Cisco 7941G-GE - IP Phone VoIP 문제 해결 및 유지 관리 - 페이지 3

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Cisco 7941G-GE - IP Phone VoIP 문제 해결 및 유지 관리

Troubleshooting and Maintenance

Phone Cannot Connect to TFTP Server or to Cisco Unified Communications Manager

Problem

If the network is down between the phone and either the TFTP server or Cisco Unified Communications

Manager, the phone cannot start up properly.

Solution

Ensure that the network is currently running.

TFTP Server Settings

Problem

The TFTP server settings may not be correct.

Solution

Check the TFTP settings. See

IP Address and Routing

Problem

The IP addressing and routing fields may not be correctly configured.

Solution

You should verify the IP addressing and routing settings on the phone. If you are using DHCP, the DHCP

server should provide these values. If you have assigned a static IP address to the phone, you must enter these

values manually. See

DNS Settings

Problem

The DNS settings may be incorrect.

Solution

If you are using DNS to see the TFTP server or to Cisco Unified Communications Manager, you must ensure

that you have specified a DNS server. See

Cisco Unified Communications Manager Settings On Phone

Problem

The phone may have the correct Cisco Unified Communications Manager information.

Solution

On the Cisco Unified IP Phone, press the Settings button, choose Device Configuration, and look at the

Unified CM Configuration options. The Cisco Unified IP Phone attempts to open a TCP connection to all

Phone Cannot Connect to TFTP Server or to Cisco Unified Communications Manager

Check TFTP Settings, on page

Check DHCP Settings, on page

Verify DNS Settings, on page

14.

Troubleshooting and Maintenance