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Cisco Unified IP Phone 7900 Series

Field Notice: FN - 62495 - Phone Firmware 8.0(3) May Cause Cisco Unified IP Phones to be Stuck in Configuring IP State if DHCP and CallManager Servers are Unreachable for More Than Four Minutes


September 5, 2006

NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.


Products Affected

Product

Comments

7905 - CP-7906G

With 8.0(3) FW

7911 - CP-7911G

With 8.0(3) FW

7911 - CP-7911G-NA

With 8.0(3) FW

7941 - CP-7941G

With 8.0(3) FW

7961 - CP-7961G

With 8.0(3) FW

7970 - CP-7970G

With 8.0(3) FW

7971 - CP-7971G-GE

With 8.0(3) FW

Problem Description

The IP Phones listed in the Products Affected section may get stuck in Configuring IP mode if disconnected from both Cisco CallManager and DHCP servers for four or more minutes.

Background

Code within the 8.0(3) IP Phone firmware release caused corruption of timer values used in handling DHCP.

This problem is not present in release 8.0(2).

The problem is fixed in 8.0(4) and later releases.

Problem Symptoms

The IP Phones listed in the Products Affected section may get stuck in Configuring IP mode indefinitely.

Workaround/Solution

Workaround:

None.

Solution:

Upgrade IP Phone firmware to release 8.0(4) or later releases.

Recovery:

If the IP Phone with firmware 8.0(3) displays Configuring IP continuosly, the IP Phone can be recovered by either of the two methods below.

  1. Cycle power to the phone.

  2. Reset the affected IP Phone by entering the **#** key sequence while in the Settings menu.

Either of the above two recovery methods will correct the corrupted timer values.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.

DDTS

Description

CSCsd57320 (registered customers only)

Turbo: DHCP recv socket error on bad address

Revision History

Revision

Date

Comment

1.0

05-SEP-2006

Initial Public Release

For More Information

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