Dtr (Data Terminal Ready); Virtual Ports - Lantronix SCS Reference Manual

Ports
RJ45 ports have one pin that can be used for either DSR or DCD. If you are using modems, this pin must
be wired to the modem's DCD pin. If you are using another type of device (such as a terminal or printer),
this pin should be wired to the device's DSR pin. Refer to the Pinouts appendix of your User Guide for
instructions.

8.12.3 DTR (Data Terminal Ready)

The SCS asserts DTR when it is ready to accept incoming data or connections. It also uses DTR to cycle the
modem when modem control is enabled by temporarily dropping the signal.
SCS ports can be configured to assert DTR only when a user logs into the port by enabling the DTRWait
characteristic. See Set/Define Ports DTRWait on page 12-71 for details.

8.13 Virtual Ports

Incoming SSH, Telnet, and Rlogin connections are not associated with a physical port. Instead, they are
associated with a virtual port which serves for the duration of the connection. Virtual port connections can
be made only if incoming connections are enabled on the SCS.
Local>> DEFINE SERVER INCOMING TELNET
An incoming login password can be configured with the Set/Define Server
Note:
Incoming command, which is discussed on page 12-119.
Each virtual port is created with a default set of characteristics. The default settings for port 0 connections
are remote processing of the Break key, local switch set to ASCII 12 (Ctrl-L), forward switch set to ASCII
6 (Ctrl-F), and backward switch set to ASCII 2 (Ctrl-B). The Set Port commands can be used to customize
a virtual port during the session, but these customizations cannot be saved.
To make configurations that apply to all virtual ports (all future SSH/Telnet/Rlogin connections), use
Define Port commands, specifying port 0 as the port number. When the command in Figure 8-54 is used,
all future network logins will be required to enter a username and password.
Local>> DEFINE PORT 0 AUTHENTICATION ENABLED
Port 0 can only be configured using Define, not Set, commands.
Note:
To display the characteristics used for virtual ports, enter the following command:
Local>> LIST PORT 0
Figure 8-53: Enabling Incoming Connections
Figure 8-54: Configuring Virtual Ports
Figure 8-55: Displaying Virtual Port Characteristics
8-22
Virtual Ports