IP phones freezes in the middle of operations for example if there is an incoming call and when its picked up the phone still rings, further when I try to dial number it will give no dial tone and will not dial the number for like more than 2 minutes, this is about internal calls, not the ones which need to go through voice gateway, but i am sure if on LAN i am gettting is kind of delay and unresponsiveness, long distance call will suffer the same...
When the phone is restarted it becomes stable.
Is this some kind of bug or Call Manager congestion if there is a congestion how to read the congestion between 2 phones or how to identify it
Call Manager = 5.1
Phones = 7970s, 7941s 7911s.