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ADJUNCT POWER
The MSP-1 Power Supply
The MSP-1 (WP92464L1) Power Supply can be used to supply local power to ISDN-T 65xx,
75xx, and 85xx series voice terminals connected to an AT&T DEFINITY Communications System
and to the DCP 7444 and 8434 voice terminals which need auxiliary power for their vacuum
fluorescent displays. The MSP-1 can also supply auxiliary power to adjunct equipment such as
the S201A and CS201A speakerphones or a 500A Headset Adapter attached to any currently
manufactured analog, DCP, or ISDN-T voice terminal equipped with an Adjunct jack.
CAUTION: The MSP-1 Power Supply can be used
only
with telecommunications equipment,
indoors, in a controlled environment.
NOTES:
One power supply will support one telephone with or without an adjunct.
The maximum loop range between the telephone and the power supply is
250 feet.
This power supply replaces the KS-22911-L1/2, 329A, and
353A DC Power Supplies and the 2012D AC Transformer.
The MSP-1 power supply has a single output of -48 volt DC, 0.4 amperes, and can operate from
either a 120 VAC 60 Hz power source (105 to 129 VAC) or a 220/230/240 50 Hz power source
(198 to 264 VAC). Input voltage selection is automatic; that is, the power supply adjusts itself for
the type of input voltage. The output capacity is 19.2 watts.
Contents of the MSP-1 Package (and Comcodes)
The MSP-1 package includes the following items: (Comcodes are provided for additional orders)
One MSP-1 power supply (Comcode: 406743419)
One 6-foot, 7-inch input power cord (Comcode: 403271117)
One 7-foot D8W cord (Comcode: 103786786)
Double-sided adhesive fastener strips for mounting the power supply on a flat vertical
surface (Comcode: 406824789)
These printed instructions.
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