[App_rpt-users] Debugging COS

Jim Whiteside jaydublu2002 at gmail.com
Sun Feb 12 11:14:32 EST 2012


To answer a previous query - yes I'm pretty confident it's a CM108 - lsusb
reports "ID 0d8c:013c C-Media Electronics, Inc."

I did also wonder about the other ctcss settings but commenting them out
and reloading the config makes no difference.

My app_rpt is version 0.287 - as supplied with the AllStar ACID distro.

Jim M0HPJ

> I dont know if this has been fixed in more recent versions, but if you
> have the ctcss=no then you must comment out these arguments in the
> usbradio.conf:

> ;txctcssdefault=94.8
> ;rxctcssfreqs=94.8
> ;txctcssfreqs=94.8

> If you don't then App-Rpt is still looking for a valid ctcss tone and
> cor to activate.

> Jon VA3RQ



On 12 February 2012 12:34, Jim Whiteside <jaydublu2002 at gmail.com> wrote:

> > 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 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.
>>
>> 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.
>



-- 
Jim Whiteside.
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