Url call is disabled

PBX Firmware: 1.818.210.62-3
PBX Service Pack:

Phone: Polycom IP 331

Issue: The phone is setup and registering on the server but when i try to use the phone to make a call i get “url call is disabled” on the phone display.

Any and all help is appreciated.

We are having the same issue - Polycom IP450 phones.

Thanks for any help.