Cisco 7921G - Unified Wireless IP Phone VoIP, CP-7921G-A-K9 Administration Manual

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

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Cisco Unified Wireless IP Phone 7921 G Admin istrat ion Guide f or Cisco Unif ied Com municat ions M anager 7.0 .

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CONTENTS

Preface xi

Overview xi

Audience xi

Organization xi

Related Topics

• Features Supported on the Cisco Unified Wireless IP Phone 7921G, page 1-4

• Overview of Config uring and In stal ling t he Cisc o Unified Wireless IP Ph one 7 921 G, p age 1-11

te button Toggles the mute feature on or off.

option, or turn off the ri ng. When an incoming call is ringing, allo ws you to press th is button onc e to silence

the ring for the call. During a call, allows you to control the speaker volu me for the han dset, headset ,

and speaker mo de .

Configurable button that is used with XML applica tions , such as Push to Talk or

button

Directory services. See “Setting Up Services” sec tion on pa ge 7-17.

Features Supported on the Cisco Unified Wireless IP Phone 7921G

The Cisco Unified Wireless IP Phone 7921G functions much like traditional IP phones allowing you to place and receive telephone calls while connected to the wire less 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 netwo rk devic e.

Caution This product is not a medical device and ma y use an unl icensed fr eque ncy band tha t is suscept ible to

interference from ot her devi ces or e quip me nt.

This section provides info rmat ion abou t these topi cs:

• Feature Overvie w, p age 1- 5

• Configuring Telephony Fea tures, page 1-5

• Related Topics, page 1-5

• Configuring Network Acc ess for the Phone, page 1-5

• Providing Users with Feature Inform ation, pa ge 1-6

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

Feature Overview

The Cisco Unified Wireless IP Phone 7921G provides traditional telephony functionality, such as call forwarding and tra nsferri ng, call pi ckup, red iali ng, speed di alin g, confer ence calling , and voic e messaging system access, as well as these features:

• Wireless web acce ss to yo ur phone n umb er and the c orpor ate d irect or y.

• Access to network da ta, XM L ap pl icat ions, a nd we b-b ased servi ces.

• Online customizing of phone fe atures and services fr om the User Op tions web page s.

• An online help system that displays in formatio n on the phone screen.

• BLF enhancements, DND– Reje ct, Cal ling Par ty No rma liza tion, and E .16 4 di aling w ith p lus sign

(+).

• CSV file support, dir ect ed call pi ck up, Si ng le Button Ba rge, Join A cross Lin es en hanc emen t, and

intercom with extension mobility.

Related Topics

• Configuring Network Profile s, page 4-8

Features Supported on the Cisco Unified Wireless IP Phone 7921G

• Configuring Features, Te mplates, Serv ices, an d Users, pag e 7-1

Configuring Telephony Features

You can use Cisco Unified C ommun ications Ma nager Admi nistrati on applicat ion to set up pho ne registration criteria and calli ng search space s, to confi gure corp orate di recto ries and servi ces, an d to modify phone button tem plates. See th e “Telep hony Fea ture s Ava il able for the Phone ” se ction o n

page 7-2 and Cisc

For more informatio n abo ut C isco U nifie d C omm unica tio ns Ma nage r Admini stra tion, r efer t o Ci sco

ified Communicatio ns M anag er do cu ment ation , in cl udi ng C

Un System Guide. You can also use the context-sensitive help available within the application.

You can access the complete Cisco Unified Communications Manager documentation suite at this

cation:

http://www.cisco.com/en/US/products/sw/voicesw/ps

Related Topics

• Understanding Security Fea tures fo r Cisco Unifie d IP Phones, page 1-7

• Security for Voice Communic ations in WLA Ns, page 2-14

• Interac t in g w i t h C i sco Unifie d Communications Man ager, page 2- 12

• Telephony Feature s Avail able fo r the Phon e, page 7-2

o Unified Communicat ions M anag er A dmini str ati on Gui de for addi tional informat ion.

isco Unified Communications Manager

556/tsd_products_support_series_ho me.h tml

Configuring Network Access for the Phone

Like other network devices, you must confi gure IP phone s to access Cisco Unified Com municat ions Manager and the rest of the IP net work using the wireless LAN . There are two methods for configuring network settings such as DHCP, TFTP, and for wireless settings for the phone.

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Features Supported on the Cisco Unified Wireless IP Phone 7921G

• Cisco Unified Wireless IP Phone 7921G web pa ges

• Network Profiles menu on the Cisco Unified Wireless IP Phone 7921G

You can access t he c on figur ation w eb p ages by usin g a b row ser fr om yo ur PC. For more in for matio n,

e Using the Cisco Uni fie d Wi rel ess I P Pho ne 7921G Web Pa ges, page 4-1.

se You can also configure ne twork setti ngs on the phone itsel f. For more informat ion abou t confi guring

atures from the phone, see Chapter 5, “Configuring Settings on the Cisco Unified Wireless IP Phone.”

fe Because the Ci sco Unified Wireless IP Phone i s a ne twork de vice , yo u c an obta in d etaile d status

nformation about it. Thi s informa tion can a ssist you in trou bleshoo ting prob lems tha t users mig ht

i encounter when using their IP phones. See Chapter 9, “Monitoring the Cisco Unified Wireless IP Phone

Remotely,” for tips on using this information.

Related Topics

• Using the Cisco Unif ied Wir ele ss IP Pho ne 7921G We b Page s, pa ge 4-1

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

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

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

Providing Users with Feature Information

If you are a system administrator, you are the primary source of information for Cisco Unified Wireless IP Phone users in your network or company. To ensure that you distribute the most current feature and procedural information, familiarize yourself with Cisco Unified Wireless IP Phon e 7921G

ocumentation. Make sure to visit the Cisco Unified IP Phone web site:

http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_prod ucts_sup port_maintain _and_ope rate. html

From this site, you can view additiona l phone doc umentat ion. In addition to providing documentation, it is important to inform users about available Cisco Unified IP

e features—including features specific to your company or network—and about how to access and

Phon customize those fe ature s, if app ropriat e.

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

Information to Users By Using a Website.”

Note The radio frequency (RF) for the Cisco Unified Wireless IP Phone 79 21G is co nfigured fo r a specific

regulatory domain. If users attempt to use this phone outside of the regulatory domain, the phone will not function properly and t hey might vi olate loca l regulat ions.

Related Topics

• Understanding Securit y Profi les, p age 1-10

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

You can prevent ac cess to a p hone’ s w eb pag e, w hich di splays a variety of operational statistics for the phone.

Cisco Unified Communicati ons Manager A dministr ation:

• Disabling Gratuitous ARP (GARP)

• Disabling access to the Setting menus

• Disabling access to web pages f or a p hone Note You can view current set tings fo r the GAR P Enabl ed, an d

Web Access option s by lo oki ng at the phone ’s Dev ice Information menu. For more information, see the “Viewing

Security Informa tion” se ctio n o n pag e 8- 1.

• Identifying Encrypt ed an d Authen ticated Phon e Calls, page 1-11

• Viewing Device Information, page 8-4

• Security Restrictions, page 1-11

Understanding Security Profiles

A security profil e defines wheth er a phone is n on-secure, auth enticated, or encrypted and associated with every Cisco Unified IP Phon e that is su pported by Cisco Unified Communic atio ns M ana ger

ministration. For information about configuring the security profile and applying the profile to the

Ad phone, refer to Cisco Unified Comm unication s Manager Secu rity Guide.

Note Security is configured on each Cisco Unified IP 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_maintenanc e_guides_list.html .

To view the security mode that is set for th e phone, from th e phone scre en, choose SETTI Information > Security > Security Mode. For more information, see the “Viewing Security

Information” section on page 8-1.

Related Topics

• Identifying Encrypt ed an d Authen ticated Phon e Calls, page 1-11

NGS > Device

• Viewing Device Information, page 8-4

• Security Restrictions, page 1-11

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7921G

Identifying Encrypted and Authenticated Phone Calls

When security is impleme nted for a phone, you ca n ident ify auth entica ted or enc rypted ph one calls by icons on th e sc re en on the p hon e.

In an authenticated call, all de vices participat ing in the establishme nt of the call are auth enticated by the

o Unified Communications Manager. When a call in progress is auth enticated, the call progress ico n

Cisc

the right of the call duration timer in the phone screen changes to this icon:

to In an encrypted call, all devices participating in the establishment of the call are authenticated by the

o Unified Communications Manager. In addition, call signaling and media streams are encrypted.

Cisc

n encrypted call offers th e high est l evel of secur it y, provi ding inte gr ity and pr ivac y to th e cal l. Whe n

A a call 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:

Note If the call is routed through non-IP call legs, such as the PSTN, the call might be non-secure even though

it is encrypted within the IP network and has a lock icon associated with it.

Related Topics

• Understanding Security Fea tures fo r Cisco Unifie d IP Phones, page 1-7

• Understanding Securit y Profi les, p age 1-10

• Security Restrictions, page 1-11

Security Restrictions

When using a phone that is no t conf igur ed for enc ryp tion , the user ca nn ot bar ge into an en cr ypte d call . When barge fai ls in th is c ase, a r eo rder tone ( fast busy to ne) play s o n t he ba rge i n itiat or’ s p hone.

If the phone is configured for encryption, the user can barge into an authenticated or non-secure call from

he encrypted phone. After the barge occurs, Cisco Unified Communications Manager classifies the call

non-secure.

as If the phone is configur ed for en crypt ion, th e user can ba rge in to an encr ypted call, an d the pho ne

dicates that the call is encrypted.

in A user can barge into an authenticated call, even if the phone that is used to barge is non-secure. The

uthentication icon continues to display on the authenticated phones in the call, even if the initiator’s

a phone does not suppor t secu rit y.

Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7921G

When deploying a new IP telephony system, system administr ators and netw ork admini strators must complete several initial configuration tasks to prepare the network for IP telephony se rv ice. For

nformation and a checklist for setting up and configuring a complete Cisco IP telephony network, refer

i to the “System Configuration Overview” chapter in the Cisco Unified Communications Manager System Guide.

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7921G

To add wireless IP phones t o the IP netwo rk, system admini strators al so must perf orm a site surv ey to determine where to place and install access points (APs) for wireless voice coverage. For detailed information about a vo ice ov er W LAN d eplo yment , r ef er t o the Cisco Enterprise Mobility 3.0 Design

Guide.

After you have set u p the IP t elep hon y sy stem and conf i gured syste m- wide fe atu res i n Ci sco U nif ied

munications Manager, you c an add IP phones to the syste m.

Com The following t op ics pro vide a n ove rv iew of pro cedu re s f or ad ding Cisc o Unif ied IP Phon es t o your

twork:

• Configuring the Cisco Unifi ed W ireless I P Ph one 7 921 G i n Ci sco U nifie d Com mun ications

Manager, page 1-12

• Installing the Cisco U n ified Wi rele ss I P Pho ne 7 921G, page 1-12

Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified Communications Manager

To add phones to the Ci sco U nifie d C ommuni ca tions M a nage r da taba se, you can us e:

• Auto-registration

• Cisco Unified Communications M anager Admi nistratio n

• Bulk Administration Tool (BAT)

• BAT and the Tool for Auto-Reg ister ed Phones Suppor t (TAPS)

For more information about these choices, see the “

Unified Communications M ana ger” se ctio n o n pag e 3-2.

For general information about configuring phones in Cisco Unified Communications Manager, refer to

e “Cisco Unified IP Phone” chapter in the Cisco Unified Communications Manager System Guide.

th For a checklist of tasks for configurin g the phone i n Cisco Unifie d Communi cations Mana ger, see the

“Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified Communications Manager” section on page D-4.

Related Topics

• Installing the Cisco U n ified Wi rele ss I P Pho ne 7 921G, page 1-12

• Configuring Features, Te mplates, Serv ices, an d Users, pag e 7-1

• Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified Communications

Manager, page D-4

Methods for Adding Pho nes to Cisco

Installing the Cisco Unified Wireless IP Phone 7921G

After you have added the phones to the Ci sco Unified Com munica tions Manage r datab ase, you can complete the phone instal lation. Y ou (or the pho ne users) can in stall the phon e at the user s’s locati on. The Cisco Unified Wireless IP Phone Installation Guide that ships in the box with e ac h phone provides directions for a ssembl ing t he p hon e an d ac cessor ies a nd char gi ng t he ba tt ery.

Prior to using the phone to connect to the wireless LAN, you need to configure a network profile for the

ne. You can use the Cisco Unified Wireless IP Phone 7921G web pages to set up the network profile

pho

d other phone se tting s, or you c a n con figu re t he n etw ork p ro fil e usi ng ph one m enus.

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Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

If you use auto- regi stra tio n wi th Cisco U nif ied Com muni cati ons Mana ger, y ou ne ed to up date th e specific configuration information for the phone such as associating the phone with a user, changing the softkey template, or dire ctor y num ber.

Note Before you insta ll a p hon e, e ve n if it is ne w, u pgr ade t he p hone to th e c ur rent fi rmwa re im age. Fo r

information about upg rading , refer to the Readm e file for you r phone w hich is loca ted 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 792 1G ” secti on on page D-7.

Related Topics

• Understanding the Cisco Unif ied Wireless IP Phone 7921G , page 1-1

• Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified Communications

Manager, page 1-12

• Installing the Cisco Unified Wireless IP Phone 7921G, page D-7

• Troubleshooting the Cisco Unified Wireless IP Phone 7921G , page 10-1

Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7921G

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Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7921G

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G

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Overview of the VoIP Wireless Network

This chapter provides an overview of the interaction between the Cisco Unified Wireless IP Phone 7921G and other key components of a VoIP network in a WLAN environment. It contains the

ollowing sections:

• Understanding the Wireless LA N, page 2-1

• Understanding W LAN St anda rd s and Techn ologie s, page 2-3

• Components of the VoIP Wirel ess Network, pa ge 2-7

• Security for Voice Communic ations in WLA Ns, page 2-14

• VoIP WLAN Configuration, pa ge 2- 18

• Site Survey Verification, page 2-20

Understanding the Wireless LAN

CHA PTER

With the introduction of wireless communication, wireless IP phones can provide voice communication within the corporate wirele ss local area netwo rk (WLAN). The Cisco Unified Wireless IP Phone 7921G

pends upon and interacts with wireless APs (APs) and key Cisco IP telephony components, including

Unified Communications M anager , to provid e wireless voi ce comm unicatio n.

Cisco In a traditional LAN, IP phones and computers use cables to transmit messages and data packets. Cisco

ified WLAN delivers security, scalability, reliability, ease of deployment, and management similar

Un to wired LANs. It includes RF capabilities that en able real-time ac cess to core busin ess applications an d 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 sh

IP telephony.

ows a typical WLAN topology that enables th e w ireless tr an smission o f voic e f or wi rel ess

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Understanding the Wireless LAN

113946

Figure 2-1 WLAN with Wireless IP Phones

When a wireles s IP pho ne p owers on, it search es fo r a nd beco mes as soci ated with an AP. As user s mov e from one location to anot her, the wireless IP pho ne roams out -of-ra nge of o ne 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 Associating to an AP, page 2- 10 fo r more in format ion.

Chapter 2 Overview of the VoIP Wireless Network

The AP uses its connection to the wired network to transmit data and voice packets to and from the

tches and routers. Voice signaling is transmitted to the Cisco Unified Communications Manager

swi server for call processing and ro uting.

APs are critical components in a WLAN because they provide the wireless links or “hot spots” to the

twork. Cisco requires that the APs supporting voice communications use Cisco IOS Release 12.3(8)JA

ne or later. Cisco IO S softw are provi d es fe atu res for ma nagi ng voi ce tr af fic .

In some WLANs, each AP h as a wired connection to a n Eth er n et switch, such as a Cisco Catalyst 3750,

hat is configured o n a L A N. The swit ch pro vide s a ccess t o gatew ays an d the Cisc o

t Unified Communications Ma nager serve r to support wire less IP telepho ny.

Some netwo rks ha ve wire d compo nen ts tha t supp ort wir ele ss comp onent s. The wired comp onents coul d

onsist of switches, routers, and bridges with special modules to enable wireless capability.

c The Cisco Unified WLAN can have the followi ng compone nts:

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

antennas or a nte nna c on nect ion s f or easy de ploy me nt.

• Cisco 2000 Series Wireless LA N Controller—For small to m edium sized networks, such a s 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 maxim um of 50 and 100 acce ss points respe ctively.

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

businesses and ent erpr ises t o de ploy an d mana ge secu re W LAN s at b ranc h o ffic es .

• Cisco Catalyst 6500 Series Wireless Serv ices Modul e (WiSM)—Pr ovides secur ity, mo bility,

redundancy, and ease of use for WLAN admini strators.

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Chapter 2 Overview of the VoIP Wireless Network

Understanding WLAN Standards and Technologies

• Cisco Catalyst 3750 Series Integra ted Wireless LAN Con trollers— Adds wireless LA N controll er

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)—Prov ides a powerful syst ems manage ment. Syste m

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 manage ment, an d locati on based sec urity. An ope n API is inc luded.

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

Aironet Wireless LA N C lie nt Ad ap ters conn ec t de skto p and m obile comp ut ing devi ces to the WLAN in 802.11b-compli ant or 802.11a -compl iant netwo rk.

For more information about Cisco Unified Wireless Networks, refer to

http://wwwin.cisco.com/marketing/mobility/solutions/unified/index.shtml. For more in formation about

the Cisco wireless products, re fer to http://www.cisco.com/en/US/products/hw/wireless/index.html.

Understanding WLAN Standards and Technologies

This section desc ribe s th e follow ing c once pts:

• 802.11 Standards f or WL AN Com muni cations , p age 2-3

• Radio Frequency Ranges, page 2-3

• Wireless Modulation Tec hnologi es, page 2- 4

• AP, Channel, and Domain Relationships, page 2-4

• WLANs and Roaming, page 2-6

802.11 Standards for WLAN Communications

Wireless LANs must follo w the Insti tute of Ele ctrica l and Elec tronics Engineers (IEEE) 802.11 standards that defi ne the pr otoc ols tha t g overn a ll E ther net -base d wi rel ess t raff ic. The Cisc o Unified

reless IP Phone 79 21G suppo rts the follo wing standa rds:

• 802.11b–Specifies the radio frequen cy (RF) of 2.4 GHz for both transmitting and receiving data.

Commonly called the Wi-Fi standard.

• 802.11g–Uses the same unlice nsed 2 .4 GH z ba nd as 802.1 1b, but e xtends t he da ta r ates to pr ovide

greater performance by usi ng Orthogo nal Freque ncy Divi sion Multiple xing (OFDM ) techno logy. 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.

Radio Frequency Ranges

WLAN communications use the following RF ranges:

• 2.4 GHz—Does not requir e licensi ng. To redu ce inte rfere nce withi n this ban dwidt h, WLANs

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

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Many devices oper ate i n t he 2 .4 GH z ba ndwi dth inc luding cord less pho nes a nd mic rowa ve ovens and can interfere with wireless communications. Interference does not destroy the signal, but can reduce the tran smissi on spee d from 11 Mb ps to 1 M bps . RF i nte rf eren ce ca n aff e ct voic e qual ity over the wireless network.

• 5 GHz—Divided into several sections call ed Unlicensed National Informatio n Infrastructure (UNII)

bands and has four cha nnel s e ach. Th e ch an nels ar e space d at 2 0 M Hz to provi de n o n- overl appi ng channels and mo re ch anne ls t h an 80 2.1 1b or 80 2.11g.

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 identif ies its data packets and al l others ar e ignore d. Cisco wire less 802. 11b/g products use DSSS technology to suppor t m ultiple devices on the WL AN.

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

a physical–layer encod ing techno logy that breaks one hi gh-speed data carrie r into severa l lower-speed carriers to transmit in par allel across the RF sp ectrum. OFDM, when used with 802.11g and 802.11a, c an s u ppo rt data r ate s as hi gh as 54 M bps.

Table 2-1 pro

IEEE standard.

vides a comparison of da ta rates, nu mber of channe ls, and mod ula tion tech nologi es by

Chapter 2 Overview of the VoIP Wireless Network

Table 2-1 Comparison of 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

3 (Japan us es 4) 3 (Japan u s es 4) Up to 23

Channels Wireless

DSSS DSSS, ODFM ODFM

Modulation

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 ch an nel s fo r ea c h AP . T he r ecom mende d ch anne ls fo r 802 .11 b and 8 02.11g i n N orth America are 1, 6, an d 1 1.

Regulatory domains determine the number of chann els that wireless co mmunicati ons can us e within the

requency band. Table 2-2 lists regulatory domain, frequency ba nd range, and operati ng channe ls for

f four regulatory domains. The Cisco Unified Wireless IP Phone 7921G uses the fourth domain (product

ber is CP-7921G-W) for al l o the r reg ions in the wo rld. Wir ele ss LA Ns i n th e rest of t he w o rld u se

num

802.11d to ident ify b and r an ges and c han nel s.

Mbps

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

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

each AP. If your wirele ss network us es a contro ller, use the Auto-RF fe ature w ith mini mal voice disruption.

Table 2-2 Regulatory Domain Frequency Band and Channel Usage

Regulatory Domain Frequency Band Range Operating Channels

FCC 2.412-2.462 GHz 11 ch anne ls Product number: C P-79 21G- A 5.15-5.25 GHz (U NII -1 )

ETSI (Europe) 2.412-2.472 GHz 13 ch anne ls (1-13 ) Product number: CP-79 21G- E 5.15-5.725 GHz 19 channels Japan 2.412-2.472 GHz 13 channels (ODFM) Product number: CP-79 21G- P 2.412- 2.484 G Hz 14 ch anne ls (CCK)

World Product number: CP-7921G- W

Understanding WLAN Standards and Technologies

12 channels

5.25-5.35 GHz (UNII-2)

5.725-5.825 (UNII-3)

5.470 - 5.725 (DFS)

5.47-5.725 GHz (pendi ng

11 channels

approval

5.15-5.35 GHz 8 channels Uses 802.11d to iden tify ba nd

ranges

Uses 802.11d to identify channels

The AP coverage a rea d ep ends o n its type o f ant enn a an d tr an smissi on powe r . The AP co ve rage r ange 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 appr oximately 20 percent to allow uninterrupted co nnec tio ns a s phone use rs ro am f rom o ne AP to a nothe r.

Wireless networks use a service se t identifier (SSID). The SSI D different iates one WLAN f rom anothe r,

o all APs and all devices attemptin g to connec t to a specific WLAN must use the sam e SSID. The SSID

s groups user devices and associat es the group wit h the A Ps.

For more information about wireless network components and design, refer to the following documents:

• Cisco Enterprise Distributed Wireless Solution Ref erence Net work Design at

http://www.cisco.com/application/pdf/en/us/guest/netsol/ns178/c649/ ccmigration_0918 6a0080 0d6 7eb.p df

• Overview: Cisco Unified Wireless Network at http://www.cisco.com/en/US/solutions/ns175/

networking_solutions_p rod ucts_ge neric cont ent0900 aec d80 529a5f .htm l.

For more information about APs, see the “

VoIP WLAN Configuration” section on page 2-18.

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WLANs and Roaming

Wireless IP phones provide communication mobility to users within the WLAN environment. Unlike cellular phones tha t have broad co verage , the cove rage are a for the unified IP phone is smaller;

herefore, phone users fr equent ly roam fro m one AP to anot her. To understa nd some of the limitation s

t of roaming with wir eless I P ph ones, th ese e xample s pr ovide info rmati on abo ut th e WLAN en viro nment.

• Pre-call Roaming—A wireless IP phone user po wers on the phon e in the off ice, an d the pho ne

associates with the near by AP. The u ser le av es t he bui ldi ng, m ove s to a noth er bu i ldin g, a nd the n 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 netwo rk 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 recon nect to the n etw ork. By pr ess ing a key o n th e pho ne , th e user ac tiva tes t he phone and increases the scan ning rat e to speed up reconnec ting to th e network.

Chapter 2 Overview of the VoIP Wireless Network

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

building to anothe r. The r oami ng eve nt occ ur s whe n the ph one m ov es int o th e range of a di ffer e nt 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 unified IP phone keeps the same IP ad dress

nd the call continues. As a unified I P phone roams between APs, it must re-authenticate with each

ew AP. See the “Authentication Methods” section on page 2-14 for informat ion about

n authentication.

If the unified IP phone user moves from an AP that cove rs IP Subnet A to an AP that covers IP

et B, the phone no longer has an IP address or gateway that is valid within the new subnet and

Subn the call can disconnect.

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

Module (WiSM), the Cisc o Unified Wireless IP Phone 792 1G now sup por ts L ayer 3 ro ami ng for

tonomous mode APs. For d eta ils abou t t he Ci sco WL SM, r efer to the pr oduct doc um en tation

au available at:

http://www.cisco.com/en/US/products/ps6526/tsd_produ cts_suppo rt_mode l_home.h tml

Layer 3 roaming with light weigh t mode APs is acc ompli shed by cont rollers th at use dynami c

terface tunneling. Clients that ro am across controllers and VLANS can keep their IP address when

in using the same SSID.

• Fast and Secure Roaming— Cisco Centr alized Key Manage ment (CCKM ) enable s authen ticate d

client devices to roam securel y from one AP to another without a ny percep tible de lay during reassociation. W ith t he su ppo rt of CCK M pr ot ocol , t he w ire less IP phone i s able to nego tia te t he

ndoff from one AP to ano t her mo re easi ly. D uri ng the roami n g pro cess, the ph one must scan for

ha the nearby APs, d etermin e which AP can pro vide the b est ser vice, an d then r eassoci ate with th e new AP. When implementing st ronge r authen ticatio n methods, such as WP A and EAP, t he number of information exchanges increases and causes more delay during roaming. To avoid additional delays, use CCKM to manage authentication.

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CCKM, a centralized key manageme nt pro tocol, pro vides a cache of sessi on creden tials on the wireless domain server (W DS). As the phon e roam s from one AP to the next, CCKM compress es 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/ps4 c5223.html

Note In dual band WLA Ns, it is possi b le to r oam bet we en 2. 4 GHz b an ds (802.1 1b/ g) a nd 5 GH z ba nds

(802.11a). The p hon e mov es ou t of ra ng e of on e AP usin g o ne ba nd an d i nto t he ra ng e of a nothe r tha t 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 com munic ations.

Related Topics

• Voice QoS in a Wireless Network, page 2-10

• Interacting with Cisco Unif ied Wire les s A Ps, page 2-9

Components of the VoIP Wireless Network

570/prod_technical_reference 09186a 00801

• VoIP WLAN Configuration, pa ge 2- 18

Components of the VoIP Wireless Network

The wireless IP phone must interact with several network components in the WLAN to successfully place and receive cal ls. The fol lowing topics de scrib e network compone nts:

• Networking Protocols Used with Cisco Unified Wireless IP Phones, page 2-7

• Interacting with Cisco Unif ied Wire les s A Ps, page 2-9

• Voice QoS in a Wireless Network, page 2-10

• Interac t in g w i t h C i sco Unifie d Communications Man ager, page 2- 12

• Interact ing with th e D HCP Serv er, p age 2- 13

Networking Protocols Used with Cisco Unified Wireless IP Phones

Cisco Unified IP Phones suppor t several net working pro tocols for voice comm unicati on. Ta ble 2-3 describes the networ king pr otoc ols th at th e Ci sco Unified Wireless IP Phone 7921G supports.

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Table 2-3 Supported Networking Protocols

Networking Protocol Purpose Usage Notes

Cisco Discovery Protocol (CDP)

Dynamic Host Configuration Protoco l (DHCP)

IP Messaging protocol that add resses

Chapter 2 Overview of the VoIP Wireless Network

Device-discove ry protocol that run s on all Cisco-manufa ctured equipment.

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

Dynamically allocates and assigns an IP address to netw ork de vices.

DHCP enab les an I P ph one t o connect to the networ k and becom e operational without the administr ator assigning an IP address or configuring additiona l 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 def aul t. If disabled, you mu st m anu ally configure the IP address, subnet mask, gateway, and an T FTP serve r on each phone locally .

Use DHCP custom option 150. With this method, you configure the TFTP server IP addr ess as the opti on valu e. For additional supported DHCP configurations, refe r to Cisco

Unified Communications Manager System Guide.

To communicate using IP, network devices must have a n assi gn ed I P address, subnet, and gat ewa y.

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, ove r data netw orks.

RTP Standard for transporting real-time

data, such as interactive voice and video, over data network s.

SCCP Uses Cisco-proprietary messa ges to

communicate between IP d evices and Cisco Unified Communications Manager.

IP addresses, subnet, and ga tewa y identifi catio ns ar e aut omat ica lly assigned if you are using the Cisco Unified IP Phone with DHCP. If you are not using DHCP, you must manually assign these pr operti es t o each phone lo ca ll y.

Cisco Unified IP Phones use the RTCP protocol to al low mo nitori n g of the data delivery and mi nimal control and iden tific atio n functionality.

Cisco Unifi ed IP Ph ones use th e RTP protocol to send and receive real-time voice tra ffic fro m other phones and gatewa ys.

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

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Table 2-3 Supported Networking Protocols (continued)

Networking Protocol Purpose Usage Notes

TCP Connection-ori ent ed t ran spor t

TFTP Method for transferring files over the

TLS TLS is a standard protocol for

User Datagram Protocol (UDP)

rotocol.

network. On the Cisco Unified IP Phone,

TFTP enables yo u to ob tain a configuration file specific to the phone type.

securing and authenticating communications.

Connectionless messag ing p roto co l for delivery of dat a pa cke ts.

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 runn ing i n your network, you must manually assign a TFTP server to ea ch p hon e.

When security is implemen ted, Cisco Unified IP Phones use the TLS protocol when securely regist ering with Cisco Unified Communications Manager.

Cisco Unifi ed IP P h on es re ceive and process UDP messages. RTP voice traffic runs over UDP.

Related Topics

• Understanding the Phone Star tup Proces s, page 3-18

• Components of the VoIP Wirel ess Network, pa ge 2-7

• Configuring DHCP Settings, pa ge 5-6

Interacting with Cisco Unified Wireless APs

Wireless IP phones u se the same APs as wire less dat a de vice s. H owe ver, vo ice tra ff ic over a WLA N requires different equi pm ent confi gura tion s an d lay outs tha n a W LAN t hat is use d e xclusi vel y for data traffic. Data transmi ssion can tolerate a hi gher le vel of RF noise, pa cket lo ss, and chan nel cont ention than voice transmission . Packet loss du ring voic e transmi ssion can caus e chopp y or broke n audio and make the phone call in au dibl e.

Wireless IP Phones users a re m obil e a nd ofte n ro am a cross a cam pus or be tw een floo rs i n a b uil ding

hile connected to a call . In contra st, data use rs remain in one place or occasi onally move to anoth er

w 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

rvey will determine settings suitable to wireless voice and assist in the design and layout of the

su 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.

n you add a grou p o f new users, insta ll more equ ip ment, or st ack la rge a mount s of i nvento ry, you

Whe are changing the wireless environment. A post in stallation survey will verify th at the AP coverage is still adequate for optimal voic e communicati ons. See the “Site Survey Verification” section on page 2-20 for more information.

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Associating to an AP

At startup, the Cisco Unified Wireless IP Phone 7921G scans for APs with Service Set Identifiers (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 phon e attemp ts to asso ciate w ith the AP w ith the highes t RSSI value.

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

the AP to the unified IP phone. The phone us es the QBSS va lue to de term ine whe the r the A P c an e

Note Q BSS is not supp orte d wh en usin g W i-Fi 8 02. 11a.

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

value of each vo ice str eam allows the syste m to allo cate ba ndwidth to voice device s on a fi rst-come, first-served basis. For mor e inform ation , see “Voice QoS in a Wireless Network” section on

page 2-10.

Chapter 2 Overview of the VoIP Wireless Network

ffectively handle more traffic.

The unified IP phone associates with the AP with the highest RSSI and lowest channel usage values

BSS) that have matching SSID and encryption types. To ensure that voice traffic is handled properly,

(Q you must configure the correct QoS in the AP. For configuration information, see “Wireless Netwo rk

Requirements for VoIP” section on page 2-19.

Related Topics

• Security for Voice Communic ations in WLA Ns, page 2-14

• VoIP WLAN Configuration, pa ge 2- 18

Voice QoS in a Wireless Network

Voice traffic on the Wireless LAN, like data traf fic, is susceptible to delay, jitter, and pack et 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 sepa rate VLA N for data tr affic , not the defa ult nati ve VLAN w hich is typically used for a ll netw ork devi ces .

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

e WLAN.

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

• 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 VLA Ns. If you con figure a separa te manage ment

AN in the WLAN, do not associate an SSID with the management VLAN.

VL By separating the phones onto a voice VL AN and mark ing voic e packet s with high er CoS, you can

nsure that voice traffic gets priority treatmen t over data traffic resulting in lower packet delay and fewer

e lost packets.

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Chapter 2 Overview of the VoIP Wireless Network

119160

Downstream

Upstream

Downstream

Upstream

Network

Downstream QoS only

Bi-Directional QoS

Unlike wired networks with dedi cated ban dwidths, wireless LANs have to conside r traffic direction when implementing QoS. Traffic is classified as upstream or downstream from the point of view of the AP as shown in Figu re 2-2.

Figure 2-2 Voice Traffic in a Wireless Network

Beginning with Cisco IOS release 12.2(11)JA, Cisco Aironet APs support the contention-based channel access mechanism calle d Enhanced Dis tributed C oordination Fun ction (EDC F). The EDCF-typ e 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 ca n ha ve up t o eig ht q ue ues on the AP, y ou shou ld u se only t wo q ue ues for voi ce tra ffi c

ensure the best possible voice QoS. Place voice (RTP) and signaling (SCCP) traffic in the highest

to priority queue, an d p lac e da ta tra ffic in a best -ef fort qu eu e.A lth ough 802. 11b /g E D CF doe s no t guarantee that vo ice tr af fic is prot ecte d from da ta t raffi c, you sh oul d ge t t he b est stati sti cal r esul ts by using this queuing m ode l.

Note Th e Cisc o Unified Wireless IP Phone 7921G 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 Pho ne 7921G supports the IEEE 8 02.11e industry s tandard a nd is Wi-Fi M ultimedia

M) capable. WMM enables diff erent iated ser vices for voi ce, video, best effort data and other

(WM 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 w ith reserv ed band width , when the am ount of voic e traffi c 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)

eme is required. With CAC, QoS is maintained in a network overload scenario by ensuring that the

sch number of active voice ca lls does not excee d the confi gured limits on the AP. The Cisco Unified

reless IP Phone 79 21G can int egrate layer 2 TSpe c admis sion cont rol with layer 3 Cisco Unified

munications Manager admissi on control (RSVP). Durin g times of network conges tion, cal ling or

Com called parties receive a fast busy indication. The system maintains a small bandwidth reserve so wireless phone clients can roam into a neighb oring A P (AP), even wh en the AP is at “full capa city”. 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 Unified Wireless IP Phone 7921G set s do not nee d to be

odified. To configure QoS correctly on the AP, see the Interacting with Cisco Unified Wireless APs,

page 2-9.

Related Topics

• Authentication Method s, page 2-14

• Interacting with Cisco Unified Communications Manager, page 2-12

• VoIP WLAN Configuration, pa ge 2- 18

Interacting with Cisco Unified Communications Manager

Cisco Unified Communications Ma na ger i s the cal l contr ol co mpo ne nt in the ne tw ork that ha nd les a nd routes calls for the wireless IP phone s. Cisco Unified Communications Manager manages the

mponents of the IP telephony syste m—the phon es, access ga teways, an d the resou rces—for suc h

co features as call conf eren cing and ro ute planni ng. Whe n deployin g Cisco Unified Wireless IP Phone 7921G, you must use Cisco Uni fi ed Communications Manager Release 4.1, 4.2, 4.3, 5.0, 5.1,

0(1), 6.1(1) or 7.0(1) and SCCP protoc ol.

6. Before Cisco Unified Communic ations Manager can recog nize a pho ne, it must re gister with Cisco

ified Communicatio ns Mana ger a nd be conf igure d in the da tabase . For in for mat ion ab out se tting up

nes in Cisco Unified Communications Manager, see the “Configuring the Cisco Unified Wireless IP

pho

Phone 7921G in Cisc o Unifi ed Co mm unic ation s M anag er” se ction on p age 1-12.

You can find more information about configuring Cisco Unified Communications Manager to work with

he IP phones and IP devices in the Cisco Unified Communications Manager Administration Guide an

Cisco Unified Communications Mana ger S yste m Gui de.

Related Topics

• Configuring the Cisco Unifi ed W ireless I P Ph one 7 921 G i n Ci sco U nifie d Com mun ications

Manager, page 1-12

• Phone Configuration Files and Profile Files, page 2-12

Phone Configuration Files and Profile Files

Configuration files for a phone define parameters for connecting to Cisco Unified Communications Manager and ar e st ored on t he T FTP se rver. In gen er al, a ny ti me y ou ma ke a cha ng e in C is co Unified Communications Ma nager Ad ministrat ion that re quires rese tting the pho ne, the pho ne

onfiguration file changes automatically.

c Configuration files also contain information about the correct image load for the phone. If this image

oad differs from the one currently loaded on a phone, the phone contacts the TFTP server to request the

l new image file.

The phone first requests the configuration file SEPxxx lowercase hexadecimal r ep resen tatio n o f ea ch i nte ger in the MAC address. If the phon e c ann ot f ind thi s file, it requests the configuration file XMLDefault.cnf.xml.

After the phone obtains the *.cnf.xml files , it requests a phon e-spec ific pro file file . If a phone cannot

ind this profile file, it requests the appropriate common profile file.

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xxxxxxxxx.cnf. xml, wh ere ea ch xx is the two -digit

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

Related Topics

• Networking Protocols Used with Cisco Unified Wireless IP Phones, page 2-7

• Authentication Method s, page 2-14

• Encryption Methods, page 2-16

• Interacting with Cisco Unified Communications Manager, page 2-12

• Components of the VoIP Wireless N etwork, pa ge 2-7

• VoIP WLAN Configuration, pa ge 2- 18

VoIP WLAN Configuration

This section provid es co nfig urat ion guide line s f or de ploy ing wir ele ss IP phone s in the W LAN and includes these topics:

• Wireless Network Requireme nts for Vo IP, page 2-19

• Interacting with Cisco Unified Wireless APs, page 2-9

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Wireless Network Requirements for VoIP

When configuring voice over the wireless LAN, use APs that run Cisco IOS Version 12.3(8)JA or later. Controllers should be r unni ng version 4. 0 and h i gher with IOS Ver sio n 12. 3(8 )JX o r late r.

The Cisco Unified Wireless IP Phone 7921G supports Cisco Aironet APs (APs) that can run Cisco IOS

n autonomous mode and APs that run in lightweight mode with lightweight AP protocol (LWAPP) and

i use a Cisco Unified wireless LAN controller. Table 2-7 lists the supported AP models and op erati on mode in the WLAN.

Note Voice over the wireless LAN (V oWLAN) does not curren tly suppor t MESH techno logy such as Cisco

Aironet 1500 Serie s Li ghtweig ht Outdo or M esh A Ps.

Table 2-7 Supported APs and Modes

AP Models Autonomous Mode Lightweight Mode

Cisco Aironet 350 Se rie s AP Yes No Cisco Aironet 500 Series AP Yes Yes Cisco Aironet 110 0 Seri es A P Yes Yes Cisco Aironet 113 0 Seri es A P Yes Yes Cisco Aironet 120 0 Seri es A P Yes Yes Cisco Aironet 124 0 Seri es A P Yes Yes Cisco Aironet 125 0 Seri es A P Yes Yes Cisco Aironet 1300 Se rie s AP Yes Yes Cisco 1000 Series Ligh tweight A P No Yes

VoIP WLAN Configuration

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

Cisco Unified Wireless IP Phone 7921G, but might not support key features such as Dynamic Transmit Power Control (DTP C), A RP- cac hing , LE AP/E AP -FAST, Q BSS, U -APSD , 80 2.1 1d an d 802. 11 h.

Configuring APs 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 inf orm ati on abou t c onf igur ing your AP, r ef er to t he a ppr opri ate Cisc o Aironet AP

Installation and Configuration Guide f

Note When deploying the Cisc o Uni fied Wi rele ss IP Pho ne 79 21G with the Wo rld Regul atory D omain

(CP-7921GW-K9), you must enable the APs for world mode (802.11d). The world model phone gets the channels and power info rmati on from the AP.

To see a list of configuration tasks for th e Cisco Aironet AP, controller, an d Ethernet switch when setting up VoIP on the WLAN, see the “C onf igur in g th e Wi rel ess N etwor k” sec tio n on p ag e D-1.

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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:

Procedure

Step 1 Use SSH or Telnet to access the Cisco Unified wireless LAN controller. Step 2 Enter co nfig a dvan ced ea p r equ est-tim eou t 20. Step 3 Enter save config. Step 4 Enter y to confirm.

Site Survey Verification

Chapter 2 Overview of the VoIP Wireless Network

Before the initial deployment of wireless phones in the WLAN, it is recommended that a site survey is performed to ve rify tha t t he APs a re pr ovid in g ade qu ate cov er age an d th at wi rele ss p hon es can ro am from one AP to another with no au dio pro blems. After the i nitial dep loym ent, it is a go od practic e to perform site surveys at regul ar inter vals to ensure contin ued cover age and roami ng.

From the Cisco Unified Wire less IP Phone 7921G, you can use the Neighbor List utility or Site Survey

tility from the Settings > Status menu.

u The Neighbor List utility provides information about the current AP and the closest neighbors tracked

the phone. For more infor mati on see Neighbor List Utility, page 2-21.

by The Site Survey utility produces a report, written as a temporary HTML file, upon termination of the

vey. This Site Survey Report is access ible fro m the phone web page for viewing or forward ing to

sur Cisco TAC for tro ubl eshoo tin g p urp oses . For mo re inf or matio n, see Site Survey Utility, page 2-22.

You should use the wireless IP phone and the Aironet Client Utility (ACU) to verify that the signal range

d transmission power provid e adeq uate co verage fo r roamin g phones.

an Use the following topi cs for infor mati on about per formin g the site survey:

• Site Survey Verification Task s, page 2- 20

• Neighbor List Utility, page 2-21

• Site Survey Utility, page 2-22

Site Survey Verification Tasks

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.

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5. Can make roaming phone calls with good quality audio and no disc onnect ions.

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

After phones are inst alled, r eque st t hat users re port any pr oble ms w hen using t heir w ire les s IP phones. When you perform a site surv ey verif icat ion and enc ounter problem s, see th e Cha

“Troubleshooting the Cisco Unified Wireless IP Phone 7921G” for assistance with finding the cause o f

the problem.

Related Topics

• Neighbor List Utility, page 2-21

• Site Survey Utility, page 2-22

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 t here is only one entry, which is the currently associat ed AP , i n th e li s t.

Site Survey Verification

pter 10,

To use the Neighbor List utility, follow these steps:

Procedure

Step 1 Configure the Cisco Unified Wireless IP Phone 7921G with th e same SSID an d

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 displ ays the cur re nt A P an d the cl oses t n eig hbo rs. For e xa mple :

SSID: abcd

hannel

Channel BSSID RSSI

Utilization

01 19:50 -3 8 50 06 cf:d0 -51 38 11 7b:b0 -4 2 61

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

example of the de tail s for a spe cifi c AP:

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

Step 5 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.

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

overlap.

Site Survey Utility

The Site Survey utility is used to actively and passively scan the wireless medium across all channels and locate APs that belon g to th e Basic Service Set (BSS). The r esults of the scans are then used he lp to identify areas of low coverage, if any, and to determine whether the APs are configured consistently as recommended in the C isco de ploy me nt g uide lin es.

When you start the Site Survey utility, the phone disassociates from the current AP and remains

isassociated for the duration of the operation.

Chapter 2 Overview of the VoIP Wireless Network

For more informatio n, see V

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

iewing the Site Survey Report on the Web, page 4-41.

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 7921G with th e same SSID an d

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.

o see more information about an AP, scroll to the desired line and press Details.

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 te rm inat e t he site s urv ey, a repor t i s g en erate d for y our vie w ing fro m th e pho ne w eb pag e.

For more informatio n, see View ing the Site Survey Repo rt on the Web, page 4-41.

In addition to the Site Survey utility in the Cisco Unified Wireless IP Phone 7921G, you can also use the Cisco Aironet Client Utility Site Su rvey Utility from a laptop PC. Refer to t he sec tio n o n “Per f ormi ng a Site Survey” in the Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for your system.

Related Topics

• Site Survey Verification Task s, page 2- 20

• Viewing the Site Survey Report on the Web, page 4-41

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Setting Up the Cisco Unified Wireless IP Phone 7921G

This chapter includes the following topics, which help you install and configure the Cisco Unified Wireless IP Pho ne 7921G on an IP telephony netwo rk:

• Before You Begin, page 3-1

• Installing the Cisco Unified Wireless IP Phone 7921G, page 3-7

• Understanding the Phone Star tup Proces s, page 3-18

Before You Begin

Before installing a Cisco Unified Wireless IP Phone 7921G, review the requirements in these sections:

• Network Requirement s, pa ge 3-1

CHA PTER

• Methods for Adding Phones to Cisco Unified Communications Ma nage r, pa ge 3-2

• Safety Informat ion, p age 3-5

Network Requirements

For the Cisco Unified Wireless IP Phone 7921G to successfully ope rate as a Cisco Unifi ed IP Phone endpoint, your networ k must support these re quirem ents:

Voice over Wireless LAN

• Cisco Aironet Acce ss Poin ts c onfi gured t o supp ort V oice o ve r WLA N (VoWL A N)

• Controllers and swit ches conf igure d to s uppo rt V oWLA N

• Security implemented for authenticating wireless voice devices and users

Note You must verify tha t y our wi rel ess ne two rk is c on figu red p rop er ly f or vo ice serv ice . For mo re

information, see the “Site Survey Verification Tasks” section on page 2-20.

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VoIP Network

• Cisco routers and ga teway s co nfi gured f or VoIP

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

–

Cisco Unified Communic ations Man ager Releas e 4.3, 5.1 , 6.0(1), 6. 1(1), or 7.0(1)

–

Cisco Unified Communications Manager Express 4.1 or later

• IP network configure d to supp ort DH CP o r ma nua l assi gnmen t of IP a dd ress, gatew ay, an d su bnet

mask

Related Topics

• Features Supported on the Cisco Unified Wireless IP Phone 7921G, page 1-4

• Understanding the Wireless LA N, page 2-1

• Methods for Adding Phone s to Cisco U nified Communications M ana ger, pa ge 3-2

• Installing the Cisco Unified Wireless IP Phone 7921G, page 3-7

• Powering On the Cisco Unif ied Wire le ss IP Phone 79 21G, page 3-16

Methods for Adding Phones to Cisco Unified Communications Manager

Before installing the wireless IP phone, you must cho ose a m eth od for a dd ing pho nes to the Cisco Unified Communications Manager database. Some methods require entering the MAC address of

he phone. Table 3-1 provides an overview of thes e metho ds.

Table 3-1 Methods for Adding Phones to the Cisco Unified Communications Manager

Database

Requires MAC

Method

Auto-registration No Results in automatic assignment of

Auto-registration with the Tool for Auto-Registered Phone s Supp ort (TAPS)

BAT Yes Allows for simultaneous registration of

Cisco Unified Communications Manager Administrat ion only

Address? Notes

directory numb er s

No Requires auto-registration and Bulk

Administration Tool (BAT ); update s information in the Cisco Unified IP Phone and in Cisco Unified Communications Ma nager Administration

multiple phones

Yes Requir es ph one s to be ad ded

individually

The following sections descri be method s for adding ph ones:

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

• Adding Phones with Auto-Regis tration an d TAPS, page 3-3

• Adding Phones with BA T, pa ge 3-4

• Adding Phones with Cisco Unified Communications Manager A dministr ation, page 3- 4

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Adding Phones with Auto-Registration

Use auto-registration to ente r phones into the Cisco Unified Communications Manager database without first gathering MAC addresses from the phones. When auto-registration is enabled,

o Unified Communications Manager automatically assigns the next available sequential directory

Cisc

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

num After registering th e pho nes, you can m odify set tings, such a s the DNs and d ev ice po ol s, by usin g

o Unified Communications Manager Administration.

Cisc

Note Auto-registration is disabled by default in Cisco Unified Communications Manager Admi nistra ti on.

You must enable and properly configure auto-registration before connecting any Cisco Unified IP Phone

o the network. Fo r i nfor ma tio n ab out ena bli ng and c onfig urin g a uto- re gist rat ion, ref er t o Cisc o

t Unified Communications Manager Admini stra tion Gui de .

Related Topics

• Adding Phones with Auto-Regis tration an d TAPS, page 3-3

• Adding Phones with BA T, pa ge 3-4

Before You Begin

• Adding Phones with Cisco Unified Communications Manager A dministr ation, 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 Cisc o Unified Communications Manager database with

ummy MAC addresses. Then use TAPS to update MAC addresses and download p re-de fin ed

nfigurations for the pho nes.

co To implement TAPS, dial a TAPS DN and follow voice prompts. When the process is complete, the

ne has downloaded its D N and ot her se tting s. Th e c orr ect MAC a ddress fo r t he phone is updat ed in

pho Cisco Unified Communications Manager Administration.

Note You must enable auto-registrat ion 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 Communications Manage r f TAPS. For Cisco Uni fied C omm un ica tions M ana ge r Rel ea se 6.0 a nd la ter relea ses , re fe r t o Cisco Unified Communications Ma nager Bu lk Adm inist ration Guide.

Related Topics

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

or detailed instr uct ions ab out B AT an d

• Adding Phones with Cisco Unified Communications Manager A dministr ation, page 3- 4

• Adding Phones with BA T, pa ge 3-4

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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 de

Table 3-2 Determining the MAC Address of the Phone

Method For More Information

Choose SETTINGS > Model Informat ion > MAC Address and look at the MAC Addr ess

field. Remove the bat tery and l ook o n th e ba ck of t he

phone.

Note BAT is included in Cisco Unified Communications Manage r 5.0 or late r, but it is a plug- in for prio r

releases.

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G

scribes how to determine the MAC ad dress of the wireless IP phone.

See “Viewing Model Informati on” section on

page 8-7

See the “Installing or Removing the Phone

Battery” section on pa ge 3-8

For detailed instruc ti ons about using BAT, r efe r to the fol low ing docum en ts :

• For Cisco Unified Communic ations Manager Release 5.0 and prior re leases , refe r to Bulk

Administration Tool User Guide for Cisco Unified Communications Ma nager .

• For Cisco Unified Communications Manager Release 6.0(1) and later releases, refer to Cisco

Unified Communications Ma nager Bu lk Adm inist ration Guide.

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

The phone load name inc lud es sym bols (-, _ ,.) and B AT d oes no t perm i t sym bo ls i n an e ntry.

Related Topics

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

• Adding Phones with Auto-Regis tration an d TAPS, page 3-3

• Adding Phones with Cisco Unified Communications Manager A dministr ation, page 3- 4

Adding Phones with Cisco Unified Communications Manager Administration

Add phones individua lly by u si ng Ci sco Unified Communications Manager Administration. To do so, obtain the MAC address for each phone before you begin. See the “Methods for Adding Phon es to C isco

Unified Communications M ana ger” se ctio n o n pag e 3-2 for instructions.

Perform one of the follow ing after c ollect ing the M AC address es:

• Cisco Unified Communicati ons Manager 5.0 and later—Cho ose Device > Phone and c lick Add

New.

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

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For additional instr u ctio n s an d con ceptual information ab out C is co Unified Communications Manager, refer to Cisco Unified Communications Manager Administration Guide a Unified Communications Manage r Sy stem Gu ide.

Related Topics

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

• Adding Phones with Auto-Regis tration an d TAPS, page 3-3

• Adding Phones with BA T, pa ge 3-4

Safety Information

Review the following warnings befo re installing the Ci sco Unified IP Phone. To see translations of these warnings, refer to the Regulatory Compliance and Safe ty Informa tion for the Cisc o Unifi ed Wireless I P

Phone 7921G and P erip heral De vice s d

Before You Begin

nd to Cisco

ocument that ac comp anie d 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.

Statement 1004

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.

Do not use the Cisco Unified Wireless IP Phone 7921G 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.

Statement 1019

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

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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 batter y safety notices apply to the ba tterie s that ar e approve d by the Cisc o Unified Wireless IP Pho ne 7921G manufactu rer .

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.

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

Statement 1040

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

Statement 1015

Caution The battery pack is int ende d for u s e onl y wi th thi s de vic e.

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

Caution To avoid risk of fire, burns, or dam ag e to y our ba tt ery pa ck, do not al low a me tal o bj ect to tou ch the

battery contacts.

Caution Handle a damaged or le aking battery with extreme care. If you come in con tact with t he 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.

Caution Do not charge the battery pack if t he a mb ient te mp erat u re ex ce eds 1 04 d eg rees Fa hren he it (40 degre es

Celsius ).

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

Celsius ).

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

on the disposal or r ecyc ling of ba tterie s.

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

Cisco part numbers.

Standard battery—

CP-BATT-7921G-STD

Extended battery—CP-BATT-7921G-EXT

Caution Use only the Cisco power supply that is compatible with your phone. To order your power supply, contact

your local dealer and refer to the list of Cisco part numbers.

Australia— Central Europe China— Japan— North America

CP-PWR-7921G-AU

—CP-PWR-7921G-CE

CP-PWR-7921G-CN CP-PWR-7921G-JP

—CP-PWR-7921G-NA

United Kingdom—CP-PWR-7921G-UK

Installing the Cisco Unified Wireless IP Phone 7921G

Note The battery and power supply are not provided with your phone. To order the battery and power supply,

contact your local dealer.

Related Topics

• Network Requirement s, pa ge 3-1

• Providing Power to t he Ph one , pa ge 3-7

Installing the Cisco Unified Wireless IP Phone 7921G

After setting up the wireless netwo rk to support voice comm unication s and conf iguring th e wireless IP phones in Cisco Unified Communications Manager, you are ready to install the p hones. This

tion includes the following installation information:

sec

• Providing Power to t he Ph one , pa ge 3-7

• Configuring Wireless LAN Set tings, page 3-15

• Using a Headset, page 3-15

Providing Power to the Phone

The Cisco Unified Wireless IP Phone 7921G uses a batt ery fo r p ower . Tabl e 3-3 lists the types of batteries available for the wireless IP phone and the maximum talk and standby times.

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Table 3-3 Batteries Available for the Cisco Unified Wireless IP Phone 7921G

Type Technology Talk Time Standby Time

Standard Lithium ion (Li-ion) Up to 11.5 hrs Up to 150 hrs Extended Li-ion Up to 15.5 hrs Up to 200 hrs

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

the battery is full y ch ar ged , an d lea ve the batteries in the charg er with no ill effects. Li- io n batte rie s can

partially charged without short ening the ba ttery life. Bat teries shou ld handle up to 4000 recharges.

Note Battery life varies because of environmental factors.

Table 3-4 Battery Charging Time Information

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G

Power Supply

Battery Type

Connected to Phone

Standard 2 hours 5 hours 2 hours Extended 3 hours 7 hours 3 hours

The following sectio ns provide i nform ation about the bat tery an d chargi ng the phone :

• Installing or Removing the Pho ne Battery, pa ge 3-8

• Using the Power Supply to Charge the Phone, page 3-9

• Using the USB C ab le to Ch ar ge th e Ph one, pa ge 3-11

• Installing and Us ing the De sktop Ch ar ger, pa ge 3-13

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

Step 1 To install the battery, insert the battery catches (as shown in Figure 3-1) in the correspon ding sl ots at the

bottom of the Cisco Unified Wireless IP Phone 7921G. Ensure that the metal contacts on the battery and

he phone are fa cing e ach othe r.

Phone Connected to PC with USB Cable

Power Supply with Desktop Charger

Step 2 Press the battery to the bo dy of the p hone until it locks into place. Step 3 To remove t h e ba tte ry, pre ss up on th e l ocki ng catc h, the n l ift and re move th e b att ery.

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222

180349

Figure 3-1 Cisco Unified Wireless IP Phone 7921G Battery Installation

Installing the Cisco Unified Wireless IP Phone 7921G

1 Locking cat ch 3 Metal contacts 2 Battery catches

Note The MAC address for each Cisco Unified Wireless IP Phone 7921G appe ars on a print ed label on the

back of the pho ne un derne a th the batt ery.

Using the Power Supply to Charge the Phone

To charge the battery in yo ur phone qui ckly, you can use the po wer supply. You must asse mble the appropriate AC ada pter plug a nd then connect th e power supp ly.

Assembling or Removing the AC Plug Adapter

To assemble or remove the AC plug adapter for the power supply, use Figure 3-1, and follow these steps:

Procedure

Step 1 Insert AC plug ad apter (a s shown in Fig ure 3-2) in slot on the power sup ply. Step 2 Push AC pl ug adap ter se cure ly into place. Step 3 To remove A C plug a dap ter, pr ess on loc king bu tto n. Step 4 Pull AC plug ada pter out of sl ot on powe r sup pl y.

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180455

Figure 3-2 Assembling and Removing the AC Plug Adapter

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G

1 AC plug adapter 3 Battery release button 2 Power supply 4 AC plug adapter removal

Charging the Phone Using the Power Supply

After assembling the powe r supp ly , you a re r eady to ch ar ge yo ur Cisc o Unified Wireless IP Phone 792 1G. Y ou can use the phon e whil e the batter y is being ch arged. For chargin g times, see

Table 3-5.

To charge the Li-ion ba ttery usin g the power supp ly, foll ow these st eps:

Procedure

Step 1 Connect the cable from the power supply to the outlet in the phone as shown in Figure 3-3. Step 2 Connect the powe r supply to an AC outlet . Step 3 Monitor the indicator light. While the battery is charging the light is red, and turns green when the

battery is fully charged.

Step 4 When the battery is charged, you can disconnect the power supply from the phone, and unplug the power

cord from the AC outlet.

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Figure 3-3 Charging the Phone Using the Power Supply

Installing the Cisco Unified Wireless IP Phone 7921G

1 AC plug adapter 2 AC power supply 3 Phone connector o n AC powe r sup pl y ca ble 4 Indicator light (LED)

Using the USB Cable to Charge the Phone

Charge the pho ne by us ing a USB cable conn ected to a USB po rt on yo ur PC. Chargi ng times ar e longe r when you use the USB cable. See Table 3-4 for charging tim es.

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180350

7921

WXYZ

ABC

DEF

JKL

MNO

GHI

TUV

PQRS

Figure 3-4 Charging the Phone Using a USB Cable Connected to a PC

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G

1 Phone connection— Insert int o slot at bottom of pho ne. 2 USB connector—Inse rt into USB port on PC. 3 Indicator LED— Indic ates the ch argi ng status .

Note When you plug the phone into the USB port, the Found New Hardware Wizard appears. Use the

following steps to avoid this pop-up window every time you use the USB cable with your phone.

To turn off the Found New Hardware Wizard when using the USB cable to charge the phone, follow these steps :

Step 1 Plug the USB cable into the Cisco Unified Wireless IP Phone 7921G. Step 2 Plug the USB connector into the USB port on your PC.

Procedure

The Found New H ardw are W iza rd dia log ope ns.

Step 3 To turn off the wizard, for Update New Software, click No, not this time. Step 4 Next, click the button next to Install the Softwa re a utom ati cal ly ( R ecom men de d). Step 5 After a time delay, the Cannot Install This Hardware dialog box appears. Click Don't prompt me again

Step 6 Click Finish to close the dial o g b ox.

to install this software.

The phone brief ly d ispl ays “U SB C onnec ted ” on t he st atu s li ne.

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While the battery is charging, the indicator light is red.

Step 7 When the battery is fully charged, the indicator light turns green. You can disconnect the USB cable

from the phone, and unplug th e cable fro m the PC.

Installing and Using the Desktop Charger

The desktop charg er ca n cha rg e b oth t he ph one ba tt ery i nsta lle d in th e p hone a nd a sp ar e batt ery at t he same time.You c an p lac e t he phone in t he d esk top ch ar ger to u s e t he spea ke rphone ca pa bil ity w hil e charging the phone and battery. For information about using the desktop charger speakerphone, refer to the “Using a Handset, He adset, and Speaker phone” i n the Cisc o Unified Wireless IP 7 921G P hone

Guide.

Installing the Cisco Unified Wireless IP Phone 7921G

To identify the desktop charger components and how to set up the desktop charger, use Fi

Figure 3-5 Desktop Charger Assembly and Components

gure 3-5.

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wer connector—Plugs into the back of the

1 Po

charger

2 AC power supp ly—Plugs int o wall outlet 7 Microphone—Single-direction, inte rnal

3 Upper compartment—For charging the

phone

4 Battery LED indicator—Red light indicates

battery is charging; green light indicates battery is fu lly cha rge d

5 Power LED indicator—Green light indicates

desktop charger has power

Using the Desktop Charger to Charge the Phone

To use the desktop charger to charge the phone and spare battery, follow these steps:

Procedure

Step 1 Plug the AC adapter into an AC outlet, and insert the connector into the back of the desktop charger. Step 2 Insert the Cisco Unified Wireless IP Phone 7921G into th e up pe r co mpa rtm en t of th e c harg er . Step 3 Insert the spare battery into the lower compartment.

6 Speaker—For speakerphone mode

microphone for speak erpho ne m ode

8 Lock hole—For inserting a cable lock

9 USB connector—For B-type USB connector on

cable that connects th e phone to a com puter

10 Lower sl ot— Fo r cha rgi ng the bat ter y

Note Y ou ca n inse rt a nd cha rge bot h the phone a nd the s pare bat ter y at th e sam e time o r y ou c an

charge them separately.

Step 4 Check the LED ind ica tor on t he ph one for c harging sta tus. T he ba tter y LE D on t he d esk top cha r ger

provides charging status for th e spare batte ry.

Table 3-5

gives the battery cha rgin g ti me infor ma ti on.

Battery Charging Times Using the Desktop Charger

The LED indicator on the phone turns green and the phone beeps when the phone battery is charged. The battery LED indi cat or o n t he de sktop c harge r turn s gr een w hen t h e spa re bat te ry i s c harge d. B at te ries will stop charging af ter the y are fu lly charge d. You can leav e the phone or battery in the charger fo r extended periods of time with no problems.

Table 3-5

Table 3-5 Battery Charging Times and Configurations for the Desktop Charger

Battery Charging Configuration Approximate Charging Times

Spare battery a lone 2 hours Phone with battery 2 hours Phone with battery and spare batt ery 2-3 hours

lists the approximate battery charging times when using the desktop charger.

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Related Topics

• Powering On the Cisco Unif ied Wire le ss IP Phone 79 21G, page 3-16

• Installing or Removing the Pho ne Battery, pa ge 3-8

• Using the Power Supply to Charge the Phone, page 3-9

Configuring Wireless LAN Settings

Before the phone can connect to the WLAN, you must configure the network profile for the phone with the WLAN settings. You ca n use tw o method s f or setting up the n etwor k profi les:

• Cisco Unified Wireless IP Phone 7921G We b Page s, pa ge 3-15

• Network Profile Menu on the Ci sco Unified Wireless IP Phone 7921G, page 3-15

Cisco Unified Wireless IP Phone 7921G Web Pages

You can access the Cisco Unified Wireless IP Phone 7921G w eb pages to set up the WL AN 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 m or e i nforma ti on a nd instruc ti ons, se e Chap ter 4, “Using the Cisco

Unified Wireless IP Phone 7921G Web Page s.”

Installing the Cisco Unified Wireless IP Phone 7921G

Network Profile Menu on the Cisco Unified Wireless IP Phone 7921G

You can use the SETTINGS me nu on the phon e and acce ss the Networ k Profile s menu to set up the network configurati on and the WL AN config urati on. For more info rmati on and inst ructions, see

Chapter 5, “Configuring Set tings on the Cisco Unified Wireless IP Phone.”

Using a Headset

Although Cisco performs some internal testing of third-party headsets for use with the Cisco Unified IP Phones, Cisco does not ce rti fy o r s uppo rt p rod uct s f rom h eadse t or h andse t ve nd ors. B ecau se of the inherent environme ntal and ha rdware inconsi stencie s in the deploy ment l ocat ions, there is not a single “best” solution that is optimal for all environments. Cisco recommends that customers test the headsets in the areas where the headsets work the best before deploying a large number of units in the network.

Cisco recommends the use of good quality external devices, like headsets that are screened against

nwanted radio frequency (RF) and audio frequency (AF) signals. Depending on the quality of these

u devices and the proximi ty to othe r device s, such as c ell phones, two-way ra dios, el ectric lights, and electric motors, some audio noise or “ hum ” ca n s till occur. Large PC monitors can also cau se h u mm ing or buzzing sounds. See the “ Safe ty Informa tion ” sect ion on page 3-5 for more informati on.

See the “Us information.

Audio Quality Subjective to the User

ing External Devices with Cisco Unified IP Phones” section on page 3-16 for more

Beyond the physical, mechanical and technical performance, the audio portion of a headset must sound good to the user a nd the p arty o n t h e fa r en d. Sou nd is sub ject ive a nd Cisco can not gua rant ee the performance of any headsets or handsets, but some of the headsets and handsets on the sites listed below have been reported to perform well on Cisco Unif ied IP Phones.

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It is up to the customer to test the equipment in the company environment to determine suitable performance. For inf orm a tion abo ut hea dset s, refe r to:

• http://www.plantronics.com

• http://www.jabra.com

Connecting Headsets

To connect a headset to the Cisco Unified Wireless IP Phone 7921G, plug it into the headset port on the right side of th e phone .

You can use the headset with al l of the features on th e Cisco Unified Wireless IP Phone 7921G,

cluding the Volume and Mute buttons. Use these buttons to adjust the ear piece volume and to mute

in the speech path from the headset microphone.

Using External Devices with Cisco Unified IP Phones

The following i nf orma tio n a pplie s w hen yo u u se e xter nal devi ces wi th t he C i sco Unified IP Phone:

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

that are shielded ( scre ened ) aga inst unw anted r adio fre quenc y (RF) a nd a udio fr eq uenc y (A F) signals.

• Depending on the qual ity of th ese devi ces and t he pro ximity to othe r devi ces such as mobil e phone s

or two-way radios, some audio noise may still occur. In these cases, Cisco recommends that you take one or more of the f ol lowi ng acti ons:

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G

–

Move the external de vice awa y from the sour ce of the RF or AF signals.

–

Route the external devic e cable s away from the source of the RF or AF signal s.

–

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

–

Shorten the length of the exte rn al de vice ca ble .

–

Apply ferrites or other suc h device s on the cable s for the ext ernal device .

Cisco cannot guarant ee the performanc e of the system be cause Cisco has no control over the quality of

xternal devices , ca ble s , an d c on n ecto r s. Th e system will pe rf or m a de quately when suitab le d ev ices are

e attached using good quality cables and connectors.

Caution In European Union countries, use only externa l speake rs, micr ophones, an d head sets that are fully

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

Powering On the Cisco Unified Wireless IP Phone 7921G

After charging the bat ter y and c onfi gur ing th e w irele ss IP phon e, y ou ar e re ady to p ower o n t he phon e and connect to the WLAN. Use the following sections for more information about starting up the phone:

• Active and Standby Phone Mod es , p age 3-17

• Understanding the Phone Startu p Process, page 3- 18

To power on the Cisco Unified Wireless IP Phone 7921G, press and hold the Power On button until the

ne begins its startup p roce ss by cyc ling th rough the se step s:

pho

1. The phone displays the Cisco Syst ems scree n.

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2. The phone screen displays these m essages as the ph one s tarts up:

• Locating Network Serv ices

• Configuring IP

• Network Up

• Configuring Unified CMList

• Registering

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

• Current time and date

• Primary director y num be r

• Main screen icons for four m enus a nd Help

• “Your current opti ons” on statu s line

• Softkey labels (Messages and Options)

When the phone passes through these stages with no errors, the phone started up properly. Now the

ne is in standby m od e an d is re ad y to p lace or rec eive cal ls.

pho The signal icon in the upper left corner shows the strength of the signal between the wireless access point

d the phone. The phone must have an ade quate signa l to successf ully plac e or rece ive calls . If the

an signal icon displays only one ba r, the weak signal ca n cause pro blems with phone performa nce.

Powering On the Cisco Unified Wireless IP Phone 7921G

If the phone does not com plete these steps successfully, see the “

Problems” section on page 10-1.

Related Topics

• Active and Standby Phone Mod es , p age 3-17

• Understanding the Phone Star tup Proces s, page 3-18

Active and Standby Phone Modes

When the Cisco Unified Wireless IP Phone 7921G is powered on, it ca n b e in one of t hes e two mod es:

• 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 consu ming power:

• Connected to an active call

• Scanning for channels

• Sending CDP packets

Resolving Startup and Connectivi ty

• Sending keep-alive messages

• Reregistering with Cisco Unif ied Communi cation s Manager

The standard battery provides up to 11.5 hou rs of talk time in active mode and the ext ended ba ttery

ovides up to 15.5 ho urs of ta lk ti me.

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Standby Mode

The phone goes into standby mode two seconds after a scan is co mplete. T he p hone will awaken from standby mode in re spo n se to t he se ev en ts :

• Pressing keys on the keypad

• Roaming between APs

• Power cycling the ph one

• Losing network connec tivity

• Losing RF connectivity

• Transmitting scheduled CDP or keep-alive packets.

The standard ba tte ry p rov id es up t o 150 ho urs of sta ndb y tim e an d th e ex tend ed b atter y pro vide s u p to 200

hours of standby time.

Related Topics

• Understanding the Phone Startu p Process, page 3- 18

Chapter 3 Setting Up the Cisco Unified Wireless IP Phone 7921G

• Resolving Startup and Conn ect ivit y Probl ems , pag e 10- 1

Understanding the Phone Startup Process

When connecting to the wireless VoIP network, the Cisco Unified Wireless IP Phone 7921G goes through a standard sta rtup pr ocess , as de scr ibe d in Table 3-6.

Note Depending on your specific net work co nfigura tion, some of the steps migh t not occur on yo ur unified

IP phone.

Table 3-6 Cisco Unified Wireless IP Phone Startup Process

Step Description Related Topics

1. Powering on the phone The Cisco Unified Wireless IP Phone 7921G has

non-volatile Flash memory in which it stores firmware images and user-defined preferences. At startup, the phone runs a bootstrap loa der that load s a phon e ima ge stor ed in Flash memory. The phone uses this image to initialize its software and hard w are.

2. Scanning for an access point

The Cisco Unified Wireless IP Phone 7921G scans the RF coverage area with it s r a dio. Th e phone se arc hes it s network profiles and scans for ac cess point s that have a matching SSID and authenti cation type . The pho ne associates with the acces s p oi nt with th e hig h est R SSI that matches with its network profile.

Providing Power to the Phone, page 3-7

Resolving Startup and Connectivity Problems, page 10-1

Interacting with Cisco Unified Wireless APs, page 2-9

Resolving Startup and Connectivity Problems, page 10-1

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Understanding the Phone Startup Process

Table 3-6 Cisco Unified Wireless IP Phone Startup Process (continued)

Step Description Related Topics

3. Authenticating with acce ss point

The Cisco Unified Wire le ss IP Pho ne 79 21G begi ns the authenticating process.

• If set for Open, then any d evice can authen ticate to the

“Authentication Metho ds” section on page 2-14

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 a cce ss is av ai la ble.

• If set for Auto (AKM), the phone look s fo r a n ac c ess

point with one of t he f ol low ing key m a nage ment options enabled:

–

WPA, WPA2, or CCKM—The username and password are authentic ated by the RADIUS server before network a cce ss is av ai la ble.

–

WPA-Pre-shared key, WPA2-P re-shared key—The phone authenticates with the access point using the p re-sh ar ed key.

4. Configuring an IP address If the unified IP p hon e i s usin g D HC P t o o btain a n IP

address, the phone queries the DHCP server to obta in on e. If you are not using DHCP in your ne twork, you mus t assign a static IP address to each phone locally.

In addition to assigning an IP address, the DHCP server directs the unified IP phone to a TFTP server. If the phone has a statically defined IP address, you must configure the TFTP server IP a ddr es s loc ally on t he p hon e; th e pho ne then contacts the TFTP server directly.

5. Downloading the load ID The unified 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 config urati on files of their load ID. Dev ice s u sing “. xm l” forma t c onf igur atio n files receive the load ID in the configuration file.

6. Downloading the configuration 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 ima ge l o ad a ph one shou ld be run ning. A profile file contains vari ous paramet ers and val ues for phone and network set tings.

• Configuring DHCP

Settings, page 5-6

• Disabling DHCP, page 5-6

• Resolving Startup and

Connec t iv it y P ro b le m s, page 10-1

• Phone Configuration Files

and Profile Files, page 2-1 2

• Configuring an Alternate

TFTP Server, page 5-7

• Phone Configuration Files

and Profile Files, page 2-1 2

• Resolving Startup and

Connec t iv it y P ro b le m s, page 10-1

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Understanding the Phone Startup Process

Table 3-6 Cisco Unified Wireless IP Phone Startup Process (continued)

Step Description Related Topics

nnecting to Cisco

7. Co Unified Communications Ma nage r

8. Registering to Cisco Unified Communic ations Manager

The configuration fi le define s how the Cisc o Unified IP Phone com mu nicates w ith Ci sco Unified Communications Manager. After obtain ing the file from the TFTP server, the phone attempts to make a TCP connection to the highest priority Cisco Unified Communic ations Ma nager on the l ist.

If the phone w as ma nual ly ad ded to the da taba se, Cisc o Unified Communications Manager identifies and registers the phone. If the phone was not ma nuall y adde d to the database and auto-registration is enabled in Cisco Unified Communications Manager, the phone attempts to auto-register itself in the Cisco Unified Communications Manager database.

• Interacting with Cisco

Unified Communications Manager, page 2-12

• Resolving Startup and

Connectivity Problems, page 10-1

• Configuring the Cisco

Unified Wireless IP Phone 7921G in Cisco Unified Communications Ma nage r, page 1-12

• Adding Users to Cisco

Unified Communications Manager Administ rati on, page 7-19

Related Topics

• Configuring Cisco Unif ied Wire less I P Pho ne s, page 7-1

• Phone Configuration Files and Profile Files, page 2-12

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CHA PTER

Using the Cisco Unified Wireless IP Phone 7921G Web Pages

This chapter describes how to set up your PC to configure a Cisco Unified Wireless IP Phone 7921G 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 Phones Remotely, pa ge 4-4

• Configuring Network Profile s, page 4-8

• Configuring USB Settings, page 4-28

• Configuring Trace Settin gs, page 4-29

• Configuring the Phone Bo ok, p ag e 4-31

• Configuring Wavelink Aval anche Serve r Settings, pa ge 4- 31

• Using System Settings, page 4-36

Setting Up Your PC to Configure the Phones

To setup new phones, use your PC a nd USB c onnectio n to ente r the initial c onfigurati on for the wireless network settings and netwo rk profiles. To save time durin g initial d eployment, you c an create a standard network profile template a nd export it to se veral phones. For m ore information, see the “Backup Settings

for Phone Configuration ” secti on on page 4-37.

Before you can con figu re ph one s by usi ng t he U SB co nnec tion, you m ust in stall d rivers an d set up th e

SB ports on the ph one a nd PC.

U Your PC must have o ne of the follow ing op er ating syste ms:

• Windows 2000 Professiona l

• Windows XP

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Installing the USB Drivers

To install the drivers on your PC, perf orm the follow ing steps:

Procedure

Step 1 Log into Ci sco. co m. Step 2 Download the installation package and “read me” file for the USB drivers from

http://www.cisco.com/cgi-bin/tablebuild.pl/ip-7900ser-crypto. The filename for “read me” inf ormatio n

is USB-Install-792 1.1-0 -0- read me .p df. B ef ore p roc eed ing, r eview thi s fil e fo r specifi c i nstr uct ions for

r PC operating system .

you

Step 3 Double-click the USB-Install-7921.1 -0-1.exe file to start the installation program. Step 4 Follow the prompts in the InstallShield Wizard.

Note If you receive a Hardware Installation warning m essage st atin g that the software has not passed

Microsoft Windows L ogo t est ing, clic k Continue.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

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 H ardw are W iza rd dia log ope ns.

Step 7 To update the ne w so ft war e, c lick the b utt on next to Yes, this time only and click Next. Step 8 Click the button next to Install the So ftw a re a utoma ti cal ly ( R ecomm en de d).

After 2-3 minutes, t he softw are inst alls and a me ssage app ears on the task b ar stat ing “Fo und New

rdware - Software installed and ready to use.”

Step 9 Click Finish when the installation is complete.

The phone brief ly d ispl ays “U SB C onnec ted ” on t he st atu s li ne.

Configuring the USB LAN on the PC

To configure the USB LAN connect ion on your PC, fo llow the se steps:

Procedure

Step 1 To setup t he U SB LA N c onn ect ion, do one of th e foll owi ng:

• 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 dou ble-cl ick the ne w LAN co nnectio n to open the Local Are a Connect ion Statu s window,

then click Properties.

Step 3 Scroll to the Internet Protocol (TCP/IP) section and click Properties. Step 4 In the Inter net Prot ocol (TCP/I P) Pr opert ies w ind ow, ch oose Use the following IP address:

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Step 5 In the IP address field, enter a static IP address for the PC: 192.168.1. ( 1 t hroug h 254 ex cep t 10 0), for

example: 192.168. 1.11

Note • By default, the Cisco Unified Wireless IP Phone 7921G is con fi gured w ith 1 92. 16 8.1 .100 so y ou

cannot use thi s I P a ddre ss f or t he 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

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

Setting Up Your PC to Configure the Phones

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 page, follow these steps:

Procedure

Step 1 Open a Wi ndows br owser . 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 phon e displa ys. See Tabl e 4-1 for details about this web page.

Step 3 Use the hyperl inks in the l eft column of the web page to confi gure setti ngs for th e phones. For

information, see these sections:

• Configuring Network Profile s, page 4-8

• Configuring USB Settings, page 4-28

• Configuring Trace Settin gs, page 4-29

• Configuring Wavelink Aval anche Serve r Settings, pa ge 4- 31

• Configuring the Phone Bo ok, p ag e 4-31

• Using System Settings, page 4-36

Step 4 After entering the new settings, d isconnec t the USB cable f rom the phone. T he settings are active

immediately.

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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 se t up other phones. Before plugging the USB cable into another phone, wait approximate ly 12-15 secon ds for the USB int erface on the PC to shut down.

To connect to another ph one, follow thes e steps:

Procedure

Step 1 Plug the USB cable into a Cisco Unified Wireless IP Phone 7921G.

The phone brief ly d ispl ays “U SB C onnec ted ” on t he st atu s li ne.

Step 2 Access the we b page for t he ne w p hone by fol lowi ng the st eps in “Accessing the Phone Web Page”

section on page 4-3.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

Related Topics

• Installing the USB Driv ers, page 4-2

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

• Using the USB C able to Co nfigu re Phone s, page 4-4

• Accessing the Phone Web Page, page 4-3

Updating Phones Remotely

You can update settings on a Ci sco Un ified Wire less IP Pho ne 79 21G tha t is al rea dy conf igur ed and in use. To do so, you can use the wi reless LAN to remotely acces s and config ure these phones.

Use these sections for in format ion about remotel y updating pho nes:

• 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 change s to the ph one b y using the we b pag e, y ou mus t use C isco Unifi ed C omm un icat ions Manager Administration to enabl e Web Access and Phone Book Web Acce ss.

To allow configuration privileges, follow these steps:

Procedure

Step 1 Log into Cisc o Unifi ed C omm unic atio ns Ma nage r Admi nistra tion. Step 2 Search for the phone in Cisco Unified Communications Manager Administration by choosing Device >

Phone and ent er s ear ch i nf orm ati on su ch as the D N.

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Step 3 Click on the DN of the phone that you want to set th e privi leges. Step 4 Open the Phone Con figur at ion wi ndo w, s crol l do wn to Pro duct Spec ifi c Con fi gura tio n La you t, a nd

enable thes e privi lege s:

• In the Web Access field, select Full from t he d ro p-d own m enu.

Step 5 Click Save to make the change. Step 6 You must reset the phone to enable conf igurati on privilege s on the web pag es for this phone .

Accessing the Configuration Web Page for a Phone

You can access the web pag e for any C isco Unified Wireless IP Phone 7921G t ha t i s co nnect ed t o th e WLAN. Be sure th e pho ne i s powe red o n an d co nne cte d.

To access the web page for the Cisco Unified Wireless IP Phone 7 921G follow these steps:

Procedure

Updating Phones Remotely

Step 1 Obtain the IP address of the Cisco Unified Wireless IP Phone 7921G by using one of the se method s:

• Search for the phone in Cisco Unified Communications Manager Administration by choosing

Device > Phone > DN.

• Click Find to displa y al l o f th e phone s and t he I P a ddresse s that ar e regi stere d wi th

Cisco Unified Communicat ions M anag er A dmi nist ratio n. When yo u sel ect your p hon e, t he P h one

figuration window displays. The IP address of the phone is linked to the web configuration page.

Con Or

• You can open a web b rowse r, ent er t he fol low ing UR L:

https://<I The IP

P_address>/index.html

_address variable is the phone IP address that is hypertext linked in Cisco Unified

Communications Manager Admini stration.

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

or Always to accept the application.

Step 2 Click on the phone IP address. The phone HOME web page displays. From this page, you can configure

network profiles, USB settings, trace settings, Wavelink settings, and certificates. Table 4-1 lists the available config urati on items .

Step 3 Log into the web page with the username: admin and password: Cisco. The HOME web page has a menu

on the right-hand si de of the windo w with the fol lowi ng subme nus:

• SETUP

–

NETWORK PROFILES

–

USB SETTINGS

–

TRACE SETTI NGS

–

WAVELINK SETTINGS

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• CONFIGURATIONS

• INFORMATION

• STATISTICS

• STREAM STATISTICS

• SYSTEM

–

CERTIFICATES

–

PHONEBOOK

–

NETWORK

–

WIRELESS LAN

–

DEVICE

–

WIRELESS LAN

–

NETWORK

–

STREAM 1

–

STREAM 2

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

–

TRACE LOGS

–

BACKUP SETTINGS

–

PHONE UPGRADE

–

CHANGE PASSWORD

–

SITE SURVERY

–

DATE AND TIME

–

PHONE RESTART

Step 4 Make chan ges to web pa ges a s neede d. Fo r infor mat ion, see the fol lowi ng secti ons:

• Configuring Network Profile s, page 4-8

• Configuring USB Settings, page 4-28

• Configuring Trace Settin gs, page 4-29

• Configuring Wavelink Aval anche Serve r Settings, pa ge 4- 31

• Configuring the Phone Bo ok, p ag e 4-31

• Using System Settings, page 4-36

Step 5 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 6 Reset the phone from Cisco U ni fied Communications Manager Administration to disable full access to

the web pages. Be sure to chan ge t he W eb Ac cess p rivi le ges a nd re se t the ph one to pr e vent user s fr om mak ing

nfiguration change s on the phone w eb pages.

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

4.x, and you try t o re gist er t o Ci sco Unifi ed C omm un icatio ns M ana ger A dm inist rat ion 5 .x or l ater, the Phone Configuration web page pa ssword mi ght be set to “Cisco. ”

HOME: Summary Web Page

The HOME: Summary we b pag e d ispl ay s devi ce se ttin gs a nd r elat ed in for mat ion f or the ph one. At t he top of the web p age, t he SEP num ber an d Ph one D N d ispl ay. Tabl e 4-1 describes the items available from the HOME: Summ ar y se ct ion o f the web p age.

Table 4-1 HOME: Summary Web Page

Item Description

Home: Summary

Active Network Profile Name of the profile that the phone is curren tly using. SSID SSID that the phone is currently usin g. Access Point Name of the access point (AP) to which the phone is associated. MAC Address MAC a dd ress o f th e phone .

Network Information

IP Address IP address of the phon e. Subnet Mask Subnet mask used by the phone. Default Router IP address for th e defaul t gateway t hat the phon e is usin g. 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

Phone Directory Num ber Prim ar y DN for t he pho ne.

Updating Phones Remotely

server to which the phone is registered.

Related Topics

• Accessing the Phone Web Page, page 4-3

• Configuring Network Profile s, page 4-8

• Configuring USB Settings, page 4-28

• Configuring Trace Settin gs, page 4-29

• Configuring the Phone Bo ok, p ag e 4-31

• Using System Settings, page 4-36

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Configuring Network Profiles

You can config ure u p to four pr of iles f or a ph one to t ake a dvant age of W LAN e nv ironm e nts. Y ou can add names to the profiles and enable on e or more of th e profil es for the pho ne to use. Th e Networ k Profiles section on the web page displa ys the follo wing infor mation abo ut each phone :

• Profile—Displays a list of four pro files.

• Name—Lists the name for the profile.

• SSID—Lists the SSID used by the profile.

• Status—Indicates which profiles are active or inactive.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

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

the Configuration Web Page for a Phone” section on page 4-5 , and then click N

For more informatio n abo ut con figur ing net work pr ofile s, see th ese sec tions:

• Network Profile Settings, page 4-8

• Using Network Profil e T empl ates, page 4-37

• Configuring Wireles s Set tings i n a N etwor k Profi le, pa ge 4-13

• Configuring Wireless LAN Sec urity, pa ge 4-14

• Configuring IP Network Settings, page 4-25

• Configuring the Alternate TFTP Server, page 4-26

• Configuring Advanced Network Pro file Setti ngs, pag e 4-27

Network Profile Settings

You can configure the settings for a profile by using this web page. You can also modify or view configured pro fil es by cl ickin g o n t h e pro file. Table 4-2 describes the settings and provides references for more informa ti on.

Table 4-2 Network Profile Settings Items

Item Description For More Information, See...

Wireless

Profile Name Provides a name f or the pro file to make it e asy

SSID Assigns the Service Set Identifier (SSID) to

Call Power Save Mode Automatically detects the type of power saving

to identify ; up to 63 alph anum eric char acter s.

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

mode that ac tive a nd i dle ph ones r e quire . T he phone can use U-APSD or PS-Poll when it is idle. When the phone is in an active call, the power save mode is controlled by Call Power Save Mode.

Accessing

ETWORK PROFILES .

Configuring Wireless Settings in a Network Profile, page 4-13

Associati ng to an AP , page 2-10

802.11 Standards for WLAN Communications, page 2 -3

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Table 4-2 Network Profile Settings Items (continued)

Item Description For More Information, See...

802.11 Mode Determines the signa l mode or prio rity for selecting signal modes available in the WLAN. Options are:

• 802.11 b/g—Use onl y 2.4 G Hz band

• 802.11a—Use onl y 5 GH z ba nd

• Auto, 802.11b/g prefe rred ove r 802.11a

(dual band)

• Auto, 802.11a prefer red over 802 .11b/ g

(dual band)

Note The preferred band, if available, will

be used at power-on, but the phon e may switch to the less preferred 2.4 GHz band, if available, and the preferred band is lost . Onc e t he p hon e has connected to t he l ess pr efe rred band, it will not scan for the preferred band if the current band is acceptable, and may remain connected to the less preferred band.

Configuring Network Profiles

802.11 Standards for WLAN Communications, page 2 -3

• Auto, signal streng th (R SSI)— Use

strongest signal in dual b an d env iron me nt

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

and signal strength is suffic ient , the phone does not scan.

Continuous—Always scans. Single AP—Only scans at pow er on or if the

AP connection to the network is lost.

Restricted Data Rates Enables or disables the restriction of the

upstream and downstream PHY rates according to Cisco CX (C CX) V4 T raffic Stream Rate Set IE (S54.2.6 ). The default is disabled.

Note It is recommended that the end point

and the AP be c onf igure d at TSp ec 1 2 because a lower rate may cause network congestion.

Associating to an AP, page 2-10

Product-Specific Configuration Opt ions fo r the Cisco Unified Wireless IP Phone 7921G, pag e 7- 13

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Table 4-2 Network Profile Settings Items (continued)

Item Description For More Information, See...

WLAN Security

Security Mode Sets the authentication and encryption

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methods for this profil e:

• Open—Open access to APs

• Open+WEP—O pen ac cess w ith WE P

encryption (require s an encr yption key)

• Shared Ke y+W E P—S h ar ed k ey

authentication with WEP (requires an encryption key)

• LEAP—Cisco proprietary authentication

and encryption using a RADIUS ser ver (requires a user na me a nd passw ord )

• EAP-FAST—Authentication and

encryption using TLS and RADIUS server (requires a user na me a nd passw ord )

Configuring Wireless LAN Security, page 4-14

Configuring the Authentic a t io n M o d e , page 4-15

• EAP-TLS—Uses Public Key Certificates

(PKI) to secure communication to the RADIUS authentication server. A dynamic session-based key is de rived from the Cisco Unified Wireless IP Phone 7921G and RADIUS server to encrypt data using a client certificate for authentication.

• PEAP—This method uses name and

password authentica tion based on Microsoft MSCHAP V2 authentication.

• PEAP with Server Certificate

Authentication—The Cisco Unified IP Phone can validate the server certificate during the aut hen tica tio n han dsha ke ove r an 802.11 wireless link. T his functionality is disabled by default and is enabled in Cisco Unified CallManager Administration.

• Auto (AKM)—Automatic authenticated

key management using:

–

WPA, WPA2 (requires a username and password)

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WPA-Pre-sh ar ed k ey , WPA2-Pre-shared key (requir es a passphrase/pre- share d k ey)

–

CCKM (requires a username and password)

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Table 4-2 Network Profile Settings Items (continued)

Item Description For More Information, See...

Export Security Credentials

Controls whether the wire less secur ity credential data can be exported in the configuration file.

• True—Allows exporting the data

• False—Blocks exporting the data Note When using templates, the security

credentials m us t b e re -ent er ed f or security reasons after exporting the configuration.

Wireless Security Credentials

Required for LEAP, EAP-FAST, and Auto (AKM) authentication methods

Username Assig ns the netwo rk authent ication use rname

for this profile

Password Assigns the network authentica tion pas sword

for this profile

WPA Pre-shared Key Credentials

Sets the Pre-shared key for this profile

Pre-shared Key Type Determines the key type: Hex or ASCII Conf iguring th e Pre-shar ed Pre-shared Key Identifies the key

Wireless Encryption

Required for Open+WEP and Shared+WEP authentication methods

Key Type Determine s the en cryption key type: Hex or

ASCII

Encryption Key 1-4 Identifies the Transmit Key:

Configuring Network Profiles

Backup Settings for Phone Configuration, page 4-37

Configuring the Userna me and Password, page 4 -16

Key, page 4-16

Setting Wireless Encryption, page 4-18

Certificate Options

Client EAP-TLS Certificate

Validate Server Certificate

• Encryption Key character string

• Key Size of 40 or 128 characters

Required for EAP-TLS authentication mode. Determines the certificate used for

authentication:

• Manufacturing issued

• User installed

Enables the phon e t o use the se rver cer tificat e. Two options: True or False .

Installing Auth en tic a ti on Certificates for EA P-T LS Authentication, pa ge 4-19

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Table 4-2 Network Profile Settings Items (continued)

Item Description For More Information, See...

IP Network Configuration

Obtain IP address and DNS servers automatically

Use the following IP address and DNS servers

TFTP

Obtain TFTP servers automatically

Use the following TFTP servers

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

Enables DHCP Configuring IP Network

Settings, page 4-25

Disables DHCP and uses these static settings:

• IP Address

• Subnet Mask

• Default Router

• Primary DNS

• Secondary DNS

• Domain Name

Determines whether DHCP assigns the TFTP server

Configuring the Altern ate TFTP Server, page 4-26

Assigns static TFTP server IP addres ses for:

• TFTP Server 1

• TFTP Server 2

Network Profile Advanced Settings

TSPEC Settings

Minimum PHY Rate Minimum data rate that outbound traf fic uses

Note Cisco APs support only PHY rates of

6, 11, 12, or 2 4.

Surplus Bandwidth Excess bandwidth beyond application

requirements

Antenna Settings

Antenna Selection for

802.11A

Antenna Selection for

802.11G

802.11G Power Settings

• Vertical

• Horizontal

• Diversity

• Vertical

• Horizontal

• Diversity

Channel Enabled Identifies enabled channels in WLAN to

improve scanning for the ph one

Max Tx Power Sets the maximum transmit power for the

phone

Check All/Clear All/Check Non-overlap

Three buttons that check all channels and Tx power levers, o r cle ar a ll. The n on- overl ap button disables over lap.

Configuring Advanced Network Profile Settings, page 4-27

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Table 4-2 Network Profile Settings Items (continued)

Item Description For More Information, See...

802.11A Power Settings

Channel Enabled Identifies enabled channels in WLAN to

improve scanning f or t he ph one

Max Tx Power Sets the maximum transmit power for the

phone

Check All/Clear All/Check Non-DFS

Three buttons that check all channels and Tx power levers, or cle ar a ll. The n on- overl ap button disables DFS.

Note If you uncheck all channels in the 802.11 G Power Set tings or 802.1 1 A Power Setti ngs, the phone

cannot access the WLAN.

Related Topics

• Accessing the Phone Web Page, page 4-3

Configuring Network Profiles

• Configuring Wireles s Set tings i n a N etwor k Profi le, pa ge 4-13

• Configuring Wireless LAN Sec urity, pa ge 4-14

• Setting the Wireless Security Credentials, page 4-15

• Setting Wireless Encryption, page 4-18

Configuring Wireless Settings in a Network Profile

You must configure wireless sett ings in a profile to enable the phon e to access the w ireless networ k. To configure the wireless settings, refer to Ta

Procedure

Step 1 Choose a n etwor k p rof ile that you wa nt to co nfi gure . Step 2 Enter a recognizable name up to 63 characters and numbers in length in the Profile Name field. Step 3 Enter the SSID that is already confi gured in the WLAN. This is the SSID that the phone uses to associate

with access points.

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

ble 4-2 and follow these steps:

Step 4 Choose the sca nnin g f reque ncy of the p hon e in t he Singl e Acc ess Po int fiel d as Tr ue (less frequent

scanning) or False (more freq ue nt sc anni ng ).

Step 5 Set the Call Power Save Mode to U-APSD or PS-Poll to conserve battery power. Step 6 Choose the signal mode or priority of signal modes in the 802.11 Mode field that is used by your WLAN,

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Configuring Wireless LAN Security

The Cisco Unified Wireless IP Phone 7921G supports many types of au thenti cation. Authe nticat ion methods might req uire a speci fic e ncry pt ion met hod or y ou can c hoos e be twe en se vera l e ncry pti on methods. When co nfig uri ng a n etw ork p rof il e, yo u can ch oose o ne of th ese a uthe nti cat ion m etho ds:

• Open—Provides access t o a ll ac cess po ints w it hout WEP K ey a uthent icat ion /encry pti on.

• Open plus WEP—Provides access to all acce ss points an d au then tica tio n thro ugh the use of one or

more WEP Keys at the local access point.

• Shared Key plus WEP—Provides share d key authen ticatio n through th e use of WEP Keys at the

local access point.

• LEAP— Exchanges a u serna me and cr ypt ogra phic all y sec ure passwo rd with a RA DIU S se rver fo r

authentication in t he n etw ork. L EAP i s a Cisco p rop rie tar y v ersi on of EA P.

• EAP-FAST—Exchang es a u ser name and pa ssw ord an d with a RAD IUS serv er f or auth enti cation in

the network.

• EAP-TLS—Uses a dynami c session-bas ed WEP key derived from the client adap ter and RAD IUS

server to encrypt d ata and a client cert ificate for authentication. It uses PKI to secu re communicat ion to the RADIUS authentication server.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

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

certificate on the ph one. Th is metho d uses name and passwo rd aut hentic ation bas ed on Micr osoft MSCHAP V2 authentication.

• PEAP with S erver Certificate Authentication—The Cisco Unified IP Phone can validate the server

certificate during th e authe nticat ion handsh ake over an 802.11 wir eless link . This func tiona lity is disabled by default and is enabled in Cisco Unified CallManage r Administ ration.

• Auto (AKM)—Automa tic au thentic ated key manage ment in whic h the pho ne selects th e AP and

type of key managem ent sc heme , which incl udes WPA, WPA2, WPA- Pre-sha red key, WPA2-Pre-shared ke y, or C CK M (w hic h uses a wi rel ess do ma in se rv er ( WD S)) .

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 ). A KM m ode suppor t s only au then t icat ed ke y-m anag emen t ty pes (WPA, WPA2, WPA-PSK, WPA2-PSK, CCKM).

The type of authentic ation 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 4-3 provides a li st of support ed authent icati on and en cryption schemes that you can config ure on th e Cisco Unified Wireless IP Phone 7921G.

Table 4-3 Authentication and Encryption Configuration Options

Authentication Mode Wireless Encryption Wireless Security Credentials

Open None None—acce ss to all APs Open plus WEP Static WEP

None—access to all APs

Shared Key plus WEP Static WEP

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

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Uses shared -key wit h AP

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Table 4-3 Authentication and Encryption Configuration Options (continued)

Authentication Mode Wireless Encryption Wireless Security Credentials

EAP-FAST (with optional CCKM) Uses WE P 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 Pa ssword

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

Configuring Network Profiles

Requires server and client certificates.

Requires server side certificate.

Uses TKIP Requir es U ser na me and P a ssw ord

Uses AES Requires Username and Password

Uses TKIP Requ ir es Pa ss phras e

Uses AES Re qu ir es P as sphr ase

Note Beginning with Cisco Wireless IP Phone 7921G 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 n etw ork pro fil e t hat you wa nt t o c onf igure . 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 4-3 for more informa tion.

Step 3 Click Save to make the change.

Setting the Wireless Security Credentials

When your network uses EAP-FAST, LEAP, EAP-TLS, PEAP, or Auto (AKM) with WPA, WPA2, CCKM for user au then t icat ion, yo u m ust co nfigu re b oth t he use rnam e an d a pa ssword on the Ac ce ss Control Server ( ACS) an d th e pho ne.

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Note If you use doma ins wi thi n your ne two rk, y ou must en t er the u ser name w ith th e doma in n am e, i n t his

format: domain\username.

For information about setting security credentials, see these topics:

• Configuring the Username an d Password, pa ge 4-16

• Configuring the Pre- share d Ke y, pa ge 4-16

• Setting Wireless Encryption, page 4-18

Configuring the Username and Password

To enter or change the usern ame or passwo rd for t he netw or k profi le, you must use the same use rnam e and the same password string tha t is configur ed in the RAD IUS serve r. The maxim um length of t he username or password entry is 32 char acters.

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

Procedure

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

Step 1 Choose the network profile. Step 2 In the Username field, enter the network username for this profile. Step 3 In the Passwor d f ield, ent er the ne two rk pa sswor d str ing for this pro fil e. 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 7921G supports ASCII and hexa decim al formats. Yo u must use one of these formats when setting up a WPA Pre-shared key:

Hexadecimal

For hexadecimal keys, you must enter 64 hex di gits (0-9 and /or A-F); for example, AB123456789CD012345 6789 0EFAB123 4567 89CD0 123456 789 0EF3456 789 C

ASCII

For ASCII keys, you must e nter a cha ra cter st rin g tha t us es 0 -9, A -Z (upp er an d low er ca se), incl ud ing symbols and is from 8 to 63 charac ters in leng th; for ex ample , GREG12 356789 ZXYW

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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 ke y.

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

• Hex

• ASCII

Step 3 Enter an AS CI I st ring or He x di git s in t he Pa ssphr ase/ Pre-sh ar ed k ey fie ld . See “Pre-shared Key

Formats” section on page 4-16.

Step 4 Click Save to make the change.

Configuring Network Profiles

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Setting Wireless Encryption

If your wireless network uses WEP encrypt ion, and you have set the Authen tication Mode as Ope n + WEP or Shared Ke y + W EP, y ou mus t en t er an ASC II or hexa dec imal WEP K ey.

The WEP Keys for the p hon e mus t ma tch the W EP Key s a ssigne d t o th e acc ess poin t. C is co Unified

reless IP Phone 7921G and Cisco A irone t Ac cess Poi nts su ppo rt b oth 40- bit a nd 128-bi t en crypt ion

ys.

WEP Key Formats

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

Hexadecimal

For hexadecimal ke ys, yo u c an use one of the f ollow ing key s ize s:

• 40-bit—You must ent er a 1 0-d igi t en cr yption k ey string t hat u ses the hex di gits (0- 9 a nd /or A-F);

or example, ABCD123 456 .

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

or example, AB123456 789 CD012 345 6789 0EF.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

ASCII

For ASCII keys, you mu st e nte r a ch ar ac ter str ing t h at uses 0-9, A -Z ( upp er and l owe r ca se ), and al l symbols.

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

• 128-bit—You must ent er a 13-ch ar act er st rin g; f or ex ampl e, GR EGSSE CRET13 .

Entering Wireless Encryption Keys

To set up WEP keys, follow these step s:

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, clic k 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 4-18.

Step 6 Click Save to make the change.

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Related Topics

• Configuring IP Network Settings, page 4-25

• Configuring the Alternate TFTP Server, page 4-26

• Configuring Advanced Net work Profil e Settings , page 4- 27

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 7921G 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 7921G and the Cisco Secure Access Control Server (ACS) must ha ve ce rtifi cat es i nsta lled and c onfig ured pr operl y. I f your w ir ele ss netw or k us es EAP-TLS for authenticatio n, you can use the Manufacturing Installed Certificate (MIC) or a user installed certificate for authentication on the phone.

Configuring Network Profiles

Manufacturing Installed Certificate

Cisco has included a Manu facturi ng Instal led Certifi cate (M IC) in the phone at the fa ctory. During EAP-TLS au th entic a tion t he AC S serve r nee ds to ve rif y th e trust of t he ph one and t he phon e

eds to verify the trust of the ACS ser ver.

ne To verify the MIC, the Manufacturing Root Certificate and Manufacturing Certificate Authority (CA)

tificate must be exported from a Cisco Unified Wirel ess IP Phone 7921G and installe d on the Cisco

Cer

S server. These two ce rtificates are pa rt of the trusted cer tif ica t e ch ain u sed to v er ify the MIC by the

AC Cisco ACS server.

To verify the Cisco ACS ce rtificate, a trus ted subor dinate certi ficate (if any) and root certifica te (created

om a CA) on the Cisco ACS server must be export ed and installe d on the phone. Th ese cert ificate (s)

fr 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 a pproved ce rtificat e install ed on the Cisco Unified Wireless IP

e 7921G.

Phon During EAP-TLS authentic ation, the ACS server nee ds to verify the trust of the pho ne and the phone

eds to verify the trust of the ACS ser ver.

ne To verify the authenticity of the user installed certificate, a trusted subordinate certificate (if any) and

oot certificate f rom the CA that approve d the u ser cert ificate must be instal led on t he Cisco ACS se rver.

r These certificate(s) are part of the trusted certificate chain used to verify the trust of the user installed certificate.

To verify the Cisco ACS ce rtificate, a trus ted subor dinate certi ficate (if any) and root certifica te (created

om a CA) on the Cisco ACS server must be export ed and installe d on the phone. Th ese cert ificate (s)

fr are part of the trusted certificate chain used to verify the trust of the certificate from the ACS server.

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Configuring Network Profiles

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

Table 4-4 Installing the Certificate for EAP-TLS

Task From For more information, see...

1. Set the Cisco Unified

Communications Manager date and

Cisco Unified Wireless IP Phone 7921G web page

Setting the Date and Time, page 4-20

time on the phone.

2. If using the Manufactu ring Installed

Certificate (M IC):

• Cisco Unified Wireless IP Phone

7921G web page

Exporting and Inst alling the Cert ificates on the ACS, page 4-21

a. Export the CA root certificate

and manufacturing CA certificate.

b. Install certificates on the

• Internet Explore r

• Microsoft Certificate Services

Exporting the CA Certificate from the ACS Using Microsoft Certificate Services, page 4-21

Cisco ACS server and edit the trust list.

c. Export the CA certificate from

the ACS server and import it to the phone.

3. If using a user installed certificate: a. Generate the Certificate

Cisco Unified Wireless IP Phone 7921G web page

Requesting and Importing the User Installed Certific ate, page 4-22

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 the 7921G.

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

page 4-23

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 7921G to be set correc tly. The da te and time on the phone might chan ge whe n it is registered to Cisco Unified Communications Manager.

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

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

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

Procedure

Step 1 Select Date & Time from the left navigation pa ne. 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 se rver.

To export the manufacturi ng root cer tificate an d manufacturing CA c ertifica te to the ACS serv er, follo w

hese steps:

Configuring Network Profiles

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

Depending on the type of certif icate you export fro m the ACS, use one of the foll owing met hods:

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

certificate, see Exporting the CA Certif icate fr om the ACS Usin g Microso ft Certif icate Ser vices,

page 4-21.

• 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 4-22.

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.

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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 pa ge, hi ghligh t the cur ren t CA ce rti fica te in t he t ext box , c ho ose D E R unde r En codi ng

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

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

Step 1 From Internet Explorer, choose Tools > Internet Options, then click the Content tab. 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 an d inst all th e cert ific ate on the pho ne, fol low thes e step s:

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 Cer tificate I nstalla tion page, th e Common Name f ield should match the

user name in the ACS server.

Note You can edit the Common Nam e fi eld if yo u wi sh. M ake su re t hat it m atc hes t h e use r name in

the ACS server. See “Configuring the ACS Serv er Set up” sec tion o n p age 4-23.

Enter the information to be displayed on the certificate, and click Submit 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 f or si gning . The CSR text is encoded and shou ld be sent to the Ce rtific ate Auth ority for signing. The CSR text can

sent by e-mail or another method determined by your CA administrator. The following steps describe

be the basic CSR approval proce ss on the CA web p age.

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Step 4 From the Microsoft Certificate Se rvices Request a Certifica te page, select A dvanced certif icate 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 7921G and paste it in the Saved

Request text box, the n clic k 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 ph one web pag e 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 7921G.

Configuring Network Profiles

To install the certificate, follow these steps:

Step 1 Export the Authentication Server Root Certificate from the ACS. See Exporting Cer tifica tes from the

ACS, page 4-21.

Step 2 Go to the phon e web pa ge a nd c hoose 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 config uration tool, see the ACS online help or the User Guide

for Cisco Secure ACS for Windows .

Procedure

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

set up. Typically, the use r name incl udes the phone MAC ad dress at th e end , for exa mple, CP-7921G-SEP<xxxxxxxxxxxx>. No password is necessary fo r EAP-T LS.

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

page. See “Requesting and Import ing the Us er Install ed Cert ificate ” sect ion on page 4-22.

Step 2 On the Syst em Conf igur ation pa ge, in th e EAP-T LS section , en able these fields :

• Allow EAP-TL S

• Certificate CN comparison.

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

Step 4 Enable both the Manufac turing Root Certif icat e and Manu factur ing CA Certi ficate in the ACS

Configuring PEAP

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

Before You Begin

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

Manufacturi ng CA Cer tifi cate t o the A CS serv er.

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.

Before you configure PEAP au thent icatio n for the phon e, make sur e these Cisco Secure ACS requirements are met:

• The ACS root certificate must be installed

• Enable the Allow EAP-MSCHAPv2 setting

• User account and passw ord must be conf igur ed

• For password authenti cat ion , you c an us e th e l ocal AC S dat aba se or a n ext erna l o ne (s uch a s

Windows or LDAP)

Enabling PEAP Authentication

To enable PEAP authent icatio n on the phone , follow t hese step s:

Procedure

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

Authentication Mo de, page 4-15 .

Step 2 Enter a us er name an d p asswo rd.

Enabling PEAP (MS-CHAPv2) Server Certificate Authentication

To enable server identity validation, follow these steps:

Procedure

Step 1 From the Network Profile Advance Profile page, choose PEAP as the security mode in the WLAN

Security section.

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Step 2 In the Certificate Options section, choose True in the Validate Server Certificate subsection. Another

window displays with avai lable c ertific ates. The display ed fields ar e Type , Common Name, Issuer Name, Valid From and Valid To. You can install, export, or import certificates as required. If you are importing a cer tifi cat e t o th e pho ne, you c an br owse the se rv er f or the f ile.

Step 3 If you choose EAP-T LS authen ticatio n, the User Certif icate In stallation page displa ys. You only have

to enter the Common Name field in the first step to use EAP-TLS. There are four steps to complete the EAP-TLS User Certificate Installation. Click Submit when done.

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 “Interacting

with the DHCP Server” section on page 2-13.

When DHCP is disabled in t he netw ork , you m ust co nfi gur e t he f ol lowin g setti ngs in the Static Settings

nu:

• IP address

Configuring Network Profiles

Enabling DHCP

Step 1 Choose the n etw ork pro fil e t hat you wa nt t o c onf igure . Step 2 Under the IP N etwor k C onfi gurat ion are a, c hoose thi s option:

Step 3 Click Save to make the change.

• 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 h as a n IP addr ess.

• Ensure the default route r IP address is on the same subnet as t he host IP addr ess.

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

Procedure

Obtain IP address and DNS servers automatically

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Disabling DHCP

Step 1 Choose the n etw ork pro fil e t hat you wa nt t o c onf igure . Step 2 Under the IP N etwor k C onfi gurat ion are a, c hoose thi s option:

Step 3 You must enter these required IP addresses. See Table 4-5 for de scri ptions of the se fi el ds. Step 4 Click Save to make the change.

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

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

Procedure

Use the following IP addresses and DNS servers

Table 4-5 Static IP Addresses When DHCP is Disabled

Static Setting Description

IP Address Inter ne t Pro toc ol ( IP) a ddr ess of t he p hon e Subnet Mask Su bnet m ask use d by t he p hone Default Route r 1 Primary gateway u sed b y th e pho ne DNS Server 1 DNS Server 2 TFTP Server 1 TFTP Server 2

Primary DNS server used by the phone Optional backup DNS serve r used by the pho ne Primary TFTP serv er u sed by t he phon e. Optional back up TFTP serv er us ed by the phon e

Domain Name Name of the Domain Name System (DNS) domain in which the

phone resides

Configuring the Alternate TFTP Server

If you use DHCP to dire ct the C isco U nifie d I P Ph ones t o a TF TP serve r, y ou can also a ssign an alternative TFTP serve r to so me p hon es instea d of the o ne assi gned by DHC P.

Note If yo u di sable DHCP, th en yo u must use the se ste ps to set up t he T FT P se rver fo r th e phone .

To assign an alter nate TFT P serv er to a pho ne, foll ow th ese st eps:

Procedure

Step 1 Choose the n etw ork pro fil e t hat you wa nt t o c onf igure . Step 2 Under the TFTP ar ea, c hoose thi s optio n:

Use the following TFTP servers

Step 3 You must enter the required IP addresses. See Table 4-5 for description s of t hese f iel ds.

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Step 4 Click Save to make the change.

Configuring Advanced Network Profile Settings

The network profiles web page has an advanced profile settings subsection that is a hypertext link from the network profile pa ge. I t d isplay s Tr af fic Speci ficat ion (T SPEC) , Ant enna , an d pow er se ttin gs. You can modify these set tings. Th e descr iption of e ach ar e:

• TSPEC—Parameters that advertise informat io n about gen erate d traf fic for Call Admi ssion Con tr ol

(CAC) to the AP.

• Minimum PHY r ate— Lo west r ate t h at outbo und t raff ic is e xpec ted to u s e be fo re t he phon e ro am s

to another AP.

• Surplus Bandwidth Allowance—Fractional number that specifies the excess allocation of time and

bandwidth above application rates required to transport a MAC service data unit (MSDU) in a TSPEC frame.

Configuring Network Profiles

Note If your wireless LAN has access points that us e 802.11b an d you plan to use Call Admissi on Control

(CAC) with TSPEC, then you need to modify the PHY rate to a supporte d rate for your 802.11b access points.

To make changes to the advanced settings, follow these steps:

Procedure

Step 1 Choose the n etw ork pro fil e t hat you wa nt t o c onf igure . Step 2 Click the Advanced Profile link at the top of the page. Step 3 In the TSPEC Setting, keep the Minimum PHY Rate: 12 Mbps

Note If you are using 802.11b APs and plan to use Call Admission Control (CAC) with TSPEC, then

set the PHY Rate to a rat e t hat the AP s s uppo rt s uch a s 1 1 Mb ps.

Step 4 In the Surplus Bandwidth field, enter the appropriate values. Step 5 In the Ant enna Setti ngs fie ld, ch oose Vert ic al, Hor i zont al, or Dive rsit y from t he pu l l-down me nu . Step 6 In the 802.11G Power Settings, check only the channels that are used in your WLAN. By doing this, the

phone scans for on ly tho se c hanne ls. In the Max Tx Powe r f iel d, k ee p the defa ult valu e.

Step 7 In the 802.11A Power Settings, check only the channels that are used in your WLAN. By doing this, the

phone scans for on ly tho se c hanne ls. In the Max Tx Powe r f iel d, k ee p the defa ult valu e.

Caution You must check at least one channel after using “Clear All,” to enable the phone to access the WLAN.

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Configuring USB Settings

Step 8 Click Save to make the change.

Related Topics

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

• Network Profile Settings, page 4-8

• Configuring Wireles s Set tings i n a N etwor k Profi le, pa ge 4-13

• Configuring Wireless LAN Sec urity, pa ge 4-14

• Setting the Wireless Security Credentials, page 4-15

• Configuring the Pre- share d Ke y, pa ge 4-16

• Configuring IP Network Settings, page 4-25

• Configuring the Alternate TFTP Server, page 4-26

Configuring USB Settings

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

To use the U SB ca bl e fr om yo ur PC to a p hon e, you must co nfi g ure t he USB se tt ings to w or k wi th the USB port on the PC. The phone has a default USB IP address of 192.168.1.100. You can change the USB port configuratio n on t he p hon e in t h ese w ays:

• To obtain the IP address automatically, by getting an IP address from the PC that has DHCP set up.

• To use the IP ad dress an d s ubne t m ask a ssign ed i n t his a re a.

To display the US B Set ti ngs, a cce ss th e web page for t he p hon e as de sc ribed in the “

Configuration Web Page for a Phon e” sect ion on page 4-5, and then click the USB

Accessing the

SETTINGS.

To change the USB port sett ings for th e phone, fol low these steps :

Procedure

Step 1 On the pho ne w eb p ag e, c hoose the US B Setti ngs hy pe rlink. Step 2 Choose one of t he f oll owi ng opt ion s:

• Obtain IP address automatically

• Use the following IP address

Step 3 To change the st atic IP addr ess, in the I P Ad dre ss f ield, ent er a new IP ad dress that is no t a ssigne d on

the subnet.

Step 4 To change the subn et for the new IP addre ss, in the Subne t Mask fiel d, enter th e appro priate subn et

address.

Step 5 Click Save to make the change.

Related Topics

• Accessing the Phone Web Page, page 4-3

• Configuring Network Profile s, page 4-8

• Configuring Trace Settin gs, page 4-29

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• Using System Settings, page 4-36

Configuring Trace Settings

You can use the T RA CE SE TTIN GS m enu o n t he p hon e web page to co nfi gure h ow t he phon e cr eat es and saves trace fi les. Becau se trace files are stor ed in th e memo ry of the phone, you can co ntro l the number of files and the data that you want t o collect. Table 4-6 describes these configurable items.

Note When preserving trace logs, choose only the logs that need to be saved after the phone is powered off

and powered on to avoi d usi n g u p phon e me mo ry.

To display the Tra ce Sett ings, a c cess the web page f or t he p hon e as de scri bed in t he “Accessing the

Configuration Web Page for a Phon e” sect ion on page 4-5, and then click the T

To change the trace settings for the phone, follow these steps:

Procedure

Configuring Trace Settings

RACE SETTINGS.

Step 1 On the pho ne web p ag e, c lick the TRACE SETTING S menu. Step 2 In the Number of Files fie ld, choose the numbe r of trace fil es to save, from 2 to 10. Step 3 In the File Size field, choose the size of the files from 50 to 250K. Step 4 In the Remote Syslog Server section, check the box to enable a server to collect the trace files. Step 5 If you enabled the syslog server, then you must complete these fields:

• IP Address—Enter server IP address

• Port—Enter a port number (514, 1024-655 35)

Step 6 In the Module Trace Level section, check only the modules for which you want data:

• Kernel

• Configuration

• Call Control

• Network Services

• Security Subsystem

• User Interface

• Wireless LAN Driver

• Wireless LAN Ma nage r

• Audio System

• System

Step 7 In the Advanced Trace Settings section, in the Preserve Logs field, choose one of the following:

• True—Save t he t rac e logs to fl ash mem ory on t he p hon e.

• False—Save the trace logs to RAM.

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Note • When set to False, the trace logs are lost when the phone is powered off.

• When the phone is powered off, then powered back on, the Preserve Logs field is reset to False, the

Step 8 Click Save to make the change.

Table 4-6 Trace Settings Items and Descriptions

Chapter 4 Using the Cisco Unified Wireless IP Phone 7921G Web Pages

default value.

Item Description

General

Number of Files Choose the number of trace files that the phone saves, from 2-10 files. File Size Choose the File size for the trace file that is saved. The file size range

is 50K to 250K .

Remote Syslog Server

Enable Remote Syslog Set up a r emote server to store trace logs

IP Address—Enter se rver IP ad dress Port—Enter a port numb er (514, 1024 -65535 )

Module Trace Level

Kernel Operating System data Configuration Phone configuration da ta Call Control Cisco Unified Communications Manager data Network Services DHCP, TFTP, CDP data Security Subsystem Application level security data User Interface Key stroke s, soft keys, M MI d ata Wireless LA N Dr iver Channel sc anni ng and au then tic atio n Wireless LAN Manage r Channel scanning and au then ticatio n Audio System RTP, SRTP, RTCP, DSP data System F irm w ar e, u pgr ad e da ta

Advanced Trace Settings

Preserve Logs True— Sa ve t rac e l ogs aft er po w ering off th e p hon e

False—Delete trace logs

Reset Trace Setti ngs upon Reboot

You may enable debugging by configuring var ious setting s on the Trace Configuration. These options determine how trace settings are handled when you reboot:

• Yes—Default value. Settings will be reset to the default values

upon reboot.

Related Topics

• Accessing the Phone Web Page, page 4-3

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• No—Trace settings w ill not reset upo n reboot.

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