After upgrading my UC520 (4x BRI, 24U) device the voicemail function and AA is not working properly anymore.
When dialing the voicemail extension the line is completely silenced. I am running now the latest IOS (12.4 (20)T) including the latest restore to factory settings script 2.8.cfg.
Please advice how I have to proceed to get my AA and Voicemail functions up and running again.
With kind regards,