Supported Protocols; Port Parameters; Dtr Behavior; Inter-Character Timeout - NTI SERIMUX-SECURE-x Installation And Operation Manual

Supported Protocols

In configuring a serial port, the user has three protocol options. The three protocols available are: RawTCP, SSH, and Telnet.
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Choose SSH as the protocol for users logging in from an SSH client program to access a port.
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Choose RawTCP for users connecting directly to a TCP socket.
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Choose Telnet for users logging in from a Telnet client program and accessing the ports.
Use the Host mode configuration page in the web interface to select the correct
protocol.

Port Parameters

In attaching a serial device to a SERIMUX 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 SERIMUX, 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
data bits = 8
parity = none
stop bits = 1
flow control = none
DTR behavior = always high
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 user when the host
mode is configured for dial-in modem or dial-in terminal server mode.

Inter-character Timeout

This setting is only available when the host mode protocol is set for RawTCP. The parameter sets the time value for the SERIMUX
to transfer data stored in the buffer. The SERIMUX transfers data when the buffer is full using the TCP/IP protocol. However, if it is
not full, the SERIMUX will also transfer data dependent on the timeout value selected.

Figure 22- Setup serial port communication parameters

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