more topics Power Failure Transfer Feature

Description

During a commercial power failure, Power-Failure Transfer (PFT) provides incoming and outgoing service through power-failure telephones. When a power failure occurs, all calls are dropped and the power-failure telephone automatically goes on. It can make and receive calls on the line/trunk connected to the first (lowest) line/trunk jack on the module where the PFT telephone is connected.

A power-failure telephone is a single-line telephone connected to a PFT jack on an 800 GS/LS-ID, 408 GS/LS-ID-MLX, or 412 LS-ID-TDL module. Each module has one PFT jack for each series of four line/trunk jacks; for example, the 800 (LS) and 800 GS/LS modules each have two PFT jacks.

Topics
	Description
	At a Glance
	Considerations & Constraints
	Telephone Differences
	Feature Interactions