Actiontec electronic V.90 ISA AT Commands for Testing and Debugging, Line-to-Line Loopback

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AT Commands for Testing and Debugging

The following commands are to be used for testing and debugging only and are not meant for general use.

&&C	Write to/Read from DSP Register

	Command	Effect

	AT&&C<loc>-	writes the value <val> to DSP register at location <loc>.
	,<val>	writes the value <val> to DSP register at location <loc>.
	,<val>

	AT&&C<loc>	reads from location <loc>.

&&L	Line-to-Line Loopback

This command provides a loopback for line-to-line.

&&R	Write to/Read from DSP RAM Location

	Command	Effect

	AT&&R<loc>,-	writes the value <val> to DSP RAM location <loc>
	<val>

	AT&&R<loc>	reads from location <loc>

&Tn	Self-Test Commands

This command allows the user to perform diagnostic tests on the modem. These tests can help to isolate problems when experiencing periodic data loss or random errors.

	Command	Effect

	&T0	Abort. Stops any test in progress.

		Local analog loop. This test verifies modem operation,
		as well as the connection between the modem and
	&T1	computer. Any data entered at the local DTE is
		modulated, then demodulated, and returned to the local
		DTE. To work properly, the modem must be off-line.

	&T3	Local digital loopback test.

		Remote digital loopback test. This test can verify the
		integrity of the local modem, the communications link,
	&T6	and the remote modem. Any data entered at the local
	&T6	DTE is sent to, and returned from, the remote modem.
		DTE is sent to, and returned from, the remote modem.
		To work properly, the modems must be on-line with
		error control disabled.

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Contents ISA Plug n Play Voice/Fax Modem Table of Contents Introduction Contacting Actiontec Customer SupportFor Windows 95/98 Installation Before You BeginFor Windows NT 4.0 Installation Installing The Modem Hardware InstallationInstalling The Modem Connecting Devices to the Modem Connecting DevicesConfiguring Windows Page Configuring Windows 95 OSR2 FinishPage Page Configuring Windows Page Page Page Page Configuring Windows NT Page Page Page Page Init String Installing Communications SoftwareFax TIA/EIA-578 for Class 1 Fax Voice AT&F&C1&D2W2Troubleshooting Windows 95/98More Info Panel Common Problems No Dialtone ErrorCommunications Software Does Not Work Appendix a Non Plug-N-Play Installations COM Ports and InterruptsJumper Settings Jumpers Set To Plug-N-Play default setting Hardware and Driver Installation Installing In DOS and WindowsRemove Page Answer Command Appendix B AT Command SetRepeat Last Command ATXnResult Codes Carrier ControlDnDial Last number dialedOnline Data Character Echo Command Echo CommandHook Control This command sets speaker volume to low, medium, or high Monitor Speaker VolumeRequest ID Information This command turns the speaker on or off Modulation HandshakeSelect Pulse Dialing Return On-line to Data ModeResult Code Control DCE Response Format Result Code OptionExtended Result Codes Dial Tone DetectLong Space Disconnect Long space disconnect is always disabledBusy Tone Detect Recall Stored ProfileThis modem always auto retrains Auto RetrainData Carrier Detect DCD Control Load Factory Settings DTR ControlAuxiliary Relay option Local Flow Control SelectionThis Command is effective only for use in Japan Asynchronous Communications ModePulse Dial Make-to-Break Ratio Selection This command selects DSR action Data Set Ready DSR OptionThis command is used to display the active profiles Below is an example of a possible outputSSE \An Zn=x\Bn Adjust Bits/s Rate Control Modem Port Flow Control\Kn \Nn Error Control Mode Selection = 0, 1, 2, 3, 4, 5 \Vn Protocol Result Code \Tn Inactivity Timer\Xn XON/XOFF Pass Through Data Calling Tone Enable/Disable Data CompressionView Numbers in Blacklist Write to/Read from DSP Register AT Commands for Testing and DebuggingSelf-Test Commands Line-to-Line LoopbackATI11 Registers Reference TypeRange −127, Ascii decimal Default Carriage return Units Range 0−255 Default UnitsringsRange 0−255 Default UnitsASCII Range −127, Ascii decimal Default Line feed UnitsConnection Completion Time-Out Range −32 Default Backspace UnitsRange Default Unitsseconds Comma Dial Modifier TimeS12 Escape Guard Time S10S11 Dtmf Dialing Speed S14 General Bit Mapped Options StatusS21 S24 Timer to Control Sleep ModeS22 S32 S28 Modulation Enable/DisableS30 Inactivity Timer S33S36 S37 Dial Line Rate defaultS38 56K Dial Line Rate default ConnectionS43 Auto Mode default 1, range S42 Auto Rate default 1, rangeS48 Lapm Error Control and Feature Negotiation default S91 S89 Timer to Control Sleep ModeS90 S92S109K56flex and V.90 Selection default No CarrierResult Code Appendix B Communications Regulations Declaration of ConformityCanadian Department of Communications Cdoc