4.7 Remote Access (Tunneling)
To "tunnel", in this context, is to transmit data between two points through a private
conduit on a shared or public network. The network could be an Ethernet LAN, a WAN,
or the Internet. There is a Serial-to-Ethernet iServer that allows for a connection between
a serial device and a PC, or between two serial devices, using an existing network rather
than dedicated wiring.
The connected serial devices to iServer’s can communicate with each other back and
forth over the networks. This characteristic is called Tunneling and it’s illustrated below.
Figure 4.14 PC-to-Device Communication
Figure 4.15 Device-to-Device Communication
In order to use this Tunneling feature, some settings are required within the local and
remote iServer’s.
COL
ON
TX
RX
Serial-to-Ethernet
(Local iServer)
Barometric
Pressure
Remote
iServer
RS-232
Application
Software
Serial-to-Ethernet
(Local iServer)
RS-232
Remote
iServer
29