IP Office 9.1 phone system with Polycom Soundpoint IP 335 and Soundpoint IP 550 phones attached via SIP. Phones will only register with system with the "Auto-create Extn/User" feature enabled (System/LAN1/VoIP tab). Previous to 9.1 this feature could be left enabled. Beginning in 9.1 the feature becomes disabled after 24 hours. I know that I should be able to register SIP phones without enabling this feature? Every time the system reboots, the phones go unregistered until this feature is enabled. Same happens if there is a power outage and phones reboot. This seems to let some phones register but some will not until the feature is temporarily enabled. How can I attach these phones without utilizing this feature. The best I can tell, "Auto-create Extn/User" is only to register phones dynamically vs building extn and users manually. All Extensions/Users were manually created in the first place. There just doesn't seem to be a logical reason why the phones won't register without that enabled.
Thanks in advance.
Thanks in advance.