IBM 5280 User's Setup Procedures page 150

144
Note: The telephone line socket should have been connected prior to
setup. If it has not been. contact your supervisor who will notify the
person familiar with the local electrical codes and responsible for
telephone line connection.
d. Push the connector into the receiving connector and turn the
thumbscrews until tight.
Telephone Line
Socket
Connector
Connector
COT Type Data Coupler
(It is probably located on
a wall or by a telephone.)
Wh ite/Red Wire
(DT)
CBS Type Data Coupler
Coupler Wire
Terminal Color
SH Red
SG Gray
DA Yellow
CCT Brown
OH
Blue
RI Violet
DT White
DR Black
Note: The COT type or CBS data coupler should have been connected
prior to setup. If it has not been. contact your supervisor who will notify
the person familiar with the local electricai codes and responsible for
telephone line connection.
e. Notify your supervisor that you have completed setup.