Symptom: The Cisco Unified Ip Phone Does Not Go Through Its Normal Startup Process; Manager - Cisco 7931G Administration Manual

Resolving Startup Problems
Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal Startup
Process
When you connect a Cisco Unified IP Phone into the network port, the phone should go through its
normal startup process as described in
screen should display information. If the phone does not go through the startup process, the cause may
be faulty cables, bad connections, network outages, lack of power, and so on. Or, the phone may not be
functional.
To determine whether the phone is functional, follow these suggestions to systematically eliminate these
other potential problems:
1.
2.
3.
4.
If after attempting these solutions, the screen on the Cisco Unified IP Phone does not display any
characters after at least 5minutes, contact a Cisco technical support representative for
additional assistance.
Symptom: The Cisco Unified IP Phone Does Not Register with Cisco
Unified Communications Manager
If the phone proceeds past the first stage of the startup process (LED buttons flashing on and off) but
continues to cycle through the messages displaying on the phone screen, the phone is not starting up
properly. The phone cannot successfully start up unless it is connected to the Ethernet network and it has
registered with a Cisco Unified Communications Manager server.
These sections can assist you in determining the reason the phone is unable to start up properly:
•
•
•
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP)
9-2
Verify that the network port is functional:
Exchange the Ethernet cables with cables that you know are functional.
–
Disconnect a functioning Cisco Unified IP Phone from another port and connect it to this
–
network port to verify the port is active.
Connect the Cisco Unified IP Phone that will not start up to a different network port that is
–
known to be good.
Connect the Cisco Unified IP Phone that will not start up directly to the port on the switch,
–
eliminating the patch panel connection in the office.
Verify that the phone is receiving power:
If you are using external power, verify that the electrical outlet is functional.
–
If you are using in-line power, use the external power supply instead.
–
Switch the external power supply with a unit that you know to be functional.
–
If you are using a in-line power, make sure that the phone is connected to a switch that supports
–
IEEE 802.3af Class 3. For more information, see
If the phone still does not start up properly, power up the phone with the handset off-hook. When
the phone is powered up in this way, it attempts to launch a backup software image.
If the phone still does not start up properly, perform a factory reset of the phone. For instructions,
see Performing a Factory Reset, page
Identifying Error Messages, page 9-3
Checking Network Connectivity, page 9-3
Verifying TFTP Server Settings, page 9-3
Chapter 9
Verifying the Phone Startup Process, page
Providing Power to the Phone, page
9-13.
Troubleshooting and Maintenance
3-8, and the phone
2-3.
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