link Disconnect (*1) plus the node number. or *71


Autopatch *6+1+Area code+Number / Disconnect *0

*899  Quick Call Page  W2YMM
*550 Autopatch call to W2YMM Cell
*551 Autopatch call to W2YMM Home

ECHOLINK CALLS NEED TO PADDED TO 7 DIGITS

*3   THEN 3 Plus node number  Ex.*3 followed by 3009999  To call the EchoTest Conference
If you call a 6 digit Echolink node, you would dial *3 followed by 3123456
ALLSTAR NODE 28183     |   2nd Node 40822     |  Node 29973 |  Test Node 41899
          900 MHz                                             UHF                                            VHF                                TEST
To access the W2YMM ALLSTAR
from the Telephone Portal
1- Call 1 763 230-0000   (alternate # 1 559 2557827)
2- Enter the Node Number 28183#  (40822 for UHF Rpt)
3- Enter 1 for node access.
4- Enter YOUR 10 digit ALLSTAR User Security PIN.
5- Enter 2 for Function Access or 1 for VOX
6- Enter *99 to Transmit and # to go back to Receive          
(Note, When using mode 2 You will need to repeat step 6 with every transmission)
7- When done, Just hang up.


Asterisk/app_rpt
The fusion of 2-way radio systems and VoIP

My UHF/VHF  Allstar node using a Raspberry Pi

40822                                                            29973
ADDITIONAL NON STANDARD COMMANDS

*971  Enable Parrot Mode
*970  Disable Parrot Mode
*972  Parrot once if Parrot mode is disabled
*973  Parrot cleanup/flush

Weather Commands
CURRENTLY UNAVAILABLE UNTIL NEW UPDATE
986 Play WX from K2IZ Station in Copiague
987 Play any Local WX Alerts
988 Play Suffolk County 5 day forecast

Pager Testing

892     qc tone mfd common and sta 2
894     qc tone pfd common and tone 1
895     qc tone mfd common and sta 1
896     qc tone mfd common and chief
898    qc tone mfd common and chief
899    Two tone paging sequence Medford
897    qc tone npfd common and general

Macros
*50
*51
*52 Connect to  KB4JKL
*53 Connect 900 Hub
*54 Disconnect 900 Hub
*55
*56 Connect to WB2JPQ Interlink System
*57     Connect to Echolink AB2M CONFERENCE *
*58     Connect to Echolink  K2SPD-R  *
*59     Connect to Echolink W2YMM-R  *
*550 Autopatch call W2YMM Cell
*551 Autopatch call W2YMM Home
! Needs to be updated !
(*) 900 NODE ONLY

There is an automatic Macro script
that connects the 900 MHz repeater
to the *AB2M* Conference server
on Monday nights at 8PM Local time
for the K2SPD weekly net.
This should not be your go to source for info, I am sharing what I learned along the way :-)
NODE 43943
Now a portable node
RASPBERRY PI ZERO
(WHAT CAN WE DO WITH THIS THING ??)
MY NODES
28183-927.3125/R
29973-VHF Simplex
40822-UHF Simplex
41899-449.300/R (Testing)
43937-LINY HUB
43943-Portable Node
_________________

Friends ALLMON Pages

KB4JKL 42590
K2SPD SPARC 43361
K4ZPZ
REF9050 BRIDGE
KN2R
GB3PZ
W9PQ

This 28183 Allstar node is frequently connected to the K5TRA 900 MHz Hub