Chapter 6 Troubleshooting and Maintenance
Resolving Startup Problems
–Disconnect a functioning phone from another port and connect it to this network port to verify the port is active.
–Connect the phone that will not start up to a different network port that is known to be good.
–Connect the phone that will not start up directly to the port on the switch, eliminating the patch panel connection in the office.
2.Verify that the phone is receiving power:
–If you are using external power, verify that the electrical outlet is functional.
–If you are using the external power supply, switch with a unit that you know to be functional.
3.If the phone still does not start up properly, perform a factory reset of the phone.
Symptom: The ATA 187 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, 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:
•Registering the Phone with Cisco Unified Communications Manager, page
•Checking Network Connectivity, page
•Verifying TFTP Server Settings, page
•Verifying DNS Settings, page
•Verifying Cisco Unified Communications Manager Settings, page
•Cisco Unified Communications Manager and TFTP Services Are Not Running, page
•Creating a New Configuration File, page
•Registering the Phone with Cisco Unified Communications Manager, page
Checking Network Connectivity
If the network is down between the phone and the TFTP server or Cisco Unified Communications Manager, the phone cannot start up properly. Ensure that the network is currently running.
Verifying TFTP Server Settings
You can determine the IP address of the TFTP server used by the ATA 187 by entering http://x.x.x.x where x.x.x.x is the IP address of the ATA 187.
If you have assigned a static IP address to the phone, you must manually enter a setting for the TFTP Server 1 option. See “Accessing the IVR and Configuring Your Phone Setting” section on page
If you are using DHCP, the phone obtains the address for the TFTP server from the DHCP server. Check the IP address configured in Option 150.
You can also enable the phone to use an alternate TFTP server. Such a setting is particularly useful if the phone was recently moved from one location to another. See “Accessing the IVR and Configuring Your Phone Setting” section on page
Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0
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