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Modem Command Guidelines (Advanced Users Only)
b
Modem Command Guidelines
(Advanced Users Only)
Compaq Notebook Series
Document Part Number: 267638-001
April 2002
This document, designed for programmers, software engineers,
system administrators, and other advanced users, provides
guidelines for working with modem commands.
© 2002 Compaq Information Technologies Group, L.P.
Compaq, the Compaq logo, Evo, and Presario are trademarks of Compaq
Information Technologies Group, L.P. in the U.S. and/or other countries.
Microsoft and Windows are trademarks of Microsoft Corporation in the U.S.
and/or other countries.
All other product names mentioned herein may be trademarks of their respective
companies.
Compaq shall not be liable for technical or editorial errors or omissions
contained herein. The information is provided “as is” without warranty of any
kind and is subject to change without notice. The warranties for Compaq
products are set forth in the express limited warranty statements accompanying
such products. Nothing herein should be construed as constituting an additional
warranty.
Modem Command Guidelines
(Advanced Users Only)
First Edition April 2002
Document Part Number: 267638-001
Contents
Modem Command Guidelines
Accessing HyperTerminal . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Entering a Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Identifying the Modem Type . . . . . . . . . . . . . . . . . . . . . . . . 2
Editing and Executing a Command . . . . . . . . . . . . . . . . . . . 3
Omitting a Parameter in a Command Line . . . . . . . . . . . . . 3
Repeating a Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Understanding Result Codes . . . . . . . . . . . . . . . . . . . . . . . . 4
Using Online Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Escaping from Online Mode to Online Command Mode . . 5
Creating a Command Mode Shortcut. . . . . . . . . . . . . . . . . . 5
Modem Command Guidelines (Advanced Users Only)
iii
Modem Command Guidelines
Accessing HyperTerminal
An easy way to issue commands to the modem is via
HyperTerminal, included with Microsoft Windows operating
systems. To access HyperTerminal:
1. If you are using Windows 98, Windows 2000, or
Windows Me, select Start > Programs > Accessories >
Communications > HyperTerminal.
2. If you are using Windows XP Home or XP Professional,
select Start > All Programs > Accessories >
Communications > HyperTerminal.
Entering a Command
administrators, and other advanced users should access or use
modem commands. For help with modem problems, refer to the
Modem and Networking guide on this CD or contact your Compaq
authorized dealer, reseller, or service provider.
When using AT commands, start every command line (except
the
A/
and
+++
commands) with the attention (
AT
) code
characters; otherwise, the modem will not execute the
command.
Modem Command Guidelines (Advanced Users Only)
1
Ä
CAUTION:
Only programmers, software engineers, system
Use the following guidelines when issuing modem commands:
■
Modem Command Guidelines
■
Type commands following the
AT
prefix in uppercase or
lowercase letters or a combination of both.
■
Always type the
AT
prefix in the same case (not
At
or
aT
).
■
Enter telephone numbers with or without punctuation; for
example, (123) 456-7890 or 1234567890.
Identifying the Modem Type
To verify which manufacturer’s modem is included with your
notebook, follow these steps:
Windows 98:
1. Right-click My Computer > Properties > Device Manager.
2. Double-click Modems.
3. Double-click the drop-down icon and verify the modem
manufacturer listed on the General tab.
Windows 2000 Professional:
1. Right-click My Computer > Properties > Hardware tab >
Device Manager button.
2. Double-click Modems.
3. Double-click the drop-down icon and verify the manufacturer
listed on the General tab.
2
Modem Command Guidelines (Advanced Users Only)
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