MERLIN LEGEND Communications System Release 6.1
Feature Reference
555-661-110
Issue 1
August 1998
Features
Page 488Power-Failure Transfer
Power-Failure Transfer 31
At a Glance 31
Description 31
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 31
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 31
Multiline Telephones 31
Multiline telephones cannot be used as power-failure telephones.
Single-Line Telephones 31
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 31
Modes All
Telephones Single-line telephones
Hardware If ground-start trunks are used in Hybrid/PBX mode,
KS23566, L1 ground-start buttons are required on power-
failure telephones.
SMDR No SMDR records are generated during a power failure.
To Next Page
Loading...
Need help?
General
