CHAPTER 3
VoIP Wireless Network Setup for Cisco Unified
IP Phone 9971
•
VoIP Wireless Network Overview, page 43
•
VoIP Wireless Network Components, page 43
•
802.11 Standards for WLAN Communications, page 50
VoIP Wireless Network Overview
This chapter provides an overview of the interaction between a wireless-capable Cisco Unified IP Phone 9971
and other key components of a VoIP network in a wireless local area network (WLAN) corporate environment.
When you deploy a Cisco Unified IP Phone on a wireless LAN, you must use Cisco Unified Communications
Manager Release 7.1(3) or later and the SIP protocol.
Some networks contain wired components that support wireless components. The wired components include
switches, routers, and bridges with special modules to enable wireless capability.
The Cisco Unified IP Phone 9971 supports Cisco Centralized Key Management (CCKM), a centralized key
management protocol, and provides a cache of session credentials on the wireless domain server (WDS) with
802.1x+WEP or WPA(TKIP) only. APs must register to the WDS for fast roaming to work. CCKM is also
supported on the Cisco Unified Wireless LAN Controller alone. CCKM is not supported with WPA2 or
WPA(AES). For details about CCKM, see the Cisco Fast Secure Roaming Application Note at: http://
www.cisco.com/en/US/products/hw/wireless/ps4570/prod_technical_reference09186a00801c5223.html.
For instructions on deploying and configuring a wireless Cisco Unified IP Phone 9971, see the Cisco Unified
IP Phone 9971 Wireless LAN Deployment Guide at this location: http://www.cisco.com/en/US/products/
ps10453/products_implementation_design_guides_list.html.
For more information about Cisco Unified Wireless Networks, see http://www.cisco.com/en/US/products/
hw/wireless/index.html.
VoIP Wireless Network Components
The Cisco Unified IP Phone 9971 depends upon and interacts with wireless access points (AP) that have the
correct QoS and key Cisco IP telephony components, including Cisco Unified Communications Manager
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
43
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