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WLAN Capability Overview

The Cisco IP Phone 6861 Multiplatform Phones extend collaboration to wireless network with 802.11 implementation.

You can use the Cisco Unified Communication applications on the phone with either wired or wireless network.

With an enhancement on QoS control, the implementation of 802.11 permits time-sensitive applications, such as voice, to

operate efficiently over wireless LAN (WLAN) deployment. These extensions provide bandwidth allocation ahead of a

service if the AP supports it too, which guarantees the efficiency and good experience of communication for traffic over

the air.

Since WLAN uses unlicensed spectrum, it may experience interference from other devices using the unlicensed spectrum.

The proliferation of devices in the 2.4 GHz spectrum, such as Bluetooth headsets, Microwave ovens, and cordless

consumer phones, means that the 2.4 GHz spectrum may contain more congestion than other spectrums. The 5 GHz

spectrum has far fewer devices operating in this spectrum and is the preferred spectrum to operate the phone in order to

take advantage of the 802.11a/n data rates available.

Despite the optimizations that Cisco has implemented in Cisco IP Phone 6861 Multiplatform Phones, we can't guarantee

uninterrupted communication in using the unlicensed spectrum, and there may be the possibility of voice gaps of up to

several seconds during conversations. Adherence to these deployment guidelines will reduce the likelihood of these voice

gaps being present, but there is always the possibility.

Through the use of unlicensed spectrum, and the inability to guarantee the delivery of messages to a WLAN device, the

Cisco IP Phone 6861 Multiplatform Phone is not intended to be used as a medical device and should not be used to make

clinical decisions.

Supported Frequencies and Channels

The following table lists the frequencies and channels that Cisco IP Phone 6861 Multiplatform Phones support.

Part Number

CP-6861-3PW-CE-K9=

CP-6861-3PW-NA-K9=

CP-6861-3PW-UK-K9=

CP-6861-3PW-AU-K9=

Requirements

Before deploying your phone, ensure that the requirements for the site and WLAN network are met.

Site Requirements

Before deploying the phone into a production environment, the site WLAN network deployment must be properly

configured to accommodate more devices. Typically, there is less interference in the 5 GHz band and more non-

overlapping channels, so 5 GHz is the preferred band for operation and even more highly recommended when the phone is

to be used in a mission-critical environment.

The wireless LAN must be validated to ensure it meets the requirements to deploy the phone.

Signal

The signal coverage should be no lower than -67 dBm to ensure that the phone always has adequate signal.

Channel Utilization

Channel Utilization levels should be kept under 40%.

The phone converts the 0-255 scale value to a percentage, so 105 would equate to around 40% on the phone.

Description

Peak Antenna Gain

Cisco MPP

2.412-2.472GHz: 2.44 dBi

Phone 6861

5.150-5.350GHz: 0.53 dBi

5.470-5.725GHz: 0.7 dBi

Cisco IP Phone 6861 Multiplatform Phones Wireless LAN Deployment Guide

Frequency Ranges

Available

Channels

2.412 - 2.472 GHz

5.180 - 5.240 GHz

5.260 - 5.320 GHz

5.500 - 5.700 GHz

5.745 - 5.825 GHz

Channel Set

1-13

36,40,44,48

52,56,60,64

100-144

149,153,157,161,165