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7400A Data Module
NEXT/NO, BACK, and ENTER/YES buttons
These buttons are used to view and set data communication options and functions, adjust the
contrast of the display, and to conduct tests.
Jacks
The 7400A data module is equipped with the following jacks.
PORT 1 (EIA RS-232-C or -D)
PHONE (not used)
LINE (to switch) (RJ-45)
POWER
Mounting Options
The 7400A data module can be configured as a stand-alone unit or in a multiple-mount housing.
(The multiple-mount housing must be used if D-lead modems are used in the modem pool. The
multiple-mount can also be used to support Hayes-compatible modems.)
Color Options
The 7400A data module is available in misty cream only.
Tests
The 7400A data module supports the following test and maintenance features:
Self-test
Local loopback and remote loopback
Local Loop self test and remote loop self test
DCP looparound
Maintenance activate
Make busy
Manual on-hook/off-hook
5-6