[asterisk-users] U-verse DTMF tuning for Zaptel

[Steve Edwards]

>> On Mon, 24 Jan 2011, David Backeberg wrote:
>> 
>>> Can you record a few calls just to confirm the problem?

On Mon, 24 Jan 2011, Steve Edwards wrote:

> If I record via mixmonitor(), I just get a bunch of clicks where the DTMF 
> should be. I'm assuming this is because the DSP has already taken the DTMF 
> out of the audio stream.
>
> If I record via 'sudo ztmonitor 89 -R rx -T tx' and then convert to wav with 
> '/usr/bin/sox -r 8000 -s -w -c 1 -t raw tx tx.wav' all I get is a steady 
> 'high pitched tone' which Audacity says has peaks at 16hz, 1khz, 2khz, 3khz 
> and 4khz.

ztmonitor -vv shows rx values peaking around 6000 and tx values peaking 
around 7000. Isn't that rather 'hot?'

-- 
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                              Fax: +1-760-731-3000