Lucent Technologies 5 manual June

MERLIN LEGEND Communications System Release 5.0	Issue 1
System Manager’s Guide 555-650-118	June 1997
2 About the System
Auxiliary Components	Page 2-27

—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).