Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
Cisco Unified Wireless IP Phone
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Cisco Unified Wireless IP Phone

Contents

Cisco Unified Wireless IP Phone

The Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G provides wireless voice communication over an IP network. As with traditional analog telephones, you can place and receive phone calls and access features such as hold, transfer, and speed dial. In addition, because the phone connects to your wireless local area network (WLAN), you can place and receive phone calls from anywhere in your wireless environment.

For information about the phones and accessories, see the following documents:

  • Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G User Guide
  • Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Accessory Guide

This chapter includes the following sections:

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G

This section describes the phone components.

Cisco Unified Wireless IP Phone 7925G and 7926G

The Cisco Unified Wireless IP Phone 7925G and 7926G are 802.11 dual-band wireless devices that provide comprehensive voice communications in conjunction with Cisco Unified Communications Manager and with Cisco Aironet 802.11b/g and Cisco Aironet 802.11a access points (APs) in a private business communications network.

The phone is a qualified Bluetooth wireless device (Qualified Device ID [QDID] B014396). The phone provides voice communication over the same wireless LAN that your computer uses, allowing you to place and receive phone calls, put calls on hold, transfer calls, make conference calls, and so on.

The following figure shows the Cisco Unified Wireless IP Phone 7925G. The Cisco Unified Wireless IP Phone 7926G looks similar.



This phone model, like other network devices, must be configured and managed. This phone encodes G.711a, G.711u, G.729a, G.729ab, and G.722/iLBC codecs, and decodes G.711a, G711b, G.711u, G.729, G729a, G729b, and G729ab codecs. The phone also supports uncompressed wideband (16 bits, 16 kHz) audio.

The Cisco Unified Wireless IP Phone 7925G and 7926G is hearing aid compatible (HAC) but do not have any TTY features. They have a centered "dot" or "nib" on the 5 key that is a tactile identifier.

The physical characteristics include:

  • Resistance to damage from dropping the phone
  • Tolerance of antibacterial and alcohol-based wipes
  • Latex- and lead-free
  • Resistance against liquid splashes
  • Dust resistance
  • Shockproof and vibration-proof
  • USB 1.1 interface

In addition to basic call-handling features, your phone can provide enhanced productivity features that extend your call-handling capabilities.

Depending on the configuration, your phone supports:

  • Use of Bluetooth wireless headsets, including certain hands-free call features
  • Wireless access to your phone number and the corporate directory
  • A local phone book that can store up to 200 contacts and speed-dial hot keys that can be assigned to phone book contacts
  • Access to network data, XML applications, and web-based services
  • Online customizing of phone features and services from your User Options web pages
  • An online help system that displays information on the phone screen

The Cisco Unified Wireless IP Phone 7926G contains a bar code scanner.

Cisco Unified Wireless IP Phone 7925G-EX

Your Cisco Unified Wireless IP Phone 7925G-EX is an Atmospheres Explosibles (ATEX) Zone 2/Class 22 and Canadian Standards Association (CSA) Division 2/Class 1 certified full-feature telephone. The phone is certified for use in potentially explosive environments in the gas, oil, and chemical production fields as well as dust-filled environments. The phone has Ingress Protection 64 (IP 64) level protection, indicating dust-tight equipment that is protected against splashing water. The phone has an industry-standard yellow styling that offers fast recognition in emergency situations.

The phone is a qualified Bluetooth wireless device (Qualified Device ID [QDID] B014396). The phone provides voice communication over the same wireless LAN that your computer uses, allowing you to place and receive phone calls, put calls on hold, transfer calls, make conference calls, and so on.

The following figure shows the Cisco Unified Wireless IP Phone 7925G-EX.



This phone model, like other network devices, must be configured and managed. This phone encodes G.711a, G.711u, G.729a, G.729ab, and G.722/iLBC codecs, and decodes G.711a, G711b, G.711u, G.729, G729a, G729b, and G729ab codecs. The phone also supports uncompressed wideband (16 bits, 16 kHz) audio.

The Cisco Unified Wireless IP Phone 7925G-EX is hearing aid compatible (HAC) but does not have any TTY features. It also has a centered "dot" or "nib" on the 5 key that is a tactile identifier.

The physical characteristics include:

  • Atmospheres Explosibles (ATEX) Zone 2/Class 22 certification prevents ignition of surrounding gas vapors by the phone.
  • Canadian Standards Association (CSA) Division 2/Class 1 certification provides access to mobile collaborative communications.
  • Industry-standard yellow styling offers fast recognition in emergency situations.
  • Ingress Protection 64 (IP 64) level protection, indicating dust-tight equipment which is protected against splashing water.
  • The large 2-inch color (176 x 220 pixels) display makes viewing easy.
  • Resistance to damage from dropping the phone.
  • Tolerance of antibacterial and alcohol-based wipes.
  • Latex- and lead-free.
  • Shockproof and vibration-proof.
  • USB 1.1 interface.

Note


ATEX Zone 2 certification: Zone 2 is defined as an area in which an explosive gas atmosphere is not likely to occur in normal operation and if it does occur, is likely to do so only infrequently and will exist for a short period only (for example, less than 10 hours per year).



Note


CSA Class 1 Division II certification: Class 1 is a location where a quantity of flammable gas or vapor sufficient to produce an explosive or ignitable mixture may be present in the air. Division II is a location where a classified hazard does not normally exist but is possible under abnormal conditions.


In addition to basic call-handling features, your phone can provide enhanced productivity features that extend your call-handling capabilities.

Depending on the configuration, your phone supports:

  • Use of Bluetooth wireless headsets, including certain hands-free call features
  • Wireless access to your phone number and the corporate directory
  • A local phone book that can store up to 200 contacts and speed-dial hot keys that can be assigned to phone book contacts
  • Access to network data, XML applications, and web-based services
  • Online customizing of phone features and services from your User Options web pages

Buttons and Hardware

The following figure shows the Cisco Unified Wireless IP Phone 7926G. The Cisco Unified Wireless IP Phone 7925G and 7925G-EX are similar in appearance to the Cisco Unified Wireless IP Phone 7926G. The following table describes the functions of the keys on the phones.



1

Indicator light (LED)

Provides these indications:

  • Solid red: Phone is connected to AC power source and battery is charging.
  • Solid green: Phone is connected to AC power source and battery is fully charged.
  • Fast blinking red: There is an incoming call. Phone can be charging or fully charged.
  • Slow blinking red: There is a voice message. When phone is connected to AC power source, the red light displays longer than when using only the battery.
  • Slow blinking green (every 2 seconds): Phone is using only battery power. Phone is registered with the wireless network and is within service coverage area.

2

Headset port with cover

Port for plugging in a headset or ear bud has a protective cover.

3

Speaker button

Toggles the speaker mode on or off for the phone.

4

Right softkey button

Activates the Options menu for access to the list of softkeys. Sometimes displays a softkey label.

5

Navigation button

Accesses these menus and lists from the main screen:

Directory

Line View

Settings

Services

Allows you to scroll up and down menus to highlight options and to move left and right through phone numbers and text entries.

6

Select button

Activates the Help menu from the main screen.

Allows you to select a menu item, a softkey, a call, or an action.

7

Power/End button (red)

Turns the phone on or off, ends a connected call, or silences the ring during an incoming call.

When you use menus, acts as a shortcut to return to the main screen.

8

Pound (#) key

Allows you to lock the keypad.

Allows you to enter these special characters when you are entering text: # ? ( ) [ ] { }

9

Zero (0) key

Enters "0" when you dial a number. Allows you to enter a space or these special characters when you are entering text: , . ‘ “ | _ ~ ’

10

Asterisk (*) key

Toggles between ring and vibrate mode.

Allows you to enter these special characters when you are entering text: * + - / = \ : ;

11

Keypad

Allows you to dial numbers, enter letters, and choose menu items by number.

12

One (1) key

Enters "1" when you dial a number. Allows you to access voice mail.

Allows you to enter these special characters when you are entering text: ! @ < > $ % ^ &

13

Answer/Send button (green)

Allows you to answer a ringing call or, after dialing a number, to place the call.

14

Left softkey button

Activates the softkey option displayed on the screen.

When you set it up, allows you to directly access your messages or open the Phone Book when the phone is idle.

15

Mute button

Toggles the mute feature on or off.

16

Volume button

When the phone is idle, allows you to control the ring volume, turn on the vibrate option, or turn off the ring.

When an incoming call is ringing, allows you to press this button once to silence the ring for the call.

During a call, allows you to control the speaker volume for the handset, headset, and speaker mode.

When the phone is docked in the desktop charger, the volume button on the phone controls the volume of the charger speaker.

17

Application button

Use with XML applications, such as Push to Talk or other services.

18

Bar code scanner

Use with Java MIDlet applications to allow you to scan bar codes.

Note   

Available only on the Cisco Unified Wireless IP Phone 7926G.

Cisco Unified Wireless IP Phone 7925G Desktop Charger Overview

The Cisco Unified Wireless IP Phone 7925G Desktop Charger provides the following features:

  • Charges the docked phone battery from line power
  • Contains a speakerphone, with the volume controlled by the phone volume buttons
  • Supports Bluetooth through the speakerphone
  • Displays status information using the Power/Bluetooth Status LED and Battery LED
  • Contains an additional port at the back of the station for charging a spare battery
  • Works on line power or from the spare battery for the phone

The following figure shows the Cisco Unified Wireless IP Phone 7925G docked in the Cisco Unified Wireless IP Phone 7925G Desktop Charger.

Figure 1. Cisco Unified Wireless IP Phone 7925G docked in the charger

The Cisco Unified Wireless IP Phone 7925G Desktop Charger supports the following phones:

  • Cisco Unified Wireless IP Phone 7925G
  • Cisco Unified Wireless IP Phone 7925G-EX
  • Cisco Unified Wireless IP Phone 7926G

The two LEDs on the Cisco Unified Wireless IP Phone 7925G Desktop Charger change color, as described in the following table.

LED

Color

Flash rate

Meaning

Power/Bluetooth Status

Unlit

Solid

The charger is not plugged into line power.

Green

Solid

The charger is plugged into line power.

Blue

Flashing slowly

Bluetooth is connecting or disconnecting from the charger.

Solid

The charger is connected to the phone using Bluetooth.

Battery

Unlit

Solid

No spare battery is installed.

Red

Solid

The spare battery is charging.

Green

Solid

The spare battery is fully charged.

Amber-yellow

Solid

The station is powered by the spare battery with adequate charge.

Flashing

The station is powered by the spare battery, but the battery is low.

Flashing and dimming slowly

The station is powered by the spare battery, but the battery is rapidly depleting.

The spare battery charges only when the Cisco Unified Wireless IP Phone 7925G Desktop Charger is plugged into line power.

The Cisco Unified Wireless IP Phone 7925G Desktop Charger supports Bluetooth Version 2.1 + Extended Data Rate (EDR) using Hands-free Version 1.5.

The following figure shows the location of the Control button. The Control button is used when pairing the charger with the phone.

Bluetooth technology

The Cisco Unified Wireless IP Phones are full-feature telephones and a qualified Bluetooth wireless devices (Qualified Device ID [QDID] B014396) and provide voice communication over the same wireless LAN that your computer uses. In addition to basic call-handling features, your phone operates with Bluetooth wireless headsets, including certain hands-free call features.

Bluetooth devices operate in the unlicensed Industrial Scientific Medicine (ISM) band of 2.4 GHz, which is the same as the 802.11b/g band. This unlicensed band in most countries includes the frequency range from 2400 to 2483.5 MHz. Bluetooth enables low bandwidth wireless connections within a range of 10 meters. The best performance is in the 1 to 2 meter range. Synchronous voice channels are provided by using circuit switching and asynchronous data channels are provided by using packet switching.

Bluetooth uses integrated Adaptive Frequency Hopping (AFH) to avoid interference. Every 625 microseconds (1/1,000,000 of a second) the channel changes or hops to another frequency within the 2402 to 2480 MHz range. This equals 1600 hops every second.

The Cisco Unified Wireless IP Phones contain a Bluetooth module and 802.11 WLAN module. This coexistence greatly reduces and avoids radio interference between the Bluetooth and 802.11b/g radio.

Bluetooth devices fit into to three different power classes, as shown in the following table.

Table 1 Bluetooth maximum permitted transmit power and range by class

Class

Maximum permitted transmit power (mW, dBm)

Range

Class 1

100 mW, 20 dBm

Up to 100 meters

Class 2

2.5 mW, 4 dBm

Up to 10 meters

Class 3

1 mW, 0 dBm

Up to 1 meter

Bluetooth Class 2.0 with Extended Data Rate (EDR) is a short-range wireless technology that is supported by the Cisco Unified Wireless IP Phones. The phones support the Hands-Free Profile Version 1.5.

Because of potential interference issues, Cisco recommends that you:

  • Use 802.11a that operates in the 5 GHz band.
  • Reduce the proximity of other 802.11b/g devices, Bluetooth devices, microwave ovens, and large metal objects.
  • Use the Cisco Unified Wireless IP Phone on the same side of the body as the Bluetooth-enabled headset.

Caution


Use CSA or ATEX qualified Bluetooth accessories with the Cisco Unified IP Phone 7925G-EX in hazardous environments.


For information about pairing headsets, see Headset usage.

For more information about WLAN configuration and Bluetooth, see Site Survey Verification. Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G User Guide contains user-specific information.

For more information about Bluetooth and hands-free profiles, see http:/​/​www.bluetooth.com.

Hands-Free Profile

Your phone supports certain features of the Hands-free Profile, which is a standard set of features that enable users of handsfree devices (such as Bluetooth wireless headsets) to perform certain tasks without having to handle the phone. For example, instead of pressing Redial on your phone, you can redial a number from your Bluetooth wireless headset according to instructions from the headset manufacturer.


Caution


Use CSA or ATEX qualified bluetooth accessories with the Cisco Unified IP Phone 7925G-EX in hazardous environments.


These hands-free features apply to Bluetooth wireless headsets used with your Cisco Unified Wireless IP Phone:

Redial

Re-calls the last number dialed.

Reject incoming call

Uses the iDivert option to direct the call to voicemail.

Three-way calling

When there is an active call and another incoming call or call on hold, you may choose to handle the calls in one of these ways:

  • End the active call and answer or resume a waiting call.
  • Put the active call on hold and answer or resume a waiting call.

Note


Hands-free devices may differ in how features are activated. Hands-free device manufacturers may also use different terms when referring to the same feature.

For more information on using hands-free features, see the documentation provided by the device manufacturer.


Feature Support

The Cisco Unified Wireless IP Phone functions much like traditional IP phones allowing you to place and receive telephone calls while connected to the wireless LAN. In addition to traditional phone features, the Cisco Unified Wireless IP Phone includes features that enable you to administer and monitor the phone as a network device.


Caution


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


Feature Overview

The Cisco Unified Wireless IP Phone provides traditional telephony functionality, such as call forward and call transfer, call pickup, redial, speed dial, conference calls, and voice message system access, as well as these features:

  • Bluetooth Class 2 technology for headsets that support Bluetooth
  • Six-line appearance
  • Adjustable ring and volume levels
  • Adjustable display brightness and time outs
  • Autodetection of headset and autoanswer from the headset
  • Wireless web access to your phone number and the corporate directory
  • Access to network data, XML applications, and web-based services
  • Online customizing of phone features and services from the User Options web pages
  • An online help system that displays information on the phone screen

Telephony Features

You can use Cisco Unified Communications Manager Administration to set up phone registration criteria and calling search spaces, to configure corporate directories and services, and to modify phone button templates. See Telephony features available and Cisco Unified Communications Manager Administration Guide for additional information.

For more information about the Cisco Unified Communications Manager Administration, see Cisco Unified Communications Manager documentation suite at http:/​/​www.cisco.com/​en/​US/​products/​sw/​voicesw/​ps556/​tsd_​products_​support_​series_​home.html.

You can also use the context-sensitive help available within the application for guidance.

Network Settings

As with other network devices, you must configure wireless IP phones to access Cisco Unified Communications Manager and the rest of the IP network using the wireless LAN. There are two methods for configuring network settings such as DHCP, TFTP, and for configuring wireless settings for the phone.

  • Cisco Unified Wireless IP Phone web pages
  • Network Profiles menu on the Cisco Unified Wireless IP Phone

You access the configuration web pages by using a browser from your PC. You configure network settings on the phone itself.

Because the Cisco Unified Wireless IP Phone is a network device, you can obtain detailed status information about it. This information can assist you in troubleshooting problems that users might encounter when using their IP phones.

Information for End Users

If you are a system administrator, you are the primary source of information for Cisco Unified Wireless IP Phone users in your network or company. To ensure that you distribute the most current feature and procedural information, familiarize yourself with Cisco Unified Wireless IP Phone documentation. Make sure you visit the Cisco Unified IP Phone web site:

http:/​/​www.cisco.com/​en/​US/​products/​hw/​phones/​ps379/​tsd_​products_​support_​maintain_​and_​operate.html

From this site, you can view additional phone documentation.

In addition to providing documentation, it is important to inform users about available Cisco Unified Wireless IP Phone features (including features specific to your company or network) and about how to access and customize those features, if appropriate.

Related Information

Security features

Implementing security in a wireless network protects against data tampering to Cisco Unified Communications Manager data, call signaling, and media stream. It also reduces the chances for identity theft. To reduce the threats, the Cisco wireless LAN (WLAN) provides options for user authentication with servers and for encrypting communications streams between phones and network devices.

For information about supported security options for the Cisco Unified Wireless IP Phone, see Authentication methods.

For information about security features supported by Cisco Unified Communications Manager and Cisco Unified Wireless IP Phones, see Supported security features.

The following table provides additional information about security topics.

Table 2 Security topics

Topic

Reference

Detailed explanation of security, including setup, configuration, and troubleshooting information for Cisco Unified Communications Manager and Cisco Unified IP Phones

See Cisco Unified Communications Manager Security Guide

Security features supported on the Cisco Unified IP Phone

See Supported security features

Restrictions regarding security features

See Security Restrictions

Viewing a security profile name when running Cisco Unified Communications Manager 5.0 or later

See Security Profiles

Identifying phone calls for which security is implemented

See Authenticated, Encrypted, and Protected Phone Calls

Transport Layer Security (TLS) connection

See Network protocols

See Phone Configuration Files and Profile Files

Security and the phone startup process

See Phone startup process

Security and phone configuration files

See Phone Configuration Files and Profile Files

Changing the TFTP Server 1 or TFTP Server 2 option on the phone when security is implemented

See Network Profiles

Items on the Security Configuration menu on the phone

See Display Security Configuration screen

Unlocking the CTL file

See CTL File Screen

Disabling access to phone web pages

See Product-specific fields for Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G

Troubleshooting

See Common Phone Status Messages

See Cisco Unified Communications Manager Security Guide, Troubleshooting chapter

Resetting or restoring the phone

See Reset phone to factory defaults

Supported security features

The following table provides an overview of the security features that the Cisco Unified Wireless IP Phone supports. For more information about these features and about Cisco Unified Communications Manager and Cisco Unified IP Phone security, see Cisco Unified Communications Manager Security Guide.

For information about current security settings on a phone, choose SETTINGS > System Configuration > Security. For more information, see Display Security Configuration screen.


Note


Most security features are available only if a certificate trust list (CTL) is installed on the phone. For more information about the CTL, see "Configuring the Cisco CTL Client" chapter in the Cisco Unified Communications Manager Security Guide.


Table 3 Security features description

Feature

Description

Image authentication

Prevents tampering with the firmware image before it is loaded on a phone by using signed binary files (with the extension.sbn). Tampering with the image causes a phone to fail the authentication process and reject the new image.

Customer-site certificate installation

Authenticates each Cisco Unified IP Phone by using a unique certificate. Phones include a manufacturing installed certificate (MIC), but for additional security, you can specify in Cisco Unified Communications Manager Administration that a certificate be installed by using the Certificate Authority Proxy Function (CAPF). Alternatively, you can install a locally significant certificate (LSC) from the Security Configuration menu on the phone. See Set up phone security certificate for more information.

Device authentication

Occurs between the Cisco Unified Communications Manager server and the phone when each entity accepts the certificate of the other entity. Determines whether a secure connection between the phone and a Cisco Unified Communications Manager should occur, and, if necessary, creates a secure signaling path between the entities using TLS protocol. Cisco Unified Communications Manager will not register phones unless authenticated by the Cisco Unified Communications Manager.

File authentication

Validates digitally signed files that the phone downloads. The phone validates the signature to make sure that file tampering did not occur after the file creation. Files that fail authentication are not written to Flash memory on the phone. The phone rejects such files without further processing.

Signaling Authentication

Uses the TLS protocol to validate that no tampering has occurred to signaling packets during transmission.

Manufacturing installed certificate

Each Cisco Unified IP Phone contains a unique manufacturing installed certificate (MIC), which is used for device authentication. The MIC is a permanent unique proof of identity for the phone, and allows Cisco Unified Communications Manager to authenticate the phone.

Secure Cisco Unified SRST reference

After you configure a Cisco Unified Survivable Remote Site Telephony (SRST) reference for security and then reset the dependent devices in Cisco Unified Communications Manager Administration, the TFTP server adds the SRST certificate to the phone cnf.xml file and sends the file to the phone. A secure phone then uses a TLS connection to interact with the SRST-enabled router.

Media encryption

Uses SRTP to ensure that the media streams between supported devices proves secure and that only the intended device receives and reads the data. Includes creating a media master key pair for the devices, delivering the keys to the devices, and securing the delivery of the keys while the keys are in transport.

Signaling encryption by using TLS

Ensures that all SCCP signaling messages that are sent between the device and the Cisco Unified Communications Manager server are encrypted.

CAPF (Certificate Authority Proxy Function)

Implements parts of the certificate generation procedure that are too processing-intensive for the phone, and it interacts with the phone for key generation and certificate installation. The CAPF can be configured to request certificates from customer-specified certificate authorities on behalf of the phone, or it can be configured to generate certificates locally.

Security profiles

Defines whether the phone is nonsecure, authenticated, or encrypted. See Security Profiles for more information.

Encrypted configuration files

Lets you ensure the privacy of phone configuration files.

Optional disabling of the web server functionality for a phone

You can prevent access to a phone web page, which displays a variety of operational statistics for the phone.

Phone hardening

Additional security options, which you control from Cisco Unified Communications Manager Administration:

  • Disabling Gratuitous ARP (GARP)
  • Disabling access to the Setting menus
  • Disabling access to web pages for a phone
Note   

You can view current settings for the GARP Enabled and Web Access options by looking at the phone’s Device Information menu. For more information, see Display Security Configuration screen.

Security Profiles

A security profile defines whether the phone is nonsecure, authenticated, encrypted, or protected. Every Cisco Unified IP Phone that is supported by Cisco Unified Communications Manager Administration has a security profile. For information about configuring the security profile and applying the profile to the phone, see Cisco Unified Communications Manager Security Guide.


Note


For Cisco Unified Wireless IP Phones using Cisco Unified CallManager 4.3 and later, security is configured on each phone. For more information about configuring security, see Cisco Unified CallManager Security Guide at http:/​/​www.cisco.com/​en/​US/​products/​sw/​voicesw/​ps556/​prod_​maintenance_​guides_​list.html.


To view the security mode that is set for the phone, from the phone screen, choose SETTINGS > Device Information > Security > Security Mode.

Authenticated, Encrypted, and Protected Phone Calls

When security is implemented for a phone, you can identify authenticated or encrypted phone calls by icons on the screen on the phone. You can also determine that the connected phone is secure and protected if a security tone plays at the beginning of the call.

In an authenticated call, all devices participating in the establishment of the call authenticate using Cisco Unified Communications Manager. When an in-progress call is authenticated, the call progress icon to the right of the call duration timer in the phone screen changes to this icon: .

In an encrypted call, all devices participating in the establishment of the call are authenticated by Cisco Unified Communications Manager. In addition, call signaling and media streams are encrypted. An encrypted call offers a high level of security, providing integrity and privacy to the call. When an in-progress call is being encrypted, the call progress icon to the right of the call duration timer in the phone screen changes to this icon: .


Note


If the call is routed through non-IP call legs (for example, the PSTN) the call may be nonsecure even though it is encrypted within the IP network and has a lock icon associated with it.


In a protected call, a security tone plays at the beginning of a call to indicate that the other connected phone is also receiving and transmitting encrypted audio. If your call is connected to a nonprotected phone, the security tone does not play.


Note


Protected calling is supported for connections between two phones only. Some features, such as conference calls, shared lines, Extension Mobility, and Join Across Lines, are not available when protected calling is configured. Protected calls are not authenticated.


Protected Calls Identification

A protected call is established when your phone and the phone on the other end are configured for protected calling. The other phone can be in the same Cisco IP network or on a network outside the IP network. Protected calls can only be made between two phones. Conference calls and other multiple-line calls are not supported.

The system establishes a protected call using this process:

  1. A user initiates the call from a protected phone (protected security mode).
  2. The phone displays the icon (encrypted) on the phone screen. This icon indicates that the phone is configured for secure (encrypted) calls, but the icon does not mean that the other connected phone is also protected.
  3. A security tone plays if the call is connected to another protected phone, indicating that both ends of the conversation are encrypted and protected. If the call is connected to a nonprotected phone, the secure tone does not play.

    Note


    Protected calling is supported for conversations between two phones. Some features, such as conference calls, shared lines, Extension Mobility, and Join Across Lines, are not available when protected calling is configured.


Related References

Security Restrictions

When using a phone that is not configured for encryption, the user cannot barge into an encrypted call. When barge fails in this case, a reorder (fast busy) tone plays on the barge initiator phone.

If the phone is configured for encryption, the user can barge into an authenticated or nonsecure call from the encrypted phone. After the barge occurs, Cisco Unified Communications Manager classifies the call as nonsecure.

If the phone is configured for encryption, the user can barge into an encrypted call, and the phone indicates that the call is encrypted.

A user can barge into an authenticated call, even if the phone that is used to barge is nonsecure. The authentication icon continues to display on the authenticated phones in the call, even if the initiator’s phone does not support security.

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Deployment

When deploying a new IP telephony system, system administrators and network administrators must complete several tasks to prepare the network for IP telephony service. For information and a checklist for setting up and configuring a complete Cisco IP telephony network, see the "System Configuration Overview" chapter in the Cisco Unified Communications Manager System Guide.

After you have set up the IP telephony system and configured system-wide features in Cisco Unified Communications Manager Administration, you can add IP phones to the system. To add Cisco Wireless IP Phones to the IP network, system administrators should conduct a site survey to determine strategic locations for access points (APs) to ensure good wireless voice coverage. For detailed information about a voice over WLAN deployment, see the Cisco Unified Wireless IP phone 7925 and 7926 Series Deployment Guide at this URL: http:/​/​www.cisco.com/​en/​US/​products/​hw/​phones/​ps379/​products_​implementation_​design_​guides_​list.html.


Note


The Cisco Unified Wireless IP Phone 7926G must be running Firmware Version 1.4(1) or later.


Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Setup in Cisco Unified Communications Manager

To add phones to the Cisco Unified Communications Manager Administration, you can use:

  • Autoregistration
  • Cisco Unified Communications Manager Administration
  • Bulk Administration Tool (BAT)
  • BAT and the Tool for Auto-Registered Phones Support (TAPS)

For general information about configuring phones in Cisco Unified Communications Manager, see the "Cisco Unified IP Phone" chapter in the Cisco Unified Communications Manager System Guide.

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Installation

After you have added the phones to the Cisco Unified Communications Manager Administration, you can complete the phone installation. You can install the phone or the user can install the phone. The Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Installation Guide provides directions for assembling the phone and accessories and charging the battery.

Before using the phone to connect to the wireless LAN, you need to configure a network profile for the phone. You can use the phone web pages to set up the network profile and other phone settings, or you can configure the network profile using the menus on the phone.

If you use autoregistration that is part of Cisco Unified Communications Manager Administration, you need to update the specific configuration information for the phone such as associating the phone with a user, changing the softkey template, or changing the directory number (DN).


Note


Before you install a phone, even if it is new, upgrade the phone to the current firmware image. For information about upgrading, see the readme file for your phone which is located at: http:/​/​www.cisco.com/​cgi-bin/​tablebuild.pl/​ip-7900ser-crypto.