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8 Installation
LED Name ON Blinking
TXD Transmit
Indicator
The DTE is sending
data to modem for
transmission.
RXD Receive
Indicator
The modem is
sending received
data to the DTE.
CD Carrier Detect The modem senses a
valid data carrier on
the line.
DTR Data Terminal
Ready
The attached
computer is ready to
send or receive data.
DSR Data Set Ready The modem is ready
to send or receive
data.
RTS Request to Send The DTE requests
to send data for
transmission.
CTS Clear to Send The modem is able
to accept data for
transmission.
OH Off Hook
Indicator
The modem is in
Data Mode or Off
Hook.
ORG Originate Mode
Indicator
Modem is in
Originate Mode.
RI Ring Indicator Modem is in Auto-
Answer mode.
Modem
detected an
incoming call.