32 IP920 Operating Manual: Chapter 4 Configuration
TCP Server
When TCP Server protocol is selected, IP920 is put into a passive mode. It
listens on a specific TCP port to accept an incoming TCP connection from a
remote station, for example a work station inside a LAN network. Once a
connection is established any received data from serial port is passed on to
the remote TCP client; otherwise serial data is simply dropped.
Local Listening Port: a TCP port the remote server listens to. It allows a
TCP connection to be created by a TCP client to carry serial port data.
Incoming Connection Timeout (s): tells the TCP server when to terminate
the TCP connection if the connection is in idle state.