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Document 2131141. Rev 1.0 Feb.09
CDMA 3G services
The modem operates over a type of wireless network called
CDMA
(Code Division Multiple Access).
CDMA 3G technology provides a variety of connectivity
features, depending on your service provider and account:
•
1x‐EVDO Rev. A supports Internet connections with data
rates up to 3.1 Mbps (downlink from the network) and
1.8 Mbps (uplink to the network). Average data rates are
450‐800 Kbps (downlink from the network) and
300‐400 Kbps (uplink to the network). Actual speed
depends on the network conditions.
•
1x‐EVDO Rev. 0 supports Internet connections with data
rates up to 2.4 Mbps (downlink from the network) and
153 Kbps (uplink to the network). Average data rates are
400‐700 Kbps (downlink from the network) and
40‐80 Kbps (uplink to the network). Actual speed depends
on the network conditions.
•
1X supports Internet connections with data rates up to
153 Kbps. Actual speed depends on the network condi‐
tions.
Once the connection is established, you can open your browser
and connect to any web site that is accessible through the
Internet, or access other Internet services (such as e‐mail).
The connection is "active" when data transmission is
occurring. If data transmission stops for a period of time
(determined by the network), the connection becomes
dormant.
•
Circuit switched (dial‐up) data, using the earlier CDMA
IS‐95 specification, supports data connections to any dial‐
in service at rates up to 14.4 Kbps.
•
QNC (Quick Net Connect) provides a simplified way to
dial into an Internet connection (using circuit switched
data) where 3G (1xEV‐DO or 1X) high‐speed packet
service is not available.
•
SMS
(Short Message Service) allows you to send and
receive short text messages using the modem.
Additional features of the modem
Beyond the features of the CDMA network, the modem
provides additional software features:
•
PIN security code to protect your modem and account
from unauthorized use.
•
A wizard to assist with activating your CDMA account.
Introducing the USB 598 modem
11
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