Data Rates; Channels; Ieee 802.11 Specifications - Avaya AP-3 User Manual

Introduction

Data Rates

An 802.11a or 802.11b/g AP operates at faster data rates than the 802.11b AP. 802.11a and
802.11g products operate at speeds of up to 54 Mbits/sec; 802.11b products operate at speeds
of up to 11 Mbits/sec.

Channels

All Access Points in the same vicinity should use a unique, independent Channel. By
●
default, the AP automatically scans for available Channels during boot-up but you can also
set the Channel manually (see
Access Points that use the same Channel should be installed as far away from each other
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as possible to reduce potential interference.

IEEE 802.11 Specifications

In 1997, the Institute of Electrical and Electronics Engineers (IEEE) adopted the 802.11
standard for wireless devices operating in the 2.4 GHz frequency band. This standard includes
provisions for three radio technologies: direct sequence spread spectrum, frequency hopping
spread spectrum, and infrared. Devices that comply with the 802.11 standard operate at a data
rate of either 1 or 2 Megabits per second (Mbits/sec).
802.11b
In 1999, the IEEE modified the 802.11 standard to support direct sequence devices that can
operate at speeds of up to 11 Mbits/sec. The IEEE ratified this standard as 802.11b. 802.11b
devices are backwards compatible with 2.4 GHz 802.11 direct sequence devices (that operate
at 1 or 2 Mbits/sec). Available Frequency Channels vary by regulatory domain and/or country.
See 802.11b Channel Frequencies
802.11a
Also in 1999, the IEEE modified the 802.11 standard to support devices operating in the 5 GHz
frequency band. This standard is referred to as 802.11a. 802.11a devices are not compatible
with 2.4 GHz 802.11 or 802.11b devices. 802.11a radios use a radio technology called
Orthogonal Frequency Division Multiplexing (OFDM) to achieve data rates of up to 54 Mbits/
sec. Available Frequency Channels vary by regulatory domain and/or country. See
Channel Frequencies
22 Wireless AP-3 User's Guide
Interface Configuration
on page 319 for details.
on page 317 for details.
on page 72 for details).
802.11a