Intel 537EX manual Intel Confidential

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Data Mode AT COMMANDS

In Data mode, the 56K chipsets can transmit up to 48,000 bps (V.92 mode) or 33,600 bps (V.90 mode) and receive up to 53,333 bps. Note that the chipsets are capable of achieving 56,000 bps, but power limitations by the FCC limit actual speeds to 53,333 bps. The 56K receive data rates can be achieved only in connections with equipment-compatible ISPs (Internet Service Providers). In V.92 mode, the 536EX supports three new features: Quick Connect, Modem-on-Hold and Pulse Code Modulation (PCM) Upstream.

The Quick Connect (QC) feature reduces the time it takes to make a connection to your service provider. The modem retains information of the line conditions from your previous connection and uses this information to bypass parts of the training sequence. As a result, this provides faster connections. Normal V.90 connections take about 25–30 seconds. With V.92 Quick Connect, your connect times can be up to 50% faster.

The V.92 Quick Connect feature is controlled by the +PSS and +PQC commands. The +PQC command enables and disables the shorten phase 1 and or phase 2 startup procedures. The +PSS command forces either a short or full startup procedure on the next and subsequent connections. To enable the modem for V.92 Quick Connect, set +PSS=0 or 1 and +PQC=0. Refer to Table 5 for the detailed description of these commands.

The Modem-on-Hold (MOH) feature allows you to receive an incoming voice call and stay connected to the Internet and then return online after your conversation without having to re-dial. This is very convenient where the same phone line is used for voice calls and data connections. To receive an incoming call as described above requires that you have the Call-Waiting service from your telephone company. In addition, the Caller ID service from your telephone company is recommended but not required for MOH. This feature allows you to determine who is calling. The “hold” time for your incoming call is define by your service provide. The MOH feature also allows you put you data connection on hold and initiate a voice call and then return online after completing your voice conversation. These two scenarios are described in detail in Figure 4 and Figure 5.

536EX Chipset Developer’s Manual

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Intel Confidential

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Contents Developer’s Manual 537EX ChipsetIntel Confidential Contents Figures Tables Date Revision Description Revision History001 Initial release Controllerless Modem Driver Overview IntroductionWindows 95 and Windows Intelsdb.VXD V.90/V.92 and V.34 Data ModesTapi UnimodemModem Connection Overview DCE-to-ISP Data Rates for V.90 Mode AT Commands OverviewDTE-to-DCE Data Rates for Each Mode DCE-to-DCE Data Rates for Each ModeNumeric Text Sending CommandsDelayed Call DTE-Modem Data Rate Response CodesDialing digits Command FunctionAT Escape Sequences Dial ModifierCommand Function Default Range Reported By &Vn Data Mode Command SummaryIntel Confidential Intel Confidential Intel Confidential +ETBM +EB+ESA +ESR44/V.42/V.42 bis MNP Command Summary Processes flow control characters and passes to local Fax Class 1 Command Summary Fax Identity Command SummaryVoice DTE→DCE Character Pairs IS-101 Voice Command SummaryResponse Hex Code Function ESC Voice DTE →DCE Character PairsVoice DTE←DCE Character Pairs DELAscii Register Function Default Range Units Reported by &VnDial Modifiers Register SummaryRegister Function Default Range Units Modem Responses and Command Echo En, Vn, Xn, Wn, Qn Using AT Commands to Access the S-Registers Sn?, Sn=x, ?Modem Setup Host Modem Response Command Data Reporting Wn Mapping Disable EnableDTE Resets and then configures the modem to Nvram user profile Establishing a Modem Connection A, D, DS = n, S0 AT Commands Product InformationProduct Identification Information Hanging Up Hn, S10, Zn, &D2 Online Command Mode Escape Codes, OnModem-to-Modem Connection Data Rates Intel Confidential Modem-on-Hold Incoming Voice Call in Data Mode Modem-on-Hold Initiating a Voice Call in Data Mode Intel Confidential Carrier Description Supported Modulation TypesLocal Analog Loopback AT&T1 Diagnostic Testing S18, &TnLocal Modem or Test Modem Local Analog Loopback With Self-Test AT&T8Time-Independent Escape Sequence AT Escape SequencesLicensing Requirements for Hayes Escape Sequence Example Command Default Description Data Mode Command DescriptionsHayes* Escape Sequence Echo enabled Previously stored in the Nvram with the AT&Zn=x commandHost in either online or off-line command mode Echo disabledDTE ATI2Sn=x Numeric form CommandModem dials a telephone number touch tone dialing Numeric or verbose formDCD or Rlsd signal DisconnectingSubsequent commands to be ignored Resets the modem and recalls user profileTelephone Numbers AT&V0Active Profile Stored Profile= 0-9 a B C D # * T P R W @ S-register configurations into the Nvram user profile ‘n’Command to see the stored telephone number Select profileIndication Definition Command Default+EB 12/V.34 CRC generation and checking disabledNrzi encoding and decoding disabled Secondary channel operation, and vice versa+ETBM +ESR+ILRR=m +GMR+GSN +IFCIf +MS = ,0,, no alternative modulations will be available +MS command description+MA? will display a list of enabled alternative modulations = carrier,carrier,…carrier+MS=m See ‘m’ Carrier DescriptionBELL103 BELL212+PMHR +PHSW=+PMHF Value DescriptionDisable short Phase 1 and Short Phase Conjunction with the +PSS commandEnable Short Phase 1 and Short Phase Enable Short PhaseOperating Modes Mode Features+ES=1, 0 +ES=4, 4 +ES=3, 0 +ES=3, 2 44/V.42/V.42 bis and MNP Data Modem Command Descriptions+ES Settings Answer Modem Resulting +ES Connection Types\Bn \Kn Max string +DR=mDirection +DS=m+EFCS=m 3768+ER Lapm Display messages when +ER =Decimal value and the format is as follows +ER=m+ES=m Setting is ignored if origrqst=6Control during non-error control operation Non-error control operation+FMFR?/+FMI Fax Identity CommandsFax Class 1 Commands Fax Identity Command DescriptionsValue Modulation Speed bps Mod Selection TableClass 1 DTE-Generated Hdlc Frame Information AT+FTH=mod 30 Hdlc Frame Format+FCLASS? Fax Mode Command Descriptions+FCLASS +FRS=m +FRH=m+FTH=m IS-101 Voice Mode AT Commands Dtmf Detection Reporting Voice Mode Command DescriptionsRelay Control +FLO=m +VDR=m See ‘m’ Enable report Function+VEM=m See ‘m’ Defaults = ‘C’, BB860980, BFE63883, BB863EE0Caller ID report Command Reserved Distinctive ringing All Event DescriptionEX Value BIT Value Event EIGHT-DIGIT HEX Code B B 8 6 3 E EHEX Digit Location 128 Nominal transmit level Local telephone, or speaker+VIP Label Preassigned Voice I/O Labels+VLS=m Relay/Playback Control Voice I/O Primitive CodesPrimitive Code Description +VSD=m See ‘m’ +VRXRange 4800, 7200, 8000, and 11025 samples/second +VSM=? command to obtain supported sampling rates141 AD3 3-bit Adaptive differential pulse code modulation +VSM=mCompression CmlSerial Hard DiskRange 5-255 units of 0.01 seconds Factory default is ‘0’100 Default value 1 second 100This sends a 500 ms period of silence Dual tones may be sent using the following format+VTS=m None Specified by +VTD=mCommand Default Description Register Command Descriptions S10 Escape sequences Range Seconds Default 0 secondsS16 S30 S21S22 118 S25Inactive state when Modem exits sleep mode whenever the host reads or writes toModem or when a ring signal is detected Sleep mode is disabled by setting S33 to ‘0’Tag Description Caller ID Tags for Formatted ReportingRing Uart Emulation in Intelsdb.VxD Uart Emulation in the Controllerless ModemTHR UartRBR Parallel Host Interface Uart Register Bit Assignments Scratch Register SCR Uart Register DefinitionsModem Status Register MSR Stack Bit Framing errorOE Overrun Error-Not supported Line Status Register LSRLine Control Register LCR IER Interrupt Enable registerProcedure is as follows Modem Control Register MCRBit Fifo Control Register FCRInterrupt Control Functions Interrupt Identity Register IIRID1 ID0 Dlab = Interrupt Enable Register IERID bit 2 for Fifo mode Transmitter Holding Register THRData Rate Divisor Number Divisor Latch Hex Receiver Buffer Register RBRDivisor Latch Registers DLM and DLL Programmable Data Rates102 Fifo Interrupt Mode OperationFifo Polled Mode Operation 16C550A Uart Fifo Operation536EX Chipset Developer’s Manual 103