Instruction manual
Control Unit
Station capacity is the number of stations that can be connected to the control
unit, and it equals the number of physical jacks on the line and station modules.
See “System Numbering” in this chapter
One extension number is automatically assigned to each station jack, whether or
for detailed information.
not equipment is connected to it, except for the 008 MLX and 008 OPT modules:
■ 008 MLX module has two extension numbers assigned to each physical
jack, the first for a digital/lSDN (MLX) telephone and the second for any
equipment connected to the telephone through an MFM.
■ 008 OPT module has eight physical jacks, which the system reads as 12
jacks and assigns an extension number to each.
Planning Form Instructions
Under the heading "Stations":
1. Fill in the numbers of each type of station module on the appropriate
lines.
2. Add the "Number of Modules" column and record the result by the system
totals.
3. Multiply the number of each type of module by the number of physical
jacks on it and record the results.
4. Add the "Physical Jacks by Module Type" column and fill in the "System
Totals" line to show station capacity.
5. To determine the number of extensions assigned, multiply the number of
physical jacks by module type, by the number of station extensions the
system assigns to each module's jack type.
Note: Since the system assigns an additional four extensions to each 008
OPT module, you must multiply the number of 008 OPT modules by four
and add this subtotal to the result shown in the "Physical Jacks by Module
Type" column.
6. Write the results in the "Total Station Extensions Assigned" column.
7. Add the "Total Station Extensions Assigned" column and fill in the "System
Totals" line.
Module Placement
Use the “Control Unit Diagram” on Key System Form 1 and the following
guidelines to plan where the modules an placed in the control unit:
■
■
■
Put the power supply module in the far left slot of each carrier.
Put the processor module in slot 00 of the basic carrier.
Put line and station modules in any order in slots 01 through 17, with the
following conditions:
■ Put the modules in each carrier from left to right with no empty slots
between modules. (The system does not recognize modules in slots after
an empty slot; slots to the right of the last module can be left empty.)
Modules  2-5










