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)
>
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