Lenovo 8423 Low speaker volume, Internal speaker on until carrier detected, Sr?, Sr=n, Detection

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Command		Function

	H1	Force modem off-hook (make busy)
		Note: H1 command is not supported for Italy

I_	I0	Display product-identification code

	I1	Factory ROM checksum test

	I2	Internal memory test

	I3	Firmware ID

	I4	Reserved ID

L_	L0	Low speaker volume

	L1	Low speaker volume

	L2	Medium speaker volume

	L3	High speaker volume

M_	M0	Internal speaker off

	M1	Internal speaker on until carrier detected

	M2	Internal speaker always on

	M3	Internal speaker on until carrier detected and
		off while dialing

N_		Included for compatibility only, provides no
		effect

O_	O0	Return to Data Mode

	O1	Return to Data Mode and initiate an equalizer
		retrain

P		Set Pulse dial as default

Q_	Q0	Modem sends responses

Sr?		Read and display value in register r.

Sr=n		Set register r to value n (n = 0-255).

T		Set Tone Dial as default

V_	V0	Numeric responses

	V1	Word responses

W_	W0	Report DTE speed only

	W1	Report line speed, error correction protocol,
		and DTE speed.

	W2	Report DCE speed only

X_	X0	Hayes Smartmodem 300 compatible
		responses/blind dialing.

	X1	Same as X0 plus all CONNECT
		responses/blind dialing

	X2	Same as X1 plus dial tone detection

	X3	Same as X1 plus busy detection/blind dialing

	X4	All responses and dial tone and busy signal
		detection

Z_	Z0	Reset and retrieve active profile 0

	Z1	Reset and retrieve active profile 1

34User Guide

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Contents

User Guide Types 8097, 8143, 8144 Types 8422, 8423 Page User Guide Types 8097, 8143, 8144 Types 8422, 8423 Page Contents Iv User Guide Important safety information Conditions that require immediate actionGeneral safety guidelines ServicePower cords and power adapters Extension cords and related devicesPlugs and outlets BatteriesCD and DVD drive safety Heat and product ventilationTo connect To disconnect Additional safety informationLithium battery notice Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesMemory Operating systems, preinstalled varies by model type Available options Specifications Handling static-sensitive devices Installing external optionsTools required Locating the connectors on the front of your computer Locating the connectors on the rear of your computer Connector Description Obtaining device driversRemoving the cover Locating components Identifying parts on the system boardInstalling a memory module What to do next Installing adapters Installing internal drives Drive specifications Installing a drive in bay 1 or bay Installing a hard disk drive in bay Installing options Connecting drives Connecting the first optical driveConnecting a serial ATA hard disk drive Installing security featuresPadlock Password protectionChanging the battery Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Using passwordsIDE Drive User Password User PasswordAdministrator Password IDE Drive Master PasswordSelecting a startup device Setting, changing, and deleting a passwordUsing Security Profile by Device Changing the startup sequence Exiting from the Setup Utility programSelecting a temporary startup device Appendix A. Updating system programs Updating flashing Bios from a diskette or CD-ROMUpdating flashing Bios from your operating system System programs Recovering from a POST/BIOS update failure Cleaning a mouse with a ball Appendix B. Cleaning the mouseCleaning an optical mouse User Guide Appendix C. Manual modem commands Basic AT commandsSet Tone Dial as default Low speaker volumeSet Pulse dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 1 commands Fax Class 2 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Television output notice TrademarksIndex Page Page Part Number 19R0450