AT&T MERLIN LEGEND Communications System PBX System Planning Manual page 34

Control Unit
Trunk and Station Capacity
See "System Numbering" in this chapter
for detailed information.
The numbers of jacks in Table 2-1 are the physical jacks on each module. In
most cases, the number of physical jacks indicates capacity (the number of
trunks and/or stations that can be connected to the module). The exception is
the 100D module, with one physical jack, which because of the system's
software capabilities supports
Use the AT&T Equipment List (supplied with your system) to complete page
1 of PBX System Form 1, System Planning.
Planning Form Instructions
Under the section "Size of Processor Module," check the box describing the
size of the processor module (small or large).
Under the "Trunks" headin in the "Capacity" section:
Fill in the number of each type of trunk module on the appropriate line.
1 .
Add the column and record the result next to the system totals.
2 .
Multiply the number of each type of module by the number of trunks it
3 .
supports. Write the results in the "Total Trunks by Module Type" column.
Add the column and record the total tyrunk capacity of the system.
4 .
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 trunk and station
modules.
One extension number is automatically assigned to each station jack, whether or
not equipment is connected to it, except for the 008 Ml-)( 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 column and record the result by System Totals.
3.
Multiply the number of each type of module by the number of physical
jacks on it and record the results.
Add the column and fill in the "System Totals" line to show station
4.
capacity.
24 trunks.
Modules 2-5