06-10-2016 12:49 AM - edited 03-17-2019 07:11 AM
Hi,
We have experienced multiple occasions wherein our trunkline is not reachable. And based on the isolations done, the call in numbers configured at the Cisco Unity Express are resulting to a busy tone when dialed. Temporary solution is to reload the CUE module inside the Voice Gateway.
Asking for your assistance on why this is happening and what needs to be done to solve the issue permanently.
Thank you.
06-10-2016 01:19 AM
Take debug ccsip message, debug voip ccapi inout and debug isdn q931 (if the call is coming in on PRI) and check what is happening on the CME - CUE when the call fails. How many ports do you have enabled on the CUE? Maybe the ports are completely used by internal users which is why you are getting busy.
If the call is coming in via FXO to your CME, it could be an fxo disconnect issue on the port. Due to this, the call stays up on the router even if the PSTN has actually disconnected the call. Take debug vpm signal, debug voip vtsp default along with above debugs to check this.
06-10-2016 02:39 AM
When it is happening you must check the status from the CUE, could be a problem with the CUE. I had to reinstall the CUE one time to get rid of these CUE 'hangs'
Jan
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