I have approximately 10 UC520 systems all experiencing an intermittent call park problem. I am curious if anyone else in the community has experienced a similar problem.
Call park is configured and works without issue 99% of the time, however, there are times that the Park soft key simply does not do anything when pressed. End users can press the Park softkey until they are blue in the face and the phone still does nothing. The audio path is not interrupted and the call is not dropped; it simply will not park. This is happening across a variety of end points including 7911, 7941 and 7965. I know there are sufficient free park slot resources available when this issue is occurring. This issue will generally clear itself up after an undetermined amount of time, but sometimes requires a reset of the phone in order to correct.
One of the UC devices that just recently experienced this problem was running IOS Version 12.4(22)YB4 with these phone loads: SCCP41.8-4-2S and SCCP45.8-4-2S.
I've reviewed the TAC Case Collection and can't find a documented problem.
Anyone else experience a similar problem?