Multitech MT5634ZBA-USB manual AT Command Summary

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Chapter 4 - AT Commands, S-Registers and Result Codes

AT Command Summary

Command: AT	Attention Code
Values:	n/a
Description:	The attention code precedes all command lines except A/, A:, and escape sequences.
Command: ENTER Key
Values:	n/a
Description:	Press the ENTER (RETURN) key to execute most commands.
Command: A	Answer
Values:	n/a
Description:	Answer call before final ring.
Command: A/	Repeat Last Command
Values:	n/a
Description:	Repeat the last command string. Do not precede this command with AT. Do not press EN-
	TER to execute.
Command: Bn	Communication Standard Setting
Values:	n = 0–3, 15, 16
Default:	1 and 16
Description:B0	Select ITU-T V.22 mode when modem is at 1200 bps.
B1	Select Bell 212A when modem is at 1200 bps.
B2	Deselect V.23 reverse channel (same as B3).
B3	Deselect V.23 reverse channel (same as B2).
B15	Select V.21 when the modem is at 300 bps.
B16	Select Bell 103J when the modem is at 300 bps.
Command: Cn	Carrier Control
Values:	n = 1
Default:	1
Description:C0	Transmit carrier always off. (Not supported.)
C1	Normal transmit carrier switching (included for backward compatibility with some software).
Command: Ds	Dial
Values:	s = dial string (phone number and dial modifiers)
Default:	none
Description:	Dial telephone number s, where s may up to 40 characters long and include the 0–9, *, #,
	A, B, C, and D characters, and the L, P, T, V, W, S, comma (,), semicolon (;), !, @, ^ and $
	dial string modifiers.

Dial string modifiers:

LRedial last number. (Must be placed immediately after ATD.) P Pulse-dial following numbers in command.

T Tone-dial following numbers in command (default).

V Switch to speakerphone mode and dial the following number. Use ATH command to hang up.

W Wait for a new dial tone before continuing to dial. (X2, X4, X5, X6, or X7 must be se- lected.)

, Pause during dialing for time set in register S8.

; Return to command mode after dialing. (Place at end of dial string.)

! Hook flash. Causes the modem to go on-hook for one-half second, then off-hook again.

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Contents User Guide Trademarks Record of RevisionsContents Index Introduction and Description MT5634ZBA-USB User Guide IntroductionProduct Description Universal Serial Bus USBIntroduction and Description What Is in Your Modem Package?MT5634ZBA-USB User Guide Quick Start You supply Safety WarningsWhat You Will Need We supplyQuick Start Assemble the ModemInstall the Software USB Connection Connect the Modem to Your SystemLine Connection Phone ConnectionTest Your Modem Select the ModemFeatures Data FeaturesWhat Can You Do with Your Modem? Telephone Line FaxRequired Equipment ComputerConnections Connecting to the Computer USBConnecting to the Telephone Line Line Connecting to a Telephone Set PhoneFront panel Front PanelMT5634ZBA-USB User Guide AT Commands, S-Registers and Result Codes AT Commands AT Command Summary Echo Online Data Characters Command DS=n Dial Stored Telephone NumberEcho Command Mode Characters Monitor Speaker VolumeCommand Sr=n Set Register Value Monitor Speaker ModeReturn Online to Data Mode Result Codes Enable/DisableModem Reset MT5634ZBA-USB User Guide Command Vn Result Code FormatCommand Xn Result Code Selection Command Yn Long Space DisconnectAsynchronous Communications Mode Load Factory SettingsCommand &Gn V.22bis Guard Tone Control Communications ModeSelect Stored Configuration for Hard Reset MT5634ZBA-USB User Guide Command &Tn V.54 Test CommandsDisplay Current Settings Command &Wn Store Current ConfigurationBreak Control Error Correction Mode SelectionModem Port Flow Control Data Buffer ControlProtocol Result Code Inactivity TimerCommand %Cn Data Compression Control Command %DCnAT Command ControlCommand%%%ATCRRemote Configuration Escape Sequence Command %En Fallback and Fall Forward ControlEnter Setup Password Command #S=x Store Setup PasswordRegisters Rates K56flex Rates S37S38 S89 S42S43 S48Terse Verbose Description Result CodesMT5634ZBA-USB User Guide Remote Configuration Changing the Setup Password Basic ProcedureSetup Changing the Remote Escape Character Remote ConfigurationMT5634ZBA-USB User Guide Troubleshooting Modem Does Not Respond to Commands None of the Indicators LightModem Dials But Cannot Connect TroubleshootingFax and Data Software Can’t Run at the Same Time Modem Cannot Connect When AnsweringModem Disconnects While Online Modem Doesn’t Work with Caller IDAppendixes FCC Regulations for Telephone Line Interconnection Appendix a Regulatory ComplianceIndustry Canada Class B StatementFAX Branding Statement Canadian Limitations NoticeNew Zealand Telecom Warning Notice European DirectivesInternational Modem Restrictions Appendix B Technical Specifications ITU-T V.32bis/V.32 Carrier Frequencies ConnectorsCarrier Frequencies ITU-TWeight DiagnosticsIndicators DimensionsIntroduction Appendix C Loopback TestsLocal Analog Loopback Test V.54 Loop Figure C-1. Local analog loopback test Test ProcedureAppendix C Loopback Tests Remote Digital Loopback Test V.54 LoopLocal Digital Loopback Test V.54 Loop Figure C-3. Local digital loopback test Test ProcedureService Appendix D Warranty, Service, and Technical SupportLimited Warranty Online Warranty RegistrationTo Download a File Technical SupportMulti-Tech BBS To Log on to the Multi-Tech BBSAbout the Internet About the Multi-Tech Fax-Back ServiceIndex Index MT5634ZBA-USB User Guide