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Unit Load Calculation
Page F-1
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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
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Unit Load Calculation
A unit load is a measure of power (1.9 watts) used to determine the electrical load
that the following components have on
each carrier’s
power supply:
■ Telephones and Adjuncts. Only the telephones and adjuncts that connect
to the analog and digital ports on the control unit require unit load
calculation. Do not include any equipment with its own power supply in the
unit load calculation.
■ Direct Inward Dial (DID) modules
Unit load and power requirements for a new system are computed automatically
when the equipment for the system is initially ordered. These calculations are
based on the assumption that each module is fully utilized, that is, all jacks are
used.
It may be useful to obtain more accurate calculations, for example, if the modules
are not fully utilized, if there is a change in the equipment, or if you suspect that a
particular carrier has more unit loads than the power supply can handle. You can
calculate the actual unit load using the worksheet and instructions in this
appendix.