Clear-Com Tempest2400, Справочное руководство

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Network Number and Lockout Key
The
Network Number
determines the RF frequency hopping pattern for the BaseStation and its BeltStations. This is a key
operational parameter and is represented by a number between 0 and 63.
The
Lockout Key
prevents systems with the same Network Number from trying to communicate with each other and is
represented by a number between 0 and 255. Together the Network Number and Lockout Key represent over 16,000
possible combinations to minimize the possibility of inter-system interference.
The Network Numbers and Lockout Keys for Tempest Wireless BaseStations are set before leaving the factory, by
incrementing by one digit. Always adjust the Network Number and Lockout Key of Tempest BaseStations that are known to
operate in close proximity to other BaseStations as described below. Users should confirm these settings to minimize the
opportunity for “mysterious” performance issues.
Failure to set a unique Network Number and Lockout Key may result in poor system performance caused by interference
from another Tempest Wireless system using the same Network Number and Lockout Key. Because of the requirement to
pair every BeltStation to each BaseStation that it will communicate with, it is not possible to manipulate Network Numbers
and Lockout Keys to gain unauthorized access to a communication channel.
Multiple BaseStations in Close Proximity
The Network Numbers of closely located BaseStations should be offset by at least four, for maximum performance. For
example, on Base-A select Network Number “02”, on Base-B select Network Number “06”, and on Base-C select Network
Number “10.” In this manner each BaseStation Network Number is different by at least four digits. This procedure will
ensure that each system is operating properly and independently from an RF network perspective.
Also, adjust the Lockout Key on each BaseStation. All BaseStations in one facility may have the same Lockout Key if all
Network Numbers are offset by four as described above, or all may be different. Lockout keys are only differentiators for
systems using the same Network Number.
The Network Number and Lockout Key settings can be adjusted from the “Radio Configuration” section of the Tech Menu.
Press the MENU button. Press the ENT button to select “BaseStation Settings.” Rotate the Volume control to scroll and
select “Tech Menu.” Select “Radio Configuration.” Select “Network Number.” Rotate the Volume control to adjust the value
and press ENT to save.
Press MENU to escape one level and select “Lockout Key.” Adjust the value and press ENT to save. Press MENU repeatedly
to escape to the Operation screen.