Sierra Wireless AceView User's Guide download pdf (Page 17)

Introduction to the AirLink Raven XE

Rev 3.0 Feb.12 17

UMTS

UMTS (Universal Mobile Telecommunications System) supports data transfer

rates of up to 1920 kbit/s; most users can expect performance up to 384 kbit/s. A

UMTS network uses a pair of 5 MHz channels: one in the 1900 MHz range for

uplink, and one in the 2100 MHx range for downlink.

EDGE

EDGE (Enhanced Data rates for GSM Evolution) provides end-to-end packet data

services with an enhanced connectivity building on GPRS technology and using

the established GSM networks. EDGE provides higher transmission rates and

better transmission quality for data than GPRS. EDGE can carry data at speeds

typically up to 384 kbit/s in packet mode.

When EDGE is not available, your AirLink Raven XE will fall-back to GPRS for the

connection to Sprint to provide continued connectivity.

GPRS

General Packet Radio Service (GPRS) is packet-switched with many users

sharing the same tranmission channel, but only transmitting when they have data

to send. This means that the total available bandwidth can be immediately

dedicated to those users who are actually sending at any given moment,

providing higher use where users only send or receive data intermittenly. GPRS

provides speeds of 30 - 70 kbps with bursts up to 170 kbps.

Connection Methods

You can connect the AirLink Raven XE to a USB or an Ethernet (RJ45) port on a

computer. When connected to a USB or Ethernet port, the AirLink Raven XE

behaves like a network card.

USB Port

The AirLink Raven XE 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. USB drivers can be downloaded from the

Sierra Wireless AirLink Solutions web site: http://www.sierrawireless.com/support.

It is recommended that you use a USB 2.0 cable with your AirLink Raven XE and

connect directly to your computer for best throughput.

Virtual Serial Port

The AirLink Raven XE 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

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Sierra Wireless AceView User's Guide Page 17