IP Trunk Calls not working

[brogerson]

I have two systems at 9.0sp3 that has an IP trunk to a system with 7.2 software.

The configuration looks good and the trunk is established.  When I try and make a call across the trunk i get a out of service message on my phone even though the trunk shows established or idle in maintenance.

CCS Trace shows the PBX is not even attempting to make the call.

[ralph]

I've seen something similar and was never able to resolve it.  Even tech support said the config looked right.  I finally gave up and  routed the calls through a third PBX.
Having said that usually the problem is the wrong IP address is programmed in the XNET programming.

Ralph

[sunspark]

Can you tcpdump your call and share the .Pcap?

[brogerson]

I have checked the XNET forms and in the newer versions of SW you can't configure the IP's.

[sunspark]

Check your ARS routes

share the Tcp dump

[johnp]

I have had cases where the customer natted beween locations in the firewall instead of routing. All looked good, but would only work after the far end send a call. I think it open a pinhole