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Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G Release Notes for Firmware Release 8.3(4)SR1 (SCCP and SIP)

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Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G Release Notes for Firmware Release 8.3(4)SR1 (SCCP and SIP)

Table Of Contents

Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G Release Notes for Firmware Release 8.3(4)SR1 (SCCP and SIP)

Contents

Related Documentation

Installation Notes

Installing Firmware Release 8.3(4)SR1 for SCCP

Cisco Unified IP Phone Expansion Module 7914

Firmware Installation Procedure for SCCP

Installing Firmware Release 8.3(4)SR1 for SIP

Firmware Installation Procedure for SIP

Important Notes

Cisco Catalyst Port Security and LLDP-MED

Intercom History Option Removal

Cisco Unified IP Phone Displays XML Error with Extension Mobility

Daisy Chaining Cisco Unified IP Phones

Support for 2008 Australia Summertime Change

Caveats

Using Bug Toolkit

Open Caveats

Open SCCP Caveats

Open SCCP and SIP Caveats

Open SIP Caveats

Resolved Caveats

Resolved SCCP Caveats

Resolved SCCP and SIP Caveats

Resolved SIP Caveats

Documentation Updates

Obtaining Documentation and Submitting a Service Request


Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G Release Notes for Firmware Release 8.3(4)SR1 (SCCP and SIP)


Updated May, 2008

Use these release notes with a Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G or 7942G running SCCP or SIP firmware release 8.3(4)SR1.

The SCCP version of firmware release 8.3(4)SR1 is compatible with Cisco Unified Communications Manager releases 6.1, 6.0, 5.1,4.3, 4.2, and 4.1.

The SIP version of firmware release 8.3(4)SR1 is compatible with Cisco Unified Communications Manager releases 6.1, 6.0, and 5.1.


Note SIP firmware release 8.3(4)SR1 is designed and tested to interoperate with Cisco call control, most notably Cisco Unified Communications Manager release 6.1. Although SIP firmware is IETF RFC 3261 compliant, it is not supported by Cisco TAC or Engineering for use with non-Cisco call control systems.


Contents

These release notes provide the following information. You might need to notify your users about some of the information provided in this document.

Related Documentation

Installation Notes

Important Notes

Caveats

Documentation Updates

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:

Installing Firmware Release 8.3(4)SR1 for SCCP

Installing Firmware Release 8.3(4)SR1 for SIP

Installing Firmware Release 8.3(4)SR1 for SCCP

This section describes how to install firmware release 8.3(4)SR1 for SCCP.

Cisco Unified IP Phone Expansion Module 7914

If you are using the Cisco Unified IP Phone Expansion Module 7914, you must upgrade the expansion module to firmware release S00105000300 before using the phone to support relevant 8.3(4)SR1 features on your expansion module.


Note The 7975G, 7965G, and 7962G IP phones support the Cisco Unified IP Phone Expansion Module 7914. You can add a maximum of two Expansion Modules to these IP phones.


To download and install the firmware, follow these steps:

Procedure


Step 1 Go to the following URL:

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

Step 2 To download the firmware for Cisco Unified IP Phone Expansion Module 7914, click one of the following hyperlinks and follow the prompts:

For Cisco Unified Communications Manager 4.3 and earlier:

cmterm-7914-sccp.5-0-3.exe

For Cisco Unified Communications Manager 5.1 and later:

cmterm-7914-sccp.5-0-3.cop

Step 3 Go back to the URL shown in Step 1, double-click the following hyperlink, and follow the prompts to download the Readme file, which contains installation instructions for the corresponding firmware:

cmterm-7914-sccp.5-0-3-readme.htm


Firmware Installation Procedure for SCCP

Before using the Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G or 7942G with Cisco Unified Communications Manager release 5.1 or later, 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:

Procedure


Step 1 Go to the following URL:

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

Step 2 To download the firmware for Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G, or 7942G click one of the following hyperlinks and follow the prompts:

For Cisco Unified Communications Manager 4.3, 4.2, and 4.1:

Cisco Unified IP Phone 7975G:
cmterm-7975-sccp.8-3-4sr1.exe

Cisco Unified IP Phone 7965 and 7945G:
cmterm-7945_7965-sccp.8-3-4sr1.exe

Cisco Unified IP Phone 7962 and 7942:
cmterm-7942_7962-sccp.8-3-4sr1.exe

For Cisco Unified Communications Manager 5.1(1b) and later:

Cisco Unified IP Phone 7975G:
cmterm-7975-sccp.8-3-4sr1.cop.sgn

Cisco Unified IP Phone 7965 and 7945G:
cmterm-7945_7965-sccp.8-3-4sr1.cop.sgn

Cisco Unified IP Phone 7962 and 7942:
cmterm-7942_7962-sccp.8-3-4sr1.cop.sgn


Note Unified CM versions 5.1(1) and later require signed cop files.


Step 3 Go back to the URL shown in Step 1, double-click the following hyperlink, and follow the prompts to download the Readme file, which contains installation instructions for the corresponding firmware:

Cisco Unified IP Phone 7975G:
cmterm-7975-sccp.8-3-4sr1-readme.htm

Cisco Unified IP Phone 7965 and 7945G:
cmterm-7942_7962-sccp.8-3-4sr1-readme.htm

Cisco Unified IP Phone 7962 and 7942:
cmterm-7945_7965-sccp.8-3-4sr1-readme.htm

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


Installing Firmware Release 8.3(4)SR1 for SIP

This section describes how to install firmware release 8.3(4)SR1 for SIP. The SIP version is compatible with Cisco Unified Communications Manager releases 6.1, 6.0, and 5.1.

Firmware Installation Procedure for SIP

Before using the Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G or 7942G with Cisco Unified Communications Manager 5.1 or later, 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:

Procedure


Step 1 Go to the following URL:

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

Step 2 Double-click the following hyperlink, and follow the prompts to download the appropriate firmware for the phone model:

Cisco Unified IP Phone 7975G:
cmterm-7975-sip.8-3-4sr1.cop.sgn

Cisco Unified IP Phone 7965 and 7945G:
cmterm-7945_7965-sip.8-3-4sr1.cop.sgn

Cisco Unified IP Phone 7962 and 7942:
cmterm-7942_7962-sip.8-3-4sr1.cop.sgn


Note Unified CM versions 5.1(1) and later require signed cop files.


Step 3 Go back to the URL shown in Step 1, double-click the following hyperlink, and follow the prompts to download the Readme file, which contains installation instructions for the corresponding firmware:

Cisco Unified IP Phone 7975G:
cmterm-7975-sip.8-3-4sr1-readme.htm

Cisco Unified IP Phone 7965 and 7945G:
cmterm-7942_7962-sip.8-3-4sr1-readme.htm

Cisco Unified IP Phone 7962 and 7942:
cmterm-7945_7965-sip.8-3-4sr1-readme.htm

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


Important Notes

This section contains these topics:

Cisco Catalyst Port Security and LLDP-MED

Intercom History Option Removal

Cisco Unified IP Phone Displays XML Error with Extension Mobility

Daisy Chaining Cisco Unified IP Phones

Support for 2008 Australia Summertime Change

Cisco Catalyst Port Security and LLDP-MED

Cisco Unified IP Phone firmware release 8.3(3) and later, provides support for the LLDP-MED Link Layer protocol. LLDP is a protocol similar to CDP and used for device discovery between a LAN switch and an endpoint. Some Catalyst switches running IOS earlier than 12.2(44)SE, may not support LLDP and indicate that an extra device has been connected to the switch port.

If the Catalyst switch is using Port Security to count the number of devices connected, the appearance of an LLDP packet may cause the port count to increase, and cause the switch to disable the port. Please verify that your Catalyst switch supports LLDP, or increase the port count, before deploying this firmware.

Intercom History Option Removal

The Intercom History option has been removed from the Directories menu on the Cisco Unified IP Phones for firmware release 8.3(4)SR1. For more information, refer to CSCsk99117.

Cisco Unified IP Phone Displays XML Error with Extension Mobility

When you use firmware release 8.3(4)SR1 with Cisco Unified Communications Manager 6.x, you must use Cisco Unified Communications Manager engineering special release. If this is not used, you will receive an XML parse error when you login or logout of a Cisco Unified IP Phone. Contact your Cisco support representative to obtain the engineering special software. For more information, refer to CSCsj79645.

Daisy Chaining Cisco Unified IP Phones

Cisco does not support connecting an IP phone to another IP phone through the PC port. Each IP phone should directly connect to a switch port. If phones are connected together in a line (daisy chaining by using the PC port), the phones will not work.

Support for 2008 Australia Summertime Change

Cisco Unified IP Phone firmware release 8.3(4)SR1 includes support for 2008 Australian Summertime. For more information, refer to CSCsl16521.

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.

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.


Open Caveats

This section contains these topics:

Open SCCP Caveats

Open SCCP and SIP Caveats

Open SIP Caveats

Open SCCP Caveats

Table 1 lists Severity 1, 2 and 3 defects that are open for the Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G using the SCCP version of firmware release 8.3(4)SR1.

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 1 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 1 Open SCCP Caveats for the Cisco Unified IP Phone
7975G, 7965G, 7945G, 7962G and 7942G for Firmware Release 8.3(4)SR1 

Identifier
Headline and Bug Toolkit

CSCsl94138

Java exception during SCCP Cisco Unified IP Phone fallback from SRST

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsl94138


Open SCCP and SIP Caveats

Table 2 lists Severity 1, 2 and 3 defects that are open for the Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G using the SCCP and SIP versions of firmware release 8.3(4)SR1.

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 and SIP Caveats for the Cisco Unified IP Phone
7975G, 7965G, 7945G, 7962G and 7942G for Firmware Release 8.3(4)SR1 

Identifier
Headline and Bug Toolkit Link

CSCsj14759

Incorrect display of input Arabic and English letters

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsj14759

CSCsj41419

In Arabic locale, the Cisco Unified IP Phone displays character 'i' the same as 'l'

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsj41419

CSCsk12361

Noise Reduction (NR) causes TTY tone distortion

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk12361

CSCsk30259

iDivert causes call to hang up when Cisco Unity is down

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk30259

CSCsk46461

Using the Barge feature, EndCall can not revert to idle state

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk46461

CSCsk70015

Intercom does not get cleared properly by SIP during call preserve

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk70015

CSCsk99881

Extensible Markup Language (XML) parse error on firmware release 8.3(2)

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk99881

CSCsl75154

Placed call does not have Alerting Name when selecting translation pattern

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsl751541

CSCsm13939

Second line gets focus when Busy Lamp Field (BLF) with button is pressed

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm13939

CSCsm27527

RTPRx command handling is incorrect

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm27527

CSCsm27770

Cisco Unified IP Phone displays `???' when post `EditDial' XML object

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm27770

CSCsm30998

Cisco Unified IP Phone 7965 freezes after logging in and out of Extension Mobility (EM) twice

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm30998

CSCsm35985

Active Barge or cBarge line context does not cover other context

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm35985

CSCsm47516

'PC port Disabled' error is displayed in Arabic

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm47516

CSCsm49188

Cisco Unified IP Phone responds with `Success' response when IP Phone has not executed the request

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm49188

CSCsm51731

Quickly pressing ? gets help content in English but not in local language

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm51731

CSCsm54499

Cisco Unified IP Phone can not display all numbers

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm54499

CSCsm67458

Inconsistent neighbor information from Link Layer Discovery Protocol (LLDP) and Cisco Discovery Protocol (CDP)

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm67458

CSCsm70272

Cisco Unified IP Phone cannot interpret URL

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm70272

CSCsm72109

Contrast menu is not disabled with no Cisco Unified IP Phone Expansion Module present

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm72109


Open SIP Caveats

Table 3 lists Severity 1, 2 and 3 defects that are open for the Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G using the SIP version of firmware release 8.3(4)SR1.

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 SIP Caveats for the Cisco Unified IP Phone
7975G, 7965G, 7945G, 7962G and 7942G for Firmware Release 8.3(4)SR1 

Identifier
Headline and Bug Toolkit Link

CSCsk17275

Cisco Unified IP Phone 7965 resets several times under TCP tool attack

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk17275

CSCsk18033

Cisco Unified IP Phone (SIP) does not fallback from secondary Cisco Unified Communications Manager server after receiving `404' message

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsk18033


Resolved Caveats

This section contains these topics:

Resolved SCCP Caveats

Resolved SCCP and SIP Caveats

Resolved SIP Caveats

Resolved SCCP Caveats

There are no resolved SCCP caveats for firmware release 8.3(4)SR1.

Resolved SCCP and SIP Caveats

Table 4 lists Severity 1, 2 and 3 defects that are resolved for the Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G using the SCCP and SIP versions of firmware release 8.3(4)SR1.

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 SCCP and SIP Caveats for the Cisco Unified IP Phone
7975G, 7965G, 7945G, 7962G and 7942G for Firmware Release 8.3(4)SR1 

Identifier
Headline

CSCsh34483

Cisco Unified IP Phone exhibits kernel bugtraps in various forms

CSCsi31712

With silence suppression enabled, host sends SID frame with incorrect value of `0'

CSCsj13288

Cisco Unified IP Phone in Arabic locale should not display URL from bottom to top

CSCsj14759

Cisco Unified IP Phone incorrectly displays input Arabic and English letters

CSCsj60548

RTPRx volume parameter will change volume of held call when resumed

CSCsj94189

Parameter mismatch in function call `adjustPcmVolume()'

CSCsk19512

Null pointer exceptions are seen during failover and fallback tests

CSCsk44213

Incoming call does not change the focus to answer status when idle URL works

CSCsk45762

Cisco Unified IP Phone handset echo

CSCsk53370

The Dial softkey of transferred conference record is not always display as grey

CSCsk68168

Line label to window bridge is missing

CSCsk72827

`Remote in Use' user interface difference breaks the automation

CSCsk79626

User interface has second line of Caller ID missing the bottom half for Cisco Unified IP Phone

CSCsk83168

Cisco Unified IP Phone is stuck in repetitive distorted speakerphone noise condition

CSCsk84125

Cisco Unified IP Phone online help for Japanese locale truncates some pages

CSCsk91651

Cisco Unified Communications Manager Express (CME) system message ending with partial unicode causes IP Phone not to work

CSCsl32296

Cisco Unified Video Advantage (CUVA) has no video; TCP session to Cisco Audio Session Tunneling (CAST) does not reset when Extension Mobility (EM) login or logout

CSCsl33042

Cisco Unified IP Phone running Cisco Interoperability and Collaboration System (IPICS) multicast application changes to Voice Activity Detection (VAD)

CSCsl37865

Cisco Unified IP Phone is stuck on "updating locale" when upgrading from firmware release 8.2(2)

CSCsl46387

Cisco Unified IP Phone gives up prematurely on `HTTP POST' authentication attempt

CSCsl52227

Cisco Unified IP Phone validation of XML URL tags should be changed

CSCsl54857

Cisco Video Telephony Advantage (CVTA) connection to Cisco Unified IP Phone takes longer time in firmware release 8.3(3)

CSCsl68189

802.1X re-authorization breaks Cisco Unified IP Phone connectivity in firmware release 8.3(3)

CSCsl76090

Busy Lamp Field (BLF) audible alert tone with Cisco Unified IP Phone idle is not played clearly

CSCsm09357

Cisco Unified IP Phone does not send untagged packets after Cisco Discovery Protocol (CDP) timeout

CSCsm16299

Voice VLAN enabled is always 'No' in Cisco Unified IP Phone setting menu

CSCsm32477

After upgrade, link state is not detected and Extensible Authentication Protocol over LAN (EAPOL) logoff is not sent

CSCsm37201

Not able to exit Corporate Directory when incoming call arrives


Resolved SIP Caveats

Table 5 lists Severity 1, 2 and 3 defects that are resolved for the Cisco Unified IP Phone 7975G, 7965G, 7945G, 7962G and 7942G using the SIP version of firmware release 8.3(4)SR1.

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 5 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 5 Resolved SIP Caveats for the Cisco Unified IP Phone
7975G, 7965G, 7945G, 7962G and 7942G for Firmware Release 8.3(4)SR1  

Identifier
Headline

CSCsk01478

Call is put on hold while transferring a parked call in a scenario

CSCsk12364

Automate FTS application to import subsystem data for fcX renumber builds

CSCsk86731

Cisco Unified IP Phone SIP has one-way voice with talkback feature when RTCP is enabled

CSCsl27640

Malformed XML message from Cisco Unified IP Phone to CME for Do Not Disturb (DND) update

CSCsl63427

Denial of Service (DoS) attack by repeated incomplete invitees


Documentation Updates

The following update applies to the "Connecting Your Phone" chapter in the phone administration guide:

For information about wireless headsets that work in conjunction with the wireless headset remote hookswitch control feature, got to the following URL: http://www.cisco.com/pcgi-bin/ctdp/Search.pl

1. Choose IP Communications from the Enter Solution drop-down list box. The Select a Solution Category drop-down list box displays.

2. Choose IP Phone Headsets to see a list of Technology Development Program partners.

If you want to search for a particular Technology Development Program partner, enter the partner's name in the Enter Company Name box.


Note Although this release supports the headset remote hookswitch control feature, the manufacturer's hardware will be listed on this site only after their certification is completed.


The following update applies to the "Setting Up the Cisco Unified IP Phone" chapter under the Connecting Your Phone section in the phone administration guide:

The wireless headset remote hookswitch control feature allows you to use a wireless headset with the Cisco Unified IP Phone. Refer to the wireless headset documentation for information about connecting the headset and using the features.

The following update applies to the "Setting Up the Cisco Unified IP Phone" following the Disabling a Headset section:

Enabling a Wireless Headset

By default, the wireless headset remote hookswitch control feature is disabled. You can enable it through the Cisco Unified Communications Manager Administration application. To do so, choose Device > Phone and locate the phone you want to modify. In the Phone Configuration window for the phone, select Enable for the Headset Hookswitch Control option.

On the phone, you can verify that the feature is enabled by choosing Settings > Device Configuration > Media Configuration, and verifying that the Headset Hookswitch Control setting displays Enabled.

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.