I recently deployed an ATA to be used with new ClearOne teleconferencing equipment. It's part of our new video conferencing rooms that are using celing microphones and speakers. The ClearOne device brings in the audio call and 'mixes' it so it sounds perfect.
Anyway, the issue is that when we dial the 4 digit internal extension, the device rings and can be answered. When the DID is called, they see the incoming ringing when monitoring, but the device is not making an audible tone or the pop up window doesn't work.
So, they won't be able to tell during a meeting that someone is calling in.
CUCM 6.1 ATA 186 current firmware etc