Cisco Systems 8961 manual Bluetooth Wireless Technology, AP, Channel, and Domain Relationships

Chapter 6 Understanding the VoIP Wireless Network

Bluetooth Wireless Technology

AP, Channel, and Domain Relationships

APs transmit and receive RF signals over channels within the 2.4 GHz or 5 GHz frequency band. To provide a stable wireless environment and reduce channel interference, you must specify non-overlapping channels for each AP. The recommended channels for 802.11b and 802.11g in North America are 1, 6, and 11.

Note In a non controller-based wireless network, it is recommended that you statically configure channels for each AP. If your wireless network uses a controller, use the Auto-RF feature with minimal voice disruption.

For more information about APs, see the “VoIP WLAN Configuration” section on page 6-15.

For more information about AP, channel and domain relationships, see Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide.

WLANs and Roaming

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). APs must register to the WDS for fast roaming to work. CCKM is also supported on the Cisco Unified Wireless LAN Controller alone.

The Cisco Unified IP Phone 9971 supports CCKM with 802.1x+WEP or WPA(TKIP) only. CCKM is not supported with WPA2 or WPA(AES). For details about CCKM, refer to the “Cisco Fast Secure Roaming Application Note” at: http://www.cisco.com/en/US/products/hw/wireless/ps4570/prod_technical_reference09186a00801c522 3.html

Related Topics

•Voice QoS in a Wireless Network, page 6-9

•VoIP WLAN Configuration, page 6-15

Bluetooth Wireless Technology

Bluetooth enables low bandwidth wireless connections within a range of 30 feet (10 meters). The best performance is in the 3-to 6-foot (1- to 2-meter) range. Bluetooth wireless technology operates in the 2.4 GHz band which is the same as the 802.11b/g band. There can be a potential interference issues. It is recommended that you:

•Use 802.11a that operates in the 5 GHz band.

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

For more information about using Bluetooth headsets with your Cisco Unified IP Phone, see the “Using Bluetooth Wireless Headsets” section on page 3-8.

Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)

OL-20861-01 6-7