CME 8.5 - IP Phones lock up with no dial tone but can receive ca
Our issue seemed to be triggered by GPickup / Pickup of a call from a hunt group.
We had a TAC case going for about 2 months to try and resolve it (numerous debugs/packet captures etc) but the issue didn't occur every time, only once or twice per day out of 4 phones taking calls all day.
TAC weren't able to reproduce it in the lab and the developers created some patches but lab testing showed they introduced other issues (according to the TAC engineers) so we never applied them.
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...