BCM50 Rls 3.0 Trunk SIP with a SIP provider

[heros2007]

I have a BCM50 Rls 3.0

I'm tryng to set up a trunk SIP.
I put the BCM50 behind NAT 1:1

BCM50 192.168.3.5 <--NAToneTOone--> 213.215.x.x <----> IP_ _SIP_Provider

I can get signalling working but when I hang on the phone
I dont have audio.

The problem seems to be that BCM put his private IP in "Contact" field

Anyone got it to work someway?
Thanks
Heros

 

[DBrewsky]

On your router, set the DMZ to be the internal IP address for the BCM. If that doesn't work, try putting the BCM directly onto the 213.x.x.x address, then try again. NAT'ing has huge issues with RTP voice packets.


--DBrewsky

 

[heros2007]

I got sip trunk working only for outbound calls.
Problem is that I cant make BCM send a REGISTER ot the provider there is no way to get inbound calls as you cant register!!!