[asterisk-users] crossed channels

Johan Wilfer lists at jttech.se
Tue Feb 19 12:30:47 CST 2013

2013-02-19 17:10, Juan Carlos Agudelo skrev:
> I don't have analog channels, this happens with SIP Trunk...
> Juan..

I've seen this with one of our sip-trunks. Our provider used opensips
for that platform I think. If had the same account registered in two
asterisk-servers and they answered the call at the same time, audio was
from both asterisk-servers and the phone from pstn, like a 3-way conference.

I also watched a presentation about rtp ports, mentioned on this list
some time ago, explaining quite a bit on rtp ports and security:

So my guess is that if you get two devices using the same port, or one
device that don't stop sending, you will hear that injected in your call.

Johan Wilfer

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