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CHAPTER
6-1
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)
OL-20861-01
6
Understanding the VoIP Wireless Network
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)
environment. This chapter contains the following sections:
• Understanding the Wireless LAN, page 6-1
• Understanding WLAN Standards and Technologies, page 6-2
• Bluetooth Wireless Technology, page 6-7
• Components of the VoIP Wireless Network, page 6-8
• Security for Voice Communications in WLANs, page 6-11
• VoIP WLAN Configuration, page 6-15
• Configuring Wireless LAN, page 6-16
Note For instructions on deploying and configuring a wireless Cisco Unified IP Phone 9971, refer to the Cisco
Unified IP Phone 9971 Wireless LAN Deployment Guide at this location:
http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/9971_9951_8961/7_1_3/english/deploymen
t/guide/9971dply.pdf
Understanding the Wireless LAN
With the introduction of wireless communication, Cisco Unified IP Phones with wireless capability, such
as the Cisco Unified IP Phone 9971, can provide voice communication within the corporate WLAN. The
Cisco Unified IP Phone depends upon and interacts with wireless access points (APs) and key Cisco IP
telephony components, including Cisco Unified Communications Manager Administration, to provide
wireless voice communication. Cisco Access Points can run in standalone or unified mode. Unified
mode requires the Cisco Unified Wireless LAN Controller.
The Cisco Unified IP Phone 9971 exhibits Wi-fi capabilities which can be used 802.11a, 802.11b and
802.11g Wi-Fi.