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

[Aniella Juverdeanu]

Allow header just lets know the remote party that INFO is supported as a method but if the two SIP end points do not support out of band DTMF tones in INFO message, then should use in-band  as RFC 2833 RTP packets.

From: Phillip Lewis [mailto:phillipl at joinvip.com]
Sent: June 18, 2012 6:40 PM
To: Aniella Juverdeanu
Cc: virajith; discussion
Subject: Re: [SIPForum-discussion] dtmf issue on the sip trunk !!

What about the Allow field in the SIP Header. INFO may have been included, could SIP INFO have been resolved.?
On Mon, Jun 18, 2012 at 11:45 AM, Aniella Juverdeanu <Aniella.Juverdeanu at telus.com<mailto:Aniella.Juverdeanu at telus.com>> wrote:
Hi,

To me it looks negotiated ok with CODEC G711and RFC 2833/4733 for DTMF events 0-15.
I didn't see until now 77 and 84 used but if not accepted by the other end it means not supported - but the call should continue with standard events 0-15.

More details you may find in RFC 2833/4733.

Aniella

From: discussion-bounces at sipforum.org<mailto:discussion-bounces at sipforum.org> [mailto:discussion-bounces at sipforum.org<mailto:discussion-bounces at sipforum.org>] On Behalf Of virajith
Sent: June 12, 2012 9:47 PM
To: discussion
Subject: [SIPForum-discussion] dtmf issue on the sip trunk !!


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





[cid:image001.jpg at 01CD4F90.9C9FB690]<http://sigads.rediff.com/RealMedia/ads/click_nx.ads/www.rediffmail.com/signatureline.htm@Middle?>
Follow Rediff Deal ho jaye!<http://track.rediff.com/click?url=___http://dealhojaye.rediff.com?sc_cid=rediffmailsignature___&cmp=signature&lnk=rediffmailsignature&newservice=deals> to get exciting offers in your city everyday.



_______________________________________________
This is the SIP Forum discussion mailing list
TO UNSUBSCRIBE, or edit your delivery options, please visit http://sipforum.org/mailman/listinfo/discussion
Post to the list at discussion at sipforum.org<mailto:discussion at sipforum.org>



--
Phillip Lewis
Senior Manager, Engineering
VIP Communications Inc
Office | 703-708-1515 Ext 213
Fax | 703-708-1518
Email | phillipl at joinvip.com<mailto:phillipl at joinvip.com>
Website | www.joinvip.com<http://www.joinvip.com/>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20120621/66500a4b/attachment-0002.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 823 bytes
Desc: image001.jpg
URL: <http://sipforum.org/pipermail/discussion/attachments/20120621/66500a4b/attachment-0002.jpg>