Hello Sergiu, Thanks for your suggestions. Regarding option b) to put SAVP and AVP, it is not possible with rtpengine at the moment (see https://github.com/sipwise/rtpengine/issues/435 <https://github.com/sipwise/rtpengine/issues/435>). Also using OSRTP does not work with Zoiper. The only idea to make it compatible which I have is to add an SRTP/RTP option to the server-side subscriber configuration. Depending on this setting I can put either RTP/SAVP or RTP/AVP in the INVITE. The drawback ist that it only works when server and client configuration is matching.
Thanks and regards Markus > Am 19.04.2021 um 14:35 schrieb Sergiu Pojoga <pojo...@gmail.com>: > > Hi Marcus, > > Can't say for Zoiper, but I've worked this case with Counterpath (sadly for > Canada - it is no more, has been acquired by Alianza). > > Anyhow, the final conclusion at the time was: The client is correct to expect > that this is the same INVITE request that took different paths to the target > (as indicated by the different branch IDs) - and thus correct to reject it > with a 482 because the requests are not identical in content. > https://tools.ietf.org/html/rfc3261#section-8.2.2.2 > <https://tools.ietf.org/html/rfc3261#section-8.2.2.2> states what should > occur if there is no To tag > > The suggested solutions were: > a) increment CSeq - impossible to do with a proxy > b) send both SAVP and AVP lines in the SDP of the original INVITE. If media > encryption is set to mandatory and SIP TLS is enabled then the SAVP offer > would be accepted. If media encryption is off in Bria, then the AVP offer > would be accepted > > Good luck. > > On Mon, Apr 19, 2021 at 3:55 AM Markus Bönke <m...@tenios.de > <mailto:m...@tenios.de>> wrote: > Hello NG, > > I saw the following threads discussing how to switch to RTP when a client > does not support SRTP. > > https://lists.kamailio.org/pipermail/sr-users/2018-May/101341.html > <https://lists.kamailio.org/pipermail/sr-users/2018-May/101341.html> > https://lists.kamailio.org/pipermail/sr-users/2016-September/094457.html > <https://lists.kamailio.org/pipermail/sr-users/2016-September/094457.html> > > There are some issues with Zoiper and Bria which also persist in the latest > versions. Has anyone got it work with Zoiper and Bria? > > Thanks and regards > > Markus > > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users> > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users@lists.kamailio.org > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
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