CFwdALL failing when forwarding an IP 7940 to a t-mobile cell phone.
We are having issues forwarding our IP phones to a T-mobile cell phone. Other cell carriers i.e. Sprint, Verizon and MetroPCS work fine. The calls forwarded to T-mobile will sometimes connect and the caller will get dead air. If you dial the IP phone's internal extension it works but if you dial the 10 digit number i.e. off network it fails. Any suggestions?
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...