Intel 536EX Intel Confidential, Fax Class 1 AT Commands, Fax Mode Command Descriptions Continued

Page 69
+FTH=m

Fax Class 1 AT Commands

Table 24. Fax Mode Command Descriptions (Continued)

Command

Default

Description

 

 

 

 

 

Transmit HDLC Data: The +FTH=<mod> command causes the modem to transmit

 

 

data framed in HDLC protocol using the modulation mode selected. <mod> may have

 

 

the values shown in Table 23 on page 65.

 

 

After receiving the +FTH command, the modem sends a ‘CONNECT’ result code to

 

 

the DTE. The modem then transmits signal converter training (if required) followed by

 

 

flags until the first byte of data is sent by the DTE. The modem terminates the +FTH

 

 

command upon detecting <DLE><ETX> characters in the data stream.

 

 

When the buffer is empty, the modem computes and appends the FCS (Frame Check

 

 

Sequence) and a closing flag to the frame. The modem ensures that the minimum

 

 

number of flags required by T.30 are sent before the data from the DTE begins to be

 

 

transmitted.

 

 

The modem checks the final frame bit in the control field of each frame; this is the fifth-

 

 

received bit of the second byte of each frame. If the final frame bit is a ‘1’, the modem

 

 

ceases transmission after the frame is sent, returns to command state, and sends the

+FTH=m

none

‘OK’ result code to the DTE. If the final frame bit is a ‘0’, the modem sends another

‘CONNECT’ result code to the DTE after the current frame is sent. The modem

 

 

continues to transmit flags until the DTE takes one of the following actions:

 

 

• The DTE sends additional data. The modem then transmits another frame.

 

 

• The DTE sends only <DLE><ETX> (a null frame). The modem then turns off the

 

 

transmit carrier and send the ‘OK’ result code to the DTE.

 

 

• If the DTE transmits no additional data within 5 seconds from when the modem

 

 

reported the ‘CONNECT’ result code, the modem turns off the transmit carrier

 

 

mode, returns to command mode, and sends the ‘ERROR’ result code to the DTE.

 

 

In HDLC transmit mode, the modem performs HDLC transparency functions, FCS

 

 

generation, and buffers the transmit data. The modem uses the configured method of

 

 

flow control to pause the DTE as necessary.

 

 

NOTE: If the modem is on-hook, it always returns an ‘ERROR’ message to the DTE

 

 

after receiving the +FTH=<mod> command.

 

 

Range: <mod> = 3

 

 

Refer to Table 23 on page 65.

 

 

 

 

 

Transmit Data: The +FTM = <mod> command causes the modem to transmit data

 

 

using the modulation selected in <mod>.

 

 

The modem returns a ‘CONNECT’ result code and transmits the proper training

 

 

sequence in the selected mode, followed by constant ‘1’ bits until data is received from

 

 

the DTE. The modem terminates this command upon detecting <DLE><ETX>

 

 

characters in the data stream.

 

 

If the modem’s transmit buffer empties and the last transmitted character is an ASCII

 

 

NULL (00), the modem continues to transmit NULLs until the DTE sends more data or

 

 

5 seconds have elapsed. After 5 seconds have elapsed with an empty transmit buffer,

+FTM=m

none

the DCE turns off the transmit carrier, returns to command state, and returns an

‘ERROR’ result code to the modem.

 

 

 

 

NOTE: Hex $00 replication does not provide the required timing needed for

 

 

generating the TCF frame (1.5 seconds of ‘0’s’).

 

 

If the modem’s transmit buffer empties and the last transmitted character was not a

 

 

NULL, the modem turns off the transmit carrier, returns to command state, and sends

 

 

the ‘OK’ result code to the DTE.

 

 

NOTE: If the modem is on-hook, the modem always returns an ‘ERROR’ message to

 

 

the DTE after receiving the +FTM = <mod> command.

 

 

Range: <mod> = 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146

 

 

Refer to Table 23 on page 65.

 

 

 

 

 

Stop Transmission and Pause: The +FTS=<TIME> command causes the modem to

+FTS=m

none

stop all transmissions. The modem waits for the specified amount of time, then sends

an ‘OK’ result code to the DTE. The value <TIME> is in 10 ms intervals.

 

 

 

 

Range: <TIME> = 0–255 (in 10 ms intervals)

 

 

 

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

536EX Chipset Developer’s Manual

69

Intel Confidential

Page 68 Page 70
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Contents 536EX Chipset Developer’s ManualJanuary 536EX Chipset Developer’s Manual Intel ConfidentialContents ContentsFigures Tables Date Revision HistoryRevision Description1.1Controllerless Modem Driver Overview Introduction1.1.2Windows 95 and Windows Figure 1. WDM Driver Block DiagramUser applications Kernel - ring01.2V.90/V.92 and V.34 Data Modes Figure 2. VxD Mini Port Driver Block Diagram1.3Modem Connection Overview Table 1. DTE-to-DCEData Rates for Each Mode Table 2. DCE-to-DCEData Rates for Each ModeTable 3. DCE-to-ISPData Rates for V.90 Mode Table 4. DTE-ModemData Rate Response Codes 1.4.1Sending Commands1.4.3Dial Modifier 1.4.2AT Escape SequencesAT Command Summary Tables AT Command Summary TablesTable 5. Data Mode Command Summary Table 5. Data Mode Command Summary Continued Result code type Table 5. Data Mode Command Summary Continued Generate data mode calling tone Table 6. V.44/V.42/V.42 bis MNP Command Summary Intel Confidential Table 8. Fax Class 1 Command Summary Table 7. Fax Identity Command SummaryTable 10. Voice DTE→DCE Character Pairs Table 9. IS-101Voice Command SummaryTable 11. Voice DTE←DCE Character Pairs Table 10. Voice DTE→DCE Character Pairs ContinuedTable 11. Voice DTE←DCE Character Pairs Continued Table 12. Dial ModifiersTable 13. S-RegisterSummary Table 13. S-RegisterSummary Continued Data Mode AT COMMANDS Data Mode AT COMMANDSFigure 3. Example of a Remote Connection Table 14. Data Reporting Wn MappingATW0 •ATW2Data Mode AT COMMANDS +FMFR?, +FMDL?, +FREV? 3.6Online Command Mode Escape Codes, On 3.7Hanging Up Hn, S10, Zn, &D23.8Modem-to-ModemConnection Data Rates Data Mode AT COMMANDS +PCW=0 +PMH=0+VCID=1 +++ATData Mode AT COMMANDS 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 3.9.1Local Analog Loopback AT&T1 3.9Diagnostic Testing S18, &TnLOCAL MODEM 3.9.2Local Analog Loopback With Self-TestAT&T8Figure 6. Local Analog Loopback Test Local Modem or Test ModemLicensing Requirements for Hayes Escape Sequence 3.10.1Time-IndependentEscape Sequence<char1><char2><char3><AT command><contents of S3> Formatchar1 = char2 = char3 = escape character S2 3.10.2Hayes* Escape Sequence Table 18. Data Mode Command DescriptionsData Mode AT COMMANDS Sn=x Data Mode AT COMMANDS Intel Confidential536EX Chipset Developer’s Manual NOTE: An asterisk * denotes the factory-defaultsetting AT&V0 Data Mode AT COMMANDS Command Default IndicationDefinition 1, 0, Data Mode AT COMMANDS +ESR +ETBM1, 1, +GSN +GMR+IFC +ILRR=mIntel Confidential Description <carrier>+MS=m see ‘m’+PMHF +PHSW=<value> +PMHRData Mode AT COMMANDS Error Correction and Data Compression4 Error Correction and Data CompressionTable 19. Operating Modes NOTES Table 20. Resulting +ES Connection TypesError Correction and Data Compression Intel Confidential536EX Chipset Developer’s Manual Error Correction and Data Compression direction +DR=m+DS=m <max string>+EFCS=m 3768+ER=m +ES=m 5.1Fax Identity Commands Fax Class 1 AT 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 +FRH=m Table 24. Fax Mode Command Descriptions ContinuedRefer to Table 23 on page shown in Table 23 on page+FTH=m IS-101Voice Mode AT Commands IS-101Voice Mode AT CommandsTable 25. Voice Mode Command Descriptions 6.1DTMF Detection Reporting6.2Relay Control m = <deassert>, <assert> +FLO=m+VDR=m m=<enable>, <report>+VEM=m m = <mask>Intel Confidential +VIP +VLS=m Preassigned Voice I/O LabelsRelay/Playback Control: cont Voice I/O Primitive Codes+VRX m = <sds>, <sdi>+VSD=m m= <cml>, <vsr>, <scs>, <sel> +VSM=mTransmission: Range: +VSP=m Compression Method Selection: contfactory default is ‘0’ none +VTS=mDefault CommandDescription DTMF and Tone Generation: contS-Registers Table 26. S-RegisterCommand DescriptionsS-Registers Intel Confidential S-Registers536EX Chipset Developer’s Manual Intel Confidential S-Registers536EX Chipset Developer’s Manual Intel Confidential S-Registers536EX Chipset Developer’s Manual Intel Confidential Caller ID Caller IDTable 27. Caller ID Tags for Formatted Reporting RING RING RING DATE = TIME = NMBR = NAME = DOE JOHN MESG =<DLE> R NMBR =UART Parallel Host Interface 16C450/16C550AParallel Host Interface 16C450/16C550A UART Figure 11. UART Emulation in Intelsdb.VxDUART Receiver Flow Diagram UART Transmitter Flow DiagramBIT NUMBER REGISTERADDRESS NAME9.2.2Modem Status Register MSR 9.2.1Scratch Register SCRFigure 14. Scratch Register SCR Figure 15. Modem Status Register MSRFigure 16. Line Status Register LSR 9.2.3Line Status Register LSR9.2.5Line Control Register LCR 9.2.4Modem Control Register MCRFigure 17. Modem Control Register MCR Figure 18. Line Control Register LCR9.2.6FIFO Control Register FCR RegisterFigure 19. FIFO Control Register FCR 9.2.7Interrupt Identity Register IIR Figure 20. Interrupt Identity Register IIRTable 28. Interrupt Control Functions Figure 21. Interrupt Enable Register IER 9.2.8Interrupt Enable Register IER9.2.9Transmitter Holding Register THR Figure 22. Transmitter Holding Register THR9.2.11Divisor Latch Registers DLM and DLL 9.2.10Receiver Buffer Register RBRFigure 23. Receiver Buffer Register RBR Figure 24. Divisor Latch Registers DLM and DLL9.316C550A UART FIFO Operation 9.3.1FIFO Interrupt Mode Operation9.3.2FIFO Polled Mode Operation Intel Confidential Parallel Host Interface 16C450/16C550A UART536EX Chipset Developer’s Manual
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