The Cdma Wireless Network - Sierra Wireless AirCard 595 User Manual

Note: More information about
CDMA networks is available on
the CDMA Development Group
www.cdg.org
web site,
Note: Most service providers
have coverage maps on their
web sites.
Note: The fee for service is
usually higher when you are
roaming (connecting to a
network other than the one
belonging to your service
provider).
Document 2130681. Rev 1.0 Jan.07

The CDMA wireless network

This is the worldwide infrastructure providing the radio
coverage that allows you to stay connected. Made up of radio
towers and a variety of network switches, routers, and servers,
the network is an interconnection of many service providers.
.
There are CDMA networks that operate in the frequency bands
supported by the AirCard PC Card throughout North America
and parts of Latin America, Asia, and New Zealand. However,
each service provider operates a network that covers a limited
geographical area within the overall CDMA coverage area.
Most service providers have "roaming" agreements with other
service providers, so that they can offer service outside of the
coverage area of their own networks. For example, assuming
you live in Vancouver (Canada), and travel frequently to
Seattle (United States), you can obtain an account with a
Vancouver service provider that has a roaming agreement with
a service provider in Seattle. You would then have local service
in Vancouver, and roaming service in Seattle.
Introducing the AirCard® 595 PC Card
12