>
Assuming COS is connected to the Volume Down pin on the
CM108 then how about
> 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 unmodified
> 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 built-in
> diagnostics...
> 73,
> Andrew
> ZL3AME
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?
Jim M0HPJ
On 12 February 2012 11:45, Jim
Whiteside <jaydublu2002@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.
TIA
--
Jim Whiteside.
M0HPJ
[usb28233]
hdwtype=0
rxboost=1
txboost=0
rxctcssrelax=1
txctcssdefault=94.8
rxctcssfreqs=94.8
txctcssfreqs=94.8
;rxctcssoverride=0
carrierfrom=usbinvert
ctcssfrom=no
rxdemod=speaker
txprelim=no
txlimonly=no
txtoctype=notone
txmixa=composite
txmixb=no
invertptt=0
duplex=0
rxondelay=0
rxnoisefiltype=0
eeprom=0
--
Jim Whiteside.