anyone else had issues w/ Cisco 8800 series phone (8861/8851) where it's powered on, but there's no dial tone, or when you try to press any keys nothing happens. As if the phone is frozen, but if you wait a while, eventually it resumes normal behavior. Doesnt require a reboot. While the issue is present, device stays register to sip server, has layer 3 connectivity. Able to WEB access to the device.
Device Model firmware: sip88xx.11-1-1MSR1-1.loads
