Hi Carsten,
I tried to apply the patch 8c10653865e5f0b446f8783a30b67b062f897dcb which seems
to be the important one and then I tried to allow sending non-audio media
directly between both ends if RTP relay is active.
Unfortunatelly, I tried it just with simulators - I wasn't able to get two
working video capable SIP clients (none fax capable SIP client around) on my HW
to check between them. So, please, if you would have time for that, can you try
the fax with RTP relay enabled? It should just go directly but better than
nothing I guess.
thanks
Vaclav
On Thu, Jun 21, 2012 at 05:15:49PM +0200, Carsten Bock wrote:
> Hi,
>
> thanks. Right now, it results in the following:
>
> m=<unknown media type> 0 <unknown media type> 0.
>
> without RTP-Relay or Transcoding, just sanitation. This is totally
> useless and thus gets declined by the other endpoint:
>
> SIP/2.0 400 Bad Session Description.
>
> Thanks again,
> Carsten
>
> 2012/6/21 Vaclav Kubart <[email protected]>:
> > Hello Carsten,
> > I will look on it tomorrow but if I remember correctly it is not possible to
> > relay/transcode non-audio streams right now, so applying the patch is not
> > enough if you would like to relay such media through SEMS.
> >
> > Vaclav
> >
> > On Thu, Jun 21, 2012 at 02:23:25PM +0200, Carsten Bock wrote:
> >> Hi,
> >>
> >> i am using GIT-Trunk-Version (latest). And that version does not
> >> contain the fix, e.g.:
> >>
> >> http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sems;a=blob;f=core/AmSdp.cpp;h=7165242af2e4cad010ac4f47fa82f9523c65bd57;hb=HEAD
> >>
> >> Can someone from the SEMS-Team apply the patch to GIT Trunk?
> >>
> >> Thanks for pointing that out,
> >> Carsten
> >>
> >> 2012/6/21 Andrew Pogrebennyk <[email protected]>:
> >> > Hello Carsten,
> >> >
> >> > We had this problem some time ago. What version you are running? The
> >> > fixes have been backported to 1.4 branch in April. These two commits
> >> > should give you the expected behavior:
> >> >
> >> > http://git.sip-router.org/cgi-bin/gitweb.cgi/sems/?a=commit;h=ddb20bd27800c9a9badb02bf0ee44461f7db827b
> >> > http://git.sip-router.org/cgi-bin/gitweb.cgi/sems/?a=commit;h=8c10653865e5f0b446f8783a30b67b062f897dcb
> >> >
> >> > HTH.
> >> > Andrew
> >> >
> >> > On 06/21/2012 01:30 PM, Carsten Bock wrote:
> >> >> Hi,
> >> >>
> >> >> i am using the SDP-Filter of the SBC-Module with following settings:
> >> >> sdp_filter=whitelist
> >> >> sdpfilter_list=g722,pcma,pcmu,telephone-event
> >> >> sdp_anonymize=yes
> >> >> # Filter A-Lines:
> >> >> sdp_alines_filter=blacklist
> >> >> sdp_alinesfilter_list=crypto,nortpproxy
> >> >>
> >> >> Everything works fine, except T.38:
> >> >> In the SDP of the Re-INVITE, i have "m=image 17960 udptl t38", which
> >> >> cannot be parsed by SEMS:
> >> >>
> >> >> Jun 21 12:31:13 sbc-1 sems[5480]: [#7fe8458e3700] [parse_sdp_media,
> >> >> AmSdp.cpp:722] ERROR: parse_sdp_media: Unknown media type
> >> >>
> >> >> As a result of:
> >> >> /*
> >> >> *Check if known media type is used
> >> >> */
> >> >> static int media_type(std::string media)
> >> >> {
> >> >> if(media == "audio")
> >> >> return 1;
> >> >> else if(media == "video")
> >> >> return 2;
> >> >> else if(media == "application")
> >> >> return 3;
> >> >> else if(media == "text")
> >> >> return 4;
> >> >> else if(media == "message")
> >> >> return 5;
> >> >> else
> >> >> return -1;
> >> >> }
> >> >> (with no media==image)
> >> >>
> >> >> For now, i've simply disabled SDP Sanitation and T.38 goes through.
> >> >> I think, actually "m=image" should be handled by SDP-Parser properly;
> >> >> especially since it might break other RTP-related features of the SBC,
> >> >> such as Transcoding or RTP-Relay.
> >> >>
> >> >> Kind regards,
> >> >> Carsten
> >> >
> >>
> >>
> >>
> >> --
> >> Carsten Bock
> >> CEO (Geschäftsführer)
> >>
> >> ng-voice GmbH
> >> Schomburgstr. 80
> >> D-22767 Hamburg / Germany
> >>
> >> http://www.ng-voice.com
> >> mailto:[email protected]
> >>
> >> Office +49 40 34927219
> >> Fax +49 40 34927220
> >>
> >> Sitz der Gesellschaft: Hamburg
> >> Registergericht: Amtsgericht Hamburg, HRB 120189
> >> Geschäftsführer: Carsten Bock
> >> Ust-ID: DE279344284
> >>
> >> Hier finden Sie unsere handelsrechtlichen Pflichtangaben:
> >> http://www.ng-voice.com/imprint/
> >> _______________________________________________
> >> Semsdev mailing list
> >> [email protected]
> >> http://lists.iptel.org/mailman/listinfo/semsdev
>
>
>
> --
> Carsten Bock
> CEO (Geschäftsführer)
>
> ng-voice GmbH
> Schomburgstr. 80
> D-22767 Hamburg / Germany
>
> http://www.ng-voice.com
> mailto:[email protected]
>
> Office +49 40 34927219
> Fax +49 40 34927220
>
> Sitz der Gesellschaft: Hamburg
> Registergericht: Amtsgericht Hamburg, HRB 120189
> Geschäftsführer: Carsten Bock
> Ust-ID: DE279344284
>
> Hier finden Sie unsere handelsrechtlichen Pflichtangaben:
> http://www.ng-voice.com/imprint/
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