The latter SDP seems invalid. It has an entirely different o= line from the previous SDP. Here is a quote from section 8 of RFC 3264 that describes this rule:
When issuing an offer that modifies the session, the "o=" line of the new SDP MUST be identical to that in the previous SDP, except that the version in the origin field MUST increment by one from the previous SDP. -- Raj Jain On Fri, Jun 6, 2008 at 9:57 AM, Edgar Barbosa <[EMAIL PROTECTED]> wrote: > Hi, > > I'm having a problem dialing out to a particular customer via a SIP > provider. > When this customer puts the call on hold on his pbx, our asterisk > receives an INVITE with a SDP like this, and also puts the call on hold: > > v=0 > o=ZTE 415 1 IN IP4 xxx.xxx.xxx.xxx > s=phone-call > c=IN IP4 xxx.xxx.xxx.xxx > t=0 0 > m=audio 15030 RTP/AVP 8 101 > a=sendonly > > We also see on cli an "Started music on hold, class 'default', on > channel 'Local/[EMAIL PROTECTED],1'" message. > > > Then, when he releases the hold, we get a new INVITE with a SDP like > this, but we can't get his audio any more: > > v=0 > o=root 2842 2843 IN IP4 xxx.xxx.xxx.xxx > s=session > c=IN IP4 xxx.xxx.xxx.xxx > t=0 0 > m=audio 18240 RTP/AVP 8 101 > a=rtpmap:8 PCMA/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-16 > a=silenceSupp:off - - - - > a=ptime:20 > a=recvonly > > > Is there any way of blocking this kind of notifications? > We really don't need to get this external "on hold" messages. > > I've tried setting "allowexternalinvites=no" on sip.conf, but there's no > difference... > > Thanks, > Edgar > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users