Cisco 7925G - Unified Wireless IP Phone VoIP Administration Manual

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Cisco Unified Wireless IP Phone 7925G Administration Guide for Cisco Unified Communications Manager 7.0(1)

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Cisco Unified Wireless IP Phone 7925G Administration Guide for Cisco Unified Communications Manager 7.0(1)

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CONTENTS

Preface xi

Overview xi

Audience xi

Organization xii

Related Topics

• Features Supported on the Cisco Unified Wireless IP Phone 7925G, page 1-6

• Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7925G, page 1-14

Activates the softkey option displayed on the screen. When customized by the phone administrator or user, allows direct access to the Phone Book or voice messages.

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.

Configurable button that is used with XML applications, such as Push to Talk or Directory services. See

“Setting Up Services” section on page 7-17.

Features Supported on the Cisco Unified Wireless IP

Phone 7925G

The Cisco Unified Wireless IP Phone 7925G 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.

This section provides information about these topics:

• Feature Overview, page 1-7

• Telephony Features, page 1-7

• Understanding Security Profiles, page 1-12

• Network Settings Configuration, page 1-7

• Feature Information for Users, page 1-8

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G

Feature Overview

The Cisco Unified Wireless IP Phone 7925G provides traditional telephony functionality, such as call forwarding and transferring, call pickup, redialing, speed dialing, conference calling, and voice messaging 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

• Auto-detection of headset and auto-answer 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

Related Topics

• Configuring Network Profiles, page 4-8

Features Supported on the Cisco Unified Wireless IP Phone 7925G

• Configuring Features, Templates, Services, and Users, page 7-1

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 the

“Telephony Features Available for the Phone” section on page 7-2 and Cisco

Unified Communications Manager Administration Guide for additional information.

For more information about the Cisco Unified Communications Manager Administration, refer to 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.

Related Topics

• Using the Cisco Unified Wireless IP Phone 7925G Web Pages, page 4-1

• Configuring Settings on the Cisco Unified Wireless IP Phone 7925G, page 5-1

• Monitoring the Cisco Unified Wireless IP Phone Remotely, page 9-1

Feature Information for 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 documentation. Make sure to visit the Cisco

http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_products_support_maintain_and_operate. html

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G

Chapter 5, “Configuring Settings on the Cisco Unified Wireless IP

Chapter 9, “Monitoring the Cisco Unified Wireless IP Phone

Unified Wireless IP Phone 7925G

Unified IP Phone web site:

From this site, you can view additional phone documentation.

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

For a summary of the key information that you can provide to phone users, see Appendix A, “Providing

Information to Users By Using a Website.”

Note The radio frequency (RF) for the Cisco Unified Wireless IP Phone 7925G is configured for a specific

regulatory domain. If users attempt to use this phone outside of the regulatory domain, the phone will not function properly and they might violate local regulations.

Related Topics

• Understanding Security Profiles, page 1-12

• Identifying Authenticated, Encrypted, and Protected Phone Calls, page 1-12

• Viewing Device Information, page 8-4

• Security Restrictions, page 1-13

Understanding Security Profiles

A security profile, which defines whether the phone is non-secure, authenticated, encrypted, or protected is associated with every Cisco Unified IP Phone that is supported by Cisco Manager Administration. For information about configuring the security profile and applying the profile to the phone, refer to Cisco Unified Communications Manager Security Guide.

Note For Cisco Unified IP Phones using Cisco Unified CallManager 4.1 and later, security is configured on

each phone. For more information about configuring security, refer to Cisco Unified CallManager Security Guide at

http://www.cisco.com/en/US/products/sw/voicesw/ps556/prod_maintenance_guides_list.html.

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G

Unified Communications

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

“Viewing Security

Information” section on page 8-1.

Related Topics

• Identifying Authenticated, Encrypted, and Protected Phone Calls, page 1-12

• Viewing Device Information, page 8-4

• Security Restrictions, page 1-13

Identifying 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 if 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 are authenticated by Cisco

Unified Communications Manager. When a call in progress 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 in progress is being encrypted, the call progress icon to the right of the call duration timer in the phone screen changes to this icon:

level of security, providing integrity and privacy to the call. When a call

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G

Note If the call is routed through non-IP call legs, for example, 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 non-protected phone, the security tone does not play.

Note Protected calling is supported for connections between two phones only. Some features, such as

conference calling, shared lines, Extension Mobility, and Join Across Lines are not available when protected calling is configured. Protected calls are not authenticated.

Establishing and Identifying Protected Calls

Understanding Security Features for Cisco Unified IP Phones

A protected call is established when your phone, and the phone on the other end, is 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.

A protected call is established 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 this 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 non-protected phone, then the secure tone is not played.

Note Protected calling is supported for conversations between two phones. Some features, such as conference

calling, shared lines, Extension Mobility, and Join Across Lines are not available when protected calling is configured.

Related Topics

• Understanding Security Features for Cisco Unified IP Phones, page 1-8

• Understanding Security Profiles, page 1-12

• Security Restrictions, page 1-13

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 tone (fast busy tone) plays on the barge initiator phone.

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G

Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7925G

If the phone is configured for encryption, the user can barge into an authenticated or non-secure call from the encrypted phone. After the barge occurs, Cisco as non-secure.

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 non-secure. The authentication icon continues to display on the authenticated phones in the call, even if the initiator’s phone does not support security.

Unified Communications Manager classifies the call

Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7925G

When deploying a new IP telephony system, system administrators and network administrators must complete several tasks to prepare the network for IP for setting up and configuring a complete Cisco IP telephony network, refer to the “System Configuration Overview” chapter in the Cisco Unified Communications Manager System Guide.

telephony service. For information and a checklist

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 wireless strategic locations for access points (APs) to ensure good wireless voice coverage. For detailed information about a voice over WLAN deployment, refer to the

Guide.

The following topics provide an overview of procedures for adding Cisco Unified IP Phones to your network:

• Configuring the Cisco Unified Wireless IP Phone 7925G in Cisco Unified Communications

• Installing the Cisco Unified Wireless IP Phone 7925G, page 1-15

IP phones to the IP network, system administrators should conduct a site survey to determine

Cisco Enterprise Mobility 3.0 Design

Manager, page 1-14

Configuring the Cisco Unified Wireless IP Phone 7925G in Cisco Unified Communications Manager

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

• Auto-registration

• Cisco Unified Communications Manager Administration

• Bulk Administration Tool (BAT)

• BAT and the Tool for Auto-Registered Phones Support (TAPS)

For more information about these choices, see the “Methods for Adding Phones to Cisco

Unified Communications Manager” section on page 3-2.

For general information about configuring phones in Cisco Unified Communications Manager, refer to the “Cisco Unified IP Phone” chapter in the Cisco Unified Communications Manager System Guide.

For a checklist of tasks for configuring the phone in Cisco Unified Communications Manager, see the

“Configuring the Cisco Unified Wireless IP Phone 7925G in Cisco Unified Communications Manager” section on page D-4.

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G

Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7925G

Related Topics

• Installing the Cisco Unified Wireless IP Phone 7925G, page 1-15

• Configuring Features, Templates, Services, and Users, page 7-1

• Configuring the Cisco Unified Wireless IP Phone 7925G in Cisco Unified Communications

Manager, page D-4

Installing the Cisco Unified Wireless IP Phone 7925G

After you have added the phones to the Cisco Unified Communications Manager Administration, you can complete the phone installation. You or the end users can install the phone at the user location. The Cisco Unified Wireless IP Phone Installation Guide, available online at

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7925g/7_0/english/install/guide/7925ig.pdf. html, provides directions for assembling the phone and accessories and charging the battery.

Prior to 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 auto-registration 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 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, refer to the Readme file for your phone which is located at:

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

For a checklist of tasks for installing the phone, see the “Installing the Cisco Unified Wireless

IP Phone 7925G” section on page D-7.

Related Topics

• Understanding the Cisco Unified Wireless IP Phone 7925G, page 1-1

• Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7925G, page 1-14

• Installing the Cisco Unified Wireless IP Phone 7925G, page D-7

• Troubleshooting the Cisco Unified Wireless IP Phone 7925G, page 10-1

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Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7925G

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7925G

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CHA PTER

Overview of the VoIP Wireless Network

This chapter provides an overview of the interaction between the Cisco Unified Wireless IP

Phone 7925G and other key components of a VoIP network in a wireless local area network (WLAN)

environment. It contains the following sections:

• Understanding the Wireless LAN, page 2-1

• Understanding WLAN Standards and Technologies, page 2-3

• Bluetooth Wireless Technology, page 2-8

• Components of the VoIP Wireless Network, page 2-9

• Security for Voice Communications in WLANs, page 2-16

• VoIP WLAN Configuration, page 2-21

• Site Survey Verification, page 2-22

Understanding the Wireless LAN

With the introduction of wireless communication, wireless IP phones can provide voice communication within the corporate WLAN. The Cisco with wireless access points (APs) and key Cisco Unified

In a traditional LAN, IP phones and computers use cables to transmit messages and data packets. Cisco Unified WLAN delivers security, scalability, reliability, ease of deployment, and management similar to wired LANs. It includes RF capabilities that enable real-time access to core business applications and provides proven enterprise-class secure connectivity. The WLAN is an integrated end-to-end solution that uses wireless IP phones and APs, network infrastructure, network management, and mobility services.

Figure 2-1 shows a typical WLAN topology that enables the wireless transmission of voice for wireless

IP telephony.

Communications Manager Administration, to provide wireless voice communication.

Unified Wireless IP Phone 7925G depends upon and interacts

IP telephony components, including Cisco

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Understanding the Wireless LAN

113946

Figure 2-1 WLAN with Wireless IP Phones

When a wireless IP phone powers on, it searches for and becomes associated with an AP. As users move from one location to another, the wireless IP phone roams out-of-range of one AP into the range of another AP. The wireless IP phone builds and maintains a list of eligible APs and reconnects to an AP in that list. See

Chapter 2 Overview of the VoIP Wireless Network

“Associating to APs” section on page 2-12 for more information.

The AP uses its connection to the wired network to transmit data and voice packets to and from the switches and routers. Voice signaling is transmitted to the Cisco Unified Communications Manager server for call processing and routing.

APs are critical components in a WLAN because they provide the wireless links or “hot spots” to the network. Cisco requires that the APs supporting voice communications use Cisco IOS Release 12.3(8)JA or later. Cisco IOS software provides features for managing voice traffic.

In some WLANs, each AP has a wired connection to an Ethernet switch, such as a Cisco Catalyst 3750, that is configured on a LAN. The switch provides access to gateways and the Cisco Unified Communications Manager server to support wireless IP telephony.

Some networks have wired components that support wireless components. The wired components could consist of switches, routers, and bridges with special modules to enable wireless capability.

The Cisco Unified WLAN can have the following components:

• Cisco Aironet Series Access Points—802.11a/b/g enterprise-class access points with integrated

antennas or antenna connections for easy deployment.

• Cisco 2000 Series Wireless LAN Controller—For small to medium sized networks, such as branch

offices. Works with Cisco lightweight access points.

• Cisco 4100 Series Wireless LAN Controller—For medium to large deployments. Works with Cisco

lightweight access points.

• Cisco 4400 Series Wireless LAN Controller—For large enterprise facilities. The Cisco 4402 and

4404 models support a maximum of 50 and 100 access points respectively.

• Cisco Wireless LAN Controller Module for Integrated Services Routers—Enables small-to-medium

businesses and enterprises to deploy and manage secure WLANs at branch offices.

• Cisco Catalyst 6500 Series Wireless Services Module (WiSM)—Provides security, mobility,

redundancy, and ease of use for WLAN administrators.

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Chapter 2 Overview of the VoIP Wireless Network

Understanding WLAN Standards and Technologies

• Cisco Catalyst 3750 Series Integrated Wireless LAN Controllers—Adds wireless LAN controller

functions to the stackable Cisco Catalyst 3750G Series Switches to improve operating efficiency, security, mobility, and ease of use for WLAN administrators.

• Wireless Control System (WCS)—Provides a powerful systems management. System

administrators can design, control, and monitor enterprise WLANs from a centralized location.

• Cisco 2700 Series Wireless Location Appliance—802.11 based location tracking solution for asset

tracking, IT management, and location based security. An open API is included.

• Cisco Wireless LAN Client Adapters—Available in CardBus, PCMCIA and PCI form factors, Cisco

Aironet Wireless LAN Client Adapters connect desktop and mobile computing devices to the WLAN in 802.11b-compliant or 802.11a-compliant network.

For more information about Cisco Unified Wireless Networks, refer to

http://www.cisco.com/en/US/products/hw/wireless/index.html

Understanding WLAN Standards and Technologies

This section describes the following concepts:

• 802.11 Standards for WLAN Communications, page 2-3

• Radio Frequency Ranges, page 2-4

• 802.11 Data Rates, Tx Power, Ranges, and Decibel Tolerances, page 2-4

• Wireless Modulation Technologies, page 2-5

• AP, Channel, and Domain Relationships, page 2-6

• WLANs and Roaming, page 2-7

802.11 Standards for WLAN Communications

Wireless LANs must follow the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards that define the protocols that govern all Ethernet-based wireless traffic. The Cisco Wireless IP

• 802.11b—Specifies the radio frequency (RF) of 2.4 GHz for both transmitting and receiving data.

Commonly called the Wi-Fi standard.

• 802.11g—Uses the same unlicensed 2.4 GHz band as 802.11b, but extends the data rates to provide

greater performance by using Orthogonal Frequency Division Multiplexing (OFDM) technology. OFDM is a physical–layer encoding technology for transmitting signals by using RF.

• 802.11a—Uses the 5 GHz band that provides more channels and improved data rates by using

OFDM technology. Dynamic Frequency Selection (DFS) and Transmit Power Control (TPC) supports this standard.

Phone 7925G supports the following standards:

Unified

• 802.11d—Enables APs to communicate available radio channels and acceptable power levels. The

Cisco Unified Wireless IP Phone 7925G will always give precedence to 802.11d to determine which channels and powers to use. If the information is unavailable, then the phone will fallback to the locally configured regulatory domain.

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Understanding WLAN Standards and Technologies

Radio Frequency Ranges

WLAN communications use the following RF ranges:

• 2.4 GHz—Does not require licensing. To reduce interference within this bandwidth, WLANs

transmit on non-overlapping channels, which are typically limited to three channels, although Japan uses four channels.

Many devices operate in the 2.4 GHz bandwidth including cordless phones and microwave ovens and can interfere with wireless communications. Interference does not destroy the signal, but can reduce the transmission speed from 11 Mbps to 1 Mbps. RF interference can affect voice quality over the wireless network.

• 5 GHz—Divided into several sections called Unlicensed National Information Infrastructure (UNII)

bands and has four channels each. The channels are spaced at 20 MHz to provide non-overlapping channels and more channels than 802.11b or 802.11g.

Table 2-1 lists frequency band ranges and operating channels by regulatory domain.

Ta b l e 2-1 Frequency Bands and Operating Channels by Regulatory Domain

Regulatory Domain Frequency Band Range Operating Channels

Federal Communications Commission (FCC)

Product number is CP-7925GA-K9

Chapter 2 Overview of the VoIP Wireless Network

2.412-2.462 GHz 11 channels

5.15-5.25 GHz (UNII-1)

5.25-5.35 GHz (UNII-2)

8 of 11 channels

5.725-5.825 (UNII-3)

5.470 - 5.725 (DFS)

5.47-5.725 GHz (pending approval

ETSI (Europe) 2.412-2.472 GHz 13 channels

Product number is CP-7925GE-K9

Japan 2.412-2.472 GHz 13 channels (ODFM)

Product number is CP-7925GPC-CH1-K9

World Product number is CP-7925GW-K9

5.15-5.725 GHz 19 channels

2.412-2.484 GHz 14 channels (CCK)

5.15-5.35 GHz 8 channels

— Uses 802.11d to identify band

11 channels

ranges and channels

802.11 Data Rates, Tx Power, Ranges, and Decibel Tolerances

Table 2-2 lists the Tx power capacities, data rates, ranges in feet and meters, and decibels tolerated by

the receiver by 801.11 standard.

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Chapter 2 Overview of the VoIP Wireless Network

Ta b l e 2-2 Tx Power, Data Rates, Ranges, and Decibels by Standard

Understanding WLAN Standards and Technologies

Standard

Maximum Tx Power

Data Rate

Range

Receiver Sensitivity

802.11a

40mW 6 Mbps 610 ft (186 m) -89 dBm

9 Mbps 610 ft (186 m) -88 dBm

12 Mbps 558 ft (170 m) -86 dBm

18 Mbps 541 ft (165 m) -85 dBm

24 Mbps 508 ft (155 m) -82 dBm

36 Mbps 426 ft (130 m) -80 dBm

48 Mbps 328 ft (100 m) -76 dBm

54 Mbps 295 ft (90 m) -74 dBm

802.11g

40mW 6 Mbps 722 ft (220 m) -90 dBm

9 Mbps 656 ft (200 m) -89 dBm

12 Mbps 623 ft (190 m) -87 dBm

18 Mbps 623 ft (190 m) -85 dBm

24 Mbps 623 ft (190 m) -82 dBm

36 Mbps 492 ft (150 m) -78 dBm

48 Mbps 410 ft (125 m) -74 dBm

54 Mbps 394 ft (120 m) -73 dBm

802.11b

50mW 1 Mbps 1,027 ft (313 m) -95 dBm

2 Mbps 951 ft (290 m) -89 dBm

5.5 Mbps 853 ft (260 m) -89 dBm

11 Mbps 787 ft (240 m) -85 dBm

1. Adjusts dynamically when associating with an AP if the AP client setting is enabled.

2. Advertised rates by the APs are used. If the Restricted Data Rates functionality is enabled in the Cisco Unified Communications Manager Administration phone configuration, then the Traffic Stream Rate Set IE (CCX V4) is used.

Wireless Modulation Technologies

Wireless communications uses the following modulation technologies for signaling:

• Direct-Sequence Spread Spectrum (DSSS)—Prevents interference by spreading the signal over the

frequency range or bandwidth. DSSS technology multiplexes chunks of data over several frequencies so that multiple devices can communicate without interference. Each device has a special code that identifies its data packets and all others are ignored. Cisco wireless 802.11b/g products use DSSS technology to support multiple devices on the WLAN.

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Understanding WLAN Standards and Technologies

• Orthogonal Frequency Division Multiplexing (OFDM)—Transmits signals by using RF. OFDM is

a physical–layer encoding technology that breaks one high-speed data carrier into several lower-speed carriers to transmit in parallel across the RF spectrum. OFDM, when used with 802.11g and 802.11a, can support data rates as high as 54 Mbps.

Table 2-3 provides a comparison of data rates, number of channels, and modulation technologies by

standard.

Ta b l e 2-3 Data Rates, Number of Channels, and Modulation Technologies by IEEE Standard

Item 802.11b 802.11g 802.11a

Data Rates 1, 2, 5.5, 11 Mbps 6, 9, 12, 18, 24, 36, 48, 54

Non-overlapping Channels

Wireless Modulation

Chapter 2 Overview of the VoIP Wireless Network

6, 9, 12, 18, 24, 36, 48, 54

Mbps

3 (Japan uses 4) 3 (Japan uses 4) Up to 23

DSSS DSSS, ODFM ODFM

AP, Channel, and Domain Relationships

APs transmit and receive RF signals over channels within the 2.4 GHz or 5.1 to 5.8 GHz frequency band. To provide a stable wireless environment and reduce channel interference, you must specify non-overlapping channels for each AP. The recommended channels for 802.11b and 802.11g in North America are 1, 6, and 11.

Regulatory domains determine the number of channels that wireless communications can use within the frequency band. regulatory domains. The Cisco Unified Wireless IP Phone 7925G uses the fourth domain for all other regions in the world. Wireless LANs in the rest of the world use 802.11d to identify band ranges and channels.

Note In a non controller-based wireless network, it is recommended that you statically configure channels for

each AP. If your wireless network uses a controller, use the Auto-RF feature with minimal voice disruption.

The AP coverage area depends on its type of antenna and transmission power. The AP coverage range is from 500 to 1000 feet with effective isotropic radiated power (EIRP) output that scales at 1, 5, 20, and 50 mW. To provide effective coverage, APs need a range overlap of approximately 20 percent to allow uninterrupted connections as phone users roam from one AP to another.

Wireless networks use a service set identifier (SSID). The SSID differentiates one WLAN from another, so all APs and all devices attempting to connect to a specific WLAN must use the same SSID. The SSID groups user devices and associates the group with the APs.

For more information about wireless network components and design, refer to the Overview: Cisco Unified Wireless Network at

http://www.cisco.com/en/US/solutions/ns175/networking_solutions_products_genericcontent0900aecd 80529a5f.html.

Table 2-1 lists the frequency ranges, operating channels, and product numbers for four

For more information about APs, see the “VoIP WLAN Configuration” section on page 2-21.

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WLANs and Roaming

Wireless IP phones provide communication mobility to users within the WLAN environment. Unlike cellular phones that have broad coverage, the coverage area for the wireless IP therefore, phone users frequently roam from one AP to another. To understand some of the limitations of roaming with wireless IP phones, these examples provide information about the WLAN environment.

• Pre-call Roaming—A wireless IP phone user powers on the phone in the office, and the phone

associates with the nearby AP. The user leaves the building, moves to another building, and then places a call. The phone associates with a different AP in order to place the call from the new location. If the associated AP is within the same Layer 2 VLAN, the IP address remains the same for the phone. But, if the roaming phone crosses a Layer 3 boundary with DHCP enabled, the phone recognizes that it is no longer in the same subnet. The phone requests a new IP address before it can connect to the network and place the call.

Note If a user leaves the WLAN coverage area and then comes back into the same WLAN area, the

phone must reconnect to the network. By pressing a key on the phone, the user activates the phone and increases the scanning rate to speed up reconnecting to the network.

Understanding WLAN Standards and Technologies

phone is smaller;

• Mid-call Roaming—A wireless IP phone user is actively engaged in a call and moves from one

building to another. The roaming event occurs when the phone moves into the range of a different AP, and then the phone authenticates and associates with the new AP. The previous AP hands the call over to the new AP while maintaining continuous audio connection without user intervention. As long as the APs are in the same Layer 2 subnet, the wireless IP and the call continues. As a wireless IP new AP. See the

“Authentication Methods” section on page 2-16 for information about

phone roams between APs, it must re-authenticate with each

phone keeps the same IP address

authentication.

If the wireless IP phone user moves from an AP that covers IP Subnet A to an AP that covers IP Subnet B, the phone no longer has an IP address or gateway that is valid within the new subnet and the call can disconnect.

• Layer 3 Roaming—With the release of the Cisco Catalyst 6500 Series Wireless LAN Services

Module (WLSM), the Cisco

Unified Wireless IP Phone 7925G now supports Layer 3 roaming for autonomous mode APs. For details about the Cisco WLSM, refer to the product documentation available at:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/cfgnotes/wlsm_1_1/index.htm

Layer 3 roaming with lightweight mode APs is accomplished by controllers that use dynamic interface tunneling. Clients that roam across controllers and VLANS can keep their IP address when using the same SSID.

• Fast and Secure Roaming—Cisco Centralized Key Management (CCKM) enables authenticated

client devices to roam securely from one AP to another without any perceptible delay during reassociation. With the support of CCKM protocol, the wireless

IP phone is able to negotiate the handoff from one AP to another more easily. During the roaming process, the phone must scan for the nearby APs, determine which AP can provide the best service, and then reassociate with the new AP. When implementing stronger authentication methods, such as WPA and EAP, the number of information exchanges increases and causes more delay during roaming. To avoid additional delays, use CCKM to manage authentication.

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Bluetooth Wireless Technology

Note In dual band WLANs, it is possible to roam between 2.4 GHz bands (802.11b/g) and 5 GHz bands

(802.11a). The phone moves out of range of one AP using one band and into the range of another that has the same SSID but is using a different band. This can cause gaps in voice communications. To avoid these communication gaps, try to use only one band for voice communications.

Related Topics

• Voice QoS in a Wireless Network, page 2-12

• Configuring the Wireless Network for Voice, page 2-22

Chapter 2 Overview of the VoIP Wireless Network

CCKM, a centralized key management protocol, provides a cache of session credentials on the wireless domain server (WDS). As the phone roams from one AP to the next, CCKM compresses the number of message exchanges during roaming by providing a master key stored on the WDS for the AP to use. The reassociation exchange is reduced to two messages, thereby reducing the roaming time.

For details about CCKM, refer to the “Cisco Fast Secure Roaming Application Note” at:

http://www.cisco.com/en/US/products/hw/wireless/ps4570/prod_technical_reference09186a00801 c5223.html

• VoIP WLAN Configuration, page 2-21

Bluetooth Wireless Technology

Bluetooth Class 2.0 with Extended Data Rate (EDR) is a short-range wireless technology that is supported by the Cisco Unified Wireless IP Phone 7925G. It supports the Hands-Free Profile version 1.5.

Your Cisco Unified Wireless IP Phone 7925G is a qualified Bluetooth wireless device (Qualified Device ID (QDID) B014396) and provides voice communication over the same wireless LAN that your computer uses.

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 wireless technology operates in the 2.4 GHz band which is the same as the 802.11b/g band. There can be a potential interference issues. It is recommended 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 7925G on the same side of the body as the

Bluetooth-enabled headset.

Pairing Headsets

The Cisco Unified Wireless IP Phone 7925G pairs with headsets using a shared key authentication and encryption method. The authentication process can require a personal identification number (PIN) specific to the headset, commonly “0000.” The Cisco with more than one headset at a time. Pairing is typically performed once for each headset.

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Once a device has been paired, its Bluetooth connection is maintained as long as both devices (phone and headset) are enabled and within range of each other. The connection re-establishes itself automatically if either of the devices powers down then powers up. The green-dotted Bluetooth icon indicates whether or not a device is connected.

When headsets are more than 10 meters away from Cisco Unified Wireless IP Phone 7925G, Bluetooth drops the connection after a 15 to 20 second timeout. If the paired headset comes back into range of the Cisco Unified Wireless IP Phone 7925G and the phone is not connected to another Bluetooth headset, then the in-range Bluetooth headset automatically reconnects. For certain phone types that operate in power-save modes, the user may have to “wake-up” the headset by tapping on its operational button to initiate the reconnect.

Note It is recommended that users read the headset user guide for more information about pairing and

connecting the headsets.

Components of the VoIP Wireless Network

The wireless IP phone must interact with several network components in the WLAN to successfully place and receive calls. The following topics describe network components:

• Networking Protocols Used with Cisco Unified Wireless IP Phones, page 2-9

• Interacting with Cisco Unified Wireless APs, page 2-11

• Voice QoS in a Wireless Network, page 2-12

• Interacting with Cisco Unified Communications Manager, page 2-14

• Interacting with the Dynamic Host Configuration Protocol Server, page 2-15

Networking Protocols Used with Cisco Unified Wireless IP Phones

Cisco Unified IP Phones support several networking protocols for voice communication. Table 2-4 describes the networking protocols that the Cisco Unified Wireless IP Phone 7925G supports.

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Components of the VoIP Wireless Network

Ta b l e 2-4 Supported Networking Protocols

Networking Protocol Purpose Usage Notes

Cisco Discovery Protocol (CDP)

Dynamic Host Configuration Protocol (DHCP)

IP Messaging protocol that addresses

Chapter 2 Overview of the VoIP Wireless Network

Device-discovery protocol that runs on all Cisco-manufactured equipment.

Using CDP, a device can advertise its existence to other devices and receive information about other devices in the network.

Dynamically allocates and assigns an IP address to network devices.

DHCP enables an IP phone to connect to the network and become operational without the administrator assigning an IP address or configuring additional network parameters.

and sends packets across the network.

Cisco Unified IP Phones use CDP to communicate information such as auxiliary VLAN ID, per-port power management details, and QoS configuration information with the Cisco Catalyst switch.

DHCP is enabled by default. If disabled, you must manually configure the IP address, subnet mask, gateway, and an TFTP server on each phone locally.

Use DHCP custom option 150. With this method, you configure the TFTP server IP address as the option value. For additional supported DHCP configurations, refer to Cisco

Unified

Communications Manager

System Guide.

To communicate using IP, network devices must have an assigned IP address, subnet, and gateway.

Real-Time Control Protocol (RTCP)

Used with the RTP protocol to provide control over the transporting of real-time data, such as interactive voice and video, over data networks.

RTP Standard for transporting real-time

data, such as interactive voice and video, over data networks.

SCCP Uses Cisco-proprietary messages to

communicate between IP devices and Cisco Unified Communications Manager, Release 4.x, 5.1, 6.0, 6.1, and 7.0.

IP addresses, subnet, and gateway identifications are automatically assigned if you are using the Cisco Unified

IP Phone with DHCP. If you are not using DHCP, you must manually assign these properties to each phone locally.

Cisco Unified IP Phones use the RTCP protocol to allow monitoring of the data delivery and minimal control and identification functionality.

Cisco Unified IP Phones use the RTP protocol to send and receive real-time voice traffic from other phones and gateways.

Cisco Unified IP Phones use SCCP protocol for VoIP call signaling and enhanced features such as Message Waiting Indication (MWI).

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Table 2-4 Supported Networking Protocols (continued)

Networking Protocol Purpose Usage Notes

TCP Connection-oriented transport

TFTP Method for transferring files over the

TLS TLS is a standard protocol for

User Datagram Protocol (UDP)

protocol.

network.

On the Cisco Unified IP Phone, TFTP enables you to obtain a configuration file specific to the phone type.

securing and authenticating communications.

Connectionless messaging protocol for delivery of data packets.

Components of the VoIP Wireless Network

Cisco Unified IP Phones use TCP to connect to Cisco Unified

Communications Manager

and to access XML services.

You must have a TFTP server in your network that the DHCP server automatically identifies. If more than one TFTP server is running in your network, you must manually assign a TFTP server to each phone.

When security is implemented, Cisco Unified

IP Phones use the TLS protocol when securely registering with Cisco Unified

Communications

Manager.

Cisco Unified IP Phones receive and process UDP messages. RTP voice traffic runs over UDP.

Related Topics

• Understanding the Phone Startup Process, page 3-17

• Components of the VoIP Wireless Network, page 2-9

• Configuring DHCP Settings, page 5-6

Interacting with Cisco Unified Wireless APs

Wireless IP phones use the same APs as wireless data devices. However, voice traffic over a WLAN requires different equipment configurations and layouts than a WLAN that is used exclusively for data traffic. Data transmission can tolerate a higher level of RF noise, packet loss, and channel contention than voice transmission. Packet loss during voice transmission can cause choppy or broken audio and make the phone call inaudible.

Wireless IP Phones users are mobile and often roam across a campus or between floors in a building while connected to a call. In contrast, data users remain in one place or occasionally move to another location. The ability to roam while maintaining a call is one of the advantages of wireless voice so RF coverage needs to include stairwells, elevators, quiet corners outside conference rooms, and passage ways.

To ensure good voice quality and optimal RF signal coverage, you must perform a site survey. The site survey will determine settings suitable to wireless voice and assist in the design and layout of the WLAN; for example AP placement, power levels, and channel assignments.

After deploying and using wireless voice, you should continue to perform post installation site surveys. When you add a group of new users, install more equipment, or stack large amounts of inventory, you are changing the wireless environment. A post installation survey will verify that the AP coverage is still adequate for optimal voice communications. See the more information.

“Site Survey Verification” section on page 2-22 for

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Components of the VoIP Wireless Network

Associating to APs

At startup, the Cisco Unified Wireless IP Phone 7925G scans for APs with SSIDs and encryption types that it recognizes. The phone builds and maintains a list of eligible APs and uses the following variables to determine the best AP.

• Received Signal Strength Indicator (RSSI)—Signal strength of available APs within the RF

coverage area. The phone attempts to associate with the AP with the highest RSSI value.

• QoS Basic Service Set (QBSS)—Beacon information element (IE) that sends the channel usage of

the AP to the wireless IP effectively handle more traffic.

Note QBSS is not supported when using Wi-Fi 802.11a.

• Traffic Specification (TSpec)—Calculation of call limits and WLAN load balancing. The TSpec

value of each voice stream allows the system to allocate bandwidth to voice devices on a first-come, first-served basis. For more information, see

page 2-12.

Chapter 2 Overview of the VoIP Wireless Network

phone. The phone uses the QBSS value to determine whether the AP can

“Voice QoS in a Wireless Network” section on

The wireless IP phone associates with the AP with the highest RSSI and lowest channel usage values (QBSS) that have matching SSID and encryption types.To ensure that voice traffic is handled properly, you must configure the correct QoS in the AP. For configuration information, see

Requirements for VoIP” section on page 2-21.

Related Topics

• Security for Voice Communications in WLANs, page 2-16

• VoIP WLAN Configuration, page 2-21

Voice QoS in a Wireless Network

Voice traffic on the Wireless LAN, like data traffic, is susceptible to delay, jitter, and packet loss. These issues do not impact the data end user, but have serious implications for a voice call. To ensure that voice traffic receives timely and reliable treatment with low delay and low jitter, you must use Quality of Service (QoS), and use separate virtual LANs (VLANs) for voice and data. By isolating the voice traffic onto a separate VLAN, you can use QoS to provide priority treatment for voice packets when traveling across the network. Also, use a separate VLAN for data traffic, not the default native VLAN which is typically used for all network devices.

You need the following VLANs on the network switches and the APs that support voice connections on the WLAN.

• Voice VLAN—Voice traffic to and from the wireless IP phone

“Wireless Network

• Data VLAN—Data traffic to and from the wireless PC

• Native VLAN—Data traffic to and from other wireless devices

Assign separate SSIDs to the voice and to the data VLANs. If you configure a separate management VLAN in the WLAN, do not associate an SSID with the management VLAN.

By separating the phones into a voice VLAN and marking voice packets with higher QoS, you can ensure that voice traffic gets priority treatment over data traffic resulting in lower packet delay and fewer lost packets.

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119160

Downstream

Upstream

Downstream

Upstream

Network

Downstream QoS only

Bi-Directional QoS

Unlike wired networks with dedicated bandwidths, wireless LANs consider traffic direction when implementing QoS. Traffic is classified as upstream or downstream from the point of view of the AP as shown in

Figure 2-2 Voice Traffic in a Wireless Network

Figure 2-2.

Beginning with Cisco IOS release 12.2(11)JA, Cisco Aironet APs support the contention-based channel access mechanism called Enhanced Distributed Coordination Function (EDCF). The EDCF-type of QoS has up to eight queues for downstream (toward the 802.11b/g clients) QoS. You can allocate the queues based on these options:

• QoS or Differentiated Services Code Point (DSCP) settings for the packets

Components of the VoIP Wireless Network

• Layer 2 or Layer 3 access lists

• VLANs for specific traffic

• Dynamic registration of devices

Although you can have up to eight queues on the AP, you should use only two queues for voice traffic to ensure the best possible voice QoS. Place voice (RTP) and signaling (SCCP) traffic in the highest priority queue, and place data traffic in a best-effort queue.Although 802.11b/g EDCF does not guarantee that voice traffic is protected from data traffic, you should get the best statistical results by using this queuing model.

Note The Cisco Unified Wireless IP Phone 7925G marks the SCCP signaling packets with a DSCP

value of 24 and RTP packets with DSCP value of 46.

To improve reliability of voice transmissions in a nondeterministic environment, the Cisco Unified Wireless IP

Phone 7925G supports the IEEE 802.11e industry standard and is Wi-Fi Multimedia (WMM) capable. WMM enables differentiated services for voice, video, best effort data and other traffic. However, in order for these differentiated services to provide sufficient QoS for voice packets, only a certain amount of voice bandwidth can be serviced or admitted on a channel at one time. If the network can handle “N” voice calls with reserved bandwidth, when the amount of voice traffic is increased beyond this limit, (to N+1 calls), the quality of all calls suffers.

To help address the problems of VoIP stability and roaming, an initial Call Admission Control (CAC) scheme is required. With CAC, QoS is maintained in a network overload scenario by ensuring that the number of active voice calls does not exceed the configured limits on the AP. The Cisco Wireless IP

Phone 7925G can integrate layer 2 TSpec admission control with layer 3 Cisco Unified

Unified

Communications Manager admission control (RSVP). During times of network congestion, calling or called parties receive a fast busy indication. The system maintains a small bandwidth reserve so wireless phone clients can roam into a neighboring AP (AP), even when the AP is at “full capacity”. After reaching the voice bandwidth limit, the next call is load-balanced to a neighboring AP without affecting the quality of the existing calls on the channel.

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Components of the VoIP Wireless Network

Implementing QoS in the connected Ethernet switch is highly desirable to maintain good voice quality. The COS and DSCP values that the Cisco modified. To configure QoS correctly on the AP, see the

Unified Wireless IP Phone 7925G sets do not need to be

“Wireless Network Requirements for VoIP”

section on page 2-21.

Related Topics

• Authentication Methods, page 2-16

• Interacting with Cisco Unified Communications Manager, page 2-14

• VoIP WLAN Configuration, page 2-21

Interacting with Cisco Unified Communications Manager

Cisco Unified Communications Manager is the call control component in the network that handles and routes calls for the wireless components of the IP telephony system—the phones, access gateways, and the resources—for such features as call conferencing and route planning. When deploying Cisco IP

Phone 7925G, you must use Cisco Unified Communications Manager Release 4.1, 4.2, 4.3, 5.1,

6.0(1), 6.1(1) or 7.0(1) and SCCP protocol.

IP phones. Cisco Unified Communications Manager manages the

Unified Wireless

Before Cisco Unified Communications Manager can recognize a phone, it must register with Cisco Unified

Communications Manager and be configured in the database. For information about setting up phones in Cisco Unified Communications Manager, see the

Cisco Unified Wireless IP Phone 7925G” section on page 1-14.

You can find more information about configuring Cisco Unified Communications Manager to work with the IP phones and IP devices in the Cisco Unified

Cisco Unified

Related Topics

• Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7925G, page 1-14

• Phone Configuration Files and Profile Files, page 2-14

Communications Manager System Guide.

Phone Configuration Files and Profile Files

Configuration files for a phone define parameters for connecting to Cisco Unified Communications Manager and are stored on the TFTP server. In general, any time you make a change in Cisco Unified configuration file changes automatically.

Configuration files also contain information about the correct image load for the phone. If this image load differs from the one currently loaded on a phone, the phone contacts the TFTP server to request the new image file.

The phone first requests the configuration file SEPxxxxxxxxxxxx.cnf.xml, where each xx is the two-digit lowercase hexadecimal representation of each integer in the MAC address. If the phone cannot find this file, it requests the configuration file XMLDefault.cnf.xml.

After the phone obtains the *.cnf.xml files, it requests a phone-specific profile file. If a phone cannot find this profile file, it requests the appropriate common profile file.

Communications Manager Administration that requires resetting the phone, the phone

“Overview of Configuring and Installing the

Communications Manager Administration Guide and

After the phone finds one of the profile files, or if it cannot find a profile file, it continues with its startup process.

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Related Topics

• Networking Protocols Used with Cisco Unified Wireless IP Phones, page 2-9

• Authentication Methods, page 2-16

• Encryption Methods, page 2-18

• Interacting with Cisco Unified Communications Manager, page 2-14

• Components of the VoIP Wireless Network, page 2-9

• VoIP WLAN Configuration, page 2-21

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VoIP WLAN Configuration

This section provides configuration guidelines for deploying wireless IP phones in the WLAN and includes these topics:

• Wireless Network Requirements for VoIP, page 2-21

• VoIP WLAN Configuration, page 2-21

Wireless Network Requirements for VoIP

The Cisco Unified Wireless IP Phone 7925G supports Cisco Aironet APs (APs) that can run Cisco IOS in autonomous mode and APs that run in lightweight mode with lightweight AP protocol (LWAPP) and use a Cisco Unified wireless LAN controller. mode in the WLAN.

When configuring VoWLAN, use APs that run Cisco IOS Release 12.3(8)JA or later. It is recommended that Cisco Aironet 1130AG, 1240AG, 1250 series APs run Cisco IOS Release 12.3(4g)JA1 or later.

Controllers should be running version 4.0217.0 (minimum) or version 4.2.61.0 or later, which is recommended. The controllers should have Cisco IOS Release 12.3(8)JX or later configured also.

VoIP WLAN Configuration

Table 2-8 lists the supported AP models and operation

Note Voice over the wireless LAN (VoWLAN) does not currently support MESH technology such as Cisco

Aironet 1500 Series Lightweight Outdoor Mesh APs or third-party APs are not supported.

Ta b l e 2-8 Supported APs and Modes

AP Models Autonomous Mode Lightweight Mode

Cisco Aironet 500 Series Yes Yes

Cisco Aironet 1100 Series Yes Yes

Cisco Aironet 1130AG Series Yes Yes

Cisco Aironet 1200 Series Yes Yes

Cisco Aironet 1230 Series Yes Yes

Cisco Aironet 1240AG Series Yes Yes

Cisco Aironet 1250 Series Yes Yes

Cisco Aironet 1300 Series Yes Yes

Cisco 1000 Series Lightweight No Yes

Note Be aware that Wi-Fi compliant APs that are manufactured by third-party vendors can function with the

Cisco

Unified Wireless IP Phone 7925G, but might not support key features such as Dynamic Transmit

Power Control (DTPC), ARP-caching, LEAP/EAP-FAST, QBSS, U-APSD, 802.11d and 802.11h.

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Site Survey Verification

Configuring the Wireless Network for Voice

This section identifies key AP configuration options that are required for optimal voice performance. This is not a complete list of configuration steps or options for deploying APs such as the Cisco Aironet APs. For more information about configuring your AP, refer to the appropriate Cisco installation and configuration guide for your model or the documentation for your AP.

Note When deploying the Cisco Unified Wireless IP Phone 7925G with World regulatory domain

(CP-7925GW-K9), you must enable the APs for world mode (802.11d). The world model phone gets the channels and power information from the AP.

To see a list of configuration tasks for the Cisco Aironet AP, controller, and Ethernet switch when setting up VoIP on the WLAN, see the

Configuration Tip for Cisco Aironet APs

If you are using EAP-FAST, you must increase the EAP request (802.1x) timeout to at least 20 seconds to ensure that the phone gets the PAC credentials successfully.

To change the request timeout on the controller, follow these steps:

“Configuring a Wireless Network” section on page D-1.

Chapter 2 Overview of the VoIP Wireless Network

Aironet AP

Procedure

Step 1 Use SSH or Telnet to access the Cisco Unified wireless LAN controller.

Step 2 Enter config advanced eap request-timeout 20

Step 3 Enter save config

Step 4 Enter y to confirm.

Site Survey Verification

Before the initial deployment of wireless phones in the WLAN, it is recommended that a site survey is performed to verify that the APs are providing adequate coverage and that wireless phones can roam from one AP to another with no audio problems. After the initial deployment, it is a good practice to perform site surveys at regular intervals to ensure continued coverage and roaming.

From the Cisco Unified Wireless IP Phone 7925G, you can use the Neighbor List utility or Site Survey utility from the SETTINGS > Status menu.

The Neighbor List utility provides information about the current AP and the closest neighbors tracked by the phone. For more information see

The Site Survey utility produces a report, written as a temporary HTML file, upon termination of the survey. This Site Survey Report is accessible from the phone web page for viewing or forwarding to Cisco

TAC for troubleshooting purposes. For more information, see Using the Site Survey Utility,

page 2-24.

Using the Neighbor List Utility, page 2-23.

You should use the wireless IP phone and the Aironet Client Utility (ACU) to verify that the signal range and transmission power provide adequate coverage for roaming phones.

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Use the following topics for information about performing the site survey:

• Performing a Site Survey Verification, page 2-23

• Using the Neighbor List Utility, page 2-23

• Using the Site Survey Utility, page 2-24

Performing a Site Survey Verification

Perform these tasks to verify wireless voice network operation. Check that the wireless IP phones:

1. Associate with all APs in the WLAN.

2. Authenticate with all APs in the WLAN.

3. Register with Cisco Unified Communications Manager.

4. Can make stationary phone calls with good quality audio.

5. Can make roaming phone calls with good quality audio and no disconnections.

6. Can place multiple calls, especially in areas designated for high density use.

After phones are installed, request that users report any problems when using their wireless IP phones.

Site Survey Verification

When you perform a site survey verification and encounter problems, see the Chapter 10,

“Troubleshooting the Cisco Unified Wireless IP Phone 7925G” for assistance with finding the cause of

the problem.

Related Topics

• Using the Neighbor List Utility, page 2-23

• Using the Site Survey Utility, page 2-24

Using the Neighbor List Utility

The Neighbor List utility displays a list of the current AP and the closest neighbors tracked by the phone. The phone typically does not scan while it is idle, so often there is only one entry, which is the currently associated AP, in the list.

To use the Neighbor List utility, follow these steps:

Procedure

Step 1 Configure the Cisco Unified Wireless IP Phone 7925G with the same SSID and

encryption/authentication settings as the APs.

Step 2 Power on the phone so that it associates with the WLAN.

Step 3 Choose SETTINGS > Status > Neighbor List.

The phone displays the current AP and the closest neighbors. For example:

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Site Survey Verification

Step 4 To see more information about an AP, scroll to the desired line and press Details. The following is an

Step 5 To verify the ability to roam between APs, walk through all areas where phones are used and take

Step 6 Adjust AP and antenna placement and AP power settings to provide approximately 20 percent coverage

Chapter 2 Overview of the VoIP Wireless Network

SSID: abcd

Channel

Channel BSSID RSSI

Utilization

01 19:50 -38 50

06 cf:d0 -51 38

11 7b:b0 -42 61

example of the details for a specific AP:

SSID: abcd Channel:06 BSSID: 00:13:1a:16:cf:d0 RSSI:-51 CU:38

readings. Approach areas from different directions to assure successful roaming conditions.

overlap.

Using the Site Survey Utility

The Site Survey utility is used to actively and passively scan the wireless medium across all channels and locate APs that belong to the Basic Service Set (BSS). The results of the scans are then used help to identify areas of low coverage, if any, and to determine whether the APs are configured consistently as recommended in the Cisco deployment guidelines.

When you start the Site Survey utility, the phone disassociates from the current AP and remains disassociated for the duration of the operation.

For more information, see Viewing the Site Survey Report on the Web, page 4-38.

Caution During Site Survey, both active and passive scans are performed at a rapid rate. These scans will result

in the phone battery life depleting faster than normal and might cause disruption to the wireless medium.

To use the Site Survey utility, follow these steps:

Procedure

Step 1 Configure the Cisco Unified Wireless IP Phone 7925G with the same SSID and

encryption/authentication settings as the APs.

Step 2 Power on the phone so that it associates with the WLAN.

Step 3 Choose SETTINGS > Status > Site Survey.

The phone displays a list of APs within range that have the same SSID and security settings as the phone. To see more information about an AP, scroll to the desired line and press Details.

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Chapter 2 Overview of the VoIP Wireless Network

Step 4 To verify the ability to roam between APs, walk through all areas where phones are used and take

readings. Approach areas from different directions to assure successful roaming conditions.

Step 5 Adjust AP and antenna placement and AP power settings to provide approximately 20 percent coverage

overlap.

Step 6 When you terminate the site survey, a report is generated for your viewing from the phone web page.

For more information, see

In addition to the Site Survey utility in the Cisco Unified Wireless IP Phone 7925G, you can also use the Cisco Aironet Client Utility Site Survey Utility from a laptop PC. Refer to the section on “Performing a Site Survey” in the for your system.

Related Topics

• Performing a Site Survey Verification, page 2-23

• Viewing the Site Survey Report on the Web, page 4-38

Site Survey Verification

Viewing the Site Survey Report on the Web, page 4-38.

Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide

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Setting Up the Cisco Unified Wireless IP Phone 7925G

This chapter includes the following topics, which help you install and configure the Cisco Unified Wireless IP

• Before You Begin, page 3-1

• Installing the Cisco Unified Wireless IP Phone 7925G, page 3-7

• Understanding the Phone Startup Process, page 3-17

Before You Begin

Before installing a Cisco Unified Wireless IP Phone 7925G, review the requirements in these sections:

• Network Requirements, page 3-1

CHA PTER

Phone 7925G on an IP telephony network:

• Methods for Adding Phones to Cisco Unified Communications Manager, page 3-2

• Device Support, page 3-5

• Safety Information, page 3-5

Network Requirements

For the Cisco Unified Wireless IP Phone 7925G to successfully operate as a Cisco Unified IP Phone endpoint, your network must support these requirements:

Voice over Wireless LAN

• Cisco Aironet Access Points (APs) configured to support Voice over WLAN (VoWLAN)

• Controllers and switches configured to support VoWLAN

• Security implemented for authenticating wireless voice devices and users

Note You must verify that your wireless network is configured properly for voice service. For more

information, see the “Performing a Site Survey Verification” section on page 2-23.

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VoIP Network

• Cisco routers and gateways configured for VoIP

• One of these call–control products installed and configured:

–

Cisco Unified Communications Manager Release 4.3, 5.1, 6.0(1), 6.1(1), or 7.0(1)

–

Cisco Unified Communications Manager Express 4.3 or later

• IP network configured to support DHCP or manual assignment of IP address, gateway, and subnet

mask

Related Topics

• Features Supported on the Cisco Unified Wireless IP Phone 7925G, page 1-6

• Understanding the Wireless LAN, page 2-1

• Methods for Adding Phones to Cisco Unified Communications Manager, page 3-2

• Installing the Cisco Unified Wireless IP Phone 7925G, page 3-7

• Powering On the Cisco Unified Wireless IP Phone 7925G, page 3-15

Methods for Adding Phones to Cisco Unified Communications Manager

Before installing the wireless IP phone, you must choose a method for adding phones to the Cisco

Unified Communications Manager database. Some methods require entering the MAC address of

the phone.

Ta b l e 3-1 Methods for Adding Phones to the Cisco Unified Communications Manager

Method

Auto-registration No Results in automatic assignment of

Auto-registration with the Tool for Auto-Registered Phones Support (TAPS)

BAT Yes Allows for simultaneous registration of

Cisco Unified Communications Manager Administration only

Table 3-1 provides an overview of these methods.

Database

Requires MAC Address?

No Requires auto-registration and Bulk

Yes Requires phones to be added

Notes

directory numbers

Administration Tool (BAT); updates information in the Cisco Unified IP Phone and in Cisco Unified

Communications Manager

Administration

multiple phones

individually

The following sections describe methods for adding phones:

• Adding Phones with Auto-Registration, page 3-3

• Adding Phones with Auto-Registration and TAPS, page 3-3

• Adding Phones with BAT, page 3-4

• Adding Phones with Cisco Unified Communications Manager Administration, page 3-4

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Adding Phones with Auto-Registration

Use auto-registration to enter phones into the Cisco Unified Communications Manager database without first gathering MAC Cisco

Unified Communications Manager automatically assigns the next available sequential directory

number (DN) to new phones during the initial phone startup process.

After registering the phones, you can modify settings, such as the DNs and device pools, by using Cisco

Unified Communications Manager Administration.

Note Auto-registration is disabled by default in Cisco Unified Communications Manager Administration.

You must enable and properly configure auto-registration before connecting any Cisco to the network. For information about enabling and configuring auto-registration, refer to Cisco Unified Communications Manager Administration Guide.

Related Topics

• Adding Phones with Auto-Registration and TAPS, page 3-3

• Adding Phones with BAT, page 3-4

addresses from the phones. When auto-registration is enabled,

Before You Begin

Unified IP Phone

• Adding Phones with Cisco Unified Communications Manager Administration, page 3-4

Adding Phones with Auto-Registration and TAPS

Use auto-registration and TAPS to add phones to the Cisco Unified Communications Manager database. Add the phones first by using BAT to the Cisco dummy MAC addresses. Then use TAPS to update MAC configurations for the phones.

To implement TAPS, dial a TAPS DN and follow voice prompts. When the process is complete, the phone has downloaded its DN and other settings. The correct MAC address for the phone is updated in Cisco

Unified Communications Manager Administration.

Note You must enable auto-registration in Cisco Unified Communications Manager Administration for TAPS

to function.

For Cisco Unified Communications Manager Release 5.0 and prior releases, refer to Bulk Administration

Tool User Guide for Cisco Unified TAPS. For Cisco Unified Communications Manager Release 6.0(1), 6.1(1), and 7.0(1) refer to Cisco Unified Communications Manager Bulk Administration Guide.

Related Topics

• Adding Phones with Auto-Registration, page 3-3

Communications Manager for detailed instructions about BAT and

Unified Communications Manager database with

addresses and download pre-defined

• Adding Phones with Cisco Unified Communications Manager Administration, page 3-4

• Adding Phones with BAT, page 3-4

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Before You Begin

Adding Phones with BAT

Add a group of phones to the Cisco Unified Communications Manager database by using BAT. This tool performs batch operations, including registration, on multiple phones. You need the MAC addresses for each phone before you use BAT.

Table 3-2 describes how to determine the MAC address of the wireless IP phone.

Ta b l e 3-2 Determining the MAC Address of the Phone

Method For More Information

Choose SETTINGS > Model Information > MAC Address and look at the MAC Address

field.

Remove the battery and look on the back of the phone.

Note BAT is included in Cisco Unified Communications Manager 5.0 or later, but it is a plug-in for prior

releases.

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7925G

See “Viewing Model Information” section on

page 8-7

See the “Installing or Removing the Phone

Battery” section on page 3-8

For detailed instructions about using BAT, refer to the following documents:

• For Cisco Unified Communications Manager Release 5.0 and prior releases, refer to Bulk

Administration Tool User Guide for Cisco Unified

• For Cisco Unified Communications Manager Release 6.0(1), 6.1(1), and 7.0(1), refer to Cisco

Communications Manager.

Unified Communications Manager Bulk Administration Guide.

Note When using BAT to add Cisco Unified Wireless IP Phones, use the default setting for the phone load.

The phone load name includes symbols (-, _,.) and BAT does not permit symbols in an entry.

Related Topics

• Adding Phones with Auto-Registration, page 3-3

• Adding Phones with Auto-Registration and TAPS, page 3-3

• Adding Phones with Cisco Unified Communications Manager Administration, page 3-4

Adding Phones with Cisco Unified Communications Manager Administration

Add phones individually by using Cisco Unified Communications Manager Administration. To do so, obtain the MAC address for each phone before you begin. See the

Unified Communications Manager” section on page 3-2 for instructions.

Perform one of the following after collecting the MAC addresses:

• Cisco Unified Communications Manager 5.0, 6.0(1), 6.1(1), or 7.0(1)—Choose Device > Phone and

click Add New.

“Methods for Adding Phones to Cisco

• Cisco Unified Communications Manager 4.x—Choose Device > Add a New Device.

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For additional instructions and conceptual information about Cisco Unified Communications Manager, refer to Cisco Unified

Unified

Related Topics

• Adding Phones with Auto-Registration, page 3-3

• Adding Phones with Auto-Registration and TAPS, page 3-3

• Adding Phones with BAT, page 3-4

Communications Manager System Guide.

Communications Manager Administration Guide and to Cisco

Device Support

Cisco Unified Communications Manager Release 4.1, 4.2, 4.3, 5.1, 6.0, 6.1, and 7.0(1) require a device package or service release update installed to enable device support for the Cisco IP

Phone 7925G. Device packages including support for the Cisco Unified Wireless IP Phone 7925G are

available at

http://www.cisco.com/kobayashi/sw-center/sw-voice.shtml.

Before You Begin

Unified Wireless

Safety Information

Review the following warnings before installing the Cisco Unified IP Phone. To see translations of these warnings, refer to the

Phone 7920G and Peripheral Devices document that accompanied this device.

Warning

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device.

Statement 1071

Read the installation instructions before connecting the system to the power source.

This equipment will not be able to access emergency services during a power outage because of reliance on utility power for normal operation. Alternative arrangements should be made for access to emergency services. Access to emergency services can be affected by any call-barring function of this equipment.

Regulatory Compliance and Safety Information for the Cisco Unified Wireless IP

Statement 1004

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Do not use the Cisco Unified Wireless IP Phone 7925G in hazardous environments such as areas where high levels of explosive gas may be present. Check with the site safety engineer before using any type of wireless device in such an environment.

The plug-socket combination for the battery charger must be accessible at all times, because it serves as the main disconnecting device.

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Warning

The battery charger requires short-circuit (overcurrent) protection to be provided as part of the building installation. Install only in accordance with national and local wiring regulations.

1045

Warning

The power supply must be placed indoors.

Ultimate disposal of this product should be handled according to all national laws and regulations.

Statement 1040

Warning

Telephone receivers produce a magnetic field that can attract small magnetic objects such as pins and staples. To avoid the possibility of injury, do not place the handset where such objects may be picked up.

Battery Safety Notices

The following battery safety notices apply to the batteries that are approved by the Cisco Unified Wireless IP

Warning

There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions.

Statement

Statement 331

Phone 7925G manufacturer.

Statement 1015

3-6

Warning

Caution The battery pack is intended for use only with this device.

Caution Do not disassemble, crush, puncture, or incinerate the battery pack.

Caution To avoid risk of fire, burns, or damage to your battery pack, do not allow a metal object to touch the

Do not dispose of the battery pack in fire or water. The battery may explode if placed in a fire.

battery contacts.

Caution Handle a damaged or leaking battery with extreme care. If you come in contact with the electrolyte, wash

the exposed area with soap and water. If the electrolyte has come in contact the eye, flush the eye with water for 15 minutes and seek medical attention.

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Caution Do not charge the battery pack if the ambient temperature exceeds 104 degrees Fahrenheit (40 degrees

Celsius).

Caution Do not expose the battery pack to high storage temperatures (above 140 degrees Fahrenheit, 60 degrees

Celsius).

Caution When discarding a battery pack, contact your local waste disposal provider regarding local restrictions

on the disposal or recycling of batteries.

To obtain a replacement battery, contact your local dealer. Use only the batteries that have the following Cisco part numbers.

Standard battery—CP-BATT-7925G-STD Extended battery—CP-BATT-7925G-EXT

Installing the Cisco Unified Wireless IP Phone 7925G

Caution Use only the Cisco power supply. If you must replace your power supply, refer to the list of Cisco part

numbers.

Australia—CP-PWR-7925G-AU Central Europe—CP-PWR-7925G-CE China—CP-PWR-7925G-CN Japan—CP-PWR-7925G-JP North America—CP-PWR-7925G-NA United Kingdom—CP-PWR-7925G-UK

Related Topics

• Network Requirements, page 3-1

• Providing Power to the Phone, page 3-7

Installing the Cisco Unified Wireless IP Phone 7925G

After setting up the wireless network to support voice communications and configuring the wireless section includes the following installation information:

• Providing Power to the Phone, page 3-7

• Configuring Wireless LAN Settings for the Cisco Unified Wireless IP Phone 7925G, page 3-13

• Using a Headset, page 3-13

IP phones in Cisco Unified Communications Manager, you are ready to install the phones. This

Providing Power to the Phone

The Cisco Unified Wireless IP Phone 7925G uses a battery for power. Table 3-3 lists the types of batteries available for the wireless IP phone and the maximum talk and standby times.

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Ta b l e 3-3 Batteries Available for the Cisco Unified Wireless IP Phone 7925G

Ty pe Technology Talk Time Standby Time

Standard Lithium ion (Li-ion) Up to 9.5 hrs Up to 180 hrs

Extended Li-ion Up to 13 hrs Up to 240 hrs

Use U-APSD for talk-time power save mode. Also 5 GHz talk time is reduced up to 30 min for standard and up to 2 hours for extended. Use of 802.11b/g and a Bluetooth headset can reduce the talk time by 40-50 percent. To extend talk-time battery life, the Cisco Unified Wireless IP Phone 7925G can use PS-POLL power save methods. The Cisco Unified Wireless IP Phone 7925G will use either U-APSD or PS-POLL when in idle (no active phone call).

When an AP supports the Cisco Client Extensions (CCX) proxy ARP information element, the idle battery life is optimized. If the AP does not support CCX or proxy ARP is not enabled, then the idle battery life is up to fifty percent less.

Table 3-4 shows the charging time for the two types of batteries. You can stop charging the battery when

the battery is fully charged. Lithium ion batteries can be partially charged without shortening the battery life. Batteries should handle up to 4000 recharges.

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7925G

Note Battery life varies because of environmental factors and Bluetooth use.

Ta b l e 3-4 Battery Charging Time Information

Battery Type Power Supply Connected to Phone

Standard 2 hours 5 hours

Extended 3 hours 7 hours

The following sections provide information about the battery and charging the phone:

• Installing or Removing the Phone Battery, page 3-8

• Using the Power Supply to Charge the Phone Battery, page 3-11

• Using the USB Cable and PC to Charge the Battery, page 3-12

Installing or Removing the Phone Battery

To install the battery in the Cisco Unified Wireless IP Phone use Figure 3-1, and follow these steps:

Procedure

Phone Connected to PC and USB Cable

Step 1 Remove the cover on the back of the phone as shown in Figure 3-1.

Step 2 To install the battery, insert the battery catches in the corresponding slots at the bottom of the

Cisco

Unified Wireless IP Phone 7925G. Ensure that the metal contacts on the battery and the phone are

facing each other.

Step 3 Press the battery to the body of the phone until it locks into place. See Figure 3-2.

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187525

CISCO

Battery

Step 4 To remove the battery, press up on the locking catch, then lift and remove the battery as shown in

Figure 3-3.

Figure 3-1 Removal of Cover to Install the Battery

Installing the Cisco Unified Wireless IP Phone 7925G

1 Locking catch

2 Battery Cover

Figure 3-2 Install the Battery

1 Battery Insertion Slots

2 Battery

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Installing the Cisco Unified Wireless IP Phone 7925G

Figure 3-3 Replace the Back Cover

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7925G

CISCO

187527

1 Cover Insertion Slots

2 Cover

Note The MAC address for each Cisco Unified Wireless IP Phone 7925G appears on a printed label on the

back of the phone underneath the battery.

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Using the Power Supply to Charge the Phone Battery

To charge the phone battery quickly, follow the steps in Figure 3-4.

Figure 3-4 Charging the Phone Battery

Installing the Cisco Unified Wireless IP Phone 7925G

187528

1 Lift the mini-USB port cover on the bottom of phone.

2 Swing the port cover to one side.

3 Insert the AC power supply mini-USB connector in the port.

4 Insert the AC plug adapter in the slot on the power supply.

5 Insert the AC power supply in a wall outlet.

6 Indicator light—Indicates the charging status:

• Red—Battery charging in process.

• Green—Battery charging is complete.

Note You can use the phone while the battery is being charged. For charging times, see Table 3-4.

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Installing the Cisco Unified Wireless IP Phone 7925G

Using the USB Cable and PC to Charge the Battery

Charge the phone battery by using a USB cable connected to your PC. Follow the steps in Figure 3-5.

Figure 3-5 Charging the Phone Battery Using the USB Cable and PC

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7925G

1 Insert the phone connector on the USB cable into the phone.

2 Insert the USB A-type connector into the USB port on your PC.

3 Monitor the indicator light after the phone briefly displays “USB Connected” on the status

line.

You may see the “Found New Hardware Wizard” To stop the wizard from opening when connecting to USB port, perform the following steps:

1. Click Next to use the wizard dialog box.

2. In the Update New Software dialog, click No, not this time, and click Next.

3. Click Install the Software automatically (Recommended) and click Next.

4. After a few moments, the Cannot Install This Hardware dialog displays. Click Don't

prompt me again to install this software.

Note While the battery is charging, the indicator light is red. When the battery is fully charged, the indicator

5. Click Finish to close the dialog box.

light turns green. Charging times are longer when you use this method and are described in Table 3-4.

Related Topics

• Powering On the Cisco Unified Wireless IP Phone 7925G, page 3-15

• Installing or Removing the Phone Battery, page 3-8

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Installing the Cisco Unified Wireless IP Phone 7925G

• Using the Power Supply to Charge the Phone Battery, page 3-11

Configuring Wireless LAN Settings for the Cisco Unified Wireless IP Phone 7925G

Before the phone can connect to the WLAN, you must configure the network profile for the phone with the WLAN settings. You can use two methods for setting up the network profiles:

• Cisco Unified Wireless IP Phone 7925G Web Pages, page 3-13

• Network Profile Menu on the Cisco Unified Wireless IP Phone 7925G, page 3-13

Cisco Unified Wireless IP Phone 7925G Web Pages

You can access the Cisco Unified Wireless IP Phone 7925G web pages to set up the WLAN settings in the network profile. For a new phone with the factory default settings, you must use the USB cable to connect the phone to your PC. For more information and instructions, see

Unified Wireless IP Phone 7925G Web Pages.”

Chapter 4, “Using the Cisco

Network Profile Menu on the Cisco Unified Wireless IP Phone 7925G

You can use the Settings menu on the phone and access the Network Profiles menu to set up the network configuration and the WLAN configuration. For more information and instructions, see

“Configuring Settings on the Cisco Unified Wireless IP Phone 7925G.”

Using a Headset

Although Cisco Systems performs some internal testing of third-party wired and Bluetooth wireless headsets for use with the Cisco Unified Wireless IP Phone 7925G, Cisco does not certify or support products from headset or handset vendors. Because of the inherent environmental and hardware inconsistencies in the locations where Cisco Unified IP Phones are deployed, there is not a single “best” solution that is optimal for all environments. Cisco recommends that customers test the headsets that work best in their environment before deploying a large number of units in their network.

Cisco Systems recommends the use of good quality external devices, like headsets that are screened against unwanted radio frequency (RF) and audio frequency (AF) signals. Depending on the quality of these devices and their proximity to other devices such as cell phones and two-way radios, some audio noise may still occur. See information.

The primary reason that a particular headset would be inappropriate for the Cisco Unified IP Phone is the potential for an audible hum. This hum can be heard by either the remote party or by both the remote party and you, the Cisco Unified IP Phone user. Some potential humming or buzzing sounds can be caused by a range of outside sources, for example, electric lights, being near electric motors, large PC monitors. In some instances, the mechanics or electronics of various headsets can cause remote parties to hear an echo of their own voice when they speak to Cisco Unified IP Phone users.

Using External Devices with Cisco Unified IP Phones, page 3-15 for more

Chapter 5,

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Installing the Cisco Unified Wireless IP Phone 7925G

Connecting Headsets

To connect a headset to the Cisco Unified Wireless IP Phone 7925G, plug it into the headset port on the right side of the phone.

You can use the headset with all of the features on the Cisco Unified Wireless IP Phone 7925G, including the Volume and Mute buttons. Use these buttons to adjust the ear piece volume and to mute the speech path from the headset microphone.

Using Bluetooth Wireless Headsets

The Cisco Unified Wireless IP Phone 7925G supports Bluetooth Class 2 technology with Hands Free version 1.5 when the headsets support Bluetooth. Bluetooth enables low bandwidth wireless connections within a range of 10 meters. The best performance is in the 1 to 2 meter range.

There can be a potential interference issues. It is recommended that you:

• Reduce the proximity of other 802.11b/g devices, Bluetooth devices, microwave ovens, and large

metal objects.

• Use the Cisco Unified Wireless IP Phone 7925G on the same side of the body as the

Bluetooth-enabled headset.

Using Bluetooth wireless headsets will likely increase battery power consumption on your phone and might result in reducing battery life.

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7925G

Pairing Headsets

Note It is recommended that users read the headset user guide for more information about pairing and

For a Bluetooth wireless headset to work, it does not need to be within direct line-of-sight of the phone, but some barriers, such as walls or doors, and interference from other electronic devices, could affect the connection.

Unified Wireless IP Phone 7925G can be paired

with more than one headset at a time. Pairing is typically performed once for each headset.

connecting the headsets.

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Audio Quality Subjective to the User

Beyond the physical, mechanical and technical performance, the audio portion of a headset must sound good to the user and to the party on the far end. Sound is subjective and Cisco cannot guarantee the performance of any headsets, but some of the headsets on the sites listed below have been reported to perform well on Cisco Unified IP Phones.

Nevertheless, it is ultimately the customer's responsibility to test this equipment in their own environment to determine suitable performance.

For information about wired and Bluetooth wireless headsets for your phone, see the Cisco Unified Wireless IP Phone 7925G Accessory Guide and these web sites:

• http://www.plantronics.com

• http://www.jabra.com

• http://www.jawbone.com

Using External Devices with Cisco Unified IP Phones

The following information applies when you use external devices with the Cisco Unified IP Phone:

Powering On the Cisco Unified Wireless IP Phone 7925G

• Cisco recommends the use of good quality external devices (speakers, microphones, and headsets)

that are shielded (screened) against unwanted radio frequency (RF) and audio frequency (AF)

signals.

• Depending on the quality of these devices and the proximity to other devices such as mobile phones

or two-way radios, some audio noise may still occur. In these cases, Cisco recommends that you

take one or more of the following actions:

–

Move the external device away from the source of the RF or AF signals.

–

Route the external device cables away from the source of the RF or AF signals.

–

Use shielded cables for the external device, or use cables with a better shield and connector.

–

Shorten the length of the external device cable.

–

Apply ferrites or other such devices on the cables for the external device.

Cisco cannot guarantee the performance of the system because Cisco has no control over the quality of external devices, cables, and connectors. The system will perform adequately when suitable devices are attached using good quality cables and connectors.

Caution In European Union countries, use only external speakers, microphones, and headsets that are fully

compliant with the EMC Directive [89/336/EC].

Powering On the Cisco Unified Wireless IP Phone 7925G

After charging the battery and configuring the wireless IP phone, you are ready to power on the phone and connect to the WLAN. Use the following sections for more information about starting up the phone.

• Active and Standby Phone Modes, page 3-16

• Understanding the Phone Startup Process, page 3-17

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Powering On the Cisco Unified Wireless IP Phone 7925G

To power on the Cisco Unified Wireless IP Phone 7925G, press and hold the Power On button until the phone begins its startup process by cycling through these steps:

1. The phone displays the Cisco Systems screen.

2. The phone screen displays these messages as the phone starts up:

• Locating Network Services

• Configuring IP

• Network Up

• Configuring Unified CMList

• Registering

3. The following information displays on the main phone screen:

• Current time and date

• Primary directory number

• Main screen icons for four menus and Help

• “Your current options” on status line

• Softkey labels (Messages and Options)

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7925G

When the phone passes through these stages with no errors, the phone started up properly. Now the phone is in standby mode and is ready to place or receive calls.

The signal icon in the upper left corner shows the strength of the signal between the wireless access point and the phone. The phone must have an adequate signal to successfully place or receive calls. If the signal icon displays only one bar, the weak signal can cause problems with phone performance.

If the phone does not complete these steps successfully, see the “Resolving Startup and Connectivity

Problems” section on page 10-1.

Related Topics

• Active and Standby Phone Modes, page 3-16

• Understanding the Phone Startup Process, page 3-17

Active and Standby Phone Modes

When the Cisco Unified Wireless IP Phone 7925G is powered on, it can be in one of these two modes:

• Active mode

• Standby mode

Active Mode

The phone is in active mode when there is an active RTP stream. When the phone is performing one of these actions, it is consuming power:

• Connected to an active call

• Scanning for channels

• Sending CDP packets

• Sending keep-alive messages

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• Reregistering with Cisco Unified Communications Manager

The standard battery provides up to 11.5 hours of talk time in active mode and the extended battery provides up to 15.5 hours of talk time.

Standby Mode

The phone goes into standby mode two seconds after a scan is complete. The phone awakes from standby mode in response to these events:

• Pressing keys on the keypad

• Roaming between APs

• Power cycling the phone

• Losing network connectivity

• Losing RF connectivity

• Transmitting scheduled CDP or keep-alive packets.

The standard battery provides up to 150 hours of standby time and the extended battery provides up to 200 hours of standby time.

Understanding the Phone Startup Process

Related Topics

• Understanding the Phone Startup Process, page 3-17

• Resolving Startup and Connectivity Problems, page 10-1

Understanding the Phone Startup Process

When connecting to the wireless VoIP network, the Cisco Unified Wireless IP Phone 7925G goes through a standard startup process, as described in configuration, not all of these steps may occur on your wireless IP phone.

Ta b l e 3-5 Cisco Unified Wireless IP Phone Startup Process

Step Description Related Topics

1. Powering on the phone The Cisco Unified Wireless IP Phone 7925G has non-volatile Flash memory in which it stores firmware images and user-defined preferences. At startup, the phone runs a bootstrap loader that loads a phone image stored in Flash memory. Using this image, the phone initializes its software and hardware.

2. Scanning for an access

point

The Cisco Unified Wireless IP Phone 7925G scans the RF coverage area with its radio. The phone searches its network profiles and scans for access points that have a matching SSID and authentication type. The phone associates with the access point with the highest RSSI that matches with its network profile.

Table 3-5. Depending on your specific network

Providing Power to the Phone, page 3-7

Resolving Startup and Connectivity Problems, page 10-1

Interacting with Cisco Unified Wireless APs, page 2-11

Resolving Startup and Connectivity Problems, page 10-1

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Understanding the Phone Startup Process

Table 3-5 Cisco Unified Wireless IP Phone Startup Process (continued)

Step Description Related Topics

3. Authenticating with access point

The Cisco Unified Wireless IP Phone 7925G begins the authenticating process.

• If set for Open, then any device can authenticate to the

Authentication Methods, page 2-16

access point. For added security, static WEP encryption might optionally be used.

• If set to Shared Key, the phone encrypts the challenge

text using the WEP key and the access point must verify that the WEP key was used to encrypt the challenge text before network access is available.

• If set for LEAP or EAP-FAST, then the user name

and password are authenticated by the RADIUS server before network access is available.

• If set for Auto (AKM), the phone looks for an access

point with one of the following key management options enabled:

–

WPA, WPA2, or CCKM—The username and password are authenticated by the RADIUS server before network access is available.

–

WPA-Pre-shared key, WPA2-Pre-shared key—The phone authenticates with the access point using the pre-shared key.

4. Configuring IP network If the wireless IP phone is using DHCP to obtain an IP address, the phone queries the DHCP server to obtain one. If you are not using DHCP in your network, you must assign a static IP address to each phone locally.

In addition to assigning an IP address, the DHCP server directs the wireless IP

phone to a TFTP server. If the phone has a statically defined IP address, you must configure the TFTP server IP address locally on the phone; the phone then contacts the TFTP server directly.

5. Downloading Load ID The wireless IP phone checks to verify that the proper firmware is installed or if new firmware is available to download.

Cisco Unified Communications Manager informs devices using.cnf or.cnf.xml format configuration files of their load ID. Devices using.xml format configuration files receive the load ID in the configuration file.

6. Downloading config file The TFTP server has configuration files and profile files. A configuration file includes parameters for connecting to Cisco Unified

Communications Manager and information about which image load a phone should be running. A profile file contains various parameters and values for phone and network settings.

• Configuring DHCP

Settings, page 5-6

• Disabling DHCP, page 5-6

• Resolving Startup and

Connectivity Problems, page 10-1

• Phone Configuration Files

and Profile Files, page 2-14

• Configuring an Alternate

TFTP Server, page 5-7

• Phone Configuration Files

and Profile Files, page 2-14

• Resolving Startup and

Connectivity Problems, page 10-1

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Understanding the Phone Startup Process

Table 3-5 Cisco Unified Wireless IP Phone Startup Process (continued)

Step Description Related Topics

7. Connecting to Cisco Unified Communications Manager

8. Registering to Cisco Unified Communications Manager

Related Topics

• Configuring Cisco Unified Wireless IP Phones in Cisco Unified Communications Manager,

The configuration file defines how the Cisco Unified Unified

IP Phone communicates with Cisco

Communications Manager. After obtaining the file from the TFTP server, the phone attempts to make a TCP connection to the highest priority Cisco Unified

Communications Manager on the list.

If the phone was manually added to the database, Cisco Unified

Communications Manager identifies and registers the phone. If the phone was not manually added to the database and auto-registration is enabled in Cisco Unified auto-register itself in the Cisco Unified

Communications Manager, the phone attempts to

Communications

Manager database.

• Interacting with Cisco

Unified Communications Manager, page 2-14

• Resolving Startup and

Connectivity Problems, page 10-1

• Overview of Configuring

and Installing the Cisco Unified Wireless IP Phone 7925G, page 1-14

• Adding Users to Cisco

Unified Communications Manager, page 7-19

page 7-1

• Phone Configuration Files and Profile Files, page 2-14

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CHA PTER

Using the Cisco Unified Wireless IP Phone 7925G Web Pages

This chapter describes how to set up your PC to configure a Cisco Unified Wireless IP Phone 7925G by using a USB connector and how to remotely access a configured phone over the WLAN. It contains the following sections:

• Setting Up Your PC to Configure the Phones, page 4-1

• Updating the Phones Remotely, page 4-4

• Configuring Network Profiles, page 4-8

• Configuring USB Settings, page 4-26

• Configuring Trace Settings, page 4-27

• Configuring the Phone Book, page 4-29

• Configuring Wavelink Settings, page 4-29

• Using System Settings, page 4-34

Setting Up Your PC to Configure the Phones

To setup new phones, use your PC and USB connection to enter the initial configuration for the wireless network settings and network profiles. To save time during initial deployment, you can create a standard network profile template and export it to several phones. For more information, see the

for Phone Configuration” section on page 4-34.

Before you can configure phones by using the USB connection, you must install drivers and set up the USB ports on the phone and PC.

Your PC must have one of the following operating systems:

• Windows 2000 Professional

• Windows XP

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Installing the USB Drivers

To install the drivers on your PC, perform the following steps:

Procedure

Step 1 Log into Cisco.com.

Step 2 Download the installation package and “read me” file for the USB drivers from this location:

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

Note Before proceeding, review the “read me” file for specific instructions for your PC operating

system.

Step 3 Double-click on the USB-Install-7925.1-0-2.exe file to start the installation program.

Step 4 Follow the prompts in the InstallShield Wizard.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Note If you receive a Hardware Installation warning message stating that the software has not passed

Microsoft Windows Logo testing, click Continue.

Step 5 The driver installation is complete when you see the Finished screen. You can close the wizard.

Step 6 Plug the USB cable into the USB port on the PC and into the USB connector on the phone.

The Found New Hardware Wizard dialog opens.

Step 7 To update the new software, click the button next to Yes, this time only and click Next.

Step 8 Click the button next to Install the Software automatically (Recommended).

After 2-3 minutes, the software installs and a message appears on the task bar stating “Found New Hardware - Software installed and ready to use.”

Step 9 Click Finish when the installation is complete.

The phone briefly displays “USB Connected” on the status line.

Configuring the USB LAN on the PC

To configure the USB LAN connection on your PC, follow these steps:

Procedure

Step 1 To setup the USB LAN connection, do one of the following:

• For Windows XP—Click Start > Settings > Control Panel > Network Connections.

• For Windows 2000—Click Start > Settings > Control Panel > Network and Connections.

Step 2 Locate and double-click the new LAN connection to open the Local Area Connection Status window,

then click Properties.

Step 3 Scroll to the Internet Protocol (TCP/IP) section and click Properties.

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Step 4 In the Internet Protocol (TCP/IP) Properties window, choose Use the following IP address:

Step 5 In the IP address field, enter a static IP address for the PC: 192.168.1. (1 through 254 except 100), for

example: 192.168.1.11

Note • By default, the Cisco Unified Wireless IP Phone 7925G is configured with 192.168.1.100 so you

cannot use this IP address for the PC.

• Make sure to use an IP address that is not in use on any other interface on the PC.

Step 6 Enter the subnet mask: 255.255.255.0

Step 7 Click OK to make the changes.

Related Topics

• Accessing the Phone Web Page, page 4-3

• Setting Configuration Privileges for the Phone Web Page, page 4-4

Setting Up Your PC to Configure the Phones

• Accessing the Configuration Web Page for a Phone, page 4-5

• Summary Information on the Home Web Page, page 4-7

Accessing the Phone Web Page

After setting up the USB interface on the PC, you are ready to use the USB cable connection to the phone to access the phone web pages.

To access the phone web pages, follow these steps:

Procedure

Step 1 Open a Windows browser.

Step 2 In the address field, enter https://192.168.1.100 to locate the wireless IP phone web page.

Note When the Security Alert dialog box displays a notice to accept the Trust Certificate, click Yes

or Always to accept the application.

The Summary web page for the phone displays. See Table 4-2 for details about this web page.

Step 3 Use the hyperlinks in the left column of the web page to configure settings for the phones. For

information, see these sections:

• Configuring Network Profiles, page 4-8

• Configuring USB Settings, page 4-26

• Configuring Trace Settings, page 4-27

• Configuring Wavelink Settings, page 4-29

• Configuring the Phone Book, page 4-29

• Using System Settings, page 4-34

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Updating the Phones Remotely

Step 4 After entering the new settings, disconnect the USB cable from the phone. The settings are active

immediately.

Step 5 Check that the phone can access the network successfully.

Using the USB Cable to Configure Phones

You are ready to use the USB cable to set up other phones. Before plugging the USB cable into another phone, wait approximately 12-15 seconds for the USB interface on the PC to shut down.

To connect to another phone, follow these steps:

Procedure

Step 1 Plug the USB cable into a Cisco Unified Wireless IP Phone 7925G.

The phone briefly displays “USB Connected” on the status line.

Step 2 Access the web page for the new phone by following the steps in “Accessing the Phone Web Page”

section on page 4-3.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Related Topics

• Installing the USB Drivers, page 4-2

• Configuring the USB LAN on the PC, page 4-2

• Using the USB Cable to Configure Phones, page 4-4

• Accessing the Phone Web Page, page 4-3

Updating the Phones Remotely

You might have to update settings on a Cisco Unified Wireless IP Phone 7925G that is already configured and in use. You can use the wireless LAN to remotely access and configure these phones.

Use these sections for information about remotely updating phones:

• Setting Configuration Privileges for the Phone Web Page, page 4-4

• Accessing the Configuration Web Page for a Phone, page 4-5

Setting Configuration Privileges for the Phone Web Page

To make changes to the phone by using the web page, you must use Cisco Unified Communications Manager Administration to enable Web Access and Phone Book Web Access.

To allow configuration privileges, follow these steps:

Procedure

Step 1 Log into Cisco Unified Communications Manager Administration.

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Step 2 Search for the phone in Cisco Unified Communications Manager Administration by choosing Device >

Phone and enter search information such as the DN.

Step 3 Click on the DN of the phone that you want to set the privileges.

Step 4 Open the Phone Configuration window, scroll down to Product Specific Configuration Layout, and

enable these privileges:

• In the Web Access field, select Full from the drop-down menu.

• In the Phone Book Web Access field, select Allow Admin.

Step 5 Click Save to make the change.

Step 6 You must reset the phone to enable configuration privileges on the web pages for this phone.

Accessing the Configuration Web Page for a Phone

You can access the web page for any Cisco Unified Wireless IP Phone 7925G that is connected to the WLAN. Be sure the phone is powered on, connected and registered to a Cisco Unified Communications Manager server.

Updating the Phones Remotely

To access the web page for the Cisco Unified Wireless IP Phone 7925G follow these steps:

Procedure

Step 1 Log into the Cisco Unified Communications Manager Administration.

Step 2 Go to Device > Phone.

Step 3 Click Find. All of the phones display. If the phone is registered with a Cisco Unified Communications

Manager Administration, the IP address displays. The phone IP address is linked to the Home web page.

Step 4 Click on the Description field in the Phone Configuration window of Cisco Unified Communications

Manager Administration. The Device Information section displays.

Step 5 Go to the Web Access field in the Product Specific Configuration Layout and change the parameter to

Full. This will give you full access to all of the web pages.

Step 6 From the Phone Configuration window, click on the linked IP address. The Home web page displays.

There are two sections displayed on the Home web page: setup menus (left) and summary information (right).

Table 4-1 shows the available Home web page menus, from which you can configure network

profiles, USB settings, trace settings, Wavelink settings, and certificates. Table 4-2 contains the phone summary information.

Or if you already know the IP address, you can open a web browser and enter the following URL. The IP_address variable is the IP address of the Cisco

Unified IP Phone:

https://<IP_address>/index.html

Note When the Security Alert dialog box displays a notice to accept the Trust Certificate, click Yes

or Always to accept the application.

Step 7 Log into the Home web page with the default username: admin and enter the default password: Cisco.

You may need to log into additional windows to configure other options.

Step 8 Make changes to configurable pages as needed.

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Step 9 Return to the Phone Configuration page in Cisco Unified Communications Manager Administration and

set the Web Access field back to Read Only or Disabled.

Step 10 Reset the phone from Cisco Unified Communications Manager to disable full access to the web pages.

Be sure to change the Web Access privileges and reset the phone to prevent users from making configuration changes on the phone web pages.

Note If a wireless IP phone was previously registered to Cisco Unified CallManager Administration Release

4.x, and you try to register to Cisco Unified Communications Manager Administration 5.x, 6.0(1),

7.0(1), the Phone Configuration web page password might be set to “Cisco.”

Ta b l e 4-1 Home Web Page Menus

Menu Related Information

Setup

• Network Profiles Configuring Network Profiles, page 4-8

• USB Settings Configuring USB Settings, page 4-26

• Trace Settings Configuring Trace Settings, page 4-27

• Wavelink Settings Configuring Wavelink Settings, page 4-29

• Certificates Configuring Wireless LAN Security, page 4-13

Configurations

Phone Book Configuring the Phone Book, page 4-29

Information

• Network Summary Information on the Home Web Page, page 4-7

• Wireless LAN

• Device

Statistics

• Wireless LAN Displays Rx and Tx statistics.

• Network Displays IP, TCP, and UDP statistics.

Stream Statistics

• Stream 1 Displays RTP statistics and voice quality metrics.

• Stream 2

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Table 4-1 Home Web Page Menus (continued)

Menu Related Information

System

• Trace Logs Using System Settings, page 4-34

• Backup Settings

• Phone Upgrade

• Change Password

• Site Survey

• Date and Time

• Phone Restart

Summary Information on the Home Web Page

The summary information for your phone displays on this section of the Home web page. It also displays the network and Cisco Unified Communications Manager information.

Updating the Phones Remotely

Table 4-2 describes these items.

Ta b l e 4-2 Summary Information

Item Description

Phone DN DN assigned to the phone.

Home: Summary

Wireless Information

Active Network Profile Name of the profile that the phone is currently using.

SSID SSID that the phone is currently using.

Access Point Name of the access point (AP) to which the phone is associated.

MAC Address MAC address of the phone.

Network Information

IP Address IP address of the phone.

Subnet Mask Subnet mask used by the phone.

Default Router IP address for the default gateway that the phone is using.

TFTP Server IP address for the Primary TFTP server that the phone is using.

Call Manager Information

Active Call Manager IP address for the Cisco Unified Communications Manager

server to which the phone is registered.

Phone Directory Number Primary DN for the phone.

Related Topics

• Accessing the Phone Web Page, page 4-3

• Configuring Network Profiles, page 4-8

• Configuring USB Settings, page 4-26

• Configuring Trace Settings, page 4-27

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Configuring Network Profiles

• Configuring the Phone Book, page 4-29

• Using System Settings, page 4-34

Configuring Network Profiles

You can configure up to four profiles for a phone to take advantage of WLAN environments. You can add names to the profiles and enable one or more of the profiles for the phone to use. The Network Profiles section of the web page displays the following information about each phone:

• Profile—Displays a list of four configurable profiles.

• Enabled—Indicates whether or not the profile is enabled.

• Name—Lists the name for the profile.

• SSID—Lists the SSID used by the profile.

• Status—Indicates which profiles are active or inactive.

To display the Network Profiles list, access the web page for the phone as described in the “Accessing

the Phone Web Page” section on page 4-3, and then click the Network Profiles hyperlink.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

For more information about configuring network profiles, see these sections:

• Configuring Wireless Settings in a Network Profile, page 4-12

• Configuring Wireless LAN Security, page 4-13

• Configuring IP Network Settings, page 4-23

• Configuring the Alternate TFTP Server, page 4-24

• Configuring Advanced Network Profile Settings, page 4-25

Network Profile Settings

You can configure the settings for a profile by using this web page area. You can also modify or view configured profiles from this web page area. profile settings and provides references for more information.

To display Network Profile (1-4) Settings, access the web page for the phone as described in the

“Accessing the Phone Web Page” section on page 4-3, and then click the Profile (1-4) hyperlink.

Ta b l e 4-3 Basic Network Profile Settings

Item Description For More Information, See...

Wireless

Profile Name Descriptive name for the profile. —

SSID Assigns the Service Set Identifier (SSID) to

Edit Profile Enables editing of the profile. —

Table 4-3 and Table 4-4 describe the basic and advanced

this profile. You must assign the same SSID to the phone that is also assigned to access points in the wireless network.

Associating to APs, page 2-12

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Table 4-3 Basic Network Profile Settings (continued)

Item Description For More Information, See...

Scan Mode Auto—Always scans when on a call. If idle

and signal strength is sufficient, the phone does not scan.

Continuous—Always scans.

Single AP—Only scans at power on or if the AP connection to the network is lost.

Call Power Save Mode Set for the type of power saving mode used in

the WLAN. Options are:

• U-APSD/PS-Poll

• None

802.11 Mode Determines the signal mode or priority for selecting signal modes available in the WLAN. Options are:

• 802.11 b/g—Use only 2.4 GHz band

Configuring Network Profiles

Associating to APs, page 2-12

802.11 Standards for WLAN Communications, page 2-3

• 802.11a—Use only 5 GHz band

• Auto, 802.11b/g preferred over 802.11a

(dual band)

• Auto, 802.11a preferred over 802.11b/g

(dual band)

Note The preferred band, if available, will

be used at power-on, but the phone may switch to the less preferred 2.4 GHz band, if available, and the preferred band is lost. Once the phone has connected to the less preferred band, it will not scan for the preferred band if the current band is acceptable, and may remain connected to the less preferred band.

• Auto, signal strength (RSSI)—Use

strongest signal in dual band environment

Restricted Data Rate Enables or disables the restriction of the

upstream and downstream PHY rates according to CCX V4 Traffic Stream Rate Set IE (S54.2.6). The default is disabled.

—

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Configuring Network Profiles

Table 4-3 Basic Network Profile Settings (continued)

Item Description For More Information, See...

WLAN Security

Authentication Mode Assigns the authentication mode Configuring Advanced

Export Security Credentials

Wireless Security Credentials

Username Assigns the network authentication username

Password Assigns the network authentication password

WPA Pre-shared Key Credentials

Pre-shared Key Type Determines the key type: Hex or ASCII Configuring the Pre-shared

Pre-shared Key Identifies the key

Wireless Encryption

Key Type Determines the encryption key type: Hex or

Encryption Key 1-4 Identifies the Transmit Key:

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Controls whether the wireless security credential data can be exported in the configuration file.

• True—Allows exporting the data

• False—Blocks exporting the data

for this profile

ASCII

Network Profile Settings, page 4-25

Configuring the Username and Password, page 4-15

Key, page 4-15

Setting Wireless Encryption, page 4-16

Certificate Options

Client EAP-TLS Certificate

Validate Server Certificate

• Encryption Key character string

• Key Size of 40 or 128 characters

Determines the certificate used for authentication:

• Manufacturing issued

• User installed

Enables the phone to use the server certificate. Two options: true or false.

Note Applies to PEAP only.

Installing Authentication Certificates for EAP-TLS Authentication, page 4-17

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Table 4-3 Basic Network Profile Settings (continued)

Item Description For More Information, See...

IP Network Configuration

Obtain IP address and DNS servers

Gets the IP address and DNS servers automatically.

automatically

Use the following IP address and DNS servers

TFTP

Obtain TFTP Servers

Disables DHCP and uses these static settings:

• IP Address

• Subnet Mask

• Default Router

• Primary DNS

• Secondary DNS

• Domain Name

Enables automatic assignment of TFTP servers Configuring the Alternate

Automatically

Use the following TFTP servers

Assigns static TFTP server IP addresses to:

• TFTP Server 1

Configuring Network Profiles

Configuring IP Network Settings, page 4-23

TFTP Server, page 4-24

• TFTP Server 2

Ta b l e 4-4 Advanced Network Profile Settings

TSPEC Settings

Minimum PHY Rate Minimum data rate that outbound traffic uses.

Modify this setting when Call Admission Control (CAC) is enabled.

Note Cisco APs support only PHY rates of 6,

Configuring Advanced Network Profile Settings, page 4-25

11, 12, or 24. The default is 12. If you use an access point that using 802.11b, the PHY rate must be configured to the supported rate.

Surplus Bandwidth Excess bandwidth beyond application

requirements

802.11G Power Settings

Channel Assigns the channels Configuring Advanced

Status Enabled—Identifies enabled channels in WLAN

to improve scanning for the phone.

Network Profile Settings, page 4-25

MaxTxPower Sets the maximum transmit power for the phone

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Table 4-4 Advanced Network Profile Settings (continued)

802.11A Power Settings

Channel Assigns the channels Configuring Advanced

Status Enabled—Identifies enabled channels in WLAN

Max Tx Power Sets the maximum transmit power for the phone

Note If you uncheck all channels in the 802.11g Power Settings window or 802.11a Power Settings window,

the phone will not be able to access the WLAN.

Related Topics

• Accessing the Phone Web Page, page 4-3

• Configuring Wireless LAN Security, page 4-13

• Setting the Wireless Security Credentials, page 4-15

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

to improve scanning for the phone

Network Profile Settings, page 4-25

• Setting Wireless Encryption, page 4-16

Configuring Wireless Settings in a Network Profile

You must configure wireless settings in a profile to enable the phone to access the wireless network. To configure the wireless settings, refer to

Procedure

Step 1 Choose the network profile that you want to configure.

Step 2 To give the profile a recognizable name, in the Profile Name field, enter a name up to 63 characters and

numbers in length.

Step 3 To identify the SSID that the phone uses to associate with access points, in the SSID field, enter an SSID

that is already configured in the WLAN.

Note The SSID is case sensitive; you must enter it exactly as configured in the network.

Step 4 To conserve battery power, in the Call Power Save Mode, choose the type (U-APSD or PS-Poll) and

option that is being used in the WLAN.

Step 5 Choose the signal mode or priority of signal modes in the 802.11 Mode field that is used by your WLAN,

Table 4-3 and follow these steps.

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Configuring Wireless LAN Security

The Cisco Unified Wireless IP Phone 7925G supports many types of authentication. Authentication methods might require a specific encryption method or you can choose between several encryption methods. When configuring a network profile, you can choose one of these authentication methods:

• Open—Provides access to all access points without WEP Key authentication/encryption.

• Open plus WEP—Provides access to all access points and authentication through the use of one or

more WEP Keys at the local access point.

• Shared Key plus WEP—Provides shared key authentication through the use of WEP Keys at the

local access point.

• LEAP— Exchanges a username and cryptographically secure password with a RADIUS server for

authentication in the network. LEAP is a Cisco proprietary version of EAP.

• EAP-FAST—Exchanges a username and password and with a RADIUS server for authentication in

the network.

• EAP-TLS—Uses a dynamic session-based WEP key derived from the client adapter and RADIUS

server to encrypt data and a client certificate for authentication. It uses PKI to secure communication to the RADIUS authentication server.

Configuring Network Profiles

• PEAP (EAP-MSCHAP V2)—Performs mutual authentication, but does not require a client

certificate on the phone. This method uses name and password authentication based on Microsoft MSCHAP V2 authentication.

• PEAP with Server Certificate Authentication—The Cisco Unified Wireless IP Phone 7925G can

validate the server certificate during the authentication handshakes over an 802.11 wireless link. This functionality is disabled by default and is enabled in Cisco

Unified Communications Manager

Administration.

• Auto (AKM)—Automatic authenticated key management in which the phone selects the AP and

type of key management scheme, which includes WPA, WPA2, WPA-Pre-shared key, WPA2-Pre-shared key, or CCKM (which uses a wireless domain server (WDS)).

Note When set to AKM mode, the phone uses LEAP for 802.1x type authentication methods (non-Pre-shared

key such as WPA, WPA2, or CCKM). AKM mode supports only authenticated key-management types (WPA, WPA2, WPA-PSK, WPA2-PSK, CCKM).

The type of authentication and encryption schemes that you are using with your WLAN determine how you set up the authentication, security, and encryption options in the network profiles for the Cisco Unified Wireless IP Phones.

Table 4-5 provides a list of supported authentication and encryption

schemes that you can configure on the Cisco Unified Wireless IP Phone 7925G.

Ta b l e 4-5 Authentication and Encryption Configuration Options

Authentication Mode Wireless Encryption Wireless Security Credentials

Open None None—access to all APs

Open plus WEP Static WEP

None—access to all APs

Shared Key plus WEP Static WEP

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Uses shared-key with AP

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Table 4-5 Authentication and Encryption Configuration Options (continued)

Authentication Mode Wireless Encryption Wireless Security Credentials

LEAP (with optional CCKM) Uses WEP Requires Username and Password

EAP-FAST (with optional CCKM) Uses WEP or TKIP Requires Username and Password EAP-TLS Uses WEP, TKIP, or AES Requires Username and Password

PEAP Uses WEP, TKIP, or AES Requires Username and Password

Auto (AKM) with CCKM Uses TKIP or AES Requires Username and Password

Auto (AKM) with WPA (with optional CCKM)

Auto (AKM) with WPA2 (with optional CCKM)

Auto (AKM) with WPA Pre-Shared Key

Auto (AKM) with WPA2 Pre-Shared Key

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Requires server and client certificates.

Requires server side certificate.

Uses TKIP Requires Username and Password

Uses AES Requires Username and Password

Uses TKIP Requires Passphrase

Uses AES Requires Passphrase

Note Beginning with Cisco Wireless IP Phone 7925G firmware release 1.1, CCKM is operational with the

WPA authentication mode using AES encryption.

Configuring the Authentication Mode

To select the Authentication Mode for this profile, follow these steps:

Procedure

Step 1 Choose the network profile that you want to configure.

Step 2 Choose the authentication mode.

Note Depending on what you selected, you must configure additional options in Wireless Security or

Wireless Encryption. See Table 4-5 for more information.

Step 3 Click Save to make the change.

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Setting the Wireless Security Credentials

When your network uses EAP-FAST, LEAP, EAP-TLS, PEAP, or Auto (AKM) with WPA, WPA2, CCKM for user authentication, you must configure both the username and a password on the Access Control Server (ACS) and the phone.

Note If you use domains within your network, you must enter the username with the domain name, in this

format: domain\username.

For information about setting security credentials, see these topics:

• Configuring the Username and Password, page 4-15

• Configuring the Pre-shared Key, page 4-15

• Setting Wireless Encryption, page 4-16

• Installing Authentication Certificates for EAP-TLS Authentication, page 4-17

• Configuring PEAP, page 4-22

Configuring Network Profiles

Configuring the Username and Password

To enter or change the username or password for the network profile, you must use the same username and the same password string that is configured in the RADIUS server. The maximum length of the username or password entry is 32 characters.

To set up the username and password in Wireless Security Credentials, follow these steps:

Procedure

Step 1 Choose the network profile.

Step 2 In the Username field, enter the network username for this profile.

Step 3 In the Password field, enter the network password string for this profile.

Step 4 Click Save to make the change.

Configuring the Pre-shared Key

When using Auto (AKM) with WPA Pre-shared key or WPA2 with Pre-shared key for authentication, you must configure a Passphrase/Pre-shared key in the Wireless Security Credentials area.

Pre-shared Key Formats

The Cisco Unified Wireless IP Phone 7925G supports ASCII and hexadecimal formats. You must use one of these formats when setting up a WPA Pre-shared key:

Hexadecimal

For hexadecimal keys, you must enter 64 hex digits (0-9 and/or A-F); for example, AB123456789CD01234567890EFAB123456789CD01234567890EF3456789C

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ASCII

For ASCII keys, you must enter a character string that uses 0-9, A-Z (upper and lower case), including symbols and is from 8 to 63 characters in length; for example, GREG12356789ZXYW

To set up a Pre-shared key in the Wireless Credentials area, follow these steps:

Procedure

Step 1 Choose the network profile that uses Auto (AKM) to enable the WPA Pre-shared key or WPA2

Pre-shared key.

Step 2 In the Key Type area, choose one of these character formats:

• Hex

• ASCII

Step 3 Enter an ASCII string or Hex digits in the Passphrase/Pre-shared key field. See “Pre-shared Key

Formats” section on page 4-15.

Step 4 Click Save to make the change.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Setting Wireless Encryption

If your wireless network uses WEP encryption, and you have set the Authentication Mode as Open + WEP or Shared Key + WEP, you must enter an ASCII or hexadecimal WEP Key.

The WEP Keys for the phone must match the WEP Keys assigned to the access point. Cisco Unified Wireless IP keys.

WEP Key Formats

You must use one of these formats when setting up a WEP key:

Hexadecimal

For hexadecimal keys, you can use one of the following key sizes:

• 40-bit—You must enter a 10-digit encryption key string that uses the hex digits (0-9 and/or A-F);

or example, ABCD123456.

• 128-bit—You must enter a 26-digit encryption key string that uses the hex digits (0-9 and/or A-F);

or example, AB123456789CD01234567890EF.

ASCII

For ASCII keys, you must enter a character string that uses 0-9, A-Z (upper and lower case), and all symbols.

• 40-bit—You must enter a 5-character string; for example, GREG5.

Phone 7925G and Cisco Aironet Access Points support both 40-bit and 128-bit encryption

• 128-bit—You must enter a 13-character string; for example, GREGSSECRET13.

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Entering Wireless Encryption Keys

To set up WEP keys, follow these steps:

Procedure

Step 1 Choose the network profile that uses Open+WEP or Shared+WEP.

Step 2 In the Key Type area, choose one of these character formats:

• Hex

• ASCII

Step 3 For Encryption Key 1, click Transmit Key.

Step 4 In the Key Size area, choose one of these character string lengths:

• 40

• 128

Step 5 In the Encryption Key field, enter the appropriate key string based on the selected Key Type and Key

Size. See the

“WEP Key Formats” section on page 4-16.

Configuring Network Profiles

Step 6 Click Save to make the change.

Related Topics

• Configuring IP Network Settings, page 4-23

• Configuring the Alternate TFTP Server, page 4-24

• Configuring Advanced Network Profile Settings, page 4-25

Installing Authentication Certificates for EAP-TLS Authentication

EAP-TLS is a certificate based authentication that requires a trust relationship between two or more entities. Each entity has a certificate proving its identity and is signed by a trusted authority. These certificates are exchanged and verified during EAP-TLS authentication.

Note The EAP-TLS certificate based authentication requires that the internal clock on the Cisco Unified

Wireless IP Phone 7925G be set correctly. Use the phone web page to set the clock on the phone before using EAP-TLS authentication.

To use EAP-TLS, both the Cisco Unified Wireless IP Phone 7925G and the Cisco Secure Access Control Server (ACS) must have certificates installed and configured properly. If your wireless network uses EAP-TLS for authentication, you can use the Manufacturing Installed Certificate (MIC) or a user installed certificate for authentication on the phone.

Manufacturing Installed Certificate

Cisco has included a Manufacturing Installed Certificate (MIC) in the phone at the factory.

During EAP-TLS authentication the ACS server needs to verify the trust of the phone and the phone needs to verify the trust of the ACS server.

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To verify the MIC, the Manufacturing Root Certificate and Manufacturing Certificate Authority (CA) Certificate must be exported from a Cisco ACS server. These two certificates are part of the trusted certificate chain used to verify the MIC by the Cisco ACS server.

To verify the Cisco ACS certificate, a trusted subordinate certificate (if any) and root certificate (created from a CA) on the Cisco ACS server must be exported and installed on the phone. These certificate(s) are part of the trusted certificate chain used to verify the trust of the certificate from the ACS server.

User Installed Certificate

To use a user installed certificate, a Certificate Signing Request (CSR) must be generated on the phone, sent to the CA for approval, and the approved certificate installed on the Cisco Phone 7925G.

During EAP-TLS authentication, the ACS server needs to verify the trust of the phone and the phone needs to verify the trust of the ACS server.

To verify the authenticity of the user installed certificate, a trusted subordinate certificate (if any) and root certificate from the CA that approved the user certificate must be installed on the Cisco ACS server. These certificate(s) are part of the trusted certificate chain used to verify the trust of the user installed certificate.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Unified Wireless IP Phone 7925G and installed on the Cisco

Unified Wireless IP

To install authentication certificates for EAP-TLS, perform the tasks listed in Table 4-6:

Ta b l e 4-6 Installing the Certificate for EAP-TLS

Tas k From For more information, see...

1. Set the Cisco Unified

Communications Manager date and

Cisco Unified Wireless IP Phone 7925G web page

Setting the Date and Time, page 4-19

time on the phone.

2. If using the Manufacturing Installed

Certificate (MIC):

a. Export the CA root certificate

and manufacturing CA certificate.

b. Install certificates on the

Cisco

ACS server and edit the

• Cisco Unified Wireless IP Phone

7925G web page

• Internet Explorer

• Microsoft Certificate Services

Exporting and Installing the Certificates on the ACS, page 4-19

Exporting the CA Certificate from the ACS Using Microsoft Certificate Services, page 4-20

trust list.

c. Export the CA certificate from

the ACS server and import it to the phone.

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Configuring Network Profiles

Table 4-6 Installing the Certificate for EAP-TLS (continued)

Task From For more information, see...

3. If using a user installed certificate:

a. Generate the Certificate

Cisco Unified Wireless IP Phone 7925G web page

Requesting and Importing the User Installed Certificate, page 4-21

Signing Request (CSR).

b. Send the CSR to CA to sign.

c. Import the certificate.

d. Install certificate on the Cisco

ACS server and edit the trust list.

e. Download the CA certificate

from the ACS server and import it into the7925G.

4. Set up the user account. ACS configuration tool Configuring the ACS Server Setup,

page 4-22

User Guide for Cisco Secure ACS for Windows

Setting the Date and Time

EAP-TLS uses certificate based authentication that requires the internal clock on the Cisco Unified Wireless IP Phone 7925G to be set correctly. The date and time on the phone might change when it is registered to Cisco

Note If a new server authentication certificate is being requested and the local time is behind the Greenwich

Unified Communications Manager.

Mean Time (GMT), the authentication certificate validation might fail. It is recommended that you set the local date and time ahead of the GMT.

To set the phone to the correct local date and time, follow these steps:

Procedure

Step 1 Select Date & Time from the left navigation pane.

Step 2 If the setting in the Current Phone Date & Time field is different from the Local Date & Time field, click

Set Phone to Local Date & Time.

Step 3 Click Phone Restart, then click OK.

Exporting and Installing the Certificates on the ACS

To use the MIC, the Manufacturing Root Certificate and Manufacturing CA Certificate must be exported and installed onto the Cisco ACS server.

To export the manufacturing root certificate and manufacturing CA certificate to the ACS server, follow these steps:

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Procedure

Step 1 From the phone web page, choose Certificates. Click Export next to the Manufacturing Root Certificate.

Step 2 Save the certificate and copy it to the ACS server.

Step 3 Repeat Steps 1 and 2 for the Manufacturing CA certificate.

Step 4 From the ACS Server System Configuration page, enter the file path for each certificate and install the

certificates.

Note For more information about using the ACS configuration tool, see the ACS online help or the

User Guide for Cisco Secure ACS for Windows.

Step 5 Use the Edit the Certificate Trust List (CTL) page to add the certificates to be trusted by ACS.

Exporting Certificates from the ACS

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Depending on the type of certificate you export from the ACS, use one of the following methods:

• To export the CA certificate from the ACS server that signed the user installed certificate or ACS

certificate, see

Exporting the CA Certificate from the ACS Using Microsoft Certificate Services,

page 4-20.

• To export the CA certificate from the ACS server that uses a self-signed certificate, see Exporting

Certificates from the ACS Server Using Internet Explorer, page 4-20.

Exporting the CA Certificate from the ACS Using Microsoft Certificate Services

Use this method for exporting the CA certificate from the ACS server that signed the user installed certificate or ACS certificate.

To export the CA certificate using the Microsoft Certificate Services web page, follow these steps:

Procedure

Step 1 From the Microsoft Certificate Services web page, select Download a CA certificate, certificate chain

or CRL.

Step 2 At the next page, highlight the current CA certificate in the text box, choose DER under Encoding

Method, then click Download CA certificate.

Step 3 Save the CA certificate.

Exporting Certificates from the ACS Server Using Internet Explorer

Use this method for exporting the CA certificate from the ACS server that uses a self-signed certificate.

To export certificates from the ACS server using Internet Explorer, follow these steps:

Procedure

Step 1 From Internet Explorer, choose Tools > Internet Options, then click the Content tab.

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Step 2 Under Certificates, click Certificates..., then click the Trusted Root Certification Authorities tab.

Step 3 Highlight the root certificate and click Export.... The Certificate Export Wizard appears. Click Next.

Step 4 At the next window, select DER encoded binary X.509 (.CER), and click Next.

Step 5 Specify a name for the certificate and click Next.

Step 6 Save the CA certificate to be installed on the phone.

Requesting and Importing the User Installed Certificate

To request and install the certificate on the phone, follow these steps:

Procedure

Step 1 From the phone web page, choose the network profile using EAP-TLS, and select User Installed in the

EAP-TLS Certificate field.

Step 2 Click Certificates. On the User Certificate Installation page, the Common Name field should match the

user name in the ACS server.

Note You can edit the Common Name field if you wish. Make sure that it matches the user name in

the ACS server. See

“Configuring the ACS Server Setup” section on page 4-22.

Configuring Network Profiles

Enter the information to be displayed on the certificate, and click Submit to generate the Certificate Signing Request (CSR).

Step 3 In the next screen, select and copy the entire contents of the text box. Send this data to the CA

administrator for signing.

The CSR text is encoded and should be sent to the Certificate Authority for signing. The CSR text can be sent by e-mail or another method determined by your CA administrator. The following steps describe the basic CSR approval process on the CA web page.

Step 4 From the Microsoft Certificate Services Request a Certificate page, select Advanced certificate request

to initiate the signing request.

Step 5 At the Advanced Certificate Request page, select Submit a certificate request by using a

base-64-encoded PKCS CMC.

Step 6 Copy the certificate data from the Cisco Unified Wireless IP Phone 7925G and paste it in the Saved

Request text box, then click Submit.

Step 7 Once the CSR is approved, the certificate must be exported in a DER encoded format and sent to the

original requestor.

Step 8 Return to the phone web page and choose Certificates to import the signed certificate.

Step 9 On the Certificates page, locate the User Installed certificate line, and click Import. Browse to the

certificate on your PC to import to the phone.

Installing the Authentication Server Root Certificate

The Authentication Server Root Certificate must be installed on the Cisco Unified Wireless IP Phone 7925G.

To install the certificate, follow these steps:

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Step 1 Export the Authentication Server Root Certificate from the ACS. See Exporting Certificates from the

ACS, page 4-20.

Step 2 Go to the phone web page and choose Certificates.

Step 3 Click Import next to the Authentication Server Root certificate.

Step 4 Restart the phone.

Configuring the ACS Server Setup

To set up the user account name and install the MIC root certificate for the phone on the ACS, follow these steps:

Note For more information about using the ACS configuration tool, see the ACS online help or the User Guide

for Cisco Secure ACS for Windows.

Procedure

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

Step 1 From the ACS configuration tool User Setup page, create a phone user account name if it is not already

Step 2 On the System Configuration page, in the EAP-TLS section, enable these fields:

Step 3 On the ACS Certification Authority Setup page, add the Manufacturing Root Certificate and

Step 4 Enable both the Manufacturing Root Certificate and Manufacturing CA Certificate in the ACS

Configuring PEAP

set up. Typically, the user name includes the phone MAC address at the end (for example, CP-7925G-SEPxxxxxxxxxxxx). No password is necessary for EAP-TLS.

Note Make sure the user name matches the Common Name field in the User Certificate Installation

page. See

• Allow EAP-TLS

• Certificate CN comparison.

“Requesting and Importing the User Installed Certificate” section on page 4-21.

Manufacturing CA Certificate to the ACS server.

Certificate Trust List.

Protected Extensible Authentication Protocol (PEAP) uses server-side public key certificates to authenticate clients by creating an encrypted SSL/TLS tunnel between the client and the authentication server.

Note The authentication server validation can be enabled by importing the authentication server certificate.

Before You Begin

Before you configure PEAP authentication for the phone, make sure these Cisco Secure ACS requirements are met:

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• The ACS root certificate must be installed

• Enable the Allow EAP-MSCHAPv2 setting

• User account and password must be configured

• For password authentication, you can use the local ACS database or an external one (such as

Windows or LDAP)

Enabling PEAP Authentication

To enable PEAP authentication on the phone, follow these steps:

Procedure

Step 1 From the phone configuration web page, choose PEAP as the authentication mode. See Configuring the

Authentication Mode, page 4-14.

Step 2 Enter a user name and password.

Configuring Network Profiles

Configuring IP Network Settings

The Cisco Unified IP Phones enable DHCP, by default, to automatically assign IP addresses to devices when you connect them to the network. If you do not use DHCP in your network, then you must disable DHCP and manually enter network configuration information. For more information, see

with the Dynamic Host Configuration Protocol Server” section on page 2-15.

When DHCP is disabled in the network, you must configure the following settings in the Static Settings menu:

• IP address

• Subnet mask

• Default Router

• DNS server 1 and 2

• TFTP server 1

Use these guidelines when manually configuring the IP settings:

• Ensure the TFTP server has an IP address.

• Ensure the default router IP address is on the same subnet as the host IP address.

Enabling DHCP

To enable the use of DHCP in the Network Profile, follow these steps:

“Interacting

Procedure

Step 1 Choose the network profile that you want to configure.

Step 2 Under the IP Network Configuration area, choose this option:

Obtain IP address and DNS servers automatically

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Step 3 Click Save to make the change.

Disabling DHCP

Step 1 Choose the network profile that you want to configure.

Step 2 Under the IP Network Configuration area, choose this option:

Step 3 You must enter these required IP addresses. See Table 4-7 for descriptions of these fields.

Step 4 Click Save to make the change.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7925G Web Pages

To disable the use of DHCP in the Network Profile, follow these steps:

Procedure

Use the following IP addresses and DNS servers

Ta b l e 4-7 Static IP Addresses When DHCP is Disabled

Static Setting Description

IP Address IP address of the phone

Subnet Mask Subnet mask used by the phone

Default Router 1 Primary gateway used by the phone

DNS Server 1

DNS Server 2

TFTP Server 1

TFTP Server 2

Primary DNS server used by the phone

Optional backup DNS server used by the phone

Primary TFTP server used by the phone

Optional backup TFTP server used by the phone

Domain Name Name of the DNS in which the phone resides

Configuring the Alternate TFTP Server

If you use DHCP to direct the Cisco Unified Wireless IP Phone 7925Gs to a TFTP server, you can also assign an alternative TFTP server to some phones instead of the one assigned by DHCP.

Note If you disable DHCP, then you must use these steps to set up the TFTP server for the phone.

To assign an alternate TFTP server to a phone, follow these steps:

Procedure

Step 1 Choose the network profile that you want to configure.

Step 2 In the TFTP area, choose this option:

Use the following TFTP servers

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