Lucent Technologies 5 manual Trouble Alarm, Power-Failure Alarm, Power-Failure did Busy-Out

MERLIN LEGEND Communications System Release 5.0	Issue 1
System Manager’s Guide 555-650-118	June 1997
3 System Components
Power-Related Hardware	Page 3-48
Trouble Alarm	3

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 a UPAM to attach a bell or strobe light to the system.

Power-Failure Alarm 3

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 3

A Lucent Technologies technician may program the PFT jack on a ground-start or module to automatically short the busy-outwire 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 3

Apower-failure transfer (PFT) telephone is a single-line telephone connected to a PFT jack on a 400, 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.