Features and Specifications Manual
P4 – 457
Doc.
No. 8201 -
Release 1.0
July 2003
Power Failure Transfer
P-4
FEATURE
DESCRIPTION
The Power Failure Transfer feature ensures that a customer has access to
the Central Office network during a power outage. The CO/PBX tip and ring
are automatically transferred to the tip and ring of a preselected Single Line
Telephone. The Single Line Telephone can function in the system during
normal operation or can be only be used during a power failure. Each B64-
U( ) KSU provide three circuits for this feature.
SYSTEM
AVAILABILITY
Terminal Type
Single Line Telephones.
Required Components
None.
OPERATING
PROCEDURES
SERVICE
CONDITIONS
General
The Single Line Telephones that are installed must provide dialling
signals accepted by the outside exchange (Dial Pulse or Dual-Tone
Multifrequency).
Only Single Line Telephones cross-connected at the MDF can be used
for this feature.
Single Line Telephones and outside lines connected during power
failure are fixed one-to-one.
System features cannot be activated from Single Line Telephones
when Power Failure Transfer is in operation.
When power is restored to the system, Power Failure Transfer is
cancelled. Calls in progress on Power Failure Transfer lines are
disconnected.
A CO/PBX line is automatically switched to locally provided Single
Line Telephone when total system power is lost, and system battery
backup expires.
