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Modifications
Adding to the System
Step 1
Step 2
Step 3
Step 4
5-2 Adding to the System
Adding to the system is defined as increasing its capacity or capability. This
increase may mean adding more or different kinds of trunks, connecting
auxiliary equipment, or installing more stations (telephones, consoles or tip/ring
equipment).
Determine the specific type of trunk, auxiliary equipment, or station to be added.
Use Table 5-1, shown on the opposite page, to determine the type of trunk
and/or station module needed to support what you plan to add.
Locate PBX System Form 1, System Planning. Review the completed "Control
Unit Diagram' on the back of the form and determine if the module type needed
is present.
If the module is not in the control unit, continue to step 4.
If the module type needed is already in the control unit, continue to step 3.
Determine if there are jacks available on the module for the new trunk, auxiliary
equipment, or station. Use PBX System Form 2a, System Numbering —
Station Jacks, or PBX System Form 2c, System Numbering — Trunk Jacks,
to identify jack availability.
If there are sufficient jacks available on an existing module, plan to connect
the added trunk, equipment, or station to them. Continue to step 5.
If there aren't jacks available, continue to step 4.
Plan the placement of the new module required to support the trunk, auxiliary
equipment or station. Review the guidelines that follow and decide where the
new module should be placed.
The power supply module must be placed in the far left slot of each carrier.
The processor module must be installed in slot O of the basic carrier.
Trunk and/or station modules can be placed in any order in slots 1 through
17 (with two expansion carriers), with the following conditions:
Install the modules in each carrier from left to right with no empty slots
between modules.
If the system includes a queued call console, the 008 MLX module that
supports it must be the first station module in the control unit.
Place all 012 and 008 OPT modules in the same carrier whenever
possible.
Group all 800 DID, 100D, and tie modules together whenever possible.
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