Lenovo TC A55-9636, 9638, 9643, 9644, 9645, 9640 Appendix A. Manual modem commands, Basic AT commands

Page 83

Appendix A. Manual modem commands

The following section lists commands for manually programming your modem.

Commands are accepted by the modem while it is in Command Mode. Your modem is automatically in Command Mode until you dial a number and establish a connection. Commands can be sent to your modem from a PC running communication software or any other terminal devices.

All commands sent to the modem must begin with AT and end with ENTER. All commands can be typed in either upper or lower case, but not mixed. To make the command line more readable, spaces can be inserted between commands. If you omit a parameter from a command that requires one, it is just like specifying a parameter of 0.

Example:

ATH [ENTER]

Basic AT commands

In the following listings, all default settings are printed in bold text.

Command

 

Function

 

 

 

A

 

Manually answer incoming call.

 

 

 

A/

 

Repeat last command executed. Do not

 

 

precede A/ with AT or follow with ENTER.

 

 

 

D_

 

0 - 9, A-D, # and *

 

 

 

 

L

last number redial

 

 

 

 

P

pulse dialing

 

 

 

 

 

Note: Pulse dialing is not supported for

 

 

Australia, New Zealand, Norway, and South

 

 

Africa.

 

 

 

 

T

touch-tone dialing

 

 

 

 

W

wait for second dial tone

 

 

 

 

,

pause

 

 

 

 

@

wait for five seconds of silence

 

 

 

 

!

flash

 

 

 

 

;

return to Command Mode after dialing

 

 

 

DS=n

 

Dial one of the four telephone numbers

 

 

(n=0-3) stored in the modem non-volatile

 

 

memory.

 

 

 

E_

E0

Commands are not echoed

 

 

 

 

E1

Commands are echoed

 

 

 

+++

 

Escape Characters - Switch from Data Mode

 

 

to Command Mode (T.I.E.S. Command)

 

 

 

H_

H0

Force modem on-hook (hang up)

 

 

 

© Lenovo 2005, 2007. Portions © IBM Corp. 2005.

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Contents Page Page Page Page Contents Appendix A. Manual modem Conditions that require immediate action Important safety informationService and upgrades General safety guidelinesStatic electricity prevention Voltage-selection switch Power cords and power adaptersBatteries Extension cords and related devicesPlugs and outlets External devicesHeat and product ventilation Operating environment Electrical current safety informationTo connect To disconnect Lithium battery noticeModem safety information Laser compliance statement Power supply statementAdditional safety information Data safetyCleaning and maintenance Introduction Xvi User Guide Glare and lighting Arranging your workspaceComfort Electrical outlets and cable lengths Air circulationConnecting your computer Setting up your computerUser Guide Setting up your computer User Guide 1394 Completing important tasks Turning on powerFinishing the software installation Shutting down the computer Installing other operating systemsUpdating your operating system Updating your antivirus softwareUser Guide Features Installing optionsMemory Expansion Available options Environment SpecificationsDimensions WeightHandling static-sensitive devices Supported operating positionsTools required Installing external options Locating connectors on the rear of your computer Obtaining device drivers Connector DescriptionOpening the cover Locating components Accessing system board components and drives Identifying parts on the system board Bios WPInstalling memory What to do next Installing PCI adaptersInstalling internal drives Drive specifications Installing a drive in bay Connecting a serial ATA drive Installing a diskette drive in bay Installing options Security features Changing the battery Integrated cable lock Password protectionErasing a lost or forgotten password clearing Cmos Closing the cover and connecting the cables User Guide Creating and using the Product Recovery disc Recovering softwarePerforming backup and recovery operations Using the Rescue and Recovery workspace Creating and using rescue media To create rescue media, do the following Creating and using a Recovery Repair disketteRecovering or installing device drivers Solving recovery problems Setting a rescue device in the startup sequenceUser Guide Using passwords Using the Setup UtilityStarting the Setup Utility program Viewing and changing settingsUsing Security Profile by Device User PasswordAdministrator Password Setting, changing, and deleting a passwordChanging the startup device sequence Selecting a startup deviceSelecting a temporary startup device Exiting from the Setup Utility program Advanced settingsUpdating system programs Using system programsUpdating flashing Bios from a diskette or CD-ROM Recovering from a POST/BIOS update failure Updating flashing Bios from your operating systemUpdating system programs User Guide Symptom Action Troubleshooting and diagnosticsBasic troubleshooting Diagnostic programs PC-Doctor for DOS PC-Doctor for WindowsCreating diagnostic diskettes Optical mouse Cleaning the mousePC-Doctor for Windows PE Non-optical mouse Troubleshooting and diagnostics User Guide ThinkVantage Productivity Center Getting information, help, and serviceInformation resources Online Books folderHelp and service Access HelpSafety and Warranty Calling for service Using the documentation and diagnostic programsPurchasing additional services Using other servicesBasic AT commands Appendix A. Manual modem commandsInternal speaker on until carrier detected Low speaker volumeSet Pulse dial as default Set Tone Dial as defaultExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands Appendix A. Manual modem commands User Guide Appendix B. Notices Trademarks Television output noticeIndex Page Page Part Number 42Y4610
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