Power Failure Options; Reserve Power - Toshiba STRATA CTX100 Installation And Maintenance Manual

Power Failure Options

In the event of a power failure, Strata CTX uses these options:

Reserve Power

For information on the Reserve Power Option, see Chapter 1 – Installation.
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 9-25 provides a circuit diagram of the DPFT.
To RSTU/PSTU-T1 J2-27
RDSU/RSTS
To RSTU/PSTU-R1
J2-2
RDSU/RSTS
J1-27
To RCOU/PCOU-T1
J1-2
To RCOU/PCOU-R1
J1-50
DG (Input)
RSTU or PSTU
Control
-24V (Input)
J1-25
Notes
• Representation of first of eight circuits.
• Conditions shown with AC power (-24VDC) off.
Figure 9-25 DPFT Circuit Diagram
Strata CTX I&M 10/02
Telephone Current
Detector
Peripheral Installation
Power Failure Options
J2-26
To TEL-T1
J2-1
To TEL-R1
J1-26
To CO-T1
J1-1
To CO-R1
Relay
1498
9-25