iii
Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified Communications Manager Release 7.0
OL-15985-01
C O N T E N T S
Preface
xi
Overview
xi
Audience
xi
Organization
xi
Related Documentaton
xii
Obtaining Documentation and Submitting a Service Request
xiii
Cisco Product Security Overview
xiii
Document Conventions
xiv
C H A P T E R
1
Overview of the Cisco Unified Wireless IP Phone 7921G
1-1
Understanding the Cisco Unified Wireless IP Phone 7921G
1-1
Features Supported on the Cisco Unified Wireless IP Phone 7921G
1-4
Feature Overview
1-5
Configuring Telephony Features
1-5
Configuring Network Access for the Phone
1-5
Providing Users with Feature Information
1-6
Understanding Security Features for Cisco Unified IP Phones
1-7
Overview of Supported Security Features
1-8
Understanding Security Profiles
1-10
Identifying Encrypted and Authenticated Phone Calls
1-11
Security Restrictions
1-11
Overview of Configuring and Installing the Cisco Unified Wireless IP Phone 7921G
1-11
Configuring the Cisco Unified Wireless IP Phone 7921G in Cisco Unified Communications
Manager
1-12
Installing the Cisco Unified Wireless IP Phone 7921G
1-12
C H A P T E R
2
Overview of the VoIP Wireless Network
2-1
Understanding the Wireless LAN
2-1
Understanding WLAN Standards and Technologies
2-3
802.11 Standards for WLAN Communications
2-3
Radio Frequency Ranges
2-3
Wireless Modulation Technologies
2-4
AP, Channel, and Domain Relationships
2-4
WLANs and Roaming
2-6