We are facing a voice quality probem in our voip solution using CUCM 8.6 and AS5400 GWs;
Some PSTN calls using PRI lines are experiencing very bad quality.(1 call per 50 more or less)
The called number can be mobile or landline, and i can know that the call will have this problem even before the call is established, just hearing the ringback tone (Distorsion). Sometimes i can also hear third party conversation mixed up with my call .
All the serial interfaces and controllers are error free.
The same problem when i use a second AS5400 located on a different datacenter.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...