Sharp ER-A470

2. Connection between the terminal and
MODEM
SD : TRANSMITTED DATA
RD : RECEIVED DATA
DTR : DATA TERMINAL READY
DSR: DATA SET READY
RTS : REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS : CLEAR TO SEND
CI : CALLING INDICATOR
FG : FRAME GROUND
SD SD
RD
SG
RD
3
2
4
6
7
1
8
5
2
3
20
6
4
8
5
7
RTS
DCD
DTR
DSR
CTS
CI
22 9
SG
RTS
DCD
DTR
DSR
CTS
CI
FG 1
FRAME GROUND is connected
to the shield of the cable.
MODEM TERMINAL
25PIN D-SUB 9PIN D-SUB
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