2Overview
• Universal Mobile Telecommunications System (UMTS)
UMTS is a 3G technology standard for wide-area wireless data communication that is based
on the GSM standard. The UMTS standard uses advanced network operator mobile Internet
services to achieve data transfer rates up to 384 kb/s, which are ideal for media streaming,
video MMS, internet shopping, and banking.
• Enhanced Data Rates for Global Evolution (EDGE)
EDGE enhances GPRS by increasing data throughput over GPRS by as much as three times,
depending upon the network radio signal strength and quality. GPRS networks that are
enhanced with EDGE are often referred to as Enhanced GPRS (E-GPRS) networks.
EDGE provides the “always on” capability of GPRS but at faster speeds. EDGE technology
is transparent — simply make a GPRS connection as usual and benefit from the increase in
speed where EDGE is available in a network. When EDGE is available you can expect
increased speeds of up to 200 kb/s, dependent on network coverage.
• General Packet Radio Service (GPRS)
GPRS is a type of network connection that provides “always on” mobility. The connection
set up is fast. After you are connected, applications can send and receive data whenever
required. In today’s GPRS networks, the MD300 receives data at speeds up to 53.6 kb/s
and transmits at speeds up to 26.8 kb/s.
• Short Message Service (SMS)
You can send and receive SMS text messages using the Text Messages window in Wireless
Manager or other application software.
MD300 Flash Drive
The MD300 may be used as a flash memory drive. Once the MD300 is installed and functioning as
a modem, you may use the memory space on the drive to store and transport your own files and
media.
Hardware overview
Your Sony Ericsson MD300 uses the 5 volt power supply provided by the USB port. USB devices
which draw more than 100mA from the port are known as High Power USB devices; the MD300
is a high power device.
The amount of power that your MD300 draws from the PC (laptop battery when mobile) depends
on several factors, including status, frequency band, and distance to the base station that is used.
The MD300 can be turned off under software control from the Wireless Manager application or the
signal strength icon in the status tray. You must remove the modem from the laptop when flying to
prevent any accidental transmission.
