User manual

RLXIC-EV ♦ Intelligent Cellular Introduction to the RLXIC-EV
RadioLinx® Intelligent Cellular Ethernet Gateway for Verizon User Manual
Page 12 of 104 ProSoft Technology, Inc.
March 10, 2010
1.4 EV-DO
CDMA (Code Division Multiple Access) is the underlying digital radio network
technology used by many cellular providers across the globe and is prevalent in
North America. To provide backward compatibility and seamless connections in a
wider range of locations, the RLXIC-EV will fall back to 1x when EV-DO is not
available.
ProSoft Technology is certified with Verizon, a prominent North American 1x and
EV-DO carrier.
EV-DO revision A is an enhancement on the original revision 0 adding expanded
upload capabilities and a more robust connection overall. In addition to
increasing the downlink speed, revision A also increases the uplink speed. In
addition, it is backwards compatible and automatically connects with existing and
broadly deployed EV-DO Rev. 0 and 1x networks ensuring reliable and pervasive
connectivity.
1.4.1 Security
1x data transmissions are highly secure. Originally developed based upon the
"spread spectrum" pioneered by the US Department of Defense, security in
CDMA technologies is obtained by spreading the digital information contained in
a particular signal of interest over multiple coded paths, over a much greater
bandwidth than the original signal.
1.5 Connection methods
You can connect the RLXIC-EV to a USB or an Ethernet (RJ45) on a computer.
When connected to a USB or Ethernet port, the RLXIC-EV behaves like a
network card.
1.5.1 USB
The RLXIC-EV is equipped with a USB port, which increases the methods by
which you can send and receive data. The USB port can be set to work as either
a virtual Ethernet port or a virtual serial port. A driver installation is required to
use the USB port in either mode.
It is recommended that you use a USB 2.0 cable with your RLXIC-EV and
connect directly to your computer for best throughput.
1.5.2 Virtual serial port
The RLXIC-EV supports one virtual serial port over USB. This VSP can be used,
for example, to send AT commands, or to run many serial based applications
such as HyperTerminal
®
.