New way to link repeaters over the Internet

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hwstar
Posts: 29
Joined: Thu Sep 16, 2004 8:39 pm

New way to link repeaters over the Internet

Post by hwstar »

Hi,

I'm one of the developers working on a new program used to link repeaters over the internet. Our software runs under Linux and uses the open source Asterisk PBX. Some of the unique features are:

The ability to run several repeaters off of one PC. We can do this because we use TDM (Time Domain Multiplexing) hardware, and not a sound card. For example, if you use a T1 adapter card and a channel bank, you can control up to 12 separate repeaters or remote bases simultaneously. Each repeater/ remote is autonomous and can be a separate node on an internet linked system. We use 4 wire audio from the TDM card(s) to a small adapter card which you can build yourself. The adapter card
creates COR,PL, PTT, and TX and RX audio signals from the 4 wire connection. We are full duplex through the entire audio path including links due to the 4 wire connection scheme. All linking is done with the IAX2 protocol under Asterisk which is very efficient on bandwidth.

Commanding a the far-end node on a linked system. Functions are able to be executed on a remote node by going into "command mode" on the near-end node you are accessing.

Autonmous remote base nodes. Our VHF/UHF remote base implementation allows autonomous connection from any node (one node at a time). Using the remote base node does not tie up any repeater nodes at the same site. We currently support the Doug Hall remote base interface using Kenwood TM-series radios.

An Autopatch based on VOIP or POTS (your choice). Since the underlying software is the Asterisk PBX, you have all the resources of a telephone softswitch at your disposal. to have the calls go through Voice Service Provider such as Voicepulse without having a local phone line dedicated for Autopatch service.

For more information take a look at the following links:

http://www.zapatatelephony.org/app_rpt.html
http://www.allstarlink.org


Steve Rodgers
WA6ZFT
/\/\y 2 cents
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Posts: 851
Joined: Sun Nov 11, 2001 4:00 pm
What radios do you own?: iPhone, Blackberry, HT220

Post by /\/\y 2 cents »

Hi,

coincidentally my name is steve too.

check your PM's, I have a few questions regarding your device.

Thanx
Steve
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