Table Of Contents
Cisco Unified Wireless IP Phone 7920 Release Notes for Firmware Release 3.0
For Cisco Unified CallManager Versions 5.0, 4.2, 4.1, 4.0, 3.3, and later
April 17, 2006
Use these Release Notes with the cmterm_7920_4.0-03-00 image for the Cisco Unified Wireless IP Phone 7920 running with Cisco Unified CallManager Versions 5.0, 4.2, 4.1, 4.0, or 3.3(4) and later.
These release notes describe important information and known problems for this release of the Cisco Unified Wireless IP Phone 7920. These release notes provide the following information:
Cisco Unified Wireless IP Phone 7920 Guide for Cisco Unified CallManager 4.0—Provides descriptions of phone tasks for the wireless IP Phone user. Refer to this guide at this link:
Cisco Unified Wireless IP Phone 7920 Administrator Guide for Cisco Unified CallManager—Provides instructions for configuring phone services and directories at this link:
For more information about the Cisco Unified Wireless IP Phone 7920, refer to the following publications available at this URL: http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/english/wip7920/index.htm:
•Cisco Unified Wireless IP Phone 7920 Accessory Guide
•Cisco Unified Wireless IP Phone 7920 Design and Deployment Guide
•Regulatory and Compliance Information for the Cisco Unified Wireless IP Phone 7920
For information about configuring the Cisco Unified Wireless IP Phone 7920 in Cisco Unified CallManager, refer to the following publications for your version of Cisco Unified CallManager at this URL:
•Cisco Unified CallManager Administration Guide
•Cisco Unified CallManager System Guide
•Cisco Unified CallManager Features and Services Guide
•Cisco IP Telephony Local Installer
New and Changed Features
This section describes the new features and changes for the 3.0 firmware release for the Cisco Unified Wireless IP Phone 7920.
EAP-FAST Security Feature
To provide more secure authentication in the wireless network, the Cisco Unified Wireless IP Phone 7920 now supports Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST). You can use either WEP or Temporal Key Integrity Protocol (TKIP) encryption when using EAP-FAST.
A client server security architecture, EAP-FAST encrypts EAP transactions within a Transport Level Security (TLS) tunnel. The tunnel is based on Protected Access Credentials (PAC) for more secure authentication between the client and the RADIUS server.
Note•The default expiration for a PAC is one week in the Cisco Access Control Server (ACS). If the phone has an expired PAC, it will take approximately 20 seconds longer to authenticate with the RADIUS server while the phone gets a new PAC.
•If you were using LEAP prior to upgrading to firmware release 3.0, be aware that EAP mode may change to EAP-FAST after upgrading the firmware when EAP-FAST is enabled on the RADIUS server. With firmware release 3.0, the default setting for EAP mode is Auto. When using the Auto setting for EAP mode, EAP-FAST has precedence over LEAP.
If the Cisco Unified Wireless IP Phone 7920 firmware is downgraded to 2.0 or earlier and you are using EAP-FAST for authentication, the phone will not be able to authenticate. Firmware Release 2.0 does not support EAP-FAST, so you must use LEAP as your authentication method with earlier releases and enable it on the Cisco ACS.
Cisco Unified Wireless IP Phone 7920 Localization
Release 3.0 firmware provides these translated and localized versions of the phone:
Prior to upgrading to firmware release 3.0, download the locale installer and configure the languages in Cisco Unified CallManager. For more information, refer to Using the Cisco IP Telephony Locale Installer for Cisco Unified CallManager for your Cisco Unified CallManager release.
Note After modifying the user locale on the Cisco Unified Wireless IP Phone 7920, you must power cycle the phone.
Cisco Unified Wireless IP Phone 7920 for Australia and New Zealand
A version of the Cisco Unified Wireless IP Phone 7920 is now available for the Australia and New Zealand market. To comply with Australia and New Zealand requirements, this model (CP-7920-AU-K9) has a separate buzzer to ring the phone. The buzzer is supported with Version 3.0 firmware.
Because the phone rings only through the buzzer, other ring tones are not supported. All tones, including warning tone, play the same sound. The phone setting, Ring Tone Output, is not applicable to the Australia/New Zealand version of the phone.
The Cisco recommended headset (ear bud) does not comply with Australia and New Zealand requirements; therefore, this headset is not orderable for these regions. Other headsets are not qualified for use with the Cisco Unified Wireless IP Phone 7920.
For more information, refer to the Cisco Unified Wireless IP Phone 7920 Version 3.0 Data Sheet at:
Battery Life Improvement for Out of Range
When the Cisco Unified Wireless IP Phone 7920 goes outside of the wireless LAN range, the phone enters a power save mode that reduces scanning. The reduction in scanning can help preserve battery life.
After returning to the coverage area, the user can reconnect to the wireless LAN faster by pressing the Answer/Send (green key). The phone immediately scans all channels and attempts to reconnect to the wireless LAN.
Cisco Unified CallManager Release 4.1 Phone Features
The Cisco Unified Wireless IP Phone 7920 now supports Pickup Group enhancements that include the OPickUp softkey for accessing associated pickup group calls and the auto-pickup system parameter available with Cisco Unified CallManager, Release 4.1.
Cisco Unified CallManager Release 4.2 Phone Features
The Cisco Unified Wireless IP Phone 7920 now supports this phone feature available with Cisco Unified CallManager Release 4.2:
Pickup Notification Enhancements
This new feature allows users to receive an audio and/or visual alert when a call rings on a phone in pickup groups in which they are a member. For multiple line phones, the alert is available for pickup groups associated with the primary line only.
You can configure these notification parameters in the Call Pickup Group Configuration window:
•Type of notification (audio, visual, both, or neither)
•Content of the visual notification message (called party identification, calling party identification, both, or neither)
•Number of seconds delay between the time the call comes into the original called party and the notification to the rest of the call pickup group members
You can configure the type of audio notification that is provided when a phone is idle or in use in the Directory Number Configuration window.
Note Directed Call Park feature and Log Out of Hunt Group features are not supported at this time.
Cisco Unified CallManager Release 5.0 Phone Features
The Cisco Unified Wireless IP Phone 7920 now supports the presence feature available with Cisco Unified CallManager, Release 5.0 by providing the busy lamp field (BLF) speed-dial feature. Users can determine the state of a phone line that is associated with a speed-dial number on their phone screen. Icons next to the phone screen show these presence states:
Note To make these new features available to Cisco Unified Wireless IP Phone 7920 users, you must upgrade your Cisco Unified CallManager system with the latest DevPack patch for your release of Cisco Unified Callmanager. See the "Installing the New Firmware Image" section.
Voice Quality Metrics
Administrators can configure the Cisco Unified Wireless IP Phone 7920 to collect call diagnostics and voice quality metrics by setting the Call Diagnostics Enabled and CDR flag to True in the Cisco Unified CallManager Service Parameters.
You can view the metrics to monitor voice quality and troubleshoot network problems by using the Call Statistics screen on the phone. The Call Statistics screen on the phone displays counters, statistics, and voice quality metrics in the following ways:
•During call—You can view the call information by displaying the Call Statistics screen.
•After the call—You can view the call information captured during the last call by displaying the Call Statistics screen
To access the Call Statistics screen during the call or after the call, press Menu > Phone Settings > Phone Status > Call Statistics.
Note You can remotely view the call statistics information by using a web browser to access the Phone web page.
To measure the voice quality of calls that are sent and received within the network, Cisco Unified IP Phones use statistical metrics that are based on concealment events.
To use the metrics for monitoring voice quality, record the typical scores under normal conditions of zero packet loss, and use the metrics as a baseline for comparison.
Phone Web Page
To remotely monitor the Cisco Unified Wireless IP Phone 7920, administrators can use a browser to view the phone web page that displays the following:
For instructions to access the phone web page and details about this information, refer to the "Monitoring the Cisco Unified Wireless IP Phone Remotely" chapter in the Cisco Unified Wireless IP Phone 7920 Administration Guide.
The Cisco Unified Wireless IP Phone 7920 has the ability to pass the ring tone to the headset. To change the ring tone output setting, choose Menu > Phone Settings > Ring Tones > Output. The choices are:
By default, the ring tone output is sent to the speaker.
Automatic Keypad Lock
Users can set their phone to automatically lock the keypad after a time interval. To set the auto lock feature, choose Menu > Phone Settings > Auto Keylock and select one of these intervals:
•Auto 15 seconds
•Auto 30 seconds
•Auto 60 seconds
To unlock the keypad, press and hold the # key, then select OK to confirm.
By default, the auto keylock is off.
The auto keylock feature is enabled only when the phone is idle and on the main screen.
Site Survey Screen Changes
The Site Survey screen in the phone has been updated to include the following new information:
•The last octet of the MAC address displays for each access point (AP)
•The SSID for the associated AP is at the bottom of the screen
•The Details screen displays the host name for each AP
Access the Site Survey screen by choosing Menu > Network Config > Site Survey.
For more information about the Site Survey screen, refer to the "Verifying the Wireless Network Configuration on the Cisco Unified Wireless IP Phone" in the Cisco Unified Wireless IP Phone 7920 Administration Guide.
Cisco 7920 Configuration Utility Changes
The Cisco 7920 Configuration Utility, Release 3.0 supports the new features in Cisco Unified Wireless IP Phone 7920 firmware release 3.0.
This section provides information about using the Cisco Unified Wireless IP Phone 7920 with Cisco Unified CallManager 5.0, 4.2, 4.1, 4.0, 3.3(4), and later:
Installing the New Firmware Image
Before using the Cisco Unified Wireless IP Phone 7920 with Cisco Unified CallManager, you must install the version 3.0 firmware image on all Cisco Unified CallManager systems that run TFTP service. To load the version 3.0 firmware image for the Cisco Unified Wireless IP Phone 7920, follow these steps:
Note To make the new features available to Cisco Unified Wireless IP Phone 7920 users, you must upgrade your Cisco Unified CallManager system with the latest DevPack patch for your release of Cisco Unified CallManager. You can download the latest DevPack patch with the new CSV and XML schema at this URL:
Step 1 Go to this URL:
Step 2 Click one of the following hyperlinks, and follow the prompts to download the firmware:
•For Cisco Unified CallManager release 4.2 and earlier:
•For Cisco Unified CallManager release 5.0 and later:
Step 3 Go back to the URL shown in Step 1, click the following hyperlink and follow the prompts to download the Readme file, which contains installation instructions for the corresponding firmware:
cmterm-7920-sccp-3-0.Readme.htm—For Cisco Unified CallManager 4.2 and earlier and Cisco Unified CallManager 5.0
Step 4 Follow the instructions in the Readme file to install the firmware.
Note•To downgrade firmware to version 1.09 or earlier, you must use the Cisco 7920 Configuration Utility to perform the downgrade.
•If the phone firmware is earlier than version 1.03 or the phone is configured in Cisco Unified CallManager as an IP Phone 7960 (releases prior to 3.3(3)SR1), you also need the os7920.txt file which is installed with the firmware.
Using the Cisco Unified Wireless IP Phone 7920 with Cisco Unified CallManager Express
If you are using the Cisco Unified Wireless IP Phone 7920 with Cisco Unified CallManager Express 3.1 or later, you can download the version 3.0 firmware image file cmterm_7920.4.0-03-00.bin from the software download center at the following URL:
Note•Cisco CME versions 3.1 and later support the Cisco 7920 phone type and do not require the phone load image helper file.
•If the phone firmware is earlier than version 1.03 or the phone is configured in Cisco Unified CallManager Express as an IP Phone 7960 (releases prior to 3.1) you also need the os7920.txt file. You can create this file by using a text editor such as Notepad. Create a new file with the name, os7920.txt and enter the firmware image name: cmterm_7920.4.0-03-00.
To install the version 3.0 firmware with Cisco Unified CallManager Express, you must manually copy the firmware image file cmterm_7920_4.0-03-00.bin to the Cisco Unified CallManager Express TFTP server (router flash) and enable it for TFTP. Update the 7920 load name to cmterm_7920.4.0-03-00.
For information about this procedure, refer to the "Setting Up Phones" chapter in the Cisco Unified CallManager Express Administration Guide for your version of Cisco CME at this URL:
This section provides general information about using and supporting the Cisco Unified Wireless IP Phone 7920 in your system.
Reducing the Holdoff Time for TKIP Countermeasure Mode
The Cisco Unified Wireless IP Phone 7920 may transmit a message integrity check (MIC) error to the access point when using TKIP. If the access point receives two MIC errors within 60 seconds, then the access point enters Countermeasure mode in which all associated TKIP clients are de-authenticated for the duration of the Countermeasure Holdoff time.
You can reduce the Holdoff time for TKIP Countermeasure mode to less than 60 seconds (the default value) on the access point.
Use this command on your access point configuration:Interface dot11radio 0Countermeasure tkip hold-time seconds
where seconds is the holdoff time. Suggested values are from 0 to 3.
Regulatory Domains for Cisco Unified Wireless IP Phone 7920
Be aware that you can use a Cisco Unified Wireless IP Phone 7920 only within the region in which it is purchased. The Cisco Unified Wireless IP Phone 7920 might not function properly in another region. The Cisco Unified Wireless IP Phone 7920 is manufactured and sold for specific regulatory domains. These domains, such as North America and Japan, have regulations that control the radio frequency (RF) channels and transmission power that are available for wireless phones.
You can determine the regulatory domain for your phone by accessing the Domain menu from Phone Settings. Choose Menu > Phone Settings > Phone Status > Domain. A check mark displays next to one of these settings as shown in Table 1.
Table 1 Supported Regulatory Domains
Regulatory Domain Number Geographic Region
North America, Australia, New Zealand
Asian and Pacific
Cisco Unified CallManager Unit License
You need a Cisco Unified CallManager unit license for each Cisco Unified Wireless IP Phone 7920. Depending on the bundle that you order, you might need to order a license. For more information, refer to Cisco Unified Wireless IP Phone 7920 Data sheet at this URL:
Supported Access Points
The Cisco Unified Wireless IP Phone 7920 supports Cisco Aironet Access Points (APs) that can run Cisco IOS in autonomous mode and APs that run in lightweight mode with lightweight access point protocol (LWAPP) and using a wireless LAN controller. Table 2 lists the supported AP models and their operation mode in the WLAN.
Wi-Fi compliant APs that are manufactured by third-party vendors should function with the Cisco Unified Wireless IP Phone 7920, but might not support key features such as Dynamic Transmit Power Control (DTPC), ARP-caching, LEAP/EAP-FAST, or QBSS.
This section provides information about the following:
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://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.
Step 2 Log on with your Cisco.com user ID and password.
Step 3 Click the Launch Bug Toolkit hyperlink.
Step 4 To look for information about a specific problem, enter the bug ID number in the "Enter known bug ID" field and click Search.
Table 3 describes the problems that are known to exist in the firmware release 3.0 for the Cisco Unified Wireless IP Phone 7920.
Table 4 lists the resolved problems in firmware release 3.0 for the Cisco Unified Wireless IP Phone 7920.
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