Bell 5902 - Two Wire Mode; Figure 5: Two Wire Network

5902 Bell 202 Modem Hardware Manual
October 19, 2007
13
4.3.2 Two wire mode
Two wire operation uses one pair of wires for transmitting and receiving data. The field wiring
connects to the +Tx/Rx and –Tx/Rx terminals.
Figure 5: Two Wire Network shows a typical 2 wire network. Figure 7: Two Wire RJ-45
Connection and Figure 9: Two Wire Terminal Block Connection give wiring details.
+TX
–TX
–RX
+RX
+TX
–TX
–RX
+RX
+TX
–TX
–RX
+RX
+TX
–TX
–RX
+RX
MASTER
SLAVE
SLAVE
SLAVE
Figure 4: Four Wire Network
--Tx/Rx
+Tx/Rx
--Tx/Rx
+Tx/Rx
--Tx/Rx
+Tx/Rx
--Tx/Rx
+Tx/Rx
MASTER
SLAVE
SLAVE
SLAVE
Figure 5: Two Wire Network