
3.7 Understanding The Board Configuration
Physical vs.
Logical board
location
The FXT uses two distinctions for station and line locations: the physical location and the logical
location.
The physical location corresponds to the order of the universal slots in the system; these physical
slot locations never change. There are a possible six physical slot locations in the system, and no
matter what board you install in the first universal slot, that slot is always physical slot one. The
physical slot numbers begin with the first, or bottom, universal slot and move upward from
UNV1 through UNV6. Installers need to know the physical location of the boards in order to
properly wire the lines and stations.
The logical location of a station or a line corresponds to its relationship to the other stations or
lines in the system and is not dependent upon the board’s location in the cabinet. Therefore, if
you have installed your first station board into the fifth slot, for example, the system still refers to
the first station on that board as logical station one (station one always defaults with intercom
1001).
How
automatic
configuration
works
Because there are no dedicated station or line ports, the system uses an automatic configuration
method to number the lines and stations. When you master clear the system, it automatically
searches for all installed line and station boards in the main and expansion cabinets. Once the
system has identified the board type and location, it automatically numbers the ports on every
installed board (see the section below, “How the system renumbers logical ports,” for more
information on renumbering).
General Description 3 – 7
General Description GCA40–215
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