I have a customer location with 500 7925 wireless phones. They generally work fine, but if left on the network for a number of days they will begin to have voice quality problems and eventually they will lock up and you are unable to navigate menus or reboot. This is generally 15 - 20 days, but some last longer and I've also seen the failure on phones up for only five days. The battery must be removed to reboot the phone, and they are good for another 15-20 days. Multiple versions of firmware have been tested with the same result. Phones from another location have been relocated and begin experiencing the same trouble. The network is all Cisco.
Any help is appreciated.
Dave Rivers
