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Equipment description
553-2731-100
Standard 5.00
April 2000
Supplementary power unit
Each stand-alone and some co-located ADMs must be powered from a
supplementary power unit. The supplementary power unit used is a wall or
floor-mounted plug-in transformer that supplies 24 V ac ±10%.
In the event that the local power to a co-located ADM fails, an optional Power
Failure Transfer (PFT) capability can be implemented to ensure that the SL-1
telephone continues to function. Individual and/or zone PFT can be used.
RS-232 cord assemblies (NE-25MQ2A)
The NE-25MQ2A (A0237451) cord assembly is a 16 ft (5 m), 25-wire cable,
connectorized at both ends. It provides electrical interface and proper
configuration of control signals between the ADM and Data Terminal
Equipment (DTE). A shorter 6 ft (1.8 m) NE-M25QB (A0273211) cord may
be used instead of the longer cord.
Modem pool cable (QCAD5A)
The QCAD5A connector cable (A0277406) is similar to the NE-25MQ2A
cord assembly, but includes a special relay and associated wiring to provide
the necessary electrical interface and proper configuration of operating
modes of the attached modem. This cable is only used for asynchronous
outbound modem pools.
QMT9 AIM
The Asynchronous Interface Module (AIM) is packaged in a chameleon
ash-colored plastic housing that is 12.5 in (317.5 mm) long, 7.5 in (190 mm)
wide. The module has a 4° slope with a front height of 1.75 in (44.5 mm) and
a rear height of 2.75 in (70 mm). It weighs approximately 2 lb (1 kg).
The AIM may be desktop or wall mounted and is used to originate or answer
data calls. It supports keyboard dialing.
