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5. Choose Save & Apply.
Supported Protocols
In configuring a serial port, the user has three protocol options. The three
.
protocols available are: RawTCP, SSH, and Telnet. Choose SSH as the
protocol for users logging in from an SSH client program to access a port.
The Digi CM sup-
Choose RawTCP for users connecting directly to a TCP socket. Choose Telnet
ports three protocol
for users logging in from a Telnet client program and accessing the ports. Use
options: SSH, Raw
TCP, and Telnet.
the Host mode configuration page in the web interface to select the correct
protocol.
Port Parameters
In attaching a serial device to a Digi CM serial port, the port parameters must
match. The serial ports by default are enabled, meaning users have full access
to the port. To configure the port parameters for the Digi CM, do the following:
1. Access the web interface.
2. Under the Serial Port heading, choose Configuration.
3. Choose All or an Individual port > Port parameters.
4. Fill in the serial port parameters. The following are the defaults: bps=9600,
5. Choose Save & Apply.
DTR Behavior
DTR can be set on the serial port to one of three settings: always high, always
low, or High when open. Setting the DTR to High when open keeps the DTR
high if a TCP connection is established. The DTR setting cannot be set by the
Chapter 4
•
Inactivity timeout: The timeout length ranges from 1 to 3600 seconds. 0
means that there is no timeout.
•
Modem init string: Use the default string or enter your own string.
•
Dial-in modem escape sequence: The key sequence used to return to
the menu in dial-in mode.
•
Use comment: Determines whether a port user is prompted to add a
comment each time the port is accessed.
•
Quick connect via: Determines method for connecting to a port when in
console server mode.
data bits=8, parity=none, stop bits=1, flow control=none, and DTR behav-
ior=always high.
Configuring Ports
31
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