[arm-allstar] Setting levels for proper DTMF decoding

[David McGough]

Mike,

Is your problem that AllStar isn't decoding in-bound DTMF or that the 
RC-210 isn't decoding DTMF from AllStar?

The audio levels in/out of AllStar should be consistent across different 
systems, assuming you've got the same style audio Fobs everywhere.

Make sure you've got preemphasis (for out-bound audio) or deemphasis (for 
in-bound) enabled in AllStar, if needed, or tone-twist will occur, making 
DTMF decode more challenging....Again, these setting all behave similarly 
if you're using the same Fobs everywhere.

73, David KB4FXC


On Tue, 24 Sep 2019, "Mike Sullivan via ARM-allstar" wrote:

> Is there a proper way to set up output levels to an interface to ensure
> DTMF is decoding properly? I have two similar setups at two club's tower
> sites, both using RC-210 hardware controllers. The node at our club's site
> decodes DTMF fine, but the other club's site does not decode DTMF well
> (both using DTMF regen in the controller) even though we've gone in and
> properly set up audio levels on both controllers. Just wondering if there's
> a secret trick somehow to make sure it is working properly.
> 
> Mike
> _______________________________________________
> 
> ARM-allstar mailing list
> ARM-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> 
> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>