Lucent Technologies MERLIN LEGEND Release 6.1 System Manager's Manual page 136

MERLIN LEGEND Communications System Release 6.1
System Manager's Guide 555-661-118
3 System Components
Power-Related Hardware
Trouble Alarm
System operator consoles have programmed Alarm buttons to let you know if
there is a problem with the system. An external bell or light can be attached to a
console to supplement the button. If this is not enough notice of a system
problem, a Lucent Technologies technician can use a loop-start line jack and an
adapter to attach a bell or strobe light to the system.
Power-Failure Alarm
A Lucent Technologies technician can use a ground-start or loop-start power-
failure transfer (PFT) telephone jack to attach an alerting device that goes off
during a power failure. You can connect a PFT telephone to this jack when the
jack is connected for a power-failure alarm.
Power-Failure DID Busy-Out
A Lucent Technologies technician may program the PFT jack on a ground-start or
module to automatically short the busy-out wire pair for a group of DID trunks
when a power failure occurs. This signals the CO that the DID trunks are out of
service.
Power-Failure Transfer Telephone
A power-failure transfer (PFT) telephone is a single-line telephone connected to a
PFT jack on a 400 (LS), 400/GS/LS, 408, 408 GS/LS, 408 GS/LS-MLX, 800, 800
GS/LS, or 800 GS/LS-ID module. If there is a power failure, the system shuts off
and the PFT telephone automatically connects to an assigned outside line for
making and receiving calls.
When your system was planned, your Lucent Technologies representative made
sure that it had a module to support one or more PFT telephones in case of an
emergency. For more information, contact your Lucent Technologies
representative.
NOTES:
1. The PFT jack does not operate unless a power outage occurs or the
2. The PFT telephone can be any basic single-line telephone; a single-
3. If rotary lines/trunks are in the system, you must use rotary telephones
power supply units are turned off.
line telephone that is connected to an MFM cannot be a PFT
telephone.
(500MMs recommended) as PFT telephones.
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Issue 1
August 1998
Page 3-49