[asterisk-users] Asterisk and Cisco DTMF

[David Backeberg]

On Mon, Mar 1, 2010 at 9:40 AM, David Backeberg <dbackeberg at gmail.com> wrote:
> On Mon, Mar 1, 2010 at 9:25 AM, Szasz Szabolcs <szasz.szabolcs at gmail.com> wrote:
>> Hi,
>>
>> I have encountered a DTMF issue. My scenario:
>>
>> Access carrier-----sip---->
>> Asterisk-1.4.25.1-----sip---->CiscoGW-----ISDN----->TDM Switch
>>
>> the access carrier sends to Asterisk out of band (rfc2833) dtmf, Asterisk
>> forwards it with SIP INFO method to Cisco gateway, but on TDM switch every
>> digit is duplicated. Is it possible that the carrier sends inband along with
>> rfc2833?
> Can you take asterisk out of the loop, terminate sip carrier straight
> into Cisco for testing?

You could also make a really simple dialplan object to do some DTMF
directly with a channel on the asterisk, to see if things work
properly going just that far.