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]
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Fax +49 40 34927220
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Geschäftsführer: Carsten Bock
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