Instruction manual

HARDWARE AND SOFTWARE DETERMINATION

Data Modules

Data modules are communications devices that provide an interface between the digital switch,

Data Terminal Equipment (DTE), and Data Communications Equipment (DCE). Data modules

transmit and receive data, converting between the system’s Digital Communications Protocol

(DCP) and the following interfaces: EIA-232C, RS-366, RS-449, V.35, and a Category A coaxial

interface.

Figure 2 shows some of the ways modules can be connected in a Local Data Endpoint configura-

tion. Figure 3 shows some of the ways modules can be connected in a Remote Data Endpoint

configuration.

To protect existing investments, in-place equipment that performs the same function as DEFIN-

ITY Generic 1 or Generic 3 data modules may be used.

The following system data modules are covered:

Digital Terminal Data Module (DTDM)

Z702AL1-DSU Data Module Base

Modular Trunk Data Module (MTDM)

Modular Processor Data Module (MPDM)

7400A Data Module

7400B Data Module

7500B Data Module

3270 Data Module

Z3A Asynchronous Data Unit (ADU)

Pooled Modem

Digital Terminal Data Module (DTDM)

The DTDM provides synchronous or asynchronous voice and data communications to 7403D and

7405D digital voice terminal users who have a terminal or personal computer. The DTDM and

voice terminal integrate data and voice into the DCP for the switch.

Z702AL1-DSU Data Module Base

The Z702AL1-DSU Data Module Base provides the DCE interface connection between a 7407D

voice terminal and data terminals. The module provides full-duplex asynchronous operation only.

The module and 7407D voice terminal integrate data and voice into the DCP for the switch.