AT&T MERLIN LEGEND Release 2.0 Installation Section page 250

Connecting Data Equipment
1. Connect the data terminal to the modem:
a. Using an EIA-232-D cable, connect the SERIAL connector on
the data terminal to the modem.
NOTE:
For any data terminal that has both COM1 and COM2
connectors, make sure you use the one designated for data
transmission. See the customer's system administrator if you
are not sure.
2. Make sure that the modem option settings for speed and parity are
compatible with those of the data terminal. If you are not sure, see the
customer's system administrator or the documentation packaged with
the modem and data terminal.
3. Connect the modem to the GPA:
a. Connect one end of a D4BU cord to the TEL/EQUIP jack on the
GPA.
b. Connect the other end to the modem as indicated in the
modem's documentation (usually the LINE jack).
4. Connect the GPA to the analog multiline telephone:
a. Plug one end of a D8AC cord into the VT jack on the back of the
GPA.
b. Plug the other end into the OTHER jack on the underside of the
telephone.
c. Slide the switch on the back of the GPA to Automatic or
Basic.
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Data Stations