2.12.1
Making Modular Jack Data Connections
Modular jack connections are wiring connections from a station to a modular (wall) jack.
The system provides two serial data ports on the J0408:
•
Connect a video display terminal (VDT), Tracker, or VoiceMail to COM 1.
•
Connect a serial data printer or Caller ID to COM 2.
The system provides four serial data ports on the J0816 and J1632:
•
Connect a video display terminal (VDT) to COM 1.
•
Connect a serial data printer or Caller ID to COM 2.
•
Connect VoiceMail to COM 3.
•
Connect Tracker to COM4.
NOTE: The distance between a data device and the common equipment can be up to 500 feet
in a quiet electrical environment. Some sites may require shielded cable for long
runs. For longer distances, you must install limited distance modems to relay the data
communications between the common equipment and a data device.
When preparing a cable for connection to a data device, refer to the manufacturer’s manual for
the equipment being interfaced and make the following wiring connections:
•
Wire the common equipment RD (data from device to common equipment) connection to
the device TD (transmit data) connection.
•
Wire the common equipment TD (data to device from common equipment) connection to
the device RD (receive data) connection.
•
Wire the common equipment SG (signal ground) connection to the device SG (signal
ground) connection.
•
If required for proper operation, wire the common equipment CTS (clear-to-send status
from device to common equipment) connection to the device RTS (request-to-send)
connection.
NOTE: The common equipment requires a positive voltage, with respect to signal ground, in
order to send data.
TAB001 – page 3
DSU II Digital Telephone System
IMI66–132
Installing The DSU II Digital Telephone System 2 – 34A
Summary of Contents for DSU II
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