AirLink Communications Raven X HSDPA Podręcznik Użytkownika Pobierz pdf (Strona 7)

Raven X HSDPA for Cingular - User Guide, version 2.33 2

Introduction to Raven X HSDPA

Establishing an Internet Connection

The Raven X 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 X 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 X 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 X connects to the Internet. The IP address will not be given to anyone

else.

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

transmission 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 utilization where users only send or receive data intermittently.

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

1. When your Raven X is powered on, it automatically searches for cellular service using

HSDPA.

2. Your Raven X establishes a PPP (Point to Point Protocol or “dial” up connection) link to Cin-

gular’s network, also called registering on the network, and receives an IP address.

3. When your Raven X has received its IP address from Cingular, then it is ready to allow you to

connect to the Internet.

FIGURE 2. Using the Raven X to connect to the Internet

Internet

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AirLink Communications Raven X HSDPA Podręcznik Użytkownika Strona 7