User's Manual

Chapter 4 - Operation and Administration
BreezeACCESSS VL System Manual
4-40
Air Interface Parameters
The Air Interface Parameters menu enables viewing the current Air
Interface parameters defined for the unit and configuring new values for
each of the relevant parameters.
Country Code and Sub Bands
Each country has its own regulations regarding operation modes and
parameters such as allowable frequencies and bandwidth, the need to
employ an automatic mechanism for detection and avoidance of
frequencies used by radar systems, maximum transmit power at each of
the supported modulation levels and the ability to use burst
transmissions. To efficiently manage these country dependent
parameters, each unit has a ‘Country Code’ parameter and a set of
accompanying parameters, which depend on this country code. Where
more than one set of parameters can be used, the available sets are
defined as Sub Bands, selectable through the Frequency configuration
menu.
ESSID Parameters
The ESSID (Extended Service Set ID) is a string used to identify a
wireless network and to prevent the unintentional merging of two
wireless networks or two sectors in the same network. Typically, a
different ESSID is defined for each AU. To facilitate easy addition of SUs
to an existing network without a prior knowledge of which specific AU
will serve it, and to support the Best AU feature, a secondary "global"
ESSID, namely "Operator ESSID", can be configured in the AU. If the
Operator ESSID Option is enabled at the AU, the Beacon frames
transmitted by it will include both the ESSID and Operator ESSID. The
SU shall regard such frames if either the ESSID or the Operator ESSID
matches it own ESSID. The ESSID of the AU with which the SU is
eventually associated is defined as the Run-Time ESSID of the SU.
Typically, the initial ESSID of the SU is configured to the value of the
Operator ESSID. Once the SU has become associated with a specific
AU, its ESSID can be reconfigured to the value of the ESSID of the AU.
ESSID
The ESSID parameter defines the ESSID of the unit.
Valid values: A string of up to 31 printable ASCII characters.
The default value is ESSID1.