[asterisk-dev] why 4 UDP ports per SIP call?

Olle E Johansson olle at voop.com
Mon Nov 19 14:09:19 CST 2007

19 nov 2007 kl. 20.53 skrev Klaus Darilion:

> Hi!
> Analyzing Asterisk I see 4 new UPD sockets opened by Asterisk per
> incoming SIP call. I would assume RTP+RTCP=2, but why are there 4  
> ports
> opened?
Have you enabled video at all?


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