Lenovo 4158, 4155, 4218 manual Extended AT commands, Enable RTS/CTS hardware flow control

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Extended AT commands

Command

 

Function

 

 

 

&C_

&C0

Force Carrier Detect Signal High (ON)

 

 

 

 

&C1

Turn on CD when remote carrier is present

 

 

 

&D_

&D0

Modem ignores the DTR signal

 

 

 

 

&D1

Modem returns to Command Mode after DTR

 

 

toggle

 

 

 

 

&D2

Modem hangs up, returns to the Command

 

 

Mode after DTR toggle

 

 

 

 

&D3

Resets modem after DTR toggle

 

 

 

&F_

&F

Recall factory default configuration

 

 

 

&G_

&G0

Guard tone disabled

 

 

 

 

&G1

Guard tone disabled

 

 

 

 

&G2

1800 Hz guard tone

 

 

 

&K_

&K0

Disable flow control

 

 

 

 

&K3

Enable RTS/CTS hardware flow control

 

 

 

 

&K4

Enable XON/XOFF software flow control

 

 

 

 

&K5

Enable transparent XON/XOFF flow control

 

 

 

 

&K6

Enable both RTS/CTS and XON/XOFF flow

 

 

control

 

 

 

&M_

&M0

Asynchronous operation

 

 

 

&P_

&P0

US setting for off-hook-to-on-hook ratio

 

 

 

 

&P1

UK and Hong Kong off-hook-to-on-hook ratio

 

 

 

 

&P2

Same as &P0 setting but at 20 pulses per

 

 

minute

 

 

 

 

&P3

Same as &P1 setting but at 20 pulses per

 

 

minute

 

 

 

&R_

&R0

Reserved

 

 

 

 

&R1

CTS operates per flow control requirements

 

 

 

&S_

&S0

Force DSR Signal High (ON)

 

 

 

 

&S1

DSR off in command mode, on in online

 

 

mode

 

 

 

&T_

&T0

Ends test in progress

 

 

 

 

&T1

Perform Local Analog Loopback Test

 

 

 

 

&T3

Perform Local Digital Loopback Test

 

 

 

 

&T4

Grant Remote Digital Loopback Test request

 

 

by remote modem

 

 

 

 

&T5

Deny Remote Digital Loopback Test request

 

 

 

 

&T6

Perform a Remote Digital Loopback Test

 

 

 

 

&T7

Perform a Remote Digital Loopback Test and

 

 

Self-Test

 

 

 

 

&T8

Perform Local Analog Loopback Test and

 

 

Self-Test

 

 

 

&V

&V0

Displays Active and Stored Profiles

 

 

 

Appendix A. Manual modem commands 53

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Contents ThinkStation User Guide Page ThinkStation User Guide Second Edition October Copyright Lenovo Contents Appendix B. System memory speed Appendix C. Notices Introduction Vi User Guide Important safety information User Guide Comfort Arranging your workspaceGlare and lighting Electrical outlets and cable lengths Air circulationConnecting your computer Setting up your computerUser Guide Setting up your computer User Guide Setting up your computer If you have powered speakers with an ac power adapter 1394 Finishing the software installation Turning on computer powerCompleting important tasks Installing external options Installing other operating systemsUpdating your operating system Updating your antivirus softwareFeatures Installing the computer on a rack shelfConnectivity Security features Dimensions SpecificationsUser Guide Software provided with your Windows operating system Software overviewSoftware provided by Lenovo Lenovo ThinkVantage Toolbox PC-Doctor for Rescue and RecoveryLenovo System Toolbox Adobe ReaderStarting the Setup Utility program Using the Setup UtilityViewing and changing settings Using passwordsUser Password Password considerationsAdministrator Password Setting, changing, and deleting a passwordSelecting a startup device Enabling or disabling a deviceSelecting a temporary startup device Exiting from the Setup Utility program Advanced settingsSelecting or changing the startup device sequence Installing Sata or SAS hard disk drives Installing hard disk drives and configuring RAIDFrom the RAID Config menu, select Create array From the RAID Config menu, select Delete array Configuring the Marvell Bios Setup to delete an arrayUser Guide Updating flashing Bios from a disc Using system programsUpdating system programs Recovering from a POST/BIOS update failure Updating flashing Bios from your operating systemUpdating system programs User Guide Basic troubleshooting Troubleshooting and diagnosticsDiagnostic programs Troubleshooting and diagnostics PC-Doctor for DOS Creating a diagnostic discOptical mouse Cleaning the mouseNon-optical mouse 2 Ball 3 Plastic rollers 4 Ball cage Creating and using recovery media Recovery informationCreating recovery media Performing backup and recovery operations Using recovery mediaPerforming a recovery operation Performing a backup operationUsing the Rescue and Recovery workspace Creating rescue media Creating and using rescue mediaCreating and using a recovery repair diskette Using rescue mediaCreating a recovery repair diskette Installing or reinstalling device drivers Using a recovery repair disketteSolving recovery problems Setting a rescue device in the startup sequenceInformation resources Getting information, help, and serviceOnline Books folder Lenovo ThinkVantage ToolsHelp and service Safety and WarrantyUsing the documentation and diagnostic programs Calling for serviceUsing other services Purchasing additional services Basic AT commands Appendix A. Manual modem commandsLow speaker volume Enable RTS/CTS hardware flow control Extended AT commands+MS=? MNP/V.42/V.42bis/V.44 commandsFax Class 2 commands Fax Class 1 commandsVoice commands Appendix A. Manual modem commands User Guide Appendix B. System memory speed User Guide Appendix C. Notices European conformance CE mark Trademarks Television output noticeIndex Page Page User Guide Page Part Number 53Y4327

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