If you know the type of switch that Verizon is using and if you supply the type of PBX, maybe one of the network guys on the forum could check for compatibility issues. If you’re in SE Pennsylvania, my guess is that you are served by a 5ESS. There is a compatibility guide for the 5E that lists the various types of CPE and PBXs. Sometimes this document is helpful in resolving this type of problem. Unfortunately I no longer have access to this documentation.


Gary