"merging calls" problem

[wlady]

Hello,

I've a very strange problem with a elastix 2.0.0 PBX connected with a VOIP trunk (no additional cards, only connected to internet with normal ethernet conn).
When I receive a second contemporary call my first call often fall or I can't hear the interlocutor until second call is closed. The harshest thing is that the second caller can listen to the first call for a while !

What's going on?

Thanks!

 

[jgutierrez]

What does your voip provider tells you about this issue?

 

[wlady]

They say it's only a my problem

 

[rmiddle]

Re:

They say it's only a my problem

It actually sounds like a Nat issue to me. The streams are getting crossed. But I am still pretty new to this. Is the on a Public IP? Are you running a sip helper on you firewall?

Thanks
Robert