Power Failure Options - Toshiba Strata DK14 Installation And Maintenance Manual

Peripheral Installation
This chapter provides connection procedures for optional peripheral equipment to Strata DK
Systems. Information in this chapter applies to all systems, unless stated otherwise in text.
Instructions include hardware requirements, PCB configuration, interconnection/wiring
requirements, and programming considerations. Peripheral equipment is connected to system
PCBs. See Chapter 7 – DK40i/DK424 Universal Slot PCBs installation and configuration
information and the appropriate installation section.

Power Failure Options

In the event of a power failure, Strata DK uses these options:
Reserve Power
For information on the Reserve Power Option, see:
Chapter 1 – DK14 Installation
Chapter 3 – DK40i Installation
Chapter 5 – DK424 Installation
DK14/DK40i Single-line Power Failure Emergency Transfer
DK14 and DK40i have a built-in single-line Power Failure Emergency Transfer (requires loop
start lines). See Chapter 1 – DK14 Installation and Chapter 3 – DK40i Installation for detailed
information.
DK40i/DK424 Power Failure Transfer Unit
An optional Power Failure Transfer Unit (DPFT) can be installed that automatically connects up to
eight selected CO lines directly to designated standard telephones in the event of a power failure.
The DPFT enables normal operation of the selected CO lines and standard telephones when the
system is in service. When power is restored, each telephone is independently reconnected to
system standard telephone circuit ports after it is finished with its direct CO line call. The DPFT is
normally installed on the MDF.
Figure 10-1 provides a circuit diagram of the DPFT.
Strata DK I&M 5/99
10
10-1