Table 6-2 Possible Bell Modem Configurations (Dedicated Line)
Communication Parameters Modem Line Conditioning Reverse Channel
300 baud
Full-duplex
2-wire
103F Unconditioned 3002 channel No
1200 baud
Half-duplex
2-wire
202T With reverse channel, up to 1200 baud on unconditioned or C2 conditioned 3002 channel. Without reverse channel, up to 1200 baud on unconditioned 3002 channel and 1200 to 1800 baud on C2 conditioned channel. Yes
1200 baud
Full-duplex
4-wire
202T Without reverse channel, up to 1200 baud on unconditioned 3002 channel and 1200 to 1800 baud on C2 conditioned channel. No