I have a Snom 320 that seems to be playing up. I set up another 10 Snom's successfully but this one is being problematic. It often on reboot sticks with it saying on the screen Prov.request attempt and counts down from 20. Sometimes it will just log on and work fine. Other times it will log on and work but i dont get a ringtone. Its running firmware version 7.3.30. Anyone got any ideas why this one is being an issue??