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Cisco Unified Wireless IP Phone 7921G Release Notes for Firmware Version 1.2(1)

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Cisco Unified Wireless IP Phone 7921G Release Notes for Firmware Version 1.2(1)

Table Of Contents

Cisco Unified Wireless IP Phone 7921G Release Notes for Firmware Version 1.2(1)

Contents

Related Documentation

New and Changed Information

Installation Notes

Installing Firmware Release 1.2(1) on Cisco Unified Communications Manager

Minimum Firmware Requirement

Firmware Installation Procedure

Installing Firmware Release 1.2(1) on Cisco Unified Communications Manager Express

Installing the Cisco Unified Wireless IP Phone 7921G Configuration Utility Software Package using the Wavelink Avalanche Server Console

Cisco Unified Wireless IP Phone 7921G Configuration Utility Requirement for Wavelink Server

Important Notes

EAP-TLS and PEAP Support

USB Connection Disabled After Powering Off/On the Phone (CSCse26110)

Auto 802.11a Preferred Over 802.11b/g (Dual Band) Mode

Use in Healthcare Environments

Unplugging the Headset from the Phone

Online Help for the Cisco Unified Wireless IP Phone 7921G

Cisco Unified Communications Manager 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

Supported Access Points

Configuring Cisco Lightweight Access Points with EAP-FAST

Battery Reading Calibration

Caveats

Using Bug Toolkit

Open Caveats

Resolved Caveats

Obtaining Documentation and Submitting a Service Request


Cisco Unified Wireless IP Phone 7921G Release Notes for Firmware Version 1.2(1)


August 12, 2008

Use these Release Notes with the Cisco Unified Wireless IP Phone 7921G running with Cisco Unified Communications Manager Versions 7.0, 6.1, 6.0, 5.1, 4.3, 4.2, and 4.1.

Contents

These release notes provide the following information:

Related Documentation

New and Changed Information

Installation Notes

Important Notes

Caveats

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

New and Changed Information

The Cisco Unified Wireless IP Phone 7921G firmware release 1.2(1) supports new and enhanced features, including the following:

Server certificate authentication for PEAP (MS-CHAPv2)

User-installed certificate requirements for EAP-TLS

Standby scanning

Restricted data rates

XSI enhancements for IPICS (IP Interoperability and Collaboration System)

CSV format support for local Phone Book

Cisco Discovery Protocol (CDP) configurable in Cisco Unified Communications Manager Administration (instead of on the Cisco Unified Wireless IP Phone)

Advertise G-722 codec support configurable in Cisco Unified Communications Manager Administration

Out-of-range alert on the phone

Application button enhancements

Automatic power off upon connecting to an AC power source

Keypad unlock enhancement

Line View configurable as the home screen

Increased last number redial entries to 99

Elimination of alert tone (beep) when battery is fully charged

Additional options for controlling ring volume and enabling speakerphone

Removal of the Intercom History menu

The phone also supports features that will be available on Cisco Unified Communications Manager 7.0 or later, including the following:

Busy Lamp Field (BLF) enhancements

International call logging ("+" symbol support)

Do Not Disturb (DND) Reject

For more information, see the following phone documentation that will be available when Cisco Unified Communications Manager 7.0 is released:

Cisco Unified Wireless IP Phone 7921G Phone Guide for Cisco Unified Communications Manager 7.0

Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified Communications Manager 7.0

Installation Notes

This section contains these topics:

Installing Firmware Release 1.2(1) on Cisco Unified Communications Manager

Installing Firmware Release 1.2(1) on Cisco Unified Communications Manager Express

Installing the Cisco Unified Wireless IP Phone 7921G Configuration Utility Software Package using the Wavelink Avalanche Server Console

Installing Firmware Release 1.2(1) on Cisco Unified Communications Manager

This section describes how to install firmware release 1.2(1) on Cisco Unified Communications Manager.


Caution If you update the Cisco Unified Communications Manager release, it could potentially cause a downgrade of the firmware release for wireless IP phones. Local Phone Book records might be erased with a firmware downgrade. If the firmware release to which the phones have downgraded does not support the current WLAN authentication scheme (such as EAP-TLS or PEAP), the phones will lose connectivity to the network. For more information, see EAP-TLS and PEAP Support.

Minimum Firmware Requirement

The new Cisco Unified Wireless IP Phone 7921G requires firmware release 1.0(4) or later. You cannot downgrade to a firmware release earlier than 1.0(4) on phones with the following part numbers:

74-4953-04

74-4954-04

74-4955-04

74-4956-04


Note To see the part number, first remove the battery. Look for the phone part number on the body of the phone. Do not use the part number on the battery.


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.1-2-1-Readme.html) that is posted with the firmware version 1.2(1) for more information.

To download and install the firmware, follow these steps:

Procedure


Step 1 To access the firmware files, go to this URL:

http://tools.cisco.com/support/downloads/pub/Redirect.x?mdfid=278875240

Step 2 On that website, click one of these hyperlinks, and follow the prompts to download the firmware:

For Cisco Unified Communications Manager release 4.3 and earlier:
cmterm-7921-sccp.1-2-1.exe

For Cisco Unified Communications Manager release 5.1 and later:
cmterm-7921-sccp.1-2-1.cop.sgn

For image upgrade via USB:
CP7921G-1.2.1.TAR

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-7921-sccp.1-2-1-Readme.html—Readme file for the Cisco Unified Wireless IP Phone 7921G—Firmware Version 1.2(1).

Step 4 Follow the instructions in the Readme file to install the firmware.



Note The call history is preserved only when upgrading or downgrading within 1.0(x) firmware releases or upgrading from firmware release 1.1(1) to 1.2(1). The call history will be erased for all other upgrade or downgrade conditions.


Installing Firmware Release 1.2(1) on Cisco Unified Communications Manager Express

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 1.2(1) firmware image file from the software download center.

To install the firmware, follow these steps:

Procedure


Step 1 To access the firmware files, go to this URL:

http://tools.cisco.com/support/downloads/pub/Redirect.x?mdfid=278875240

Step 2 On the web page, click this hyperlink, and follow the prompts to download the firmware image:

CP7921G-1.2.1.TAR

Step 3 Extract these files from the TAR image, manually copy them to Cisco Unified Communications Manager Express TFTP server (router flash), and enable them for TFTP:

APPS-1.2.1.sbn

GUI-1.2.1.sbn

SYS-1.2.1.sbn

TNUX-1.2.1.sbn

TNUXR-1.2.1.sbn

WLAN-1.2.1.sbn

CP7921G-1.2.1.LOADS

Step 4 For the 7921G device type, set the load type to CP7921G-1.2.1.LOADS


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:

http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_installation_and_configuration_guides_list.html

Installing the Cisco Unified Wireless IP Phone 7921G Configuration Utility Software Package using the Wavelink Avalanche Server Console

To install the Cisco Wireless IP Phone 7921G Configuration utility, follow these steps:


Step 1 To access the file, go to this URL:

http://tools.cisco.com/support/downloads/pub/Redirect.x?mdfid=278875240

Step 2 Download the 7921CU-1.2.1.AVA file to a host that is accessible to the Avalanche Console.

Step 3 Launch the Avalanche Console and connect to an Avalanche agent.

Step 4 Select Software Management > Installing Software Package from the menu.

Step 5 Enter the path for the AVA file.

Step 6 Click New, and enter the AVA file name.

Step 7 Follow the instructions on the screen to complete the installation.


Cisco Unified Wireless IP Phone 7921G Configuration Utility Requirement for Wavelink Server

For firmware release 1.2(1), Cisco Unified Wireless IP Phone 7921G Configuration Utility (7921CU) version 1.2(1) is required for using the Wavelink Avalanche server to configure the phone. The configuration file template created by the earlier version of the 7921CU.ava files will not work and must be uninstalled before installing 7921CU.ava version 1.2(1).

Important Notes

This section provides general information about using and supporting the Cisco Unified Wireless IP Phone 7921G in your system:

EAP-TLS and PEAP Support

USB Connection Disabled After Powering Off/On the Phone (CSCse26110)

Auto 802.11a Preferred Over 802.11b/g (Dual Band) Mode

Use in Healthcare Environments

Unplugging the Headset from the Phone

Online Help for the Cisco Unified Wireless IP Phone 7921G

Cisco Unified Communications Manager 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

Supported Access Points

Configuring Cisco Lightweight Access Points with EAP-FAST

EAP-TLS and PEAP Support

Cisco Unified Wireless IP Phone 7921G firmware version 1.1(1) and later supports advanced wireless security features such as EAP-TLS and PEAP. If you use EAP-TLS or PEAP for authentication, it is highly recommended that you do not downgrade the firmware because the authentication settings will not be valid on firmware releases prior to 1.1(1) and the phones will lose connectivity to the network.


Note Firmware release 1.2(1) supports PEAP with the server validation option.



Note A downgrade attempt to a firmware release earlier than 1.1(1) will be blocked if a current enabled profile is configured for EAP-TLS or PEAP.


If you must downgrade the firmware, you need to disable any network profiles that use EAP-TLS and PEAP.

If you upgrade to firmware version 1.2(1) again after a downgrade, reconfigure the EAP-TLS and PEAP settings, including any user installed certificates required for authentication.

USB Connection Disabled After Powering Off/On the Phone (CSCse26110)

If you power off the Cisco Unified Wireless IP Phone 7921G with the USB cable connected and then power it on again, the USB connection might fail.

To enable the USB connection, unplug the USB cable from the phone and then plug it back in.

Auto 802.11a Preferred Over 802.11b/g (Dual Band) Mode

If you configured the 802.11 mode (in Network Profile) as Auto 802.11a preferred over 802.11b/g (dual band), the preferred band (if available) will be used at power-on, but the phone may switch to the less preferred 2.4 GHz band (if available) and the preferred band is lost. Once the phone has connected to the less preferred band, it will not scan for the preferred band if the current band is acceptable, and may remain connected to the less preferred band.

Use in Healthcare Environments

This product is not a medical device and uses an unlicensed frequency band that is susceptible to interference from other devices or equipment.

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 Communications Manager 5.1 or later. 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 Communications Manager, a message states that the online help feature is not available.

Cisco Unified Communications Manager Password Feature and TFTP Encryption

If you are running Cisco Unified Communications Manager 5.1 or later, you must set the password in Cisco Unified Communications Manager Administration on the Phone Configuration window. The password set in Cisco Unified Communications Manager takes precedence over the password that is set on the Cisco Unified Wireless IP Phone 7921G web pages.


Caution When setting the Administration Password in the Product Specific Configuration section in Cisco Unified Communications Manager 5.1 Administration, you must enable TFTP encryption. Otherwise, the password appears in readable text in the phone configuration file and can be viewed from any host that has access to TFTP server.

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 Access the web page for the phone. Refer to the "Accessing the Web Page for a Phone" section in the 7921G Administration Guide.

Step 2 Choose the network profile that you want to configure.

Step 3 Click the Advanced Profile link at the top of the page.

Step 4 In the TSPEC Setting area, change the Minimum PHY Rate to a supported rate, such as 11 Mbps.

Step 5 Click Save to make the change.


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

Geographic Region
Regulatory Domain Number
CP-7921 Model

North America

1050

CP-7921G-A-K9

Europe (ETSI)

3051

CP-7921G-E-K9

Japan

4157

CP-7921G-P-K9

World mode including Australia/New Zealand, Asia, and Pacific

5252

CP-7921G-W-K9



Note When deploying the Cisco Unified Wireless IP Phone 7921G with World regulatory domain (CP-7921G-W-K9), you must enable the access points for world mode (802.11d). The world model phone gets the channels and power information from the access point.


For more information about supported regulatory domains, go to the Wireless LAN Compliance Status page at this URL:

http://www.cisco.com/application/pdf/en/us/guest/products/ps5861/c1650/cdccont_0900aecd80537b6a.pdf

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 Voice over the wireless LAN (VoWLAN) does not currently support MESH technology such as Cisco Aironet 1500 Series Lightweight Outdoor Mesh Access Points.


Table 2 lists the supported AP models and their operation mode in the WLAN

.

Table 2 Supported Access Points and Modes

Access Point Models
Autonomous Mode
Lightweight Mode

Cisco Aironet AP 350 Series

Yes

No

Cisco 500 Series

Yes

Yes

Cisco Aironet AP 1100 Series

Yes

Yes

Cisco Aironet AP 1130 Series

Yes

Yes

Cisco Aironet AP 1200 Series

Yes

Yes

Cisco Aironet AP 1240 Series

Yes

Yes

Cisco Aironet AP 1250 Series

Yes

Yes

Cisco Aironet AP 1300 Series

Yes

Yes

Cisco 1000 Series Lightweight AP

No

Yes



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 Wi-Fi MultiMedia (WMM), Unscheduled Auto Power Save Delivery (U-APSD), Traffic Specification (TSPEC), QoS Basic Service Set (QBSS), Dynamic Transmit Power Control (DTPC), or proxy ARP.

Configuring Cisco Lightweight Access Points with EAP-FAST

If you are using EAP-FAST with the Cisco Unified Wireless LAN Controller, 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 Use SSH or Telnet to access the Cisco Unified Wireless LAN Controller.

Step 2 Enter config advanced eap request-timeout 20.

Step 3 Enter save config.

Step 4 Enter y to confirm.


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 Once the Cisco Unified Wireless IP Phone 7921G is upgraded to firmware release 1.0(3), it cannot be downgraded to earlier versions.


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 Press the RED key to turn off the power on the Cisco Unified Wireless IP Phone 7921G.

Step 2 Plug in an AC adaptor to the IP Phone.

Step 3 The automatic battery reading calibration will complete within one minute after the charging LED on the phone turns solid green.



Note To confirm the IP Phone has been calibrated for battery reading, choose Settings Menu > Status Menu > Firmware Version Menu. The Boot Load ID field under the Firmware Version Menu indicates the IP Phone has been calibrated. If the Boot Load ID ends with *, the IP Phone has not been calibrated. (For example, BL-P202-E995FCF0* is a non-calibrated IP Phone; BL-P202-E995FCF0 is a calibrated IP Phone.)


Caveats

This section contains these topics:

Using Bug Toolkit

Open Caveats

Resolved Caveats

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:

Internet connection

Web browser

Cisco.com user ID and password

To use the Software Bug Toolkit, follow these steps:

Procedure


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.

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 1.2(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 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.

Table 3 Open Caveats for the Cisco Unified Wireless IP Phone 7921G for Firmware Release 1.2(1) 

Identifier
Headline and Bug Toolkit Link

CSCsq18351

DSP restarts when user continuously initiates and ends a barge session

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsq18351

CSCsr42447

Cisco Unified Wireless IP Phone has one-way audio due to no `Networkdown' event to SCCP when switching profiles

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsr42447


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 1.2(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 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.

Table 4 Resolved Caveats for the Cisco Unified Wireless IP Phone 7921G for Firmware Release 1.2(1) 

Identifier
Headline and Bug Toolkit Link

CSCsm43102

Cisco Unified Wireless IP Phone 7921G does not turn on speakerphone during Cisco Unified Communications Manager Express (CME) unicast page

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm43102

CSCsm54409

Multicast Real-Time Transport Protocol (RTP) sent via XML script is not played if on a call

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm54409

CSCsm61264

`TransVM' softkey does not work

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm61264

CSCsm73828

Large field in beacon causes continuous erroneous message and locks up Cisco Unified Wireless IP Phone 7921G

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm73828

CSCsm88691

Cisco Unified Wireless IP Phone 7921G incorrectly focuses when picking up call parked from a trunk on Cisco Unified Communications Manager Express (CME)

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm88691

CSCsm94058

Contact name is corrupted with unicode display

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm94058

CSCso01361

Offhook and onhook on Cisco Unified Wireless IP Phone 7921G CME trunk causes no dial tone and voice

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCso01361

CSCso08254

Cisco Unified Wireless IP Phone 7921G is disrupted with a Common Gateway Interface (CGI) call with invalid authenticated URL

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCso08254

CSCso28500

Cisco Unified Wireless IP Phone 7921G disappears from the CDP neighbor list

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCso28500

CSCso83890

Cisco Unified Wireless IP Phone 7921G authentication URL is not sent properly when using Proxy Server URL

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCso83890

CSCsq15115

Subsequent `CiscoIPPhoneExecute'command is sent with priority2 execute instead of busy

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsq15115

CSCsq52820

Cisco Unified Wireless IP Phone 7921G sometimes fails to sort the best candidate access points (AP) in the correct order

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsq52820

CSCsq57422

Cisco Unified Wireless IP Phone does not play keypad tone if call is answered with keypad locked

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsq57422

CSCsq92057

Cisco Unified Wireless IP Phone 7921G keeps opening and closing ingress channel of the same socket number

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsq92057

CSCsr56069

Cisco Unified Wireless IP Phone 7921G reboots if XML push (Unity Message Monitor) is received while on a call

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsr56069


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.


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