Asynchronous Data Unit (ADU)

Jacks

Originate/Disconnect

The Z3A1/2/4 are equipped with a jack used to connect the optional Originate/Disconnect switch.

Telephone

The Z3A1/2/4 are equipped with modular jack to connect the optional analog telephone.

Data and RS-232 connections.

Refer to the following table for the different data and RS-232 connections.

ADU MODEL

Z3A1

Z3A2

Z3A3

Z3A4

CONNECTOR TO RS-232

25-pin plug on

3-foot cable

25-pin plug (no cable)

110-type patch cord

25-pin receptacle on

3-foot cable

DATA CONNECTOR

Modular

Modular

110-type patch cord

Modular

Power

Under certain conditions the ADU is powered by the attached RS-232 equipment. When the power provided by the RS-232 is inadequate (±7 volts are required on pins 20 and 2), an external power transformer, adapter, and patch cord are required.

Z3A Data Module Price Element Codes (PECs)

The Z3A Data Module and optional components can be ordered with the following PECs:

Z3A1 Asynchronous Data Module—2169-001

Z3A2 Asynchronous Data Module—2169-002

Z3A3 Asynchronous Data Module—2169-003

Z3A4 Asynchronous Data Module—2169-004

Originate/Disconnect Switch—21692

ADM Mounting Trough—21693

5-88

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AT&T System 85 manual Z3A Data Module Price Element Codes PECs, Jacks