Item Notes Description
Edit Button Click Edit to add or change a Legal Host IP address.
Save Button Click Save to save the settings
Undo N/A Click Undo to cancel the settings
Table 134 – Legal Host IP Definition - UDP operation mode
5.1.2.7 Operation Mode – RFC-2217
Figure 229 – RFC-2217 Mode
RFC-2217 defines general COM port control options based on the telnet protocol. A host computer with an RFC-2217 driver
installed can monitor and manage the remote serial device attached to the router’s serial port as though they were
connected to the local serial port. When a virtual serial port on the local serial device is being created, you must specify the IP
address of the host computers to establish connection with.
Any 3rd party driver supporting RFC-2217 can be installed on the host computer. The driver establishes a transparent
connection between the host and a serial device by mapping the IP:Port of the router’s serial port to a virtual local COM port
on the host computer.
The host computer can directly send data to the serial device via the router, and receive data from the serial device via the
router at the same time. The router supports up to 4 Internet host computers.
RFC-2217 defines general COM port control options based on the telnet protocol. In RFC-2217 mode, a remote host can
monitor and manage remote serial devices in the same manner as if they were connected to the local serial port. When a
virtual serial port on the local serial device is created, you must specify the IP address of the remote hosts to establish
connections with.
Figure 22 – Operation Mode Definition for each Serial Port – RFC-2217 Mode
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