you're proposing a third party call control scenario (3PCC). See RFC 3725 (http://tools.ietf.org/html/rfc3725) if you haven't already. You can do that with PJSIP/PJMEDIA. You just need to put the IP:port for the RTP stream for device X into the SDPs sent by your main SIP device to the client. Check out the invite session abstraction (pjsip_inv_session). It's used in the siprtp.c sample and in the simpleua.c sample. You'll be using PJSIP at a much lower level than the API to write a simple client, but you'll have much more control over the messages and full access to get and set SDPs. It's also much more efficient than the higher level API. good luck. It's quite simple really once you get into it... On Thu, May 10, 2012 at 11:48 AM, Pukitis Martins (LQLA CPE ST VD) <Martins.Pukitis at lantiq.com> wrote: > Thanks. > Actually it is more complicated than this. There is another device (let's say device X) on the local network, capable of sending and receiving RTP data. I need to tell (using SIP) the remote peer that the other party is this device X and not the device where pjsip is running, so that the device where pjsip is running doesn't get involved in any RTP data transmission. Can it be done with pjsip? > > -----Original Message----- > From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Joel Dodson > Sent: Thursday, May 10, 2012 8:09 PM > To: pjsip list > Subject: Re: direct RTP > > check out pjsip-apps/src/samples/siprtp.c. ?That shows you how to use the rtp sessions directly. > > On Thu, May 10, 2012 at 4:08 AM, Pukitis Martins (LQLA CPE ST VD) <Martins.Pukitis at lantiq.com> wrote: >> Hi. >> >> Is it possible to send/receive RTP packets directly on a socket, >> without streaming them through pjsip (not call rec_cb/play_cb)? >> >> >> _______________________________________________ >> Visit our blog: http://blog.pjsip.org >> >> pjsip mailing list >> pjsip at lists.pjsip.org >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >> > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
