Digi WAN 3G User Manual page 155

Serial port information
The Serial page of System Information lists the serial ports that are configured for the Digi device.
Click on a port to view the detailed serial port information.
Serial port diagnostics page
The Serial Port Diagnostics page of system information provides details that may aid in
troubleshooting serial communication problems.
Configuration
The Configuration section includes the electrical interface (Port Type) and basic serial
settings.
Signals
In the Signals section shows the serial port signals are green when asserted (on) and gray
when not asserted (off). The meanings of the signals are:
RTS: Request To Send.
CTS: Clear To Send.
DTR: Data Terminal Ready.
DSR: Data Set Ready.
DCD: Data Carrier Detected.
OFC: Output Flow Control. Indicates that flow control is enabled on the remote
side of the serial-port connection, and that the Digi device should stop sending data.
IFC: Input Flow Control. Indicates that the Digi device is operating as if flow
control is enabled for incoming data sent from the remote side of the serial-port
connection. This signal is more of an indication that flow control is intended or
expected rather than true state information. If the remote side has a flow-control
mechanism enabled, the Digi device will use it.
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