LEDS, CONNECTORS, AND SPECIFICATIONS
MultiModem
®
iCell MTCMR User Guide
37
RS-232 9-Pin Female Connector
Pin
Abbreviation
Description
In/Out
1
CD
Carrier Detect
O
2
RX
Receive
O
3
TX
Transmit
I
4
DTR
Data Terminal Ready
I
5
GND
Ground
--
6
DSR
Data Set Ready
O
7
RTS
Request to Send
I
8
CTS
Clear to Send
O
9
RI
Ring Indicator
O
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