I was wondering if anyone has got the new Siemens Gigaset S450 IP or C450 IP phones (these are the VOIP not the pure analogue versions) working on an Epygi. I cannot register the phone with the Epygi and get either "Registration failed" or "Server not accessible" errors on the phone.

The account on the Epygi is valid as I have tested successfully with other VOIP phones including the new Siemens Gigaset SL75 wifi (this has a similar but not identical SIP setup screen). The phone and Epygi firmware are the latest.

The Siemens Gigaset S450IP and C450IP phones are attractive as they are quality DECT handsets/bases with both SIPVOIP and analogue connections.

Many thanks, Lindsay