3274 Model 51C with a 1200-BPS Integrated Modem
Attached to a Switched Line with Manual Answer
( U. S. and Canada Only)
D
Plug the four-prong plug attached to the communication cable marked SWITCHED
into the four-pin receptacle connected to the data coupler.
Label-SWITCHED
3274 Model 51 C
To Data Coupler
F-12
i
)
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