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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Modifications
Page 6-4Adding to the System
6
2. On Form 1 (page 2), System Planning, review the completed Control Unit
Diagram and determine whether the module type needed is present. Do
one of the following:
■ If the module is not in the control unit, skip to Step 4.
■ If the module type needed is already in the control unit, proceed to
Step 3.
3. Determine whether there are jacks available on the module for the new
line/trunk, auxiliary equipment, or telephone by referring to Form 2a,
System Numbering: Extension Jacks, or Form 2c, System Numbering:
Line/Trunk Jacks. Do one of the following:
■ If there are sufficient jacks available on an existing module, plan to
connect the added line/trunk, equipment or telephone to them. Skip
to Step 6.
■ If no jacks are available, proceed to Step 4.
4. Plan the placement of the new module required to support the line/trunk,
auxiliary equipment, or telephone by reviewing the guidelines that follow
and deciding 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/trunk and/or extension 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 QCC, the 008 MLX module that
supports it must be the first extension module in the control
unit.
— Place all older 008 OPT modules (Apparatus Codes
517A28–517C28) and 012 T/R modules (Apparatus Codes
from 517C13–517F13) in carriers with ring generators
installed in the power supply module. Current versions of
008 OPT modules (Apparatus Code 517D28), 012 T/R
modules [Apparatus Code 517G13(28)], and 016 T/R
modules (Apparatus Code 517A34) have built-in ring
generators and can be mixed in carriers with the older
modules that already have a generator in place.