[App_rpt-users] Debugging COS
jaydublu2002 at gmail.com
Sun Feb 12 07:34:21 EST 2012
> Assuming COS is connected to the Volume Down pin on the CM108 then how
> plugging the fob into another PC which is not running the Asterisk drivers
> and see if the volume control is affected when COS is asserted?
> On my PC, if I press volume down, either on the keyboard or on an
> USB sound fob then a volume bar pops up in the centre of the screen. It's
> very visible.
> Naturally, there may be a 'correct' way to do this with some sort of
That's a good plan.
So I take an unmodified fob, that does have volume buttons on, and plug it
into a PC. 'volume down' button does indeed trigger the windows volume bar.
But this fob and button don't do anything on Asterisk.
My modified fob - taking pin 48 to gnd also triggers the volume down on
Windows, so that suggests it's not hardware?
On 12 February 2012 11:45, Jim Whiteside <jaydublu2002 at gmail.com> wrote:
> I'm still chipping away at modifying a Startech CM108 USB fob - so far I
> have successfully got PTT and audio out working, but I'm struggling with
> audio in and COS.
> I've been following http://www.qsl.net/k0kn/cm108_mod.html
> Can anyone advise if there's a way to determine from the Asterisk side if
> COS is active or not?
> I've even tried manually taking the CM108 pin 48 to 0v and +5v with the
> iax.conf below, but I can't seem to make anything 'happen'.
> My theory was, as soon as I have COS triggering Asterisk correctly, then I
> can look at getting the audio in working properly.
> Jim Whiteside.
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