[Freeswitch-users] FS bypass ZRTP with TURN relay

adahary adahary at gmail.com
Tue May 28 12:39:01 MSD 2013


I've setup the FS with bypass_media mode to let endpoints to pass media
through a TURN server.
The dialplan is set dynamically to bypass_mode=true.
The endpoints can now register SIP with FS and then pass media between
thenself via the TURN relay (FS not in between) with no one-way-audio issue. 

The problem is when I setup FS and the endpoints with ZRTP.
Even though all RTPs are passing directly between endpoints and FS log
indications show that ZRTP is activated on both endpoints (including
a=zrtp-hash: in both SDPs) and still the ZRTP is not poping up in the
endpoints display. 
I assume that once media is being relayed between endpoints then ZRTP should
pass between like it happens when both endpoints on the same LAN network.

What could cause the ZRTP not to work between endpoints when media is
bypassing the FS?

regards

Assaf



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