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Cisco Unified IP Phone 7900 Series

Cisco Wireless IP Phone 7920 Release Notes for Firmware Release 1.08 for Cisco CallManager Versions 3.3 and 4.0

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Table Of Contents

Cisco Wireless IP Phone 7920 Release Notes for Firmware Release 1.08

Using the Cisco Wireless IP Phone 7920 with Cisco CallManager 3.3(3) Service Release 1 and Later

Installing the Firmware Image 1.08 with Cisco CallManager 3.3(3) Service Release 1 and Later

Using the Cisco Wireless IP Phone 7920 with Cisco CallManager Express 3.0

Support for the Cisco 7920 Phone Type

Re-registering the Phone Using the Cisco 7920 Phone Type

Support for Special Loud Ring Tones

Using the Cisco Wireless IP Phone 7920 with
Cisco CallManager Versions Prior to Release 3.3(3) Service Release 1

Installing the Firmware Image with Cisco CallManager Versions Prior to Release 3.3(3) Service Release 1

Using Auto-Registration in Cisco CallManager Releases Prior to Release 3.3(3)SR1

Regulatory Domains for Cisco Wireless IP Phone 7920

Features Not Supported

Known and Resolved Problems

Known Problems

Resolved Problems

Additional Information

Cisco CallManager Unit License

Related Documentation

Obtaining Documentation

Cisco.com

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco TAC Website

Opening a TAC Case

TAC Case Priority Definitions

Obtaining Additional Publications and Information


Cisco Wireless IP Phone 7920 Release Notes for Firmware Release 1.08


For Cisco CallManager Versions 4.1, 4.0, and 3.3

October, 2004

The Cisco Wireless IP Phone 7920 firmware release 1.08 provides improvements to audio quality on calls, roaming capability for the wireless IP phones, and reduces phone restart occurrences for the user. This firmware image has been field tested prior to its release. For more information about problems that are resolved with this firmware release, see the "Resolved Problems" section.

Use these release notes with the firmware release1.08 running on Cisco CallManager Release 3.3, 4.0, and 4.1.

These release notes provide the following information:

Using the Cisco Wireless IP Phone 7920 with Cisco CallManager 3.3(3) Service Release 1 and Later

Using the Cisco Wireless IP Phone 7920 with Cisco CallManager Versions Prior to Release 3.3(3) Service Release 1

Known and Resolved Problems

Additional Information

Related Documentation

Obtaining Technical Assistance

Obtaining Additional Publications and Information

Using the Cisco Wireless IP Phone 7920 with Cisco CallManager 3.3(3) Service Release 1 and Later

This section provides information about using the Cisco Wireless IP Phone 7920 with Cisco CallManager 3.3(3) Service Release 1 (SR1) and later. The following topics are included:

Installing the Firmware Image 1.08 with Cisco CallManager 3.3(3) Service Release 1 and Later

Using the Cisco Wireless IP Phone 7920 with Cisco CallManager Express 3.0

Support for the Cisco 7920 Phone Type

Re-registering the Phone Using the Cisco 7920 Phone Type

Support for Special Loud Ring Tones

Installing the Firmware Image 1.08 with Cisco CallManager 3.3(3) Service Release 1 and Later

Use this procedure to load the version 1.08 firmware image for the Cisco Wireless IP Phone 7920 on Cisco CallManager 3.3(3) SR1 and later. You must install the firmware image on all Cisco CallManager systems that run TFTP service.

Procedure


Step 1 Download the firmware installation file cmterm-7920-sccp.1-0-8.exe from CCO at the following URL:

http://www.cisco.com/pcgi-bin/tablebuild.pl/ip-7900ser-crypto

Step 2 Double-click the .exe file to install the necessary firmware files in Cisco CallManager.

The version 1.08 firmware image file and load ID file for the Cisco Wireless IP Phone 7920 are copied into the Cisco CallManager TFTPPath directory.

Step 3 Log in to the Cisco CallManager Administration application.

Step 4 From the menu bar, choose System > Device Defaults.

The Device Defaults Configuration window appears.

Step 5 Scroll down on the page to Cisco 7920 in the Device Type column. In the Load Information window, enter the firmware image file name:

cmterm_7920.4.0-01-08

This updates the firmware load information field.

Step 6 Click the Update button.


Note Do not change any of the parameters of the firmware image file.




Caution If you need to downgrade the firmware to an earlier version, you must use the Cisco 7920 Configuration Utility to perform the downgrade. When downgrading firmware, the phone configuration entries are lost and the phone resets to factory defaults. You must reconfigure the phone with the Cisco 7920 Configuration Utility or by using the Network Config menu on the phone.

Using the Cisco Wireless IP Phone 7920 with Cisco CallManager Express 3.0

If you are using the Cisco Wireless IP Phone 7920 with Cisco CallManager Express (CME) 3.0, you can download the version 1.08 firmware image file cmterm_7920.4.0-01-08.bin and the phone load image helper file os7920.txt from Cisco.com at the following URL:

http://www.cisco.com/pcgi-bin/tablebuild.pl/ip-iostsp

Support for the Cisco Wireless IP Phone 7920 with Cisco CallManager Express is limited, and specific caveats apply.

Caveats

You must assign the Cisco 7960 phone type to the Cisco Wireless IP Phone 7920 when using Cisco CallManager Express 3.0.

To install the version 1.08 firmware with Cisco CallManager Express 3.0, you must manually copy the firmware image file cmterm_7920.4.0-01-08.bin and the phone load image helper file os7920.txt to the Cisco CallManager Express TFTP server (router flash).

The Cisco Wireless IP Phone 7920 version 1.08 firmware image does not provide support for the following Cisco CallManager Express 3.0 features:

Intercom

Paging

Conferencing between lines.


Caution After you upgrade the wireless IP phones to version 1.08 firmware, if you need to downgrade to an earlier firmware version, you must use the Cisco 7920 Configuration Utility to do so. The phone is reset to factory defaults and loses the configuration entries.

Support for the Cisco 7920 Phone Type

Cisco CallManager release 3.3(3) SR1 and later includes support for the Cisco 7920 phone type in the Cisco CallManager Administration application. (Previously, there was no phone type for this phone and you had to configure it as a Cisco IP Phone 7960.)

If you upgrade to Cisco CallManager release 3.3(3) SR1 and later, you can choose the Cisco 7920 phone type when adding the wireless phone. However, if you perform the upgrade and have Cisco wireless phones on your network that were previously configured as Cisco IP Phone 7960s, you will need to remove those entries from the Cisco CallManager database and assign the Cisco 7920 phone type to these phones. See the "Re-registering the Phone Using the Cisco 7920 Phone Type" section for details.

If you use auto-registration to register the Cisco Wireless IP Phone 7920 with Cisco CallManager 3.3 released prior to 3.3(3) SR1, you need to make the configuration files on the phone available to the Cisco CallManager so the phone can be registered with the Cisco 7920 phone type. See the "Using Auto-Registration in Cisco CallManager Releases Prior to Release 3.3(3)SR1" section for details.

Re-registering the Phone Using the Cisco 7920 Phone Type

If you upgrade to Cisco CallManager version 3.3(3) SR1 and later, and have Cisco wireless IP phones on your network that were previously configured as Cisco IP Phone 7960s, you will need to remove those entries from the Cisco CallManager database and assign the Cisco 7920 phone type to the Cisco wireless IP phones as follows:

Procedure


Step 1 Log in to the Cisco CallManager Administration application.

Step 2 From the menu bar, choose System > Cisco CallManager.

The Cisco CallManager Configuration window appears.

Step 3 Choose Device > Phones.

Step 4 Choose the records that match your Cisco Wireless IP Phone 7920s.

Step 5 Click Delete to delete the records.

All Cisco Wireless IP Phone 7920s will be deleted from the Cisco CallManager database.

Step 6 In the Cisco CallManager Configuration window, choose Device > Add a New Device.

Step 7 The Add a New Device window appears.

Step 8 Select Phone from the Device Type drop-down menu and click Next.

The Add a New Phone window appears.

Step 9 Select the Cisco 7920 phone type from the drop-down menu and click Next.

The Phone Configuration window appears.

Step 10 In the Phone Configuration window, enter information in the following fields:

MAC Address

Domain Name assoicated with this MAC Address

Step 11 Click Insert.

The Cisco CallManager Administration application asks if you want to assign a directory number.

Step 12 Enter the required fields.


Support for Special Loud Ring Tones

The Cisco Wireless IP Phone 7920 running on Cisco CallManager Release 3.3(3) SR 1 or later provides support for special loud ring tones. The loud ring tones play at 136 dBA after being initially played at 125 dBA for four seconds; these are intended for use in noisy customer environments that require louder ring tones.

Use this procedure to load the loud ring tones on the Cisco Wireless IP Phone 7920.

Procedure


Step 1 Download the loud ring tones zip file and Readme file from Cisco.com at this URL:

http://www.cisco.com/pcgi-bin/tablebuild.pl/ip-7900ser-crypto.

Step 2 Extract the ring tone files to your hard disk.

Step 3 To stop the TFTP service, from Cisco CallManager Administration, choose Applications > Serviceability> Tools > Control Center. Right-click Cisco TFTP and click Stop .

Step 4 If not already done, upgrade the Cisco Wireless IP Phone 7920 to the version 1.08 firmware image file cmterm_7920.4.0-01-08.bin. See the "Installing the Firmware Image 1.08 with Cisco CallManager 3.3(3) Service Release 1 and Later" section for additional information.

Step 5 Back up your current ringlist.xml file because the new ringlist.xml file might not include all of your ring tones.

Step 6 Copy the special loud ring tone files (loudxxx.raw) and the associated ringlist.xml file into the C:\program files\Cisco\TFTPPath directory on the Cisco CallManager server.


Note You must copy the ring tone files. If you move the files, they do not inherit the correct permissions and the ring tones will not be accessible.


Step 7 To restart the Cisco TFTP server, choose Applications > Serviceability> Tools > Control Center. Right-click Cisco TFTP and click Restart

Step 8 Power on the Cisco Wireless IP Phone 7920. The loud ring tones (loudxxx.raw) should now be available for downloading on the phone.

Step 9 To download and select a loud ring tone as the current ring tone, choose Menu > Phone Settings > Ring Tones > Download Ring Tone. Scroll to and select the desired loud ring tone. A check mark appears by the active ring tone.

Step 10 From the Cisco Wireless IP Phone 7920, choose Menu > Profiles to adjust the ring volume.


Note Make sure the ring volume is turned up to the maximum setting. Alternatively, you can choose the "Outdoors" profile, which is configured for the maximum volume setting.


For additional information about setting the ring volume on the phone, refer to the "Setting the Ring Volume for a Profile" section of Chapter 6, "Configuring Profiles and Phone Settings," in the Cisco Wireless IP Phone 7920 User Guide.


Using the Cisco Wireless IP Phone 7920 with
Cisco CallManager Versions Prior to Release 3.3(3) Service Release 1

This section provides information about using the Cisco Wireless IP Phone 7920 with Cisco CallManager versions prior to release 3.3(3) SR1. The following topics are included:

Installing the Firmware Image with Cisco CallManager Versions Prior to Release 3.3(3) Service Release 1

Using Auto-Registration in Cisco CallManager Releases Prior to Release 3.3(3)SR1

Installing the Firmware Image with Cisco CallManager Versions Prior to Release 3.3(3) Service Release 1

Use the procedure in the "Installing the Firmware Image 1.08 with Cisco CallManager 3.3(3) Service Release 1 and Later" section to load and update the firmware image with Cisco CallManager versions prior to release 3.3(3) SR1.

Cisco CallManager versions prior to release 3.3(3) SR1 do not support the Cisco 7920 phone type.


Note When you update the firmware image for the Cisco Wireless IP Phone 7920 in Cisco CallManager versions prior to release 3.3(3) SR1, you must assign the Cisco IP Phone 7960 phone type to the Cisco Wireless IP Phone 7920 when adding the phone through the Cisco CallManager Administration application.


Using Auto-Registration in Cisco CallManager Releases Prior to Release 3.3(3)SR1

If you use auto-registration to register the Cisco Wireless IP Phone 7920 with Cisco CallManager 3.3 released prior to 3.3(3) SR1, you need to make the configuration files on the phone available to the Cisco CallManager so the phone can be registered with the Cisco 7960 phone type. If the configuration files are not available, the Cisco CallManager cannot auto-register the phone.

Use this procedure to enable the configuration files for Cisco CallManager releases prior to 3.3(3) SR1.

Procedure


Step 1 Log in to the Cisco CallManager Administration application.

Step 2 From the menu bar, choose Service > Service Parameters.

The Service Parameters Configuration page appears.

Step 3 In the Service drop-down list box, choose Cisco TFTP.

Step 4 Click the Advanced button.

Step 5 Scroll down on the page to Clusterwide parameters (Parameters that apply to all servers), and set the Enable Caching of Configuration Files parameter to False.

Step 6 Click the Update button.



Note After you upgrade the wireless IP phones to version 1.08 firmware, if you need to downgrade to version 1.07 firmware, you must use the Cisco 7920 Configuration Utility to do so.


Regulatory Domains for Cisco Wireless IP Phone 7920

Be aware that you can use a Cisco Wireless IP Phone 7920 only within the region in which it is purchased. The Cisco Wireless IP Phone 7920 will not function properly in another region. The Cisco Wireless IP Phone 7920 is manufactured for and sold in specific regulatory domains. These domains, such as North America and Japan, have regulations that control the radio frequency (RF) channels that are available for wireless phones.

Features Not Supported

The Cisco Wireless IP Phone 7920 firmware release 1.0(8) is compatible with Cisco CallManager Release  4.0(1) and later and Release 4.1(2), but the phones do not support the new phone features that are available with these Cisco CallManager releases.

The Cisco Wireless IP Phone 7920 does not support the following features that are available on the Cisco CallManager Release 3.3(3) SR1 and later:

Extension Mobility

CallBack Busy

Quality Reporting Tool

Cisco IPMA

Known and Resolved Problems

Known problems (bugs) are graded according to severity level. These release notes contain descriptions of the following problems:

All severity level-1 or -2 bugs.

Significant severity level-3 bugs.

All customer-found bugs (regardless of severity level).

You can search for problems by using the Cisco Software Bug Toolkit. To access the Software Bug Toolkit, perform the following procedure:


Step 1 Log in to Cisco.com.

Step 2 Choose Service & Support > Technical Support Help—Cisco TAC > Tool Index.

Step 3 In the Jump to: links at the top of the page, click the letter S; then choose Software Bug Toolkit.


You can also access the Software Bug Toolkit by entering the following URL in your web browser:

http://www.cisco.com/pcgi-bin/Support/Bugtool/home.pl

Known Problems

Table 1 lists the known problems in the Cisco Wireless IP Phone 7920 firmware release 1.08.

Table 1 Known Problems 

DDTS Number
Summary

CSCea71698

CSCef38819

"Forwarded to" and "Missed calls" messages do not show on the phone screen when the message, "You have voice mail" displays.

Workaround: Clear voice mail messages to see other display messages.

CSCee42313

Some duration fields show wrong information.

Workaround: None

CSCee42505

The Cisco Wireless IP Phone 7920 does not follow the duration field advertised in CTS frames. The audio might be choppy and broken in networks that use CTS frames to request medium contention. When using WLSE with the radio management feature or when the Cisco Wireless IP Phone 7920 is transmitting on a network with 802.11g clients and APs, broken audio might occur.

Workaround: Disable the radio management feature in WLSE.

CSCee52107

When another IP phone shares a line with the Cisco Wireless IP Phone 7920 and has a call in progress, sometimes the Cisco Wireless IP Phone 7920 displays "Your current options" instead of "In use remotely."

Workaround: None

CSCee64723

When a Cisco IP Phone 7960 is connected to the Cisco Wireless IP Phone 7920, there can be gaps in the voice stream because the IP Phone7920 does not send an RTP packet for 10 seconds.

Workaround: None

CSCee86921

Occasionally a Cisco Wireless IP Phone 7920 that is connected to another Cisco Wireless IP Phone 7920 experiences a restart in stress situations. The phone call drops, but the phones are fully functional after the restart.

Workaround: Place the call to the other party again.

CSCee89249

Sometimes the Cisco Wireless IP Phone 7920 cannot end an incoming call or end a call to a busy party by using the End/Power On button.

Workaround: Use the EndCall softkey instead.

CSCef50881

In some cases, the Cisco Wireless IP Phone 7920 USB port becomes unresponsive and cannot be used.

Workaround: Restart the wireless IP Phone to use the USB port.

CSCef58646

When the Cisco Wireless IP Phone 7920 has two active calls and one call disconnects, the display does not show that a call is holding on another line and the Resume softkey does not appear.

Workaround: Press the arrow key to scroll to the line with the held call and the appropriate softkeys display.

CSCef64581

When the user attempts to answer a second ringing call on the Cisco Wireless IP Phone 7920 and the call forwards to the voice-messaging system, the user cannot resume the first call.

Workaround: None


Resolved Problems

Table 2 lists the problems that have been resolved since the last release.

Table 2 Resolved Problems 

DDTS Number
Summary

CSCeb51052

When the Cisco Wireless IP Phone 7920 user receives a ringing call and presses the End Call button twice, the display shows the message "temporary failure" or "no Network/no AP found." The phone reregisters to Cisco CallManager after pressing the disconnect button three times.

CSCed01562

You can hear static noise on the Cisco Wireless IP Phone 7920 when the phone is using a-law companding.

CSCed17972

The Cisco Wireless IP Phone 7920 does not ring but displays an incoming call after using the Cisco 7920 Configuration Utility. If you use the 7920 Configuration Utility to configure a phone, and neglect to set a ring tone for the phone, the phone does not ring when receiving a call.

CSCed20080

The Cisco Wireless IP Phone 7920 drops its connection to another 7920 after 72 hours, and displays the message "No Network" on the phone.

CSCed36887

In rare situations, the Cisco Wireless IP Phone 7920 might reboot every 24 hours if the phone is installed in an active environment with more than 14 phones.

CSCed48170

Cisco Wireless IP Phone 7920 displays the text for "In Use Remotely" inconsistently.

The Cisco Wireless IP Phone 7920 will display "In Use Remotely" when an inbound call is answered and connected to another phone that is sharing a line with the wireless IP phone. However, if another IP phone with a this shared line appearance places and connects a call, the Cisco Wireless IP Phone 7920 does NOT display "In Use Remotely."

CSCed63462

Sometimes the user needs to press the End Call/Power Off button several times to turn off the phone.

CSCed66094

Cisco Wireless IP Phone 7920 reports that all reset codes are initialized during registration.

CSCed67863

Sometimes a caller on a Cisco Wireless IP Phone 7920 experiences one-way audio because the phone does not respond to an ARP request.

CSCed74454

The Cisco Wireless IP Phone 7920 does not use the short preamble when associating with an AP.

CSCed71282

Cisco Wireless IP Phone 7920 shuts down after several hours when keylock is on and auto answer is set.

CSCed75957

The Cisco Wireless IP Phone 7920 sends its acknowledge (ACK) message frames late causing delays in connections.

CSCed89986

The access point (AP) can send some signaling frames while the Cisco Wireless
IP Phone 7920 is in power save mode. Because the Listen Interval is incorrectly set to zero, the access point (AP) expects that the Cisco Wireless IP Phone 7920 can wake up to receive all signals.

CSCed90750

A user can see the message "Connecting to CallManager" and the spinning wheel symbol indefinitely on the display of the Cisco Wireless IP Phone 7920.

CSCed90902

Sometimes the Cisco Wireless IP Phone 7920 can reboot unexpectedly. This situation results from the ScanTask locking up and causing the WatchDog service to trigger the Cisco Wireless IP Phone 7920 to reboot.

CSCed93775

After powering on, some Cisco Wireless IP Phone 7920s use the same LEAP challenge which can be a security weakness. Other Cisco Wireless IP Phone 7920s use a different first LEAP challenge and subsequent challenges are not the same.

CSCed95031

Callers talking to Cisco Wireless IP Phone 7920 users may experience choppy audio resulting from 200-300 msec gaps in RF scanning.

CSCee07034

The user gets the LEAP password prompt when EAP reauthentication timeout is enabled on the AP.

CSCee09313

The Cisco Wireless IP Phone 7920 occasionally enters the wrong authentication state during a LEAP authentication. As a result, multiple LEAP authenticating sessions are opened. LEAP authentication fails because either the wireless phone or the AP get confused.

CSCee10580

Cisco Wireless IP Phone 7920 failed to register with Cisco CallManager showing "Registering to CallManager 0" on its display.

CSCee14663

If the Cisco Wireless IP Phone 7920 is in fallback mode to an SRST gateway and the phone resets, it might not register back to the SRST gateway. The phone does not cache network configuration settings such as the IP addresses for the TFTP server and Cisco CallManager.

CSCee14713

Occasionally, the AP that is associated to the phone suddenly disappears and audio is lost for a few moments. If no other AP with better signal or QBSS is available, roaming is not triggered for a few seconds.

CSCee16721

When an AP drops it s association with a Cisco Wireless IP Phone 7920, the wireless phone keeps trying to connect or authenticate to the same AP.

CSCee22410

The Cisco Wireless IP Phone 7920 fails to function after registering with Cisco CallManager because of a broken TCP socket.

CSCee25723

In heavy traffic on the AP, the Cisco Wireless IP Phone 7920 experiences packet jitter that causes choppy audio.

CSCee25749

In heavy traffic on the AP, the Cisco Wireless IP Phone 7920 does not receive all the voice packets which causes choppy audio.

CSCee31327

Cisco Wireless IP Phone 7920 users might get one-way communication when there is a transmit power mismatch. The Cisco Wireless IP Phone 7920 cannot automatically adjust the transmit power to match the transmit power from the AP.

CSCee31531

Multi-cast traffic affects the quality of the audio on the Cisco Wireless IP Phone 7920.

CSCee41410

When the Cisco Wireless IP Phone 7920 user toggles between "Hold" and "Resume", the message, "Your Current Options," displays for a split second.

CSCee42990

Sometimes the Cisco Wireless IP Phone 7920 fails to register to Cisco CallManager, but the display shows Authentication Okay.

CSCee56076

The user experiences audio gaps of 1-3 seconds when the Cisco Wireless IP Phone 7920 roams in locations where there is an abrupt loss of RF coverage from an obstruction such as a wall. The abrupt loss does not give the wireless IP Phone the chance to roam to another available AP.

CSCee61276

Receive and Transmit failures between the Cisco Wireless IP Phone 7920 and AP should trigger a hand-off to the next AP.

CSCee63069

Heavy multicast traffic causes the Cisco Wireless IP Phone 7920 phone to restart.

CSCee63798

Cisco IP Phone vendor strings are inconsistent.

CSCee68021

If the Cisco Wireless IP Phone 7920 is connected to another Cisco Wireless
IP Phone 7920, an ARP packet broadcast storm can cause the phone to reboot.

CSCee72923

The Cisco Wireless IP Phone 7920 restarts unexpectedly in the middle of a call.

CSCee74476

In rare circumstances, the Echo Canceller (ECan) in the Cisco Wireless IP Phone 7920, might not initialize properly. The other party might hear echo or loud distortions during the call.

CSCee79951

Cisco Wireless IP Phone 7920s might restart when there is low signal strength. as a result of memory problem.

CSCee81516

When a Cisco Wireless IP Phone 7920 shares a line with another Cisco IP Phone, the softkey labels might become altered after ending a call on the shared line.

CSCee86629

During roaming, ARM1 receives association and authentication messages containing wrong error codes.

CSCee91187

The Cisco Wireless IP Phone 7920 needs to provide device ID information to the AP.

CSCef15970

The Cisco Wireless IP Phone 7920 does not acknowledge messages after waking up in idle mode.

CSCef22788

Sometimes the Cisco Wireless IP Phone 7920 receives a "No Network" message because of a problem with LEAP authentication.

CSCef44452

When you are using the Cisco Wireless IP Phone 7920 Site Survey utility in an area with low signal strength, sometimes a placed call results in one-way audio.

CSCef57638

Sometimes the Cisco Wireless IP Phone 7920 sends the PS-NULL packet after starting to scan a different channel. The wireless IP phone uses more bandwidth, in this instance, due to the AP retransmitting packets.

CSCin69022

All voice traffic is sent between the access point and the Cisco Wireless
IP Phone 7920 at 1 Mbps except for RTP. Although this causes no actual problems, it is inefficient and does no follow the transmission rates that the AP is advertising.

CSCin71761

During a call with a Cisco Wireless IP Phone 7920 and another Cisco IP Phone, there is voice distortion.

CSCin74627

After hanging up an unanswered call, the ring back tone continues to play.

CSCin74628

When dialing a nonexistent directory number, the Cisco Wireless IP Phone 7920 user hears the announcement and busy tone at the same time.

CSCin75120

The Cisco Wireless IP Phone 7920 stays in the TFTP no response state.

CSCin75296

After pressing the End Call softkey when the phone in shared-line state, the display becomes disordered.

CSCin75423

After an incoming call on a shared line on the Cisco Wireless IP Phone 7920, the display becomes disordered.


Additional Information

The following Cisco Wireless IP Phone 7920 documentation has been revised and is available on Cisco.com at URL

http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/english/wip7920/index.htm:

Cisco Wireless IP Phone 7920 Guide—In keeping with other Cisco IP Phone guides, this guide provides task tables that describe how to use features and menu options. This guide is available in English only and ships in the box with the Cisco Wireless IP Phone 7920.

Cisco Wireless IP Phone 7920 Administration Guide—The expanded administration guide includes general information about installing and configuring the Cisco Wireless IP Phone 7920 in the wireless WLAN and the IP telephony network. In addition, the troubleshooting chapter includes extensive troubleshooting scenarios and suggestions.

Cisco Wireless IP Phone 7920 Design and Deployment Guide—This revised and updated document provides design and deployment considerations and guidelines for implementing wireless Cisco IP Telephony solutions based on the Cisco Architecture for Voice, Video, and Integrated Data (AVVID).

Cisco Wireless IP Phone 7920 Accessory Guide—The revised accessory guide includes many corrections and revisions to information and is included in the box with the Cisco Wireless IP Phone 7920.

Cisco CallManager Unit License

A Cisco CallManager unit license for a single Cisco Wireless IP Phone 7920 may be purchased. The part number for the Cisco CallManager unit license is SW-CCM-UL-7920=.

Related Documentation

For more information about the Cisco Wireless IP Phone 7920, refer to the following publications available at URL http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/english/wip7920/index.htm:

Cisco Wireless IP Phone 7920 Guide for Cisco CallManager

Cisco Wireless IP Phone 7920 Accessory Guide

Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager

Regulatory and Compliance Information for the Cisco Wireless IP Phone 7920

Cisco Wireless IP Phone 7920 Design and Deployment Guide

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We appreciate your comments.

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Using the online TAC Case Open Tool is the fastest way to open P3 and P4 cases. (P3 and P4 cases are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Case Open Tool automatically recommends resources for an immediate solution. If your issue is not resolved using the recommended resources, your case will be assigned to a Cisco TAC engineer. The online TAC Case Open Tool is located at this URL:

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To ensure that all cases are reported in a standard format, Cisco has established case priority definitions.

Priority 1 (P1)—Your network is "down" or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Priority 2 (P2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Priority 3 (P3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

Priority 4 (P4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Go to this URL to visit the company store:

http://www.cisco.com/go/marketplace/

The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as ordering and customer support services. Access the Cisco Product Catalog at this URL:

http://cisco.com/univercd/cc/td/doc/pcat/

Cisco Press publishes a wide range of general networking, training and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press online at this URL:

http://www.ciscopress.com

Packet magazine is the Cisco quarterly publication that provides the latest networking trends, technology breakthroughs, and Cisco products and solutions to help industry professionals get the most from their networking investment. Included are networking deployment and troubleshooting tips, configuration examples, customer case studies, tutorials and training, certification information, and links to numerous in-depth online resources. You can access Packet magazine at this URL:

http://www.cisco.com/packet

Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj

Training—Cisco offers world-class networking training. Current offerings in network training are listed at this URL:

http://www.cisco.com/en/US/learning/index.html