Udp Server Characteristics - Sierra Wireless DART 200 CDPD Modem User Manual

Cdpd modem for cdpd versions 1.0 and 1.1

Table of Contents

DART 200 CDPD Modem User's Guide

? ?

NOTE:

At present no carrier is

offering a broadcast

capability.

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NOTE:

UDP is also the only

protocol that can

receive multicast

messages.

PN1197-00 Revision 1.0

To set up the options, first, review Chapter 8, Application Programming,

and the command descriptions in Appendix F, DART AT Command Set

before setting the following parameters, then proceed to step 1.

Command mode echo (En)

Data set ready (DSR) operation (&Sn)

Verbose Mode (Vn)

Data Forwarding operation (\Fn)

Quiet mode (Qn)

Manual transmit control (\Mn)

Online mode echo (Fn)

Flow control (\Qn)

Extended result codes (Xn)

Automatic transmit control (\Tn)

Data carrier detect (DCD) operation (&Cn)

Reception of IP broadcasts (*Bn)

Data terminal ready (DTR) operation (&Dn)

Listening Port (*Ln)

Escape code recognition (&En)

1. Set the key parameter, PAD operating mode (\On), to \O0 for UDP

operation. The default value is \O1, so it must be changed.

2. UDP is the only CDPD protocol that can receive broadcast messages.

Use the AT*Bn command to allow (B1) or to suppress (B0)

reception of broadcast traffic.

3. Check with your carrier to determine if multicast is available in your

area before proceeding to step 4.

4. Direct multicast messages to the modem's listening port (refer to *L

command in Appendix F, DART AT Command Set). Multicast

messages can appear at any time; possibly interspersed with the

application data. The end-user's application must handle the

multicast messages interspersed with the application data. For

applications with the modem set up to use multicast, be aware that it

cannot be suppressed by AT commands.