Intel 536EX manual Intel Confidential, IS-101Voice Mode AT Commands, m= , , ,

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m= <cml>, <vsr>, <scs>, <sel>

IS-101 Voice Mode AT Commands

Table 25. Voice Mode Command Descriptions (Continued)

Command Default

Description

Compression Method Selection: This command contains four parameters that specify the voice compression method, voice sampling rate, silence compression sensitivity, and the degree of silence expansion. The DCE can support different capabilities for each compression method.

m= <cml>, <vsr>, <scs>, <sel>

Defaults: m = 140, 8000, 0, 0

<cml> Compression Method: This parameter selects a voice compression method. The DTE can obtain the label and a string constant identifier by using the +VSM? command.

Range: 0–2, 128, 129, 132, 140, 141

0LIN1: 8-bit Linear PCM (pulse code modulation) sampling using twos-complement signed numbers

1LIN2: 16-bit Linear PCM sampling using unsigned numbers

2AD4: 4-bit Adaptive differential pulse code modulation

128LIN1: 8-bit Linear PCM (pulse code modulation) sampling using twos-complement signed numbers

129LIN2: 16-bit Linear PCM sampling using unsigned numbers

 

 

132

AD4: 4-bit Adaptive differential pulse code modulation

 

 

140*

CL1: 8-bit Intel A-law

 

manufac-

141

AD3: 3-bit Adaptive differential pulse code modulation

 

<vsr> Sampling Rate: This parameter selects the DCE voice sampling/digitizing rate for the voice

+VSM=m

turer-

signal. The supported sampling rates are dependent on the compression schemes used. Use the

 

specified

 

+VSM=? command to obtain supported sampling rates.

 

 

 

 

Range: 4800, 7200, 8000, and 11025 samples/second

 

 

4800

Default used by previous Intel modems

 

 

7200

 

 

 

8000*

Used by some bulletin boards

 

 

9600

 

 

 

11025

Used by many Windows* WAV files

<scs> Silence Sensitivity: The function of this parameter depends on whether the DTE is transmitting or receiving in voice mode. The DTE can modify the silence expansion using the <sel> parameter. When transmitting voice, a non-zero value of this parameter informs the DCE that the data stream was recorded with silence compression.

Transmission: Range: 0

0*Disabled

When receiving voice, this parameter changes the level of noise that the DCE treats as silence. A higher ‘n’ number raises the threshold of noise detection.

Reception: Range: 0

 

0*

Disables DCE silence compression

increments of 1

Raises noise detection threshold

NOTE: An asterisk (*) denotes the factory-default setting.

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536EX Chipset Developer’s Manual

Intel Confidential

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Contents January 536EX ChipsetDeveloper’s Manual Intel Confidential 536EX Chipset Developer’s ManualContents ContentsFigures Tables Revision History DateRevision DescriptionIntroduction 1.1Controllerless Modem Driver OverviewFigure 1. WDM Driver Block Diagram 1.1.2Windows 95 and WindowsUser applications Kernel - ring0Figure 2. VxD Mini Port Driver Block Diagram 1.2V.90/V.92 and V.34 Data Modes1.3Modem Connection Overview Table 3. DCE-to-ISPData Rates for V.90 Mode Table 1. DTE-to-DCEData Rates for Each ModeTable 2. DCE-to-DCEData Rates for Each Mode 1.4.1Sending Commands Table 4. DTE-ModemData Rate Response Codes1.4.2AT Escape Sequences 1.4.3Dial ModifierTable 5. Data Mode Command Summary AT Command Summary TablesAT Command Summary Tables Table 5. Data Mode Command Summary Continued Result code type AT Command Summary Tables Generate data mode calling tone Table 6. V.44/V.42/V.42 bis MNP Command Summary AT Command Summary Tables Table 7. Fax Identity Command Summary Table 8. Fax Class 1 Command SummaryTable 9. IS-101Voice Command Summary Table 10. Voice DTE→DCE Character PairsTable 10. Voice DTE→DCE Character Pairs Continued Table 11. Voice DTE←DCE Character PairsTable 13. S-RegisterSummary Table 11. Voice DTE←DCE Character Pairs ContinuedTable 12. Dial Modifiers Table 13. S-RegisterSummary Continued Data Mode AT COMMANDS Data Mode AT COMMANDSTable 14. Data Reporting Wn Mapping Figure 3. Example of a Remote ConnectionATW0 •ATW2Examples +FMFR?, +FMDL?, +FREV? 3.8Modem-to-ModemConnection Data Rates 3.6Online Command Mode Escape Codes, On3.7Hanging Up Hn, S10, Zn, &D2 536EX Chipset Developer’s Manual +PMH=0 +PCW=0+VCID=1 +++AT536EX Chipset Developer’s Manual hook to connect the call. Now you can answer the phone and talk. After completing your voice conversation, the modem will issue another +PMHF and ATO command to initiate a Quick Connect. If the server rejects the request to go on hold, the user can stay on line ATO command issued or disconnect from his initial data connection ATH command issued Table 16. Supported Modulation Types 3.9Diagnostic Testing S18, &Tn 3.9.1Local Analog Loopback AT&T13.9.2Local Analog Loopback With Self-TestAT&T8 LOCAL MODEMFigure 6. Local Analog Loopback Test Local Modem or Test Modem3.10.1Time-IndependentEscape Sequence Licensing Requirements for Hayes Escape Sequencechar1 = char2 = char3 = escape character S2 <char1><char2><char3><AT command><contents of S3>Format Table 18. Data Mode Command Descriptions 3.10.2Hayes* Escape Sequence536EX Chipset Developer’s Manual Sn=x 536EX Chipset Developer’s Manual Data Mode AT COMMANDSIntel Confidential Data Mode AT COMMANDS AT&V0 536EX Chipset Developer’s Manual Definition Command DefaultIndication 1, 0, 536EX Chipset Developer’s Manual 1, 1, +ESR+ETBM +GMR +GSN+IFC +ILRR=mData Mode AT COMMANDS <carrier> Description+MS=m see ‘m’+PHSW= +PMHF<value> +PMHR536EX Chipset Developer’s Manual Table 19. Operating Modes Error Correction and Data Compression4Error Correction and Data Compression Table 20. Resulting +ES Connection Types NOTES536EX Chipset Developer’s Manual Error Correction and Data CompressionIntel Confidential 536EX Chipset Developer’s Manual +DR=m direction+DS=m <max string>3768 +EFCS=m+ER=m +ES=m Fax Class 1 AT Commands 5.1Fax Identity Commands5.2Fax Class 1 Commands Fax Class 1 AT CommandsTable 23. <mod> Selection Table Figure 8. T.30 HDLC Frame Format Table 24. Fax Mode Command Descriptions Table 24. Fax Mode Command Descriptions Continued +FRH=mRefer to Table 23 on page shown in Table 23 on page+FTH=m IS-101Voice Mode AT Commands IS-101Voice Mode AT Commands6.2Relay Control Table 25. Voice Mode Command Descriptions6.1DTMF Detection Reporting +FLO=m m = <deassert>, <assert>m=<enable>, <report> +VDR=mm = <mask> +VEM=mIntel Confidential +VIP Preassigned Voice I/O Labels +VLS=mVoice I/O Primitive Codes Relay/Playback Control: cont+VSD=m +VRXm = <sds>, <sdi> Transmission: Range: m= <cml>, <vsr>, <scs>, <sel>+VSM=m Compression Method Selection: cont +VSP=mfactory default is ‘0’ +VTS=m noneCommand DefaultDescription DTMF and Tone Generation: contS-Registers S-RegistersTable 26. S-RegisterCommand Descriptions 536EX Chipset Developer’s Manual Intel ConfidentialS-Registers 536EX Chipset Developer’s Manual Intel ConfidentialS-Registers 536EX Chipset Developer’s Manual Intel ConfidentialS-Registers 536EX Chipset Developer’s Manual Table 27. Caller ID Tags for Formatted Reporting Caller IDCaller ID RING DATE = TIME = NMBR = NAME = DOE JOHN MESG = RING RING<DLE> R NMBR =Parallel Host Interface 16C450/16C550A UARTParallel Host Interface 16C450/16C550A UART Figure 11. UART Emulation in Intelsdb.VxDUART Transmitter Flow Diagram UART Receiver Flow DiagramREGISTER BIT NUMBERADDRESS NAME9.2.1Scratch Register SCR 9.2.2Modem Status Register MSRFigure 14. Scratch Register SCR Figure 15. Modem Status Register MSR9.2.3Line Status Register LSR Figure 16. Line Status Register LSR9.2.4Modem Control Register MCR 9.2.5Line Control Register LCRFigure 17. Modem Control Register MCR Figure 18. Line Control Register LCRFigure 19. FIFO Control Register FCR 9.2.6FIFO Control Register FCRRegister Table 28. Interrupt Control Functions 9.2.7Interrupt Identity Register IIRFigure 20. Interrupt Identity Register IIR 9.2.8Interrupt Enable Register IER Figure 21. Interrupt Enable Register IER9.2.9Transmitter Holding Register THR Figure 22. Transmitter Holding Register THR9.2.10Receiver Buffer Register RBR 9.2.11Divisor Latch Registers DLM and DLLFigure 23. Receiver Buffer Register RBR Figure 24. Divisor Latch Registers DLM and DLL9.3.2FIFO Polled Mode Operation 9.316C550A UART FIFO Operation9.3.1FIFO Interrupt Mode Operation 536EX Chipset Developer’s Manual Intel ConfidentialParallel Host Interface 16C450/16C550A UART
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