Multi-Tech Systems MT2456SMI22 manual S16 Test Mode Bit Mapped Options Status, S19 Reserved

Page 39

Chapter 4 - V.22bis Commands

S16 - Test Mode Bit Mapped Options Status

S16 indicates the test in progress status. Default: 0

Bit 0 Local analog loopback. 0 = Disabled. (Default)

1 = Enabled. (&T1) Bit 1 Not used

Bit 2 Local digital loopback 0 = Disabled (default)

1 = Enabled (&T3)

Bit 3 Remote digital loopback (RDL) status 0 = Modem not in RDL

1 = RDL in progress Bit 4 RDL requested (AT&T6)

0 = RDL not requested (default)

1 = RDL requested (&T6) Bit 5 RDL with self test

0 = Disabled (default)

1 = Enabled (&T7)

Bit 6 Local analog loopback (LAL) with self test 0 = Disabled (default)

1 = Enable (&T8) Bit 7 --- Not used

S19 - Reserved

S19 is supported for backwards compatibility only. No value can be written. Responds with default value. Range: None

Default: 0

S20 - Reserved

S20 is supported for backwards compatibility only. No value can be written. Responds with default value. Range: None

Default: 0

S21 - V.24/General Bit Mapped Options Status

S21 indicates the status of command options. Default: 52 (34h) (00110100b)

Bits 0 - 1 Telephone Jack Control (&Jn). 0 = &J0 selected. (Default)

1 = &J1 selected.

2 = &J2 selected.

3 = &J3 selected.

Bit 2 CTS behavior (&Rn).

0 = CTS tracks RTS (&R0).

1 = CTS always on (&R1). (Default) Bits 3-4 DTR behavior (&Dn).

0 = &D0 selected.

1 = &D1 selected

2 = &D2 selected. (Default)

3 = &D3 selected.

Bit 5 RLSD behavior (&Cn). 0 = &C0 selected.

1 = &C1 selected. (Default) Bit 6 DSR behavior (&Sn).

0 = &S0 selected. (Default)

1 = &S1 selected.

Bit 7 Long space disconnect (Yn). 0 = Y0. (Default)

1 = Y1.

Multi-Tech Systems, Inc. MT2456SMI-22 SocketModem Developer’s Guide

39

Image 39

Contents SocketModem Country By Email By Phone PN S000281A, Version aContents Product Description Product Description SpecificationsSpeed Conversion Technical SpecificationsMaximum Component Height Physical DimensionsPin Descriptions Pin Configurations3V DC Power Outputs Output High Output Low Handling Precautions3V and 5V Serial SocketModem Input High Input LowModulation Control Commands Generic Modem Control CommandsDTE/DCE Commands Call Control CommandsLine Side Device Commands Error Control and Data Compression CommandsSynchronous Access Mode Commands Fast Connect Command+VCID Caller ID CID 22bis Generic Modem Control CommandsSoft Reset and Restore Profile Operating ModeIdentification +GCI Country of InstallationLoad to Internal RAM Restore Factory Configuration ProfileProcedure Local Analog Loopback TestResult Code Form 22bis DTE/DCE-Modem Interface commandsCommand Echo Quiet Result Codes ControlExtended Result Codes Connect Ring No Carrier Error No Dial Tone Busy No AnswerDTR Option Short Form Long Form Value in ATXn CommandRlsd Option Result Codes OK 0 orRTS/CTS Option \G Modem-to-Modem Flow Control XON/XOFF+IFC DTE-Modem Local Flow Control +IBC In Band Commands Entering and Exiting In Band Active StateEM Shielding Data Command Hex Codes Description Supported DTE-to-DCE Commands Supported DCE-to-DTE CommandsBand Processing of AT Commands 22bis Call Control Commands DialDial Modifiers Speaker Volume Set Tone Dial DefaultResult Code Set Pulse Dial Default Return to On-Line Data ModeSelect Pulse Dial Make/Break Ratio Display Current Configuration and Stored ProfilesMSpeaker Control Select Guard ToneDisplay Blacklisted Numbers \V Single Line Connect Message EnableReport Line Signal Level Report Line Signal QualitySyntax *D Example Display Delayed NumbersNO. Phone Number -DELAY Behavior in Data Mode+PCW Call Waiting Enable Reporting Selected Values+VDR Distinctive Ring Syntax 22bis Modulation Control CommandsTable of +MS Command Supported Rates +MS Modulation SelectionITU-T or Bell Enable/Disable Line Quality Monitor and Auto-Retrain\B Transmit Break to Remote 22bis Error Control and Data Compression Commands+ESR Selective Repeat +ETBM Call Termination Buffer ManagementBreak Control Result Codes OK 0 to 5 Error Otherwise+ESA? 22bis Synchronous Access Mode Commands+ESA Configure Synchronous Access Submode Reporting Selected Options+ITF? Transmit Flow Control Thresholds22bis FastConnect Command $F Fast Connect ControlSyntax $Fn Defined Values Response 22bis Line Side Device CommandsThreshold Adjustments for Telephony Extension TRV Tip and Ring Voltage MeasurementRead/Write S-Parameter 22bis S-ParametersSummary of S-Parameter Defaults Register Function Range/Units DefaultAscii S3 Carriage Return Character S0 Number of Rings to Auto-AnswerS1 Ring Counter S2 Escape CharacterS9 Carrier Detect Response Time S8 Pause Time For Dial DelayS10 Lost Carrier To Hang Up Delay S12 Escape Prompt Delay EPDS21 V.24/General Bit Mapped Options Status S16 Test Mode Bit Mapped Options StatusS19 Reserved S20 ReservedS22 Speaker/Results Bit Mapped Options Status S24 Sleep Inactivity TimerS25 Delay To DTR Off S26 RTS to CTS DelayS29 Flash Dial Modifier Time S30 Disconnect Inactivity TimerS27 Bit Mapped Options Status S28 Bit Mapped Options StatusS39 Flow Control Bit Mapped Options Status S38 Delay Before Forced Hang UpS36 Lapm Failure Control S37 Desired Line Connection SpeedS86 Call Failure Reason Code S41 General Bit Mapped Options StatusS48 V.42 Negotiation Action S82 Break Handling OptionsS95 Extended Result Codes Control S91 Pstn Transmit Attenuation LevelConnect 22bis Result CodesTable of Result Code Definitions Code Message Meaning75TX/1200RX Is enabled Figure A-1. Serial Test/Demo Board Block Diagram Block DiagramMore planned Product Safety and EMC ApprovalsCountry Certifications Country Country CodeHardware Considerations Regulatory Design ConsiderationsSafety Qty Name Description SocketModem PlacementCompliance Multi-Tech Systems, Inc. ComplianceTelecom Requirements for the United States Label Physical Characteristics Label Content and FormatTelecommunications Regulations for Canada Labeling Continuity and ChangesOther Label Requirements Industry Canada New Zealand Telecom Warning NoticeEMC, Safety, and R&TTE Directive Compliance International Modem RestrictionsSouth African Statement Index Index