[Asterisk-Users] DTMF problems with Zaptel T100P

[Martin Pycko]

Try to add this line to zapata.conf

relaxdtmf=yes

before the "channel => " definition

Martin

On Wed, 28 May 2003, Nick Eggleston wrote:

> We've got an asterisk system hooked up to a number of telephones via a channel
> bank.
>
> [*]T100P---CAC(access bank)---Phones...
>
> What we are seeing is problems with DTMF tone detection on some (but not all) of
> the FXS ports.  In our testing, we plugged a simple analog phone into each of
> the first 10 ports, called outside the syatem, and listed while the user
> depressed the "5" key for four seconds.
>
> What we expect to hear on the remote-end is four seconds of DTMF tone.  That is
> what the local user hears.
>
> On some of the ports we do indeed hear four seconds of continuous DTMF.
> On one port, we only hear about 1/2 second of DTMF followed by 3.5 seconds of
> silence.
> On anohter port, we hear about 3.5 seconds of silence, followed by 0.5 seconds
> of DTMF.
> On another port, we hear 4 seconds of DTMF interrupted by blips of silence.
>
> When not playing DTMF tones, we can hear just fine.
>
> Has anyone else had these symptoms?
>
> Can anyone suggest a way to debug this?
>
> Thanks!
> --
> Nick Eggleston
> Consultant
> Data Communications Consulting, Inc.
> 6320 Rucker Road, Suite E
> Indianapolis, IN  46220
> 317/726-0295 x18
> 317/202-2445 (fax)
>
>
>
>
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