Section III. OPERATION UNDER USUAL CONDITIONS
2-6. TYPES OF OPERATION
The modem is always used as part of a communication system.
Type of operation is controlled by the system installation used.
The modem can be used for local or remote operation.
One-way reversible or duplex types of operation can be performed
to transmit and/or receive the following signals:
fsk (850 Hz)
fsk (85 Hz)
nsk diversity (85 Hz diversity)
nsk plus voice (85 Hz + voice)
ONE-WAY REVERSIBLE: use to receive or transmit.
DUPLEX: use to receive and transmit at the same time.
PONY CIRCUIT: use to receive or transmit between local and remote.
2-7. PREPARATION FOR USE
Pull down hinged cover at the top left side of the modem front panel,
to locate additional controls and switches needed to operate the modem.