Technics MT5634SMI-34 +VGT=level Set the Volume for Transmitted Voice Samples, Code Description

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Chapter 6 – Voice Commands

Command:

+VGT=<level>

Set the Volume for Transmitted Voice Samples

Result Codes:

OK if the modem accepts the command; ERROR if the parameter is out of range.

Description:

The +VGT= command causes the modem to set the volume control, either by attenuating or

 

amplifying the signal, for the transmitted voice samples. Values larger than 128 indicate a larger

 

gain than nominal, and values smaller than 128 indicate a gain smaller than nominal. The modem

 

may limit the receive gain to a narrower range, such as from 120 to 136, or from 120 to 128. The

 

value 0 is reserved for modem automatic volume control (AVC).

 

Warning: The modem will limit the transmit level over the Telco lines, regardless of the current

 

 

+VGT setting, to that permitted by CFR FCC Rules Part 68 – Subpart D.

Command:

+VIT=<timer>

Set DTE/DCE Inactivity Timer

Result Codes:

OK if the modem accepts the command; ERROR if the parameter is out of range.

Description:

The +VIT command sets the modem's initial value for the PC/Modem Inactivity Timer. The

 

permitted range is displayed by the +VIT=? command. The units are in 1.0 seconds. The PC can

 

disable the Inactivity Timer by using a value of 0 (+VIT=0).

 

The Inactivity Timer serves to ensure that the PC does not leave the modem in a state where it is

 

not accessible by voice-unaware software. The Inactivity Timer is activated when the PC selects

 

the voice fixed-rate. The timer expires if the flow of data from the PC to the modem stops (in both

 

Voice Command mode and Data mode) for a specified amount of time.

 

When this timer expires, the modem switches to Data mode with autobauding. By switching to

 

autobauding (and Data mode), the PC is allowed voice-unaware software to recover control of the

 

modem in the event of catastrophic failure that does not result in a modem power down. It is

 

recommended that the PC software leave the modem in autobauding (and Data mode), and use

 

the Inactivity Timer only as needed. Leaving the modem in autobauding is an extra measure to

 

prevent confusion from voice-unaware software accessing the modem in Voice mode at a fixed

 

PC/modem interface rate. You can use the H command to switch to autobauding and Data mode

 

automatically. In Voice mode, the modem does not allow the auto answer feature, since this feature

 

does not allow the PC to set the modem in Voice mode before answering the phone.

Command:

+VLS=<label>

Select Analog Source/Destination

Result Codes:

OK if command accepted; ERROR if the <label> parameter is out of range or if the modem cannot

 

service the <label> parameter requested.

Description:

The +VLS= command causes the modem to select one or more source and destination devices for

 

the analog data to be transmitted. The parameter <label> is used to identify each of the supported

 

analog source/destination hardware devices. Codes, called "primitives", are provided to describe

 

which voice I/O device(s) are components in a possible hardware configuration. The codes are

 

grouped to help define and label 16 common hardware configurations. Each code, except "L" and

 

"T" is followed by an ASCII 0 code (20 hex). Two codes can be concatenated to define a possible

 

analog source/destination hardware configuration.

 

Code

Description

 

L

Local phone (no number code)

 

T

Telco line

(no number code)

 

M0

Internal microphone

 

M1

External microphone

 

S0

Internal speaker (requires squelch on any microphone activity)

 

S1

External speaker (requires squelch on any microphone activity)

 

H0

External microphone and speaker combination (handset or headset)

 

Zn

Manufacturer specific device (n>0)

 

Mn

Manufacturer specific extension (n>1)

 

Sn

Manufacturer specific extension (n>1)

 

Hn

Manufacturer specific extension (n>0)

 

The list below contains 16 commonly used hardware configurations, and the label and codes used

 

to select each configuration.

 

<label>

Code(s)

Description

 

0

none

Modem on-hook. Local phone connected to Telco.

 

1

T

Modem off-hook, and connected to Telco. Local phone provided with power

 

 

 

to detect hook condition.

 

2

L

Modem off-hook. Local phone connected to modem.

SocketModem Global MT5634SMI Developer’s Guide

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Contents MT5634SMI-34 MT5634SMI-92 Revisions Table of Contents Multi-Tech’s Flash Programming Protocol Appendix C Country Configuration and Result Codes Index Product Description Specifications IntroductionProduct Description MT5634SMI Features MatrixTIA/EIA TR29.2 Technical Specifications and FeaturesStandard MT5634SMI-IT-92 Industrial Temperature 3.3V Build OptionPhysical Dimensions All Models Mechanical SpecificationsPin Configurations Pin # Signal Name I/O Type DescriptionDigital Ground Active High RDX status Tip Signal from TelcoRing Signal from Telco Active High DCD statusVCC PWR Pin # Signal Description NameDgnd GND INTElectrical Characteristics Electrical CharacteristicsTiming Requirements for Parallel Read Handling PrecautionsTiming Requirements Timing Requirements for Parallel WriteSocketModem Parallel Interface a Programmer’s Description SocketModem Parallel Interface Internal RegistersSocketModem Mimic MMM Operation Register Name Register Description Host Access Special Register Set Note *2 Time Out InterruptsRegister Functional Descriptions Internal RegistersTHR Transmit Holding Register TX Fifo IER Interrupt EnableBit Priority Interrupt Source Interrupt Reset Control RBR Receive Buffer RX FifoFCR Fifo Control LCR Line ControlMCR Modem Control MSR Modem Status LSR Line StatusBaud Rate Clock Divisor Decimal DLM Value HEX DLL Value HEX SCR ScratchDLL Divisor Latch LSByte DLM Divisor Latch MSByteAT Command Summary AT Commands, S-Registers Result CodesSet Register Value Modulation HandshakeDS= y Dial Stored Telephone Number AT CommandsEnter Key Dial string modifiersReturn Online to Data Mode Sr? Sr= n Set Register ValueXON/XOFF Pacing Control Zy=x Store Dialing Command \An Select Maximum MNP Block Size\Bn Transmit Break Data mode. The modem receives the break from the computer \Nn Error Correction Mode Selection\Tn Inactivity Timer \Kn Break Control\Xn XON/XOFF Pass-Through DCn AT Command Control$MBn Online BPS Speed $RPn Ring Priority vs. AT Command Priority$Dn DTR Dialing $EBn Asynchronous Word Length#CBNy=x Store Callback Password #CBDn Callback DelayCallback Failed Attempts Reset #CBIn Local Callback Inactivity TimerEscape AT Commands Modulation Possible rates bps1 Commands+MS= Modulation Selection Subparameters+PIG=n PCM Upstream Ignore +PCW=n Call Waiting Enable+PMH=n Modem on Hold Enable Mod value Valid maxrate values bps+PMHT=n Modem on Hold Timer +PMHF V.92 Modem Hook Flash+PMHR=n Modem on Hold Initiate +VCID=n Caller ID Selection +PQC=n Quick Connect Control#S=x Store Setup Password #Sx Enter Setup PasswordRegisters Register Unit Range Default DescriptionS48=7 S48=128 S38Terse Verbose Description Result Codes111 Voice Commands Voice Commands Commands That Change for Voice Mode SupportVoice S-Register Summary +FCLASS= mode Enter Select Modem Operating Mode Voice +V Commands SummaryVoice +V Commands Detail Command DescriptionTouch Tone Signals Digit Low frequency High frequency AT+FCLASS=? Enter Display Service Class Capabilities+FCLASS=8 Dtmf Detect Detect and Control Dtmf +FMR?Enter Report Version Level +VNH=hookEnter Automatic Hang-Up Control+FMI?Enter Report Manufacturers ID +FMM?Enter Report Product IDEnter Voice Receive State +VTS=string Produce Dtmf and Tone Generation in Voice Mode+VGR=gain Set the Gain for Received Voice Samples +VTS=? Report Frequency SupportAT+VTS=? Start Voice Transmission ProcessCode Description +VGT=level Set the Volume for Transmitted Voice Samples+VIT=timer Set DTE/DCE Inactivity Timer +VLS=label Select Analog Source/Destination+VRA=interval Set Ring Back Goes Away Timer +VRN=interval Set Ring Back Never Appeared Timer +VSD=sds,sdi Set Silence Detection Sensitivity+VSM=cml,vsr,scs,sel Select Voice Compression Method +VSM=? Report Voice Compression Method AT+VSM=?Identifier Description Enable Report Description +VDT=enable,report Control Tone Cadence ReportingLsltcq +VEM=? Report Event Reporting and Masking Capabilities +VEM=mask Event Reporting and MaskingAT+VBT=? Interface Configuration Commands+VPP=enable Enable or Disable Voice Mode Packet Protocol +VBT=? Report Modem Flow Control Assert and Deassert PointsVoice Mode Result Codes Flow Control+VPR=rate Select DTE/DCE Interface Rate Turn Off Autobaud Unsolicited Voice Mode Result Codes Valid Complex Event Report TagsTag Description Shielded Code Hex Event Report Description Voice Mode Shielded CodesAscii Command Response Sample SessionsSample Rate Selection and Suggested Compression Method AT+VLS=0 AT+VLS=4AT+VTX DLE ETXAT+VNH=1 AT+VLS=2AT+VRX DLE NULDTE/DCE Interface Rates Related ManualsAdditional Information Fax Commands Setup Remote Configuration Country Code ConfigurationRemote Configuration Basic ProcedureCountry AT Command Result Code Hexadecimal Decimal Country Code ConfigurationUsing the Global Wizard Utility Using AT CommandsFirmware Upgrade Procedure Upgrade OverviewUpgrade Steps Identify the Current Version of the Firmware Download the Upgrade FileInstall the Flash Wizard Extract the Firmware Upgrade .Hex FilesUpgrade the Modem’s Firmware Using the Flash WizardRestore Your Parameters Handshake Sequence Multi-Tech Systems, Inc. Flash Programming ProtocolProgramming the Modem Modem CommentsOther Supported Boot Code Commands Other Programming ConcernsATI4 End of File Record Char Pos Field Type Value Description Intel Hex FormatData Record Char Pos Field Type Value Description Example Extended Address Record in Intel FormatExample End of File in Intel Format Serial Test/Demo Board Components Appendix a Mechanical Details5V / 3.3V Jumper JP1 Serial Test/Demo Board Block DiagramParallel Test/Demo Board Components Address/COM Port/ IRQ Select Jumpers JP2 and JP3Operating Voltage Select Jumper JP4 Figure A-4. Parallel Test/Demo Board Block Diagram Parallel Test/Demo Board Block DiagramTelecom Approvals Safety and EMC ApprovalsHardware Considerations Regulatory Design ConsiderationsSafety 5V Tolerant Inputs for 3.3V Modules Industry Canada FCC Part 15 RegulationTelecom Labeling Requirements FCC Part 68 TelecomReregistration From FCC Part 68 Subpart D Conditions for RegistrationCanadian Limitations Notice Fax Branding StatementMultiple Listing EMC, Safety, and R&TTE Directive ComplianceIndustry Canada CS-03 International Modem RestrictionsSouth African Notice New Zealand Telecom Warning NoticeCountry Country Config. hex ATI9 Response Appendix C Country Configuration Result CodesAppendix C Country Configuration and Result Codes Appendix C Country Configuration and Result Codes Appendix C Country Configuration and Result Codes Page Index Index Index Index
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