Table Of Contents
Cisco IP Phone 7960, 7940, and 7910 Series Release Notes for Firmware Release 5.0(3) for Cisco CallManager Versions 3.1, 3.2, and 3.3
Use these release notes with the P00305000300 and P00405000300 firmware releases for Cisco IP Phone 7960, 7940, and 7910 series that are running on Cisco CallManager Release 3.3. These firmware versions are compatible with all versions of Cisco CallManager Release 3.1, 3.2, and 3.3.
These release notes provide the following information:
•Cisco IP Phone Administration Guide for Cisco CallManager
•Cisco CallManager System Guide
•Cisco CallManager Administration Guide
•Cisco CallManager Serviceability Guide
•Cisco CallManager Troubleshooting Guide
•Release Notes for Cisco CallManager
•Cisco IP Phone User Guides and Quick Reference Cards—available online (see the URLs below).
Obtain information about Cisco IP Telephony at the following URLs:
• Cisco IP Phone information:
• Cisco CallManager information:
New and Changed Information
New Software Features
The following new software features are supported in the P00305000300 and P00405000300 firmware releases for Cisco IP Phone 7960, 7940, and 7910 series that are running on Cisco CallManager Release 3.3, 3.2, and 3.1.
Image Authentication and Signed Binary Files
Cisco has added image authentication to its various IP phone protocols. The addition of image authentication prevents tampering with the binary image prior to it being loaded into the phone. Any tampering with the image causes the phone to fail the authentication process and reject that image. The image authentication occurs through signed binary files.
The P00305000300 and P00405000300 firmware releases do not use regular binary files, as did previous releases, but only use signed (authenticated) binary files. This step improves IP phone security on the Cisco IP Phone models 7910 and 7940/60.
Note After you have installed the P00305000300 or P00405000300 firmware release, you cannot install any unsigned release on the phone. You can upgrade to newer signed (authenticated) releases, or downgrade to older signed releases (such as P00305000101) but be aware that only signed images will function on the phone.
If you are using the Cisco IP Phone 7914 Expansion Module, you must upgrade the Expansion Module to firmware release S00103020003 before you install the authenticated 7940/60 phone load.
If you revert the cluster to Cisco CallManager Release 3.1 or 3.2, the P00305000300 or P00405000300 firmware release will function on these Cisco CallManager versions. If you have an unsigned default firmware image, the IP phone will be unsuccessful in its attempt to load the default image (because it is not signed), and will display the "file not found" message on the LCD screen. The IP Phone will then log an error of "file not found" in the CCM event log, but will continue to function by using the P00305000300 or P00405000300 firmware image that was previously installed on the IP phone.
Cisco will provide all defect fixes for Cisco CallManager 3.1, 3.2, and 3.3 firmware loads in firmware load P00305000300 and P00405000300 and later.
Known and Resolved Problems
Known problems (bugs) are graded according to severity level. These release notes contain descriptions of
•All severity level 1 or 2 bugs.
•Significant severity level 3 bugs.
•All customer-found bugs (regardless of severity level).
You can search for problems by using the Cisco Software Bug Toolkit. To access the Software Bug Toolkit, perform the following procedure:
Step 1 Log in to Cisco.com.
Step 2 Choose Service & Support > Technical Support Help—Cisco TAC > Tool Index.
Step 3 In the Jump to: links at the top of the page, click the letter S; then choose Software Bug Toolkit.
You can also access the Software Bug Toolkit by entering the following URL in your web browser:
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