What I did was have the ITSP change the routing of the calls from the IP for their IAD interface, to the IP for the IPO direct, so the calls would be presented to our switch directly instead of to the IAD. I have seven other DIDs coming to our IPO without any trouble, but those numbers only get occasional use as they are FAX lines. The problem occurs only when more than 7 calls are presented at a time. In the Office System Status screen, I see in the VCM section, that there are 124 available channels. Once there are 7 in use, I start seeing the congestion count going up and only seven calls at a time are presented on the switch. I had the ITSP switch the IP where the calls are presented back to the IAD and the calls started coming in normally. (Routed through the IAD to the PRI inputs on the switch.) I have 60 valid sip licences and 124 valid VCMs. It almost seems that the IPO is only validating 7 VCMs before it whacks out.
I did see a lot of these:
1216945306mS CMMap: Mapper::AllocateCodec unable to allocate resource
1216945382mS CMMap: Mapper::AllocateCodec unable to allocate resource
Those are taken from the system monitor.
Don't know if that might shed some light...
If the VM is not the same version as the IPO, and the VM box is the first place the calls go before they are routed into the call center, could that be the problem?
Thanks,
-Jon