CHAPTER 8
Troubleshooting and Maintenance
This chapter provides information that can assist you in troubleshooting problems with your Cisco Unified
IP Phone or with your IP telephony network. It also explains how to maintain your voice network and clean
your phone.
If you need additional assistance to resolve an issue, see the Documentation, support, and security guidelines,
on page xiii.
This chapter includes these topics:
•
Troubleshooting, page 79
•
Maintenance, page 91
Troubleshooting
Use the following sections to troubleshoot problems with the phones.
Startup Problems
After installing a Cisco Unified IP Phone into your network and adding it to Cisco Unified Communications
Manager, the phone should start up as described in the Phone Startup Verification, on page 34. If the phone
does not start up properly, see the following sections for troubleshooting information.
Cisco Unified IP Phone Does Not Go Through Normal Startup Process
Problem
When you connect a Cisco Unified IP Phone into the network port, the phone should go through its normal
startup process as described in Phone Startup Verification, on page 34.
Cause
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.
Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
79
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