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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.
4
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
13
5.180 - 5.240 GHz
4
5.260 - 5.320 GHz
4
5.500 - 5.700 GHz
11
5.745 - 5.825 GHz
5
Channel Set
1-13
36,40,44,48
52,56,60,64
100-144
149,153,157,161,165