Power-Failure Transfer - Lucent Technologies MERLIN LEGEND Release 5.0 Feature Reference

MERLIN LEGEND Communications System Release 5.0
Feature Reference 555-650-110
Features

Power-Failure Transfer

Power-Failure Transfer
At a Glance
Modes
Telephones
Hardware
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 a
400, 400 LS/TTR, 800, 800 GS/LS, 800 GS/LS-ID, 408, 408 GS/LS, or 408
GS/LS-MLX module. Each module has one PFT jack for each series of four
line/trunk jacks; for example, the 800 and 800 GS/LS modules each have two PFT
jacks.
Considerations and Constraints
A power-failure telephone cannot be used to make or receive calls and does not
function when the system is operating normally.
System features and restrictions do not work when PFT occurs. Power-failure
telephones are not working extensions but only dedicated power-failure devices.
Telephone Differences
Multiline Telephones
Multiline telephones cannot be used as power-failure telephones.
Single-Line Telephones
Touch-tone single-line telephones must be connected to PFT line/trunk jacks for
touch-tone lines; rotary single-line telephones must be connected to PFT
line/trunk jacks for rotary-dial lines.
Feature Interactions
SMDR
All
Single-line telephones
If ground-start trunks are used in Hybrid/PBX mode,
KS23566, L1 ground-start buttons are required on
power-failure telephones
No SMDR records are generated during a power failure.
3 0
3 0
3 0
3 0
3 0
3 0
3 0
3 0
Issue 1
June 1997
Page 440