[asterisk-users] DTMF Corruption Problem

[mail-lists]

Erick Perez wrote:
> I can report that with asterisk 1.2.13, internal SIP calls work
> perfectly but (in my particular case) my asterisk box cannot recognize
> DTMF digits when it receives a call via our SIP provider. we are both
> using rfc2833 and I have tried relaxdtmf=yes/no
>
> when i use an internal sip extension and call somebody outside via my
> sip provider, dtmf is recognized.
>
> On 11/9/06, mail-lists <mail-lists at peachnet.com> wrote:
>>
>> > Also, I am not using a zaptel timer.  Could this possibly be causing
>> > problems with DTMF??
>> I really don't know for certain but here's what I experienced: When
>> calling out asterisk gives the option to allow called numbers to
>> transfer by hitting the '#' by putting 'T' (or 't'?) as an option in th
>> dial string. This would very seldom work. I could hit the '#' on the
>> called phone it would say 'extension' but would always reply with 'not
>> valid extension'
>>
>> I recently upgraded to 1.2.12 and noticed that there was no ztdummy
>> running! I compiled my own zaptel installed it, loaded the modules on
>> boot and now the transfer works perfectly.
>>
>> Also: my moh wasn't working for some reason. After I installed the
>> ztdummy module it works too..
>>
>> I'm not sure whether the transfer issue was fixed by using the ztdummy
>> module or by the asterisk issue but my point is that you should always
>> have the ztdummy module installed if possible.
>>
>> Just my .02. Hope it helps
>>
>>
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>
>
Erick,

Do you have ztdummy running?
What SIP provider are you using. Incoming calls work fine for me (and 
always have as far as I know).