Cisco 7942G - Unified IP Phone VoIP Risoluzione dei problemi e manutenzione - Pagina 4

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Cisco CallManager and TFTP Services Are Not Running

the Cisco Unified Communications Manager servers that are part of the assigned Cisco Unified Communications

Manager group. If none of these options contain IP addresses or show Active or Standby, the phone is not

properly registered with Cisco Unified Communications Manager. See

or to Cisco Unified Communications Manager, on page 3

Cisco CallManager and TFTP Services Are Not Running

Problem

If the Cisco CallManager or TFTP services are not running, phones may not be able to start up properly. In

such a situation, it is likely that you are experiencing a systemwide failure, and other phones and devices are

unable to start up properly.

Solution

If the Cisco CallManager service is not running, all devices on the network that rely on it to make phone calls

are affected. If the TFTP service is not running, many devices cannot start up successfully. For more

information, see

Configuration File Corruption

Problem

If you continue to have problems with a particular phone that other suggestions in this chapter do not resolve,

the configuration file may be corrupted.

Solution

Create a new phone configuration file. See

Cisco Unified Communications Manager Phone Registration

Problem

The phone is not registered with the Cisco Unified Communications Manager

Solution

A Cisco Unified IP Phone can register with a Cisco Unified Communications Manager server only if the

phone has been added to the server or if auto-registration is enabled. Review the information and procedures

Cisco Unified Communications Manager Phone Addition Methods

to the Cisco Unified Communications Manager database.

To verify that the phone is in the Cisco Unified Communications Manager database, choose Device > Phone >

Find from Cisco Unified Communications Manager Administration to search for the phone based on its MAC

Address. For information about determining a MAC address, see

Determination.

If the phone is already in the Cisco Unified Communications Manager database, its configuration file may be

damaged. See

Troubleshooting and Maintenance

Start Service, on page

15.

Configuration File Corruption, on page 4

Phone Cannot Connect to TFTP Server

for tips on resolving this problem.

Create New Phone Configuration File, on page

to ensure that the phone has been added

Cisco Unified IP Phone MAC Address

for assistance.

Troubleshooting and Maintenance

15.