[SIPForum-discussion] dtmf issue on the sip trunk !!

[Munjal Patel]

Looks like CODEC negotiated was G711 and g711 uses in band DTMF should not have to worry about the DTMF 

Sent from my iPhone

On Jun 13, 2012, at 12:47 AM, "virajith " <vir356 at rediffmail.com> wrote:

> 
> Hello Team,
> 
> I have an issue where dtmf is not getting negotiated . We are doing a delayed offer to pbx but the pbx ..
> 
> What the dtmf methods advertised in this  200 ok sdp sent by the pbx ?
> 
> v=0
> o=IPC 425146 425146 IN IP4 XXXXX
> s=IPC
> c=IN IP4 10.97.232.239
> t=0 0
> m=audio 16442 RTP/AVP 0 8 18 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:18 G729/8000
> a=fmtp:18 annexb=yes
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15,77,84
> a=ptime:20
> a=sendrecv
> 
> 
> in the ACK that we(our end) send is this...
> 
> 
> v=0
> o=CiscoSystemsCCM-SIP 2000 1 IN IP4 10.97.202.101
> s=SIP Call
> c=IN IP4 10.97.202.124
> t=0 0
> m=audio 19504 RTP/AVP 0 101
> a=rtpmap:0 PCMU/8000
> a=ptime:20
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> 
> 
> What the dtmf  methods advertised and negotiated?
> 
> 
> Thanks,
> Vir
> 
> 
> 
> 
> 
> 
> 
> Follow Rediff Deal ho jaye! to get exciting offers in your city everyday.
> <logs.rtf>
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