I am facing a Problem with 7961 IP Phones .I had done factory Default for 3 Phones in my lab and after doing factory default the Line buttons are cycling with green LED and it never happened In those Phones DHCP was disabled and manually configs were done earlier.But weather this can cause problem when doing factory default ?
If that had caused the problem what is the solution ?
I'd suggest you to take a packet capture on the switch where the phone is connected and span the phone port using monitor session commands. This will give you an idea whether the phone is doing anything at all and if it is trying to reach the dhcp. We are factory resetting the phone, i.e. erasing all config and firmware on it, so it should behave like a new phone, which is to reach out to dhcp.
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