Oh ye, most of the problems I have seen in VOIP are related to payload number, if that is what I think it is. Most of the people call it packetization peroid, or VoiceFramesPerPacket. I dont know why but most signalling applications fail here sometimes for some reason (including commercial signalling stacks). I usually fix it by lowering it if it is too high, or raising it if it is too low.
Regards On Fri, 22 Aug 2003, Peter Grace wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Anyone know how to make sense of this? I'm pretty dumb > when it comes to the rtp protocol. If someone can confirm > this is a bug, we can put it into bugs.digium.com... > > Pete > > - -----Original Message----- > From: Robin Raymond [mailto:[EMAIL PROTECTED] > Sent: Friday, August 22, 2003 6:48 PM > To: Peter Grace > Subject: RE: Payload numbers > > > > Hi Peter, > > Well, from what I understand by this user, Asterisk is not > examining the RTP payload number for speex or iLBC that > X-Lite is using. > > In the INVITE request, I tell Asterisk which codec payload > numbers I'm using, which is different that what Asterisk > sends back. Asterisk reports back it's payload numbers. I > send my RTP using your speex/iLBC payload numbers that you > expect from your SDP, and I expect RTP to come back with my > speex/iLBC payload numbers that I provided in my SDP. Now > I'm not 100% sure I'm doing that right, so perhaps I have a > bug. > > v=0 > o=21186 21339250 21339250 IN IP4 64.180.128.147 > s=X-PRO > c=IN IP4 64.180.128.147 > t=0 0 > m=audio 8000 RTP/AVP 0 8 3 98 97 101 > a=rtpmap:0 pcmu/8000 > a=rtpmap:8 pcma/8000 > a=rtpmap:3 gsm/8000 > a=rtpmap:98 iLBC/8000 <-- this is my mapping > a=rtpmap:97 speex/8000 <-- this is my mapping > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-15 > > As what I understand, calling w/ speex/iLBC simply doesn't > work between X-Lite and Asterisk. Not sure why. > > No I didn't receive the e-mail about the PPC. Feel free to > CC me on stuff like that :) > > Any ideas? > > - -Rob > > > -----BEGIN PGP SIGNATURE----- > Version: PGPfreeware 7.0.3 for non-commercial use <http://www.pgp.com> > > iQA/AwUBP0at7NW8rcEEsO4aEQLKpwCeOBIZ3pogL2JQ6EL9p50EBW/PYZ8An063 > ereE1and4UKs7/uFcF45iu0M > =r3uu > -----END PGP SIGNATURE----- > > _______________________________________________ > Asterisk-Dev mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-dev > _______________________________________________ Asterisk-Dev mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-dev
