Adding To The System - AT&T MERLIN LEGEND Key System Planning

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 lines, connecting auxiliary
equipment, or installing more stations (telephones, consoles or tip/ring
equipment).
Determine the specific type of line, auxiliary equipment, or station to be added.
Use Table 5-1 to determine the type of line and/or station module needed to
support what you plan to add.
Locate Key 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, skip 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 line, auxiliary
equipment, or station. Use Key System Form 2a, System Numbering —
Station Jacks, or Key System Form 2c, System Numbering — Line Jacks, to
identify jack availability.
If there are sufficient jacks available on an existing module, plan to connect
the added line, equipment, or station to them. Skip to step 5.
If there aren't jacks available, continue to step 4.
Plan the placement of the new module required to support the line, 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 0 of the basic carrier.
Line 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.
Place all 012 and 008 OPT modules in the same carrier whenever
possible.
Group all 100D and tie modules together whenever possible.