CN2600 Series Configuring Serial Port Operation Modes
Terminal Applications
Terminal ASCII (TERM_ASC)
TCP alive check time (default=7 min): This field specifies how long the CN2600 will wait for a response to
“keep alive” packets before closing the TCP connection. The CN2600 checks connection status by sending
periodic “keep alive” packets. If the remote host does not respond to the packet within the time specified in this
field, the CN2600 will force the existing TCP connection to close. For socket and device control modes, the
CN2600 will listen for another TCP connection from another host after closing the connection. If TCP alive
check time is set to 0, the TCP connection will remain open even if there is no response to the “keep alive”
packets.
Inactivity time (default=0 min): This field specifies how long the CN2600 will wait for incoming and outgoing
data through the serial port before closing the TCP connection. The TCP connection is closed if there is no
incoming or outgoing data through the serial port for the specified Inactivity time. If this field is set to 0, the
TCP connection is kept active until a connection close request is received.
ATTENTION
Inactivity time should at least be set larger than that of Force transmit time. To prevent the unintended loss of
data due to the session being disconnected, it is highly recommended that this value is set large enough such
that the intended data transfer is completed.
Auto-Link Protocol: If this field is set to None, the CN2600 will not connect to the host automatically. If
Auto-Link Protocol is set to Telnet or Rlogin, the CN2600 will connect to the host automatically using the
specified protocol.
Primary and Secondary host address: If specified, the fields designate permanent hosts to which the
terminal will always be connected.
Telnet TCP port (default=23): By default, the Telnet TCP port number is set to 23, which is the default TCP
port number for Telnet.
Terminal type (default=ansi): Some older terminal applications may require that the terminal type be
transmitted before the connection can be established. You may need to refer to the server’s documentation to
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