Labels:text | diagram | black and white | technical drawing | plan OCR: 104 TABLE 3(%). FREQUENCY PARAMETERS INTERFACE CONTROL becomes operational as a modem and the state machines pro- This section controh the handshaking between the modem and ceod as depicted in the howcharts. Transmit Receive Frequency Frequency the local terminal, h consists primarily of delay generation coun- The definitions of the terms Full Duplex and Half Duplex used in tors, two state machines for controlling transmission and recep- these flowcharts ara depicted below (Figs. 6 and 7). "Full Duplex" Answer Tons lion, and mode control decode logic for selecting proper transmit applies to al 103/113, V.21 modos. "Hall Duplex" applies to 202 Baud Modem Rate Duplex Space Mark Space Mark Freq frequencies and transmit and receive fihers according to the and V.23, both forward and backward ch ...
