This is the second time in about 3-4 weeks that we have experienced this problem. Both times it has been a Monday.
Anyway, I start getting a lot of reports of poor voice quality and then when I look at the logs on our publisher it shows a ton of application events related to phones unregistering. It's not a just a small group but almost everyphone in the cluster (about 1,400).
Initially, the phone should be registered with the subscriber. I checked the event logs and nothing out of the ordinary shows up. There were not any reboots or anything. It's 7905's,40's and 60's I believe.
Has anyone else had something like this happen? I've found posts of a few phones doing this but not this many.
We are on version 4.1(3)sr1. All phones run over 3550's and we have gig connections to all 23 buildings in the area.