Sierra Wireless DART 200 CDPD Modem manual Cdpd network overview

DART 200 CDPD Modem User’s Guide 1 Introduction

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NOTE:

The EID is found on the label on the bottom of your DART 200.

Contacting your cellular carrier

There are currently two cellular carriers in each market area: the A side carrier and the B side carrier. Each carrier can potentially install and enable CDPD on their cellular network. The CDPD network allows end-users to visit the regions of other carriers, as well as move within their home cellular system.

Contact your cellular provider to get an IP Address for your modem. This IP address lets you operate the modem on the CDPD network. Although the modem can perform some basic functions without an IP Address, it cannot register, ping, or run end-user applications. Your carrier requires the Equipment Identifier (EID) of the DART 200 to give you an IP Address.

Ask your carrier for the following information:

∙Side of their operation (A or B)

∙IP Address

∙IP Address of a router or server to ping when you are testing

CDPD network overview

The CDPD system is an extensive communications system overlaying the existing cellular voice network, as shown in Figure 1-2. It takes advantage of the investments already made by cellular providers. By adding CDPD to the network, packet data can be interspersed with voice communications at an advantageous cost to the end-user.

Figure 1-2. CDPD network

M-ES			F-ES
MAS/	MDBS	MDIS	Host
CDPD			System
Modem
			Public or Private
	Cellular Tower		Packet Data Networks

The communication flow sequence includes:

1.Data packets transmitted from the Mobile End Station (M-ES) are received at the cellular towers by Mobile Data Base Stations (MDBSs)

2.Data packets are passed by the MDBS to the controlling Mobile Data Intermediate System (MDIS)

PN1197-00 Revision 1.0 1-3