I don't think it's valid because it's not something the phone can agree to. don't take my word for it though. Who is the provider?
I don't see how the phone can agree unless it says, yeah I can do u-law. On Thursday, July 29, 2010, Matt White <[email protected]> wrote: > > > > > > > Struggling with a sip trunk provider where polycom cancels after the > 183 message. The only thing different I see between this and other providers > is the SDP feilds. > > > This provider sends the codec in the media description but I do not see > a corresponding Media attribute for the codec. Is that valid? For example, > the sdp looks this: > > > v=0 > > o=PITPACT-SBC-01 513746131 513746131 IN IP4 67.158.102.9 > > s=sip call > > c=IN IP4 67.158.102.250 > > t=0 0 > > m=audio 31788 RTP/AVP 0 101 > > a=rtpmap:101 telephone-event/8000 > > a=ptime:20 > > > > As all other vendors send me somthing like this: > > > v=0 > > o=root 13348 13348 IN IP4 64.2.142.18 > > s=session > > c=IN IP4 64.2.142.18 > > t=0 0 > > m=audio 10188 RTP/AVP 0 101 > > a=rtpmap:0 PCMU/8000 > > a=rtpmap:101 telephone-event/8000 > > a=fmtp:101 0-16 > > a=silenceSupp:off - - - - > > a=ptime:20 > > a=sendrecv > > > > See how the "good" provider sends me the media description with it set > to G711 but also as an attribute? > > > Its the only thing I can see why the polycom is canceling the call. > And if this is the case, is this a valid response. > > > Thanks, > > Matt > > > > > -- ====================== Tony Graziano, Manager Telephone: 434.984.8430 sip: [email protected] Fax: 434.984.8431 Email: [email protected] LAN/Telephony/Security and Control Systems Helpdesk: Telephone: 434.984.8426 sip: [email protected] Fax: 434.984.8427 Helpdesk Contract Customers: http://www.myitdepartment.net/gethelp/ Why do mathematicians always confuse Halloween and Christmas? Because 31 Oct = 25 Dec. _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users/
