Re: Call fork
Paraskevopoulos Pavlos <[email protected]>
| Newsgroups | gmane.ietf.sip |
|---|---|
| Message-ID | <[email protected]> |
Consult the RFCs 3959 and 3960. What about muting the RTPs except the last one and as soon as a 200 OK is received you re-open the valid connection. Of course you will expect a media clipping. I think this is the simplest one. Pavlos Dean Willis wrote: > > On Sep 22, 2009, at 7:48 AM, <[email protected]> > <[email protected]> wrote: > >> Hi >> >> I have a scenario where Invite is forked by a proxy and it gets >> multiple 183 containing sdp and all are sending rtp packets as >> anouncements.What should the b2bua do? >> As we dint know which ua is going to send 200 ok >> > > Congratulations. You've discovered promiscuous early media. That's why > I think this part of the protocol spec is broken; early media (driven > by PSTN-interworking) combined with forking produces an intractable > problem. > > Various hacks have been used to address the problem. As far as I know, > none of them really work "right", but you might find one that works > most of the time for your use case. > > I suggest trying the sip-implementors mailing list for advice on this > issue: > > <[email protected]> > > Although personally, what I'd probably do is hunt down the developers > of the UAs that are all sending 183 with SDP and related RTP and > verbally abuse them. Of course, if the UAs are PSTN gateways, there > really isn't much else they can do. > > -- > Dean > _______________________________________________ > Sip mailing list https://www.ietf.org/mailman/listinfo/sip > This list is for NEW development of the core SIP Protocol > Use [email protected] for questions on current sip > Use [email protected] for new developments on the application of sip > -- *Paraskevopoulos Pavlos* Software Engineer Systems Software Development Research & Development ----------------------------------------------- * INTRACOM TELECOM S.A - SITRONICS* Email: [email protected] <mailto:[email protected]> TEL: +30 210 6674342, +30 210 6672267 FAX: +30 210 6671446 19,7 KM Markopoulou Ave Peania, Attika P.O 19002 Signature Eco-Tip: Printing emails is usually a waste. Please consider your environmental responsibility before printing this e-mail _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [email protected] for questions on current sip Use [email protected] for new developments on the application of sip