Hi again I think that I found the source of the SSRC, it is in the tool which generates the RTP file, the comment was in the source!!!
./wav2rtp-0.9.3/src/pcap_filter.c: rtp_header->ssrc = 0x12011A0C; /* XXX: This should be random */ But the RTP loopback, apparently does not change the SSRC. At least, now I can test if this is whats causing Wireshark to fail. Med venlig hilsen / Best regards Kjeld Flarup (Christensen) M.Sc E.E, Teknisk chef Viptel ApS, Benslehøjvej 3, DK-7470 Karup J Telefon: +45 46949949, Telefax: +45 46949950, http://viptel.dk On 2015-12-15 16:49, sindelka wrote: > What is the source of the RTP in your scenario? The rtp_stream command > in both the UAC and UAS scenarios? Or do you use the automatic RTP > loopback at one end? Can you use pcap_play instead and use some > pre-recorded RTP captures? > > What exactly is your problem with Wireshark's understanding the RTP > flows? Maybe you could consider posting a question with an example > capture to ask.wireshark.org, because it is not clear whether the common > ssrc in both directions is really what confuses Wireshark. > > Pavel > > Dne 15.12.2015 v 15:42 Kjeld Flarup napsal(a): >> Hi >> >> I'm trying to test a network by sending calls directly between two SIPp >> instances. >> However when I try to analyze the stream with wireshark it cannot >> understand the RTP >> >> I have a suspicion that the problem lies in the SSRC value which is the >> same in both directions. >> 10 2015-12-15 15:35:02.090403 194.247.61.193 194.247.61.197 >> RTP 214 PT=ITU-T G.711 PCMA, SSRC=0xC1A0112, Seq=0, Time=0, Mark >> 11 2015-12-15 15:35:02.094980 194.247.61.197 194.247.61.193 >> RTP 214 PT=ITU-T G.711 PCMA, SSRC=0xC1A0112, Seq=0, Time=0, Mark >> >> Is there a way to change this value. >> Or does somebody know another solution to this problem. >> > > ------------------------------------------------------------------------------ > _______________________________________________ > Sipp-users mailing list > Sipp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sipp-users ------------------------------------------------------------------------------ _______________________________________________ Sipp-users mailing list Sipp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sipp-users
