User guide

Chapter 4

CDPD Connectivity

4.1 CDPD Overview

Cellular Digital Packet Data (CDPD) is an open system deﬁnition that uses digital

transmission on analog cellular (AMPS) channels to provide mobile packet-switched

data services.

The purpose of CDPD is to provide mobile access to the services available through

standard connectionless data protocols such as IP. CDPD could be considered to be a

wireless extension to the Internet that is available anywhere.

You can ﬁnd a fair amount of information about CDPD from the following sources:

1. Internetwork Mobility - The CDPD Approach Book

Taylor, Waung and Banan

Prentice Hall

ISBN: 0-13-209693-5

2. Wireless Data Forum - Formerly CDPD Forum.

4.2 Buying Your Modem

We have tested the Neda-ETWP software with the CDPD Modems listed in this section.

However, any externally powered CDPD Modem should work ﬁne with the Neda-

ETWP software.

4.2.1 Motorola CDPD Personal Messenger 100C

Visit the Motorola Web Site for information on how to order a Motorola CDPD Per-

sonal Messenger 100C CDPD modem.