Once in a while i receive a threshold alarm (>15 channels being used on our QSIG PRI trunk). I then view call detailed history for the trunk on CDR Analysis and Reporting Tool and notice multiple channels being opened by a specific calling number to called number. As an example, during a 2 second period there up to 10 channels that are opened by the same source/destanation call. The origination and destination leg IDs are different for each call so I know that CUCM is involved with setting up each call.
Did anyone experience this before? It happens maybe once or twice a day, quick spike on channel utilization and then utilization goes back to normal 3-4 active calls.
Thanks for any input you may have.