I have a Mivoice Office 250 system with firmware 6.2.5.81. I am connecting a Mitel conference room phone model UC360 which connects as a SIP phone. This is the only phone in its SIP phone group. I set a very secure authentication password. The phone connects and works fine but I keep getting this error anyway. The authentication password is not blank and is not the extension number. It is 15 characters consisting of capital, lowercase symbols and numbers. Enable In-bound Authentication is set to No. If I change that then the phone won't connect. If I clear the alarm it comes right back. I have a cordless phone configured exactly the same way as far as I can tell and it isn't causing any alarms. The UC360 and the PBX are on the same LAN.
What else can I do to clear this alarm?
Thanks!