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Table Of Contents
Cisco Unified Wireless IP Phone 7921G Release Notes for Firmware Version 1.0(5)
Installing Firmware Release 1.0(5) on Cisco Unified Communications Manager
Firmware Installation Procedure
Installing Firmware Release 1.0(5) on Cisco Unified Communications Manager Express 4.1
Use in Healthcare Environments
Unplugging the Headset from the Phone
Online Help for the Cisco Unified Wireless IP Phone 7921G
Cisco Unified CallManager Password Feature and TFTP Encryption
Adjusting the PHY Rate When Using 802.11b and Call Admission Control
System Log Trace Files Can Impact Voice Quality
Regulatory Domains for Cisco Unified Wireless IP Phone 7921G
Configuring Cisco Airespace Access Points with EAP-FAST
Voice Quality Deteriorates While Roaming
Obtaining Documentation and Submitting a Service Request
Cisco Unified Wireless IP Phone 7921G Release Notes for Firmware Version 1.0(5)
Updated January 2008
Use these Release Notes with the Cisco Unified Wireless IP Phone 7921G running with Cisco Unified Communications Manager Versions 6.0, 5.1, 5.0, 4.3, 4.2, 4.1, and earlier.
Contents
These release notes provide the following information:
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Obtaining Documentation and Submitting a Service Request
Related Documentation
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:
http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_products_support_series_home.html
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:
http://www.cisco.com/en/US/products/sw/voicesw/ps556/tsd_products_support_series_home.html
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:
http://www.cisco.com/en/US/products/ps7273/tsd_products_support_series_home.html
Installation Notes
This section contains these topics:
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Installing Firmware Release 1.0(5) on Cisco Unified Communications Manager
This section describes how to install firmware release 1.0(5) on Cisco Unified Communications Manager.
Note
Firmware Installation Procedure
Before using the Cisco Unified Wireless IP Phone 7921G with Cisco Unified Communications Manager, you must install the latest firmware on all Cisco Unified Communications Manager servers in the cluster.
Before You Begin
To make the Cisco Unified Wireless IP Phone 7921G available in the Cisco Unified Communications Manager system, you might need to upgrade your system with the latest DevPack patch for your release of Cisco Unified Communications Manager. Check the Readme file (cmterm-7921-sccp.1-0-5-Readme.htm) that is posted with the firmware version 1.0(5) for more information.
To download and install the firmware, follow these steps:
Procedure
Step 1
http://tools.cisco.com/support/downloads/pub/Redirect.x?mdfid=278875240
Step 2
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cmterm-7921-sccp.1-0-5.exe•
cmterm-7921-sccp.1-0-5.cop•
cmterm-7921-sccp.1-0-5.cop.sgn•
CP7921G-1.0.5.TARStep 3
cmterm-7921-sccp.1-0-5-Readme.htm—Readme file for the Cisco Unified Wireless IP Phone 7921G—Firmware Version 1.0(5).
Step 4
Installing Firmware Release 1.0(5) on Cisco Unified Communications Manager Express 4.1
The Cisco Unified Wireless IP Phone 7921G is only supported with Cisco Unified Communications Manager Express 4.1 or later. You must download the Cisco Unified Wireless IP Phone 7921G version 1.0(5) firmware image file from the software download center.
To install the firmware, follow these steps:
Procedure
Step 1
http://tools.cisco.com/support/downloads/pub/Redirect.x?mdfid=278875240
Step 2
CP7921G-1.0.5.TAR
Step 3
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Step 4
For more information about this procedure, refer to the "Installing and Upgrading Cisco Unified CME Software" chapter in the Cisco Unified Communications Manager Express System Administrator Guide at this URL:
Important Notes
This section provides general information about using and supporting the Cisco Unified Wireless IP Phone 7921G in your system:
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Use in Healthcare Environments
This product is not a medical device and may use an unlicensed frequency band that is susceptible to interference from other devices or equipment.
Minimum Firmware Requirement
The new Cisco Unified Wireless IP Phone 7921G (part number 74-4953-02 Rev A1) requires firmware release 1.0(4) or later. You cannot downgrade to a firmware release earlier than 1.0(4) on the new phones.
Unplugging the Headset from the Phone
If the headset plug is removed slowly while a call is active, the call may be disconnected. To avoid an unexpected call drop, disconnect the call before unplugging the headset.
Online Help for the Cisco Unified Wireless IP Phone 7921G
Online help for the Cisco Unified Wireless IP Phone 7921G is available only for systems with Cisco Unified CallManager 4.2(3) or Cisco Unified CallManager 5.1. Users can access online help by pressing the center navigation button from the main phone screen.
When users access online help for earlier releases of Cisco Unified CallManager, a message states that the online help feature is not available.
Cisco Unified CallManager Password Feature and TFTP Encryption
If you are running Cisco Unified CallManager 5.1 or later, you must set the password in Cisco Unified CallManager Administration on the Phone Configuration page. The password set in Cisco Unified CallManager takes precedence over the password that is set on the Cisco Unified Wireless IP Phone 7921G web pages.
Caution
Adjusting the PHY Rate When Using 802.11b and Call Admission Control
If your wireless LAN has access points that use 802.11b and you plan to use Call Admission Control (CAC) with TSPEC, then you must modify the PHY rate to a supported rate for your 802.11b access points.
To modify the PHY rate on the phone web page, follow these steps:
Procedure
Step 1
Step 2
Step 3
Step 4
Step 5
System Log Trace Files Can Impact Voice Quality
Voice quality can be impaired when you set system log trace files for higher debug levels. Set only the modules that are required when capturing trace files for a phone.
Regulatory Domains for Cisco Unified Wireless IP Phone 7921G
You can use a Cisco Unified Wireless IP Phone 7921G only within the region in which it is purchased. The Cisco Unified Wireless IP Phone 7921G might not function properly in another region, because it is manufactured and sold for specific regulatory domains. For example, 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 Settings > Model Information > WLAN Regulatory Domain.
Table 1 shows the supported regulatory domains.
Table 1 Supported Regulatory Domains
1050
North America
3051
Europe (ETSI)
4157
Japan
5252
World mode including Australia/New Zealand, Asia, and Pacific
Note
For more information about supported regulatory domains, go to the Wireless LAN Compliance Status page at this URL:
Supported Access Points
When deploying voice over the wireless LAN, ensure the autonomous access points have Cisco IOS Version 12.3(8)JEA or later, and controllers have version 4.0 or later.
The Cisco Unified Wireless IP Phone 7921G uses Cisco Aironet Access Points (APs) that support Cisco IOS in autonomous mode and APs in lightweight mode with lightweight access point protocol (LWAPP) that use a wireless LAN controller.
Note
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 support the Cisco Unified Wireless IP Phone 7921G, but might not support key features such as Dynamic Transmit Power Control (DTPC), ARP-caching, LEAP/EAP-FAST, or QBSS.Configuring Cisco Airespace Access Points with EAP-FAST
If you are using EAP-FAST with Cisco Airespace technology, you must increase the EAP request (802.1x) timeout to a minimum of 20 seconds to enable the phone to receive the PAC credentials successfully.
To change the EAP request timeout, follow these steps:
Procedure
Step 1
Step 2
Step 3
Step 4
Battery Reading Calibration
Firmware release 1.0(3) provides a new mechanism to provide accurate battery reading by incorporating information collected by battery reading calibration at production.
Note
Firmware release 1.0(3) provides an automatic battery reading calibration mechanism when IP Phones are not calibrated for battery reading at production and the user experiences short battery life,
To calibrate the Cisco Unified Wireless IP Phone 7921G battery, follow these steps:
Procedure
Step 1
Step 2
Step 3
Note
Caveats
This section contains these topics:
Using Bug Toolkit
Known problems (bugs) are graded according to severity level. These release notes contain descriptions of:
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You can search for problems by using the Cisco Software Bug Toolkit.
To access Bug Toolkit, you need the following items:
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To use the Software Bug Toolkit, follow these steps:
Procedure
Step 1
Step 2
To look for information about a specific problem, enter the bug ID number in the "Search for bug ID" field, then click Go.
Open Caveats
Table 3 lists Severity 1, 2, and 3 defects that are open for the Cisco Unified Wireless IP Phone 7921G using firmware release 1.0(5).
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 3 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.
Resolved Caveats
Table 4 lists Severity 1, 2, and 3 defects that are resolved for the Cisco Unified Wireless IP Phone 7921G using firmware release 1.0(5).
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 4 reflects a snapshot of the defects that were resolved at the time this report was compiled. For an updated view of resolved defects, access Bug Toolkit as described in the "Using Bug Toolkit" section.
Documentation Updates
The following text replaces the "Voice Quality Deteriorates While Roaming" subsection under the "Symptom: The Wireless IP Phone Does Not Roam Properly" section in Chapter 9, "Troubleshooting the Cisco Unified Wireless IP Phone 7921G" of the Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco CallManager Release 4.1, 4.2, 5.0 and Later.
Voice Quality Deteriorates While Roaming
Check the RSSI on the destination access point to see if the signal strength is adequate. The next access point should have an RSSI value of -67 dBm or greater.
Check the site survey to determine if the channel overlap is adequate for the phone and the access point to hand off the call to the next access point before the signal is lost from the previous access point.
Check to see if noise or interference in the coverage area is too great.
Check that signal to noise ratio (SNR) levels are 25 db or higher for acceptable voice quality.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.
Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.
© 2008 Cisco Systems, Inc. All rights reserved.
