[arm-allstar] New RPI2 installation IAXRpt drops out.

[Bernie McIntosh]

Hi,

First of all apologies for sending out earlier mails under the 
silly "digest" subject header. I don't use lists very often and 
this slipped by.

Secondly, thanks very much for the rapid help and support.

I don't want to move to using COS for two reasons. One is that 
I have already purchased four soundcards that were from 
different origins and all use the dreaded blob construction. 
Looks like virtually all do these days.  The vendor of the ones 
you have listed will not ship to the uk.  The other reason is 
that the radio, which is part of the team's set, does not have 
COS available.

We can always just up the budget and get something suitable but 
here in the UK, mountain rescue is unpaid voluntary work and 
the budget is accordingly tight. Another alternative is some 
point to point audio streaming and a simple GPIO remote 
operating program over ssh. In one sense using asterisk for my  
problem is a bit of a sledgehammer to crack a nut. But iaxrpt 
looks really good and easy to use as a dispatch console and 
that's what drives me to use the full-blown apt-rpt solution.

So cogniscent of your advice - the receiver must present COS 
even for a half-duplex remote access system, I thought I'd try 
the usbradio solution  and dsp COS. I was actually expecting it 
to be poor after all that I've read, but in fact it seems to 
work a treat. I've only done some basic bench testing so it is 
early days, but the quality does seem good enough.

Again, because of the soundcard procurement problem, for the 
PTT I've used the PI gpio and the channel variable/event 
handler solution outlined a few times by others on the list. It 
was a little tricky initially, with timing issues causing a 
lock up. Remember I'm just operating a transceiver, not a 
separate rx / tx combination and since I am using squelch COS 
detection, when I go into TX from iaxrpt, the system thinks 
that the receive channel is occupied and tries to perpuate the 
TX forever.

Anyway, all resolved now and the system working perfectly the 
way I wanted it. Doug, you sure have saved a lot of work with 
your image and your support. I'm most grateful.


Very 73

Bernie
GM4WZG