[arm-allstar] arm-allstar Digest, Vol 15, Issue 1

Tue Aug 4 11:57:06 EST 2015

Bernie,

 If you have a remote receiver it has to indicate that it is receiving by presenting a COS signal. simpleusb uses COS. If it does not present the audio will not be heard. Just run duplex=1 and connect COS and set it up in simpleusb.conf.

73 Doug
WA3DSP
http://www.crompton.com/hamradio

> From: bmcintosh at paceprofessional.co.uk
> To: arm-allstar at hamvoip.org
> Date: Tue, 4 Aug 2015 16:23:28 +0100
> Subject: Re: [arm-allstar] arm-allstar Digest, Vol 15, Issue 1
> 
>  Thanks Doug,
> 
> I'm getting a little nearer the explanation.
> 
> I am using fresh RPI2 image, no tinkering and yes, I figured that all
> reports are that it is reliable and should work ok :-)
> 
> I have verified the iaxrpt installation (and tried two laptops and a PC
> elsewhere).
> 
> When iaxrpt audio drops out, I can fix it temporarily with a "rpt reload" at
> the asterisk console. Without touching iaxrpt, the audio returns.
> 
> So I have been playing around further.
> 
> My aim is to use iaxrpt to operate a remote radio. No repeater, no telemtry.
> It is an emergency radio located in a remote mountain area and is to be used
> for mountain rescue communication with the rest of the team using simplex
> handheld radios. 
> 
> I'm not using any form of COS. This particular model of radio doesn't have a
> signal available, but it shouldn't matter. COS is used to determine when a
> repeater should tansmit. This is not a repeater.  The only time it should
> transmit is when pressing the Iaxptt PTT.  At all other times iaxrpt should
> receive the audio stream from the receiver, even when it is squelched. i.e.
> an audio steam that is quiet.
> 
> When I use rpt.conf in duplex=0  then I have the problem of audio dropout
> after a while. Maybe soe kind of timeout, but it is random, sometimes after
> 10 seconds sometimes after 2 minutes.
> 
> So I tried it in duplex=2. The tx of course was on permanently because there
> is no COS signal from the receiver and it thinks that the absence of COS
> means a signal is present on the receiver that should be rebroadcast. That
> makes sense.  Out of curiousity I disconnect the PTT wire so apt-rpt thinks
> that it is in transmit on a duplex repeater, but the radio itself is
> effectively disabled from trasnmitting.
> 
> Of course the receiver is still feeding its audio to apt-rpt and in fact,
> now I am able to operate iaxrpt for as long as I want to listen to the
> signal. The drop out peoblem has gone away. Of course its no use, because
> I've not got the PTT functionality any more because I put it in the "wrong"
> duplex mode for my circumstances - but I thought it was an interesting piece
> of evidence.
> 
> Three questions:
> 
> Should it be possible to remotely access a single radio in half duplex by
> means of iaxrpt without a COS signal being available ?  
> 
> Next question, if so, why can't it be done with the RPI2 image.
> 
> Do you think it is worthwhile trying usbradio and detecting the COS in order
> to make it operate more like the usual configuration that is out there ?
> 
> 
> Thanks and kind regards
> 
> Bernie
> GM4WZG
>  
> 
> So, I need to go back to half-duplex and fix the problem. rpt reload
> exit
> astres.sh
> exit
>     
> 
> > -----Original Message-----
> > From: arm-allstar-bounces at hamvoip.org 
> > [mailto:arm-allstar-bounces at hamvoip.org] On Behalf Of 
> > arm-allstar-request at hamvoip.org
> > Sent: 04 August 2015 15:20
> > To: arm-allstar at hamvoip.org
> > Subject: arm-allstar Digest, Vol 15, Issue 1
> > 
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> > 	arm-allstar at hamvoip.org
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> > 
> > Today's Topics:
> > 
> >    1. New RPI2 installation IAXRpt drops out. (B. McIntosh [Pace])
> >    2. Re: New RPI2 installation IAXRpt drops out. (Doug Crompton)
> > 
> > 
> > ----------------------------------------------------------------------
> > 
> > Message: 1
> > Date: Tue, 4 Aug 2015 11:25:01 +0100
> > From: "B. McIntosh [Pace]" <bmcintosh at paceprofessional.co.uk>
> > To: <arm-allstar at hamvoip.org>
> > Subject: [arm-allstar] New RPI2 installation IAXRpt drops out.
> > Message-ID: <5250FB5442694762BF01349EBFE541EE at HPBernie>
> > Content-Type: text/plain;	charset="us-ascii"
> > 
> > 
> > Hi,
> > 
> > I've been operating BBB for a while, but have a new remote 
> > base that I want to control with the RPI2 image.  Plan is to 
> > use iaxrpt dispatch software.
> > 
> > I have some success but its not working well.
> > 
> > Firstly, I reboot rpi2 then run iaxrpt on Win 7 PC. (same 
> > subnet) reports successful connection but there is no audio.  
> > Problem resolved by executing asterik -r, followed by reload.
> > 
> > Then all is well for a few minutes. Audio just stops, iaxrpt 
> > says that it is still connected. 
> > 
> > Iaxrpt reports "Linking delayed by inactivity" "Busy set call 
> > =0"  "Buy clear call = 0" and a few other similar  messages 
> > which I can reproduce if relevant (it doesn't seem to be esy 
> > to export the log, messages all have to be retyped by hand) . 
> > It isn't clear if there is any correlation between these 
> > iaxrpt messages and the problem.
> > 
> > Turning to the rPI2. 
> > 
> > When I do a reload of asterisk I get some messages that do 
> > not look right.
> > See further below.
> > 
> > When I check the /var/log/asterisk/messages file there are 
> > also some things not right. See below
> > 
> > I have done nothing but install as per Doug's scripts and 
> > have two specific
> > questions:
> > 
> > 1. Is there generally success with Iaxrpt and the RPI2 v1.0 image ?
> > 2. Any ideas on how to track down this problem ?
> > 
> > Tnx and 73
> > 
> > Bernie GM4WZG
> > 
> > Messages file
> > ______________________________________________________________
> > ______________
> > __
> 
> 
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