Intel 537EX manual Online Command Mode Escape Codes, On, Hanging Up Hn, S10, Zn, &D2

Page 30

Data Mode AT COMMANDS

ATDT 9,444-5555Automatically dials the telephone number with DTMF tones. After dialing a ‘9’, the comma (,) causes the modem to pause two seconds before dialing the rest of the telephone number.

modem 1: ATD; When establishing a manual-to-manual connection, the designated

modem 2: ATA originating modem should receive the ATD command from its DTE just before the designated answering modem receives the ATA command from its DTE. It is important that the time between the ATD and ATA commands is less than 2 seconds.

AT-C1DT 123 Causes the modem to dial the telephone number 123 and immediately start sending a data calling tone. Calling tone can then be detected by the remote voice mail system. After detecting the calling tone, the remote system can change to data mode and start the data modem connection handshake.

3.6Online Command Mode [Escape Codes, On]

After establishing a connection with a remote modem, the DTE sends the appropriate escape sequence to the DCE, which causes the DCE to enter the online command mode. The online command mode is used to send AT commands to the DCE while the DCE is still connected to the remote modem. The supported escape sequences are described in Section 3.10, “AT Escape Sequences” on page 38. To re-enter the online data mode, use the ATOn command.

Example:

1

second +++

Hayes Escape Sequence. Guard times (in which the DTE does not send

1

second

data to the DCE) of 1 second are needed before and after the three

 

 

escape characters ‘+’.

+++AT<CR>

TIES (Time Independent Escape Sequence).

ATO

Causes the modem to re-enter online data mode.

3.7Hanging Up [Hn, S10, Zn, &D2]

A modem connection terminates when the modem hangs up or when the remote modem transmit carrier is off longer than the duration specified in S-register S10. To hang up, the DTE typically sends an escape code sequence that causes the DCE to enter online command mode. Upon receiving an ‘OK’ message, the DTE sends either ATH or ATZn to the DCE. When the AT&D2 command is used, the modem goes on-hook (hangs up) after an on-to-off transition of the DTR occurs.

Note: The ATZn command causes the DCE to hang up and re-initialize itself to the user profile specified by ‘n’.

3.8Modem-to-Modem Connection Data Rates

The data rates differ for each data mode selected. The 536EX chipsets either default to V.90 or V.92 mode depending on the driver version. For non-ISP connections, the chipsets fall back to V.34 mode. The modem defaults to whatever mode is issued by the +MS=m command (see the supported modulation types on Table 16 on page 35).

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536EX Chipset Developer’s Manual

Intel Confidential

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Contents 537EX Chipset Developer’s ManualIntel Confidential Contents Figures Tables Revision History Date Revision Description001 Initial release Introduction Controllerless Modem Driver OverviewWindows 95 and Windows Unimodem V.90/V.92 and V.34 Data ModesTapi Intelsdb.VXDModem Connection Overview DCE-to-DCE Data Rates for Each Mode AT Commands OverviewDTE-to-DCE Data Rates for Each Mode DCE-to-ISP Data Rates for V.90 ModeDTE-Modem Data Rate Response Codes Sending CommandsDelayed Call Numeric TextDial Modifier Command FunctionAT Escape Sequences Dialing digitsData Mode Command Summary Command Function Default Range Reported By &VnIntel Confidential Intel Confidential Intel Confidential +ESR +EB+ESA +ETBM44/V.42/V.42 bis MNP Command Summary Processes flow control characters and passes to local Fax Identity Command Summary Fax Class 1 Command SummaryIS-101 Voice Command Summary Voice DTE→DCE Character PairsResponse Hex Code Function DEL Voice DTE →DCE Character PairsVoice DTE←DCE Character Pairs ESCRegister Summary Register Function Default Range Units Reported by &VnDial Modifiers AsciiRegister Function Default Range Units Using AT Commands to Access the S-Registers Sn?, Sn=x, ? Modem Responses and Command Echo En, Vn, Xn, Wn, QnModem Setup Host Modem Response Command Disable Enable Data Reporting Wn Mapping DTE Resets and then configures the modem to Nvram user profile AT Commands Product Information Establishing a Modem Connection A, D, DS = n, S0Product Identification Information Online Command Mode Escape Codes, On Hanging Up Hn, S10, Zn, &D2Modem-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 Supported Modulation Types Carrier DescriptionDiagnostic Testing S18, &Tn Local Analog Loopback AT&T1Local Analog Loopback With Self-Test AT&T8 Local Modem or Test ModemAT Escape Sequences Time-Independent Escape SequenceLicensing Requirements for Hayes Escape Sequence Example Data Mode Command Descriptions Command Default DescriptionHayes* Escape Sequence Echo disabled Previously stored in the Nvram with the AT&Zn=x commandHost in either online or off-line command mode Echo enabledATI2 DTESn=x Numeric or verbose form CommandModem dials a telephone number touch tone dialing Numeric formResets the modem and recalls user profile DisconnectingSubsequent commands to be ignored DCD or Rlsd signalStored Profile AT&V0Active Profile Telephone NumbersSelect profile S-register configurations into the Nvram user profile ‘n’Command to see the stored telephone number = 0-9 a B C D # * T P R W @Command Default Indication Definition+EB Secondary channel operation, and vice versa CRC generation and checking disabledNrzi encoding and decoding disabled 12/V.34+ESR +ETBM+IFC +GMR+GSN +ILRR=m= carrier,carrier,…carrier +MS command description+MA? will display a list of enabled alternative modulations If +MS = ,0,, no alternative modulations will be availableBELL212 Carrier DescriptionBELL103 +MS=m See ‘m’Value Description +PHSW=+PMHF +PMHREnable Short Phase Conjunction with the +PSS commandEnable Short Phase 1 and Short Phase Disable short Phase 1 and Short PhaseMode Features Operating ModesResulting +ES Connection Types 44/V.42/V.42 bis and MNP Data Modem Command Descriptions+ES Settings Answer Modem +ES=1, 0 +ES=4, 4 +ES=3, 0 +ES=3, 2\Bn \Kn +DS=m +DR=mDirection Max string3768 +EFCS=m+ER=m Display messages when +ER =Decimal value and the format is as follows +ER LapmNon-error control operation Setting is ignored if origrqst=6Control during non-error control operation +ES=mFax Identity Command Descriptions Fax Identity CommandsFax Class 1 Commands +FMFR?/+FMIMod Selection Table Value Modulation Speed bps30 Hdlc Frame Format Class 1 DTE-Generated Hdlc Frame Information AT+FTH=modFax Mode Command Descriptions +FCLASS?+FCLASS +FRH=m +FRS=m+FTH=m IS-101 Voice Mode AT Commands Voice Mode Command Descriptions Dtmf Detection ReportingRelay Control +FLO=m Enable report Function +VDR=m See ‘m’Event Description Defaults = ‘C’, BB860980, BFE63883, BB863EE0Caller ID report Command Reserved Distinctive ringing All +VEM=m See ‘m’EIGHT-DIGIT HEX Code B B 8 6 3 E E EX Value BIT Value EventHEX Digit Location Local telephone, or speaker 128 Nominal transmit level+VIP Preassigned Voice I/O Labels Label+VLS=m Voice I/O Primitive Codes Relay/Playback ControlPrimitive Code Description +VRX +VSD=m See ‘m’+VSM=m +VSM=? command to obtain supported sampling rates141 AD3 3-bit Adaptive differential pulse code modulation Range 4800, 7200, 8000, and 11025 samples/secondHard Disk CmlSerial Compression100 Factory default is ‘0’100 Default value 1 second Range 5-255 units of 0.01 secondsSpecified by +VTD=m Dual tones may be sent using the following format+VTS=m None This sends a 500 ms period of silenceCommand Default Description Register Command Descriptions S10 Range Seconds Default 0 seconds Escape sequencesS16 S25 S21S22 118 S30Sleep mode is disabled by setting S33 to ‘0’ Modem exits sleep mode whenever the host reads or writes toModem or when a ring signal is detected Inactive state whenCaller ID Tags for Formatted Reporting Tag DescriptionRing Uart Emulation in the Controllerless Modem Uart Emulation in Intelsdb.VxDUart THRRBR Parallel Host Interface Uart Register Bit Assignments Uart Register Definitions Scratch Register SCRModem Status Register MSR Line Status Register LSR Bit Framing errorOE Overrun Error-Not supported StackModem Control Register MCR IER Interrupt Enable registerProcedure is as follows Line Control Register LCRFifo Control Register FCR BitInterrupt Identity Register IIR Interrupt Control FunctionsID1 ID0 Transmitter Holding Register THR Interrupt Enable Register IERID bit 2 for Fifo mode Dlab =Programmable Data Rates Receiver Buffer Register RBRDivisor Latch Registers DLM and DLL Data Rate Divisor Number Divisor Latch Hex16C550A Uart Fifo Operation Fifo Interrupt Mode OperationFifo Polled Mode Operation 102536EX Chipset Developer’s Manual 103
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