Dial-Up Data Overview - Iridium 9500 User Manual

DIAL-UP DATA SERVICE ---------------------------------------------------------------------------------------------------------OVERVIEW
1

Dial-Up Data Overview

Dial-Up Data Service provides dial-up connectivity through your Iridium phone to another
computer, a remote LAN (e.g., a corporate network), or an Internet Service Provider (ISP). This
service offers a typical data rate of 2.4 Kbps.
You will be able to use Dial-Up Data service just as you would use the modem on your computer
to dial a call through the public switched telephone network (PSTN). The only differences are
that the dialed telephone number must conform to the international dialing pattern used by
Iridium, and that you will use your Iridium phone as the data modem. In essence, your Iridium
phone appears as an external modem to your computer. Before using Dial-Up Data, you will
need to install the Motorola Satellite Series Data Modem driver (provided on the Iridium World
Data Services CD) on your computer. You will then be able to use standard software applications
(e.g., Microsoft Dial-Up Networking) to initiate data calls with Dial-Up Data Service.
How it works
Dial-Up Data Service functions in much the same way. From the perspective of your computer,
the Iridium handset is an external modem. On your computer, you will configure a dial-up
networking connection. As part of that connection, you will identify the modem associated with
the Iridium handset and the phone number to dial. Then, in dial-up networking you will enter your
user name and password to access your ISP, and you will initiate the connection. Your handset
will dial and initiate a connection with the Iridium gateway through the Iridium satellite
constellation. Since your Iridium handset is requesting to establish a data connection, the switch
at the gateway will route the call through a modem. The modem at the Iridium gateway will then
dial into and connect to another modem at your ISP. Once connected and a session has been
established, you can check your email and browse the Internet just like you would across the
PSTN. Figure 1 illustrates how a Dial-Up data call is routed.
Internet
ISP
PSTN
Corporate
Network
Iridium Gateway
Figure 1. Iridium Dial-Up Data Connectivity
Iridium Satellite LLC 3 Rev. 4; February 1, 2002