Control Unit - AT&T MERLIN LEGEND Communications System PBX System Planning Manual

Control Unit

Notes:
100D module is assigned 24 logical IDs even though the module has
Each
only
one physical trunk jack.
The 008 OPT module is assigned 12 logical
only
eight physical station jacks.
Power failure transfer (PFT) jacks are not assigned logical IDs.
Planning Form Instructions
Mark the module placement on the "Control Unit Diagram" on the back of
Form 1.
1 .
Write the type of module to be installed at the top of each slot. Use the
labels listed in Tabvle 2-1 (008 MLX, 408, etc.).
2 .
Write the type of jack (S=station, T=trunk) and the associated logical ID
for each trunk and station jack on each module.
Note:
The "Unit Load" block above the diagram are reserved for occasions
when equipment changes or maintenance require the installation
technician to manually compute the values. See System Reference for
details on computing unit loads.
Logical ID labels for each trunk and station jack are provided with the system.
When the control unit is assembled, the labels are attached to the modules.
Figure 2-2 shows a completed 'Control Unit Diagram" for a system with a large
processor module with 32 trunks and 52 stations.
IDs even though the module has
Modules 2-7