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MERLIN LEGEND Communications System Release 5.0
System Manager’s Guide
555-650-118
Issue 1
June 1997
About the System
Page 2-27Auxiliary Components
2
— Protection Accessories. For example, for grounding and protecting
special telephone connections (like a telephone located in a different
building) from lightning strikes and power surges.
— Miscellaneous Accessories. A power-failure transfer (PFT) telephone
used to make and receive calls in the event of a commercial power
failure or an Off-Premises Range Extender (OPRE) used for a
single-line telephone located in a different building from the control unit
and more than 1000 feet away.
Figure 2–10
illustrates some of these components. For information about these
accessories, see Chapter 3, ‘‘
System Components’’ and the
Equipment and
Operations Reference
(not updated since Release 3.0).