Voice2 Server lockup. The unit was running firmware v2.0.5
Solution:Problem was cured in this instance with a Power cycle of the unit
Other solutions a) Trace level set too high: Go to Config> admin> log screen and ensure the trace level is set to 1 or 2 .... the higher the trace level (max level is 4) the more higher the CPU utilisation which could cause the unit to lock up.
b) Disconnect timer set too highGo to Network > advanced screen and set the disconnect timer to 7-10 seconds. A high 20-30 second disconnect timer means that each Voice2 unit server or client must wait that the set timeout value before attempting a reconnect.