[App_rpt] "How to" for a simplex radio station

Steve Rodgers hwstar at rodgers.sdcoxmail.com
Tue May 9 00:17:31 EDT 2006


We support simplex operation with the duplex= statement in the node block. 
Normally the default is duplex=2 which is a full duplex repeater. Duplex=0 is 
a simplex node with no telemetry, and duplex=1 is a simplex node with 
telemetry. Telemetry is command responses, ID's, etc.

For node use, app_rpt requires 2 FXS ports are required per node (one for TX 
and one for RX) Regardless if it is duplex or not.

On Monday 08 May 2006 05:42, f6hqz-m at hamwlan.net wrote:
> Hello Jim and Steve,
> I hope all is fine for you two  :-)
> I am tempting to connect few simplex stations (1 VHF, 1 UHF and 1 HF) to my
> Asterisk in my chack.
> I want to connect them directly to my TDM2433E card, because I have "too
> much" FXS lines available.
> So, I am wondering how to use this FXS lines and I have probably missed
> something because I can't.
> I have searched some examples on Voi-info, Zapata and QRV web sites,
> without seen any kind of help for my usage or few explanations about the
> method used for COR and PTT actions through such a FXS.

You need our ARIB board for this. 

> If I read the zapata. and zaptel.conf exampel files included into the
> Asterisk distro, I can see that it seems to be possible to use 2 different
> kinds of signaling for FXS and radio : E&M or "sf" or "fxsks" or "fxsgs" in
> zaptel.conf, and em_txrx or sf_txrx in zapata.conf...
> I don't understand well what I must use for my situation (I don't know how
> works E&M signaling exactly).
> I have choosen em_txrx thinking that this could be used on only one FXS
> channel to have COR and PTT.

E&M is just a placeholder for implementing COR and PTT signalling and only 
used with the quad radio PCI card.

You do it like this...


fxogs=17 # TX bench test pair channel 17 on channelbank
fxols=18 # RX bench test pair channel 18 on channelbank


; Channel 17,18

callerid="Bench TX"<117>
channel = 17

callerid="Bench RX"<118>
channel = 18


[112] ; node block

rxchannel = Zap/18                      ; Rx audio/signalling channel
; Note: if you use a unified interface (tx/rx on one channel), only
; specify the rxchannel and the txchannel will be assumed from the rxchannel
txchannel = Zap/17                      ; Tx audio/signalling channel

duplex = 1;		Simplex node with telemetry
; Other config stuff for the node block (don't assume that the lines above are 
all that is required!!!!

> But, I can't access to my "node" when I tempt to call it with apt(100) or
> apt(100|X) into extensions.conf.
> Asterisk console tells me :
> May  8 14:32:23 WARNING[1562]: app_rpt.c:5866 rpt_exec: Cannot find
> specified system node 001
> In my rpt.conf, I have very few lines for this first test link :
> [001]                                   ; Node ID of first repeater
> ;VHF Base #1 FT290R
> rxchannel = Zap/2                       ; Rx audio/signalling channel
> context = HAMWLAN                       ; dialing context for phone
> callerid = ""F6HQZ_VHF_BASE1" <77005>   ; Callerid for phone calls
> [nodes]
> 001=radio at,NONE
> So dear OM's, could you help me to start this simplex stations that I want
> to add to your main Asterisk radio network ?
> May be it could be nice to write some such paper in the voip-info wiki to
> have a real example to start easyly ?
> I hope to start my radio link before the may 20th, due to a HAMfest in
> France with hudreds of HAMs.
> I will be pleased to annouce and show this first France/USA radio link with
> Asterisk boxes and your RPT application working.
> For now, I have (too) few HAM's connected to my Asterisk box, chating
> together, but having only receivers access (2 HF RX on 7 MHz band).
> If you want check my HF listening channels, I can give you an IAX2 account
> or we can create an IAX2 trunk immediatly that could be used later for our
> future radio link between our two countries.
> Best 73's,
> F6HQZ,
> Francois BERGERET,
> France.

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