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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-33The 7500B Data Module
21
■ COMMUNICATIONS PORT 1 AND 2 — Port 1 is used to connect the
7500B to a data terminal, computer or modem. Depending upon which
enhancement board is installed, port 2 can be used to connect automatic
calling equipment (RS-366 interface) or a data terminal equipment with a
V.35 interface.
Mounting Options
The 7500B data module can be configured as a stand-alone unit or in a
multiple-mount housing.
Color Options
The 7500B data module is available in misty cream only.
Capabilities
Using the available hardware and software options, the 7500B data module can
be configured as an asynchronous DCE or a synchronous DCE. The capabilities
of the different configurations are:
Asynchronous DCE Features
The following data features can be used with the 7500B.
■ EIA RS-232D interface
■ Circuit switched data communications. Data options can be changed and
data calls can be setup via commands from the EIA-432D interface.
■ Ability to change options without dropping a data call
■ Automatic or manual answering of incoming data calls
■ Data rates of 0.3, 1.2, 2.4, 4.8, 9.6, and 19.2 kbps
■ Asynchronous full-duplex operation
■ RS-366 Automatic Calling Unit (ACU) interface (requires Multiple
Enhancement Board)
■ Hayes AT interface support
Synchronous DCE Features
The synchronous DCE features with the Multipurpose Enhancement Board are as
follows:
■ EIA RS-232D interface
■ Circuit switched or nailed-up data communication
■ Data rates of 1.2, 2.4, 4.8, 9.6, 19.2, 56, and 64 kbps
■ Full-duplex operation at all speeds