User guide

Raven EDGE/GPRS for Cingular - User Guide, version 2.31 2
Introduction to Raven EDGE/GPRS
Establishing an Internet Connection
The Raven uses Cingular as an ISP (Internet Service Provider) to connect you to the Internet.
Steps of a connection:
Dynamic vs. Static IP Addresses
As stated above, when your Raven registers on Cingular’s network, it receives an IP address. There
are two types of addresses on networks: dynamic and static.
• Dynamic addresses are assigned on a “need to have” basis. Your Raven might not always
receive the same address each time it connects with Cingular.
• Static addresses are permanently assigned to a particular account and will always be used
whenever your Raven connects to the Internet. The IP address will not be given to anyone else.
Most ISPs (cellular included) use dynamic IP addresses rather
than static IP addresses since it
allows them to reuse a smaller number of IP addresses for a large number of customers. A
dynamic IP address is suitable for many common Internet uses, such as web browsing, looking up
data on another computer system, or other client functions (such as data only being sent out or only
being received after an initial request).
1. When your Raven is powered on, it automatically searches for cellular service using EDGE/
GPRS.
2. Your Raven establishes a PPP (Point to Point Protocol or “dial” up connection) link to Cingu-
lar’s network, also called registering on the network, and receives an IP address.
3. When your Raven has received its IP address from Cingular, then it is ready to allow you to
connect to the Internet.
FIGURE 2. Using the Raven to connect to the Internet
Internet