I have a PBXAct system up and running and have some Polycom phones I would like to use.
I had success provisioning an IP6700 phone, but have had no luck with VVX410 or VVX310.
Does that last line mean that even configuring the phone manually via the phone’s web interface does not work?
That should mean the problem is not the EPM. I would look at the Polycom’s logs and also do a packet capture on the PBX to see what traffic is making it from the PBX (assuming you are not seeing registration failures from the phone on the pbx…)