We have a customer with an InterTel 5000 v2.4.1.30 with a PRI. They have DIDs as well. There are 4 DIDs that when you dial the, the call just drops. At first I thought it was a carrier problem, until I found out these extensions are being forwarded. I took the forwarding off one of the problem extensions, and the DID rang in normally. In addition, the phone would forward to an outside number when a call was made from another extension. However, when an extension was forwarded to an outside number, an incomming call would still drop.

Does anyone know the flag that would allow, or disallow the forwarding of outside calls to another outside number?

Of course, the tech who set this up, and just updated their system, is on vacation, hence why I am asking here.