On 04/10/14 09:26, Olli Heiskanen wrote: > > Hello, > > After some tests, I'm still having some strange results. > > When calling from ws client to grandstream, I get the below output to > /var/log/messages. > In a sip trace after 488 there are only INVITEs from kamailio server to > grandstream but no responses come back to kamailio server. > > I haven't changed any other configurations, kamailio or otherwise. I run > the rtpengine like this: > /usr/sbin/rtpengine --table=0 --ip=1.1.1.1 --listen-udp=127.0.0.1:7722 > <http://127.0.0.1:7722> --listen-ng=127.0.0.1:7723 > <http://127.0.0.1:7723> --tos=184 --pidfile=/var/run/rtpengine.pid > (where 1.1.1.1 is my kamailio server ip) > > How do I work out the problem from here? Please let me know if you need > any further info or logs and I'll dig those out. >
Unfortunately the log lines are cut off and don't include the entire command packet to rtpengine, but my guess is that you omitted the ICE handling parameter, which (as of a few days ago) forces rtpengine into passthrough mode, which means that most of the RTP/SAVPF attributes are left in place. My guess is that this confuses the grandstream. You should use either ICE=force or ICE=remove (formerly "+" or "-" flags) to make sure rtpengine is actually able to bridge between the protocols. You should also add the "rtcp-mux-demux" flag (through rtpengine module) in case the grandstream gets confused by rtcp-mux being offered. With those two in place, the resulting RTP/AVP SDP should be very small and clean. cheers
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