Table Of Contents
Cisco Unified IP Phone 7960G and 7940G Release Notes for Firmware Release 8.1(1) (SCCP)
February 10, 2009
Use these release notes with the Cisco Unified IP Phone 7960G and 7940G running SCCP firmware release 8.1(1).
This firmware release is compatible with Cisco Unified Communications Manager releases 7.0, 6.1 and 6.0, Cisco Unified CallManager releases 5.1, 5.0, 4.3, 4.2, 4.1, 4.0, and Cisco CallManager release 3.3.
These release notes provide the following information:
Cisco Unified IP Phone Documentation
Refer to publications that are specific to your language, phone model and Cisco Unified Communications Manager release. Navigate from the following documentation URL:
Cisco Unified Communications Manager Documentation
Refer to the Cisco Unified Communications Manager Documentation Guide and other publications specific to your Cisco Unified Communications Manager release. Navigate from the following URL:
Cisco Unified Communications Manager Business Edition Documentation
Refer to the Cisco Unified Communications Manager Business Edition Documentation Guide and other publications that are specific to your Cisco Unified Communications Manager release. Navigate from the following URL:
New and Changed Information
The following sections contain information on features introduced in firmware release 8.1(1).
Host Movement Detection
Cisco Unified IP Phone 7960G and 7940G firmware release 8.1(1) provides support for the Host Movement Detection feature. This feature allows the Cisco Unified IP Phones to recognize when a host leaves the network and authenticates a new host.
The Host Movement Detection enhancement extends Cisco Discovery Protocol (CDP) to include a Second Port Status Type, Length, Value (TLV) that informs a network switch of the presence or absence of devices connected to a Cisco Unified IP Phone 7960G or 7940G running the SCCP protocol. This enhancement ensures that the IP Phone port is closed when a device is removed, so the port cannot be accessed by plugging in another unauthorized device, and it allows the device to be moved to a different location in the network. Without the Host Movement enhancement, when an authenticated device is moved to a different phone, the upstream network access control is not aware of the movement, and thinks that the device is still authenticated at the original location (switch port).
Note that Host Movement does not apply when the end device supports 802.1x authentication, using a supplicant on the end device. When 802.1x is used, the supplicant handles the 802.1x authentication (logon and logoff), and, the phone can handle a proxy logoff for the end device (when 802.1x authentication is in use). This Proxy EAPOL-Logoff enhancement was added in SCCP release 7.2(2) for the 7940G and 7960G phones.
This Host Movement CDP enhancement is included in Cisco Unified IP Phone firmware 8.1(1), and requires connection to a switch running a Cisco IOS software release that supports the Host Movement Detection feature. See the documentation for your switch for more information.
Network Access Control is a set of protocols that verify the identity of end devices connected to a network switch, either directly or through a Cisco Unified IP Phone. When a device is connected directly to the switch, a Link Up event notifies the switch of the presence of the device. The device is authenticated and the switch applies the appropriate access control policies. When the device is disconnected, a Link Down event is sent to remove network access policies from the port.
This Link Down event was not sent when a connected device was removed from Cisco Unified IP Phones running firmware 8.0(10) or earlier. Since no Link Down event was sent, the port could potentially be accessed by unauthorized devices if plugged into the Cisco Unified IP Phone. The Host Movement Detection enhancement removes this potential security issue.
The link up/down information in the CDP Second Port Status TLV (added by the Host Movement Detection enhancement) allows the switch to de-authenticate devices which were previously authenticated by the MAC Authentication Bypass method (used when the end devices does not support 802.1x authentication).
Switch Compatibility Matrix
Table 1 lists the switches that are supported with the Cisco Unified IP Phone 7960G and 7940G for Host Movement Detection.
Table 1 Supported Switches
Switch 3xxx Series 4xxx Series 6xxx Series 6xxx Series
Also called IOS; supports the TLV feature.
Also called Catos; supports the host presence feature.
Before using the Cisco Unified IP Phone 7960G or 7940G with Cisco Unified Communications Manager release 7.0 or earlier, you must install the latest firmware on all Cisco Unified Communications Manager servers in the cluster.
To download and install the firmware, follow these steps:
Step 1 Go to the following URL:
Step 2 Log in to the Tools and Resources Download page.
Step 3 Choose the IP Telephony folder by clicking +.
Step 4 Choose the IP Phones folder.
Step 5 Choose the Cisco Unified IP Phones 7900 Series folder.
Step 6 Choose the Cisco Unified IP Phone 7960G link or the Cisco Unified IP Phone 7940G link.
Step 7 Choose the Skinny Client Control Protocol (SCCP) Software.
Step 8 Choose 8.1(1) from the Latest Releases folder.
Step 9 To download the firmware for the Cisco Unified IP Phone 7960G and 7940G, select one of the following files and follow the prompts:
•For Cisco CallManager 4.3 and earlier:
•For Cisco Unified CallManager 5.0(1), 5.0(2), and 5.0(3):
•For Cisco Unified CallManager 5.0(4) and later:
Step 10 Double-click one of the downloadable files in Step 1 and click the Readme hyperlink, under the Additional Information section, which contains installation instructions for the corresponding firmware:
Follow the instructions in the Readme file to install the firmware.
This section contains these topics:
Using Bug Toolkit
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.
You can search for problems by using the Cisco Software Bug Toolkit.
To access Bug Toolkit, you need the following items:
•Cisco.com user ID and password
To use the Software Bug Toolkit, follow these steps:
Step 1 To access the Bug Toolkit, go to http://tools.cisco.com/Support/BugToolKit/action.do?hdnAction=searchBugs.
Step 2 Log on with your Cisco.com user ID and password.
Step 3 To look for information about a specific problem, enter the bug ID number in the "Search for bug ID" field, then click Go.
Table 2 lists Severity 1, 2 and 3 defects that are open for the Cisco Unified IP Phone 7960G and 7940G using the SCCP version of firmware release 8.1(1).
For more information about an individual defect, you can access the online record for the defect by clicking the Identifier or going to the URL shown. You must be a registered Cisco.com user to access this online information.
Because defect status continually changes, be aware that Table 2 reflects a snapshot of the defects that were open at the time this report was compiled. For an updated view of open defects, access Bug Toolkit as described in the "Using Bug Toolkit" section.
Table 2 Open SCCP Caveats for the Cisco Unified IP Phone 7960G and 7940G
Identifier Headline and Bug Toolkit Link
Cisco Unified IP Phone 7960G does not mark Transport Layer Security (TLS) as inactive; this results in TLS being renegotiated.
There are no resolved caveats for firmware release 8.1(1).
Obtaining Documentation and Submitting a Service Request
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