For more information, refer to the Cisco IP Conference Phone 8832 User Guide at this URL: https://www.cisco.com/c/en/us/support/collaboration-endpoints/unified-ip-phone-8800-series/products-user-guide-list.html

Accessories

The following accessories are available for the Cisco IP Conference Phone 8832.

• Cisco IP Conference Phone 8832 Wired Microphone Kit

• Cisco IP Conference Phone 8832 Wireless Microphone Kits

Wireless LAN Design

The following network design guidelines must be followed in order to accommodate for adequate coverage, call capacity and seamless roaming for the Cisco IP Conference Phone 8832.

802.11 Network

Use the following guidelines to assist with deploying and configuring the wireless LAN.

5 GHz (802.11a/n/ac)

5 GHz is the recommended frequency band to utilize for operation of the Cisco IP Conference Phone 8832.

In general, it is recommended for access points to utilize automatic channel selection instead of manually assigning channels to access points.

If there is an intermittent interferer, then the access point or access points serving that area may need to have a channel statically assigned.

The Cisco IP Conference Phone 8832 supports Dynamic Frequency Selection (DFS) and Transmit Power Control (TPC) from

802.11h, which are required when using channels operating at 5.260 - 5.720 GHz, which are 16 of the 25 possible channels.

Need to ensure there is at least 20 percent overlap with adjacent channels when deploying the Cisco IP Conference Phone 8832 in an 802.11a/n/ac environment, which allows for seamless roaming. For critical areas, it is recommended to increase the overlap (30% or more) to ensure that there can be at least 2 access points available with -67 dBm or better, while the Cisco IP

Conference Phone 8832 also meets the access point’s receiver sensitivity (required signal level for the current data rate).

Cisco IP Conference Phone 8832 Wireless LAN Deployment Guide

20

Dynamic Frequency Selection (DFS)

DFS dynamically instructs a transmitter to switch to another channel whenever radar signal is detected. If the access point detects radar, the radio on the access point goes on hold for at least 60 seconds while the access point passively scans for another usable channel.

TPC allows the client and access point to exchange information, so that the client can dynamically adjust the transmit power.

The client uses only enough energy to maintain association to the access point at a given data rate. As a result, the client contributes less to adjacent cell interference, which allows for more densely deployed, high-performance wireless LANs.

If there are repeated radar events detected by the access point (just or falsely), determine if the radar signals are impacting a single channel (narrowband) or multiple channels (wideband), then potentially disable use of that channel or channels in the wireless LAN.

The presence of an access point on a non-DFS channel can help minimize voice interruptions.

In case of radar activity, have at least one access point per area that uses a non-DFS channel (UNII-1). This ensures that a channel is available when an access point’s radio is in its hold-off period while scanning for a new usable channel.

A UNII-3 channel (5.745 - 5.825 GHz) can optionally be used if available.

Below is a sample 5 GHz wireless LAN deployment.

Cisco IP Conference Phone 8832 Wireless LAN Deployment Guide

21