SENA LS110 - Manual (Page 24)

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4: Host Mode Configuration
4.1 Host mode
4.1.1 Overview
Host mode represents the operating session mode of the LS110. Several host modes are available for
the data communication between serial devices and remote hosts.
Table 4-1 The LS110 session modes
Mode Description
TCP server
Select this mode, when users want the LS110 to operate as a TCP server. The LS110 stands
by until there is any TCP connection request. If TCP connection is not already established at
that time, the LS110 accepts the request and the session is established. In the established
state, it transmits the data through the corresponding serial port if there is any data from the
remote host. Since the LS110 supports only one TCP session per serial port, the additional
TCP connection request will be rejected.
TCP client
Select this mode, when users want the LS110 to operate as a TCP client. When the serial
device sends data or pre-defined timer is expired, the LS110 tries to establish a TCP
connection to a remote server through its TCP port. If a TCP session is established between
them, the LS110 will send data to the server. If there’s any data from the server during the
session, it will also send the data through the serial port. However, if the LS110 failed to
connect to the remote server, the data from the serial port will be discarded.
TCP
server/client
If you are not sure which mode to choose, select this mode since it will be applied in most
applications. In this mode, the LS110 operates as TCP server AND client. If the connection is
not established, it will accept all incoming connection. If the connection is not established and
there are any data from the serial device, it will connect to the remote host.
UDP
tunneling
The UDP tunneling mode operation is similar to that of TCP server/client mode except that it is
based on UDP protocol and only one pre-defined remote host is able to communicate with the
LS110.
UDP server
While UDP tunneling mode allows only one remote host for UDP communications, UDP server
mode allows any remote host to access the LS110. In this mode, the LS110 gets the
information on the remote host from the latest incoming datagram information.
Modem
emulation Select this mode when the serial device supports modem AT commands or users want to
perform the session control by using AT commands. Only a TCP session is supported.
Telnet
Server
This mode enables your existing serial communication program to be used over the network
allowing you to keep using your existing program without any modification. This mode is
similar to TCP Server. This mode supports the Telnet protocol over TCP, and RFC2217.