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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-77The 3270 Data Module
21
The 3270 Data Module
Figure 21-23. The 3270A or 3270T Data Module
The 3270 Data Module provides a Category A coaxial DCE interface for
connection to 3270-type data terminals or a cluster controller. It also provides a
DCP interface for connection to the digital switch.
The 3270 Data Module is available in the following three models:
■ 3270T (Terminal) — Connects to a Category A 3270-type terminal, such as
the IBM 3278 Information Delivery System. The 3270T Data Module must
connect through the switch to a 3270C (Controller) Data Module.
■ 3270A (Asynchronous) — Provides the same function as the 3270T Data
Module. It also allows the 3270-type terminal to emulate a DEC VT100 or
Lucent Technologies’ asynchronous terminal.
■ 3270C (Controller) — Connects an IBM 3274 or 3276 cluster controller to
the switch. A 3270C Data Module (See Figure 21-24) can contain as many
as eight ports.
TERMINAL FAULTCOMPUTER
Originate/Disconnect Switch