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Adjunct Power
4-1
4
DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
4
Adjunct Power
Power for several of the adjuncts must be provided locally at the voice terminal or
from a satellite closet through the terminal wiring. The following power supplies
are currently recommended:
■ The 1151A1 Power Unit and the 1151A2 Power Unit with Battery Holdover
have replaced the MSP-1 (WP92464L1) Power Supply, the KS-22911 L1/2,
329A, and 353A DC power supplies, and the 2012D AC transformer. The
1151A1 and 1151A2 with Battery Holdover can be used to supply local
power to ISDN-T 65xx, 75xx, and 85xx series voice terminals connected to
a DEFINITY Communications System Generic 1, Generic 2, Generic 3, a
DEFINITY ECS, and the DCP 7444 and 8434/8434DX voice terminals
which need auxiliary power for their vacuum fluorescent displays. You will
also need auxiliary power if you are using a 6400 Series telephone or an
8411 voice terminal or if you have a ZE801A or an XM24 expansion
module connected to your voice terminal or telephone. These power units
can also supply auxiliary power to adjunct equipment such as the S201A,
CS201A, or SoundPoint speakerphones or a 500A1 Headset Adapter
attached to any currently manufactured analog, DCP, or ISDN-T voice
terminal equipped with an Adjunct jack. For more information on the MSP-1
and the newer 1151A1 and 1151A2 power supplies, see the short section
with connection diagrams later in this section.
■ The ISDN 1145B1 Bulk Power Unit, 1146B Power Distribution Unit, and the
2.5/5.0 A.H. back-up batteries provide an uninterruptible power source for
ISDN telephones and terminals, NT1s, terminal adjuncts, and other
customer premises equipment. During AC power interruptions, batteries
are automatically switched on to provide continuous power to the load.