Improper proxying/rewrite of SDP for video calls

jesup · 02-11-2008, 10:58 PM

When trying video calls from FWD to SIPPhone via SIPBroker, I find that the SDP is rewritten to use a media proxy somewhere along the way.

This would be fine, except that it only rewrites the port for the first m= line in the SDP. The result is that audio gets through ok, but video goes into a black hole on the media relay.

I don't know if this is caused by SIPBroker, or the interface to SIPBroker by one of the two entities listed. My suspicion is that it's FWD's interface to SIPBroker, but that's merely a guess.

Anyone (from SIPBroker?) know what's going on with multiple media streams?

02-11-2008, 10:58 PM	#1
jesup Junior Member Join Date: Feb 2008 Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	Improper proxying/rewrite of SDP for video calls When trying video calls from FWD to SIPPhone via SIPBroker, I find that the SDP is rewritten to use a media proxy somewhere along the way. This would be fine, except that it only rewrites the port for the first m= line in the SDP. The result is that audio gets through ok, but video goes into a black hole on the media relay. I don't know if this is caused by SIPBroker, or the interface to SIPBroker by one of the two entities listed. My suspicion is that it's FWD's interface to SIPBroker, but that's merely a guess. Anyone (from SIPBroker?) know what's going on with multiple media streams?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Free DID Numbers, Free Voip Calls, & more Voip Info	amroe	Voxalot General	54	01-13-2014 09:11 AM
incoming sip calls going directly to voicemail	vishal3110	Voxalot Support	8	12-13-2008 12:17 AM
Some incoming SIP URI dialed calls slient	Tylo	Voxalot Support	9	04-09-2008 05:24 PM
VoIP situation in Japan - how to improve with ENUM and peering.	v164	Voxalot General	2	02-02-2008 03:05 PM
Newbie - but please be nice	Mallycat	Voxalot Support	21	04-15-2006 07:50 AM