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INSYS Modem 56k Small INT 2.0
6.3
Pin Assignment of the Serial Interface
Figure 3: 9-pin sub-D jack at the device
Pin
Signal
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Table 4: Description of the pin allocation of the sub-D jack
Description
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Ground
Data set ready
Request to send
Clear To Send
Ring Indication
Connections
13
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