RS-232C

CONNECTOR

INTERFACE

TELEPHONE

JACK

WALL

JACK

OPTIONAL

ORIGINATE/DISCONNECT

SWITCH

Figure 4-17. Asynchronous Data Unit (ADU)

ADU Connection Information

Detailed connection information is provided in the following figures:

Figure 4-28—Typical ADU Connections Supporting Data Terminal And Single-Line Voice Terminal

Figure 4-29—Typical ADU Connections Supporting Data Terminal And 7300H Series Multiline Voice Terminal

Figure 4-30—Typical MADU Connection

Figure 4-31—Typical Z3A1/2/4 ADU Local Power Connections.

As shown in Figure 4-31,local external power can be provided to the Z3Al, Z3A2, and Z3A4 ADUs via a 2012D power transformer and a 248B Adapter attached to a 400B2 Adapter with a D6AP-87 modular cord.

Descriptions of the Station Interconnect Panel (SIP), Trunk Access Equipment (TAE), and associated cables and adapters, as shown on the figures, are provided under the heading “Connectivity’’ later in this Section.

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AT&T AT&T manual Asynchronous Data Unit ADU ADU Connection Information