[Asterisk-Users] DTMF not sending properly via IAX

[Eric Wieling aka ManxPower]

Perhaps we need to go over this again.

IAX2 CANNOT DO INBAND DTMF.  IAX2 DOES NOT USE RTP.  IAX2 DOES NOT DO 
RFC2833.

Carlos Alperin wrote:
> Before to anything else, are you sending DTMF in-ound or out-bound?
> 
> Most of the time when DTMF is not sent is because is in-bound. Just choose
> out-bound or RFC2833 (I don't remember if this is the right standard).
> 
> Carlos
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Tony
> Mountifield
> Sent: Monday, July 11, 2005 4:07 PM
> To: asterisk-users at lists.digium.com
> Subject: [Asterisk-Users] DTMF not sending properly via IAX
> 
> I'm not sure if this is a -users or a -dev question, since the answer
> probably comes down to something in the code.
> 
> I'm running the latest CVS-STABLE, and am subscribed to PSTN service
> using IAX2 via Voiptalk in the UK.
> 
> I've just been alerted by a customer that the sending of DTMF from my
> asterisk box to a remote PSTN user doesn't work, although it used to.
> 
> To test it, I have the following dialplan entries, that I can dial into:
> 
> exten => s,1,Answer
> exten => s,2,Wait(2)
> exten => s,3,SendDTMF(1234567890)
> exten => s,4,Wait(2)
> exten => s,5,Hangup
> 
> What happens is that whatever string I give to SendDTMF, I only hear the
> first DTMF digit. The remaining digits don't get sent.
> 
> I recently updated from an April CVS-STABLE to the July 4 version, but I
> couldn't see any relevant differences in the code. As its a production
> system, I can't just revert to test without planning.
> 
> I don't know whether Voiptalk have changed anything.
> 
> Is this a known bug in certain versions of Asterisk?
> 
> If I do iax2 debug, I *can* see DTMF frames being sent and acked for
> each digit. Wo I can't understand why I'm not hearing all the digits.
> 
> Any ideas?
> 
> Cheers
> Tony


-- 
Eric Wieling * BTEL Consulting * 504-210-3699 x2120