Clear-Com Tempest2400 - Manual (Page 39)

33 Tempest®24 00 2 -Channel Wireless Intercom System
Network Number and Lockout Key
The Network Number determines the RF frequency hopping patt ern for the BaseStati on and its corresponding BeltStati ons.
This is a key operati onal parameter and is represented by a number between 0 and 42.
When using multi ple collocated Tempest BaseStati ons, it is imperati ve that Network Numbers are properly coordinated.
BaseStati ons that are synchronized together using the ZSync technology must uti lize the same Network Number Group
for opti mal performance to be acheived. Up to 11 Tempest BaseStati ons can be uti lized in one Network Number Group
under ideal conditi ons (Band 1). For example, a confi gurati on using ZSync and 11 Tempest BaseStati ons would assign each
BaseStati on a Network Number (0,1,2,3...10) from the Band 1, Group 1. The chart below outlines each Network Number
Group and it’s capacity in relati on to the frequency band being used.
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. BaseStati ons that are collocated within the same installati on may have
the same Lockout Key as long as the Network Numbers are diff erent. Lockout keys serve as diff erenti ators for systems
using the same Network Number. Together, the Network Number and Lockout Key represent more than 11,000 possible
combinati ons to minimize the possibility of inter-system interference.
The Network Numbers and Lockout Keys for Tempest Wireless BaseStati ons are set to a factory default before leaving the
factory. It is always recommended to adjust the Network Number and Lockout Key upon initi al set up out of the box. 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 BeltStati on to each BaseStati on that it will communicate with, it is not possible to manipulate Network Numbers and
Lockout Keys at a BeltStati on to gain unauthorized access to a communicati on channel.
Collocated BaseStati ons must use Network Numbers from the same Network Number Group;
failure to do so can lead to poor performance.