I have multiple sites running different builds of 14.2 across the state. They are not linked together in any way.

What happens is the phone will stop taking workgroup calls. It behaves as if it is busy. Calls queue or overflow depending on how the work group is configured. Calls directly to the phone extension or DID calls ring and behave normally, but workgroup calls just will not ring on the phone.

I unplugged the phones, plugged back in, same issue.

Replaced phone with a different IP230 or 565 and the phone will now ring. A few weeks later, same issue occurs.

Verified the firmware version is correct, phone behaved normally for months before the issue occurs.

I discovered re-booting the phone from the diagnostic tool will get the phone ringing again.

Until i figured that out, i was replacing the phones with IP485G phones which seemed to cure the problem.

Anyone seen this before?

builds 19.45.8701 and 19.44.1602 are at two of the sites.

thanks