Hi, just a hint: If you use rtpoffer/answer for SDP in 200ojk/ACK, the SDP-Offer is in the 200 OK, so you need to call "rtp_offer" for the 200 OK instead of the usual "rtp_answer" for the 200 OK. The ACK/SDP contains then the rtp_answer. Works like a charm for me....
Carsten 2011/2/10 Emil Kroymann <emil.kroym...@isaco.de>: > When I checked the code of the nathelper module that we are using, > it didn't seem to be the case, that to and from tags are switched > for the ACK request. Maybe, something has been changed after the > point we checked out sip-router. When was this code last changed? > > Am Wed, 9 Feb 2011 12:51:29 -0500 > schrieb Ovidiu Sas <o...@voipembedded.com>: > >> The code seems to be correct. The to and from tags are switched for: >> - reply with offer (200ok with first SDP) >> - request with answer (ACK with second SDP) >> >> Are you sure that you are properly invoking offer/answer rtpproxy >> functions? >> >> >> Regards, >> Ovidiu Sas >> >> On Wed, Feb 9, 2011 at 11:48 AM, Emil Kroymann >> <emil.kroym...@isaco.de> wrote: >> > Hi, >> > >> > We recently had a problem with the nathelper module and rtpproxy in >> > a scenario where the SDP offer is sent only in the 200 OK. We use >> > sip-router 3.1 and rtp-proxy from git master. The sip-router >> > configuration uses the rtpproxy_offer() and rtpproxy_answer() >> > functions in appropriate places. The problem is, that the arguments >> > sent to the rtpproxy, when the ACK with the sdp answer arrives, >> > seems to be not in the order, that rtpproxy expects. >> > >> > On the 200 OK, the nathelper module sends callid, to-tag, from-tag >> > to rtpproxy. On the ACK, the nathelper module sends callid, >> > from-tag, to-tag (with different command prefixes, of course, but I >> > cannot remember them atm). The version of rtpproxy that we are >> > using seems to expect, that the order of arguments sent on the ACK >> > request is the same as on the 200 OK. >> > >> > My question: are there any module parameters, to correct this >> > behaviour? >> > >> > Regards, >> > >> > Emil >> > -- >> > Emil Kroymann >> > VoIP Services Engineer >> > >> > Email: emil.kroym...@isaco.de >> > Tel: +49-30-203899885 >> > >> > ISACO GmbH >> > Kurfürstenstraße 79 >> > 10787 Berlin >> > Germany >> > >> > Amtsgericht Charlottenburg, HRB 112464B >> > Geschäftsführer: Daniel Frommherz >> > >> > >> > _______________________________________________ >> > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing >> > list sr-users@lists.sip-router.org >> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> > >> > >> > > > > -- > Emil Kroymann > VoIP Services Engineer > > Email: emil.kroym...@isaco.de > Tel: +49-30-203899885 > Mobile: +49-176-38389303 > > ISACO GmbH > Kurfürstenstraße 79 > 10787 Berlin > Germany > > Amtsgericht Charlottenburg, HRB 112464B > Geschäftsführer: Daniel Frommherz > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > -- Carsten Bock Schomburgstr. 80 22767 Hamburg Germany Mobile +49 179 2021244 Home +49 40 34927217 Büro (Verl) +49 5246 801427 Fax +49 40 34927218 mailto:cars...@bock.info _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
