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Cisco IP Phone: Blank screen of death

If you get blank screen "of death" at your Cisco IP Phone after power on - you need make next manipulations:

If nothing happen few minutes after phone was powered on.

After all nothing help. Make phone connected direct to computer. Start sniffer software (such as WireShark) and try to analyze captured packets from phone. If no traffic captured from device then it mean device is totally dead.

Questions?

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