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The serial port type determines the protocol used on the serial port. Possible values are:

• socket: the port is set to TCP raw mode.
• telnet: the port supports the telnet protocol.
• device: indicates that the emulated serial line is connected to a physical terminal on the host.

Each port is mapped to a TCP socket on the emulator host or to a physical line. This parameter defines the TCP port used or the name of the physical device. A port number must be unique among all active port numbers on the host system.

A TCP port is specified as "<where-to-listen>:<portnumber>". It requires a port type of socket or telnet.

Default values (listening on all interfaces):

• ":30000" for line 1
• ":30002" for line 2

To restrict console connections to certain host interfaces or host IP addresses, set where-to-listen to the respective interface name or IP address. The settings lo:<portnumber> and <portnumber> (without the colon) are equivalent.

A physical device is specified as "<device-file>". It requires a port type of device.

Example:

• "/dev/ttyS0"
• "/dev/ttyUSB0"