Cisco OL-21035-01 - Manual

C H A P T E R
6-1
Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0
OL-21035-01
6
Troubleshooting and Maintenance
This chapter provides information that can assist you in troubleshooting problems with your ATA 187 or
with your IP telephony network. It also explains how to clean and maintain your phone.
This chapter includes these topics:
• Resolving Startup Problems, page 6-1
• ATA 187 Resets Unexpectedly, page 6-5
• Troubleshooting ATA 187 Security, page 6-7
• General Troubleshooting Tips, page 6-7
• Where to Go for More Troubleshooting Information, page 6-9
• Cleaning the ATA 187, page 6-10
Resolving Startup Problems
After installing an ATA 187 into your network and adding it to Cisco Unified Communications Manager,
the phone should start up as described in the
Installing the ATA 187, page 3-3 . If the phone does not start
up properly, see the following sections for troubleshooting information:
• Symptom: The ATA 187 Does Not Go Through its Normal Startup Process, page 6-1
• Symptom: The ATA 187 Does Not Register with Cisco Unified Communications Manager, page 6-2
• Symptom: ATA 187 Unable to Obtain IP Address, page 6-4
Symptom: The ATA 187 Does Not Go Through its Normal Startup Process
When you connect a phone in the network port, the phone should go through its normal startup process
as described in the
Verifying the ATA 187 Startup Process, page 3-3 . 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. Verify that the network port is functional:
– Exchange the Ethernet cables with cables that you know are functional.