Phone model: 7841 or 6921 is stuck after long use.. the problem is only with one extention.. and it repeatable issue..
- Phone firmware: sip78xx.11-7-1-17
- CUCM version: 10.5.2.11900-3
This issue is not limited to only PST gateways calls, as internal calls are also not working for this particular user.
Kindly advise