We have a customer which is using about 100 Cisco phones (6941). These phones do not use anything else then hunt and pickup groups. The sales department (and a couple of other phone users) are reporting that their phone gets stuck. This means that the 'line'-button light keeps flashing red. The phone does not respond to anything you do. The screen shows the normal idle screen. The PC behind the phone keeps working. The only way to get the phone working again is to replug the network cable.
These people have been working with the phones for about 2 years without problems. We have not changed anything in the configuration (as far as I know..) and now suddenly the problems start occuring. It involves about 15 people / phones who are reporting problems.
I think your apache tomcat service is utilising lots of memory. And that may be cause of it.
Restart the server will be good option. Is it production environement, if yes raise tac case before doing it.
Please rate helpful posts by clicking stars below the answer.