I have an unknown issue in two different PBX deployments with a GXP 2160 not answering an incoming call. When the handset is picked up to answer the call, the GXP2160 will show the Dialing menu instead and quit ringing. Other phones on the ring group will continue to ring until the incoming call is answered. This issue occurs on a single GXP2160 in each of my deployments anywhere from 0-2 times per day with an average of 100-200 incoming calls daily.
In both deployments, it is a specific GXP2160 unit that has this issue. There are several other GXP2160 phones in the same deployment that do not have this issue. I have not seen any evidence in a packet capture, captures always show another extension answered the call, but no messages from the GXP2160 during the answering of the call when the issue happens…
I am on the latest firmware. Thanks for any help!