Example of a Remote Connection | Intel MD566X manual

56K V.92 Data, Fax, and Voice Chipset

No Echo, Text (E0, V1)	AT<CR>	<CR><LF>OK<CR><LF>
	ATS0?<CR>	<CR><LF>000<CR><LF><CR><LF>OK
		<CR><LF>

Configure the DCE to use different response codes using the ATWn command (see page 49). The setting for the ATXn command (page 50) can affect which ATWn response codes are reported to the DCE. The ATXn command configures the modem call progress detection and reporting requirements during dialing (for example, dial tone and busy tone detection). The ATQn command selects whether the modem sends result codes to the DTE.

For example, a connection is established with the remote modem as shown below (with LAPM error correction and V.42 bis data compression). The telephone line (or modem-to-modem connection) data rate is 33,600 bps and the local UART (DTE-to-modem) connection rate is 115,200 bps.

DTE

UART

Interface

(115,200 bps)

LOCAL MODEM

Telephone

Line

(33,600 bps)

REMOTE MODEM

Figure 3-1. Example of a Remote Connection

The modem then sends the “CONNECT” messages for the following three Wn commands:

1. ATW0

CONNECT 115200

2. ATW2

CONNECT 33600

3. ATW3

CONNECT 115200/V34/LAPM/V42B/TX=33600/RX=33600

3.3Modem Reset and NVRAM Commands [DS=n, Zn, &F, &Vn, &Yn, &Wn, &Zn=x]

On powering-up, the DCE defaults to the configuration specified in NVRAM. The DCE may then be configured as needed. The DTE stores the DCE configuration in the NVRAM by first setting up the current configuration and then sending an AT&Wn command. The DCE configuration stored in the NVRAM is called a user profile. Two independent user profile configurations and four telephone numbers can be stored. Either user profile configuration can be used for the power-up defaults (AT&Yn). While in command mode, the DCE can be re-initialized at any time and the user profile changed using the ATZn command. To configure the modem to factory defaults, the AT&F command is used. A summary of the active user profile, two NVRAM user profiles, and

Programmer’s Guide

Intel Confidential

25

Image 25

Intel MD566X manual Example of a Remote Connection

Contents

MD566X Revision History Conventions Symbol Units of measureProgrammer’s Guide Acronym Definition Dram Introduction Chipset Contents QtyIntel V.90/V.92 56K Chipsets Modem Connection Overview V.92, V.90 and V.34 Data Modes DCE-to-DCE Data Rates for Each Mode DTE-to-DCE Data Rates for Each ModeMode Data Rate bps Affected Data Data Mode Command Summary AT Command Summary TablesCommand Function Default Range Reported by Intel Confidential Data rate Result code type Yes Ports only Async mode +GMI? Intel Confidential Command Function Default Range Reported By &Vn V.44 / V.42 / V.42 bis MNP∗ Command Summary Intel Confidential Value saved in Nvram Fax Class 1 Command Summary Fax Identity Command SummaryIS-101 Voice Command Summary Response Hex Code Function Voice DTE→DCE Character Pairs Voice DTE←DCE Character Pairs Register Function Default Range Units Reported By &Vn Dial Modifiers Command FunctionS-Register Summary Verbose Code Numeric Code 10. V.90/V.92 Mode DCE-to-ISP Response Codes 12. DTE-to-DCE Data Rate Response Codes 11. V.34 Mode DCE-to-DCE Response Codes Command Function Default Range 13. Manufacturing-Only Command Summary a Using AT Commands to Access the S-Registers Sn?, Sn=x, ? Basic Data Mode AT CommandsModem Responses and Command Echo En, Vn, Xn, Wn, Qn Modem Setup Host Command Modem Response Example of a Remote Connection Information Product Identification Information Establishing a Modem Connection A, D, DS = n, S0 Hanging Up Hn, S10, Zn, &D2 Online Command Mode Escape Codes, OnModem-to-Modem Connection Data Rates Intel Confidential Intel Confidential ATH +PMHF +PMHR Carrier Description Supported Modulation Types S37 +MS = carrier , automode, min rate, max rate Figured to attempt only a 28,800 bps connec Originating Answering Resulting Connection Speed Modem Local Analog Loopback AT&T1 Diagnostic Testing S18, &Tn AT&T0 Local Analog Loopback with Self-Test Local Analog Loopback With Self-Test AT&T8 Licensing Requirements for Hayes Escape Sequence AT Escape SequencesTime-Independent Escape Sequence Hayes∗ Escape Sequence Command Default Description Data Mode Command DescriptionsNone Stant carrier mode Dialing Digits Online data mode echo Reports product code ATI5 Cont Mode from online command mode Sn? Sn=x Protocol Lapm Sequent commands to be ignored For data mode Ports asynchronous mode. This command is the same as &M0 User profile n Zn=x None Modem power-up +GMR? V34BS +MS=m See m Cont Modulation Selection +MS=m Examples DTE data rate = 115,200 bpsExamples DTE data rate = 2400 bps +PMH=m +PCW=m DCE +PMHR none Mand +PSS=m Intel Confidential Mode Features Error Correction and Data Compression Resulting \Nn Connection Types Bis with fallback to MNP5 \N3 \Bn None \An \Gn \Cn\Jn \Nn \Kn \Tn \Qn\Xn Intel Confidential +DS44=m 972,140 0,471140,1884 3768 Fax Identity Commands FAX Class 1 AT CommandsFax Identity Command Descriptions Tocols +FREV?/+FMR? none Fax Class 1 Commands Value Modulation Speed Bps Mod Selection Table Class 1 DTE-Generated Hdlc Frame Information AT+FTH=mod +FCLASS=1 Fax Mode Command Descriptions +FRH=n Command Default Description Receive Hdlc Data+FRM=n None +FRS=n None DTE after receiving the +FTH=mod command Data using the modulation selected in mod Each command may be used as follows IS-101 Voice Mode AT Commands Relay Control Dtmf Detection +FLO=n Voice Mode Command Descriptions +VCID=n +VBT=m +VDR=m Enable Report Function+VEM=m See m Dialtone +VEM=m Example 3. Reading the Event Mask Settings Example 2. Setting the Event MaskEvent Reporting and Masking Example 1. Viewing Supported Events +VGR=n 128 +VGM=n 128+VGS=n +VGT=n +VIP none +VLS=n Code Primitive Code +VLS=n Relay/Playback Control+VNH=n Intel Confidential +VRX none +VSD=m See ‘m’ = sds, sdi Defaults m = 128 Vsr Comments Samples/second Manufac +VSM=m turer- specified +VSM=m Manufac Compression Method SelectionVsr Hard Disk +VTD=n 100 +VSP=n +VTS=m none AT+VTS=DTMF or Dtmf and Tone Generation AT+VTS= , ,duration For example AT+VTS= , ,50 Intel Confidential Registers S-Register Command Descriptions Ascii decimal S11 S10S12 S16 S14 138 S22 118 S21 S27 S23 None S31 S33 Maximum Line Speed Attempted 110 Caller ID Tags for Formatted Reporting Caller ID Ring Manufacturing-Only Command Descriptions MANUFACTURING-ONLY CommandsNCnn S92 S91 $TTnn FAX Test Tone Test Command Analog Loopback ALB Test #VGP0=n Command Bit Pins#VGP1=n See Note #VGP2=n 118 Programmer’s Guide Parallel Host Interface 16C450/16C550A Uart119 Register BIT Number Address Name Parallel Host Interface Uart Register Bit Assignments Scratch Register SCR Uart Register DefinitionsModem Status Register MSR Line Status Register LSR Modem Control Register MCR Are no subsequent Fifo errors 123 Line Control Register LCR Trigger Level Bytes Fifo Control Register FCR Interrupt Control Functions Interrupt Identity Register IIR125 Transmitter Holding Register THR Interrupt Enable Register IER10.1.10Receiver Buffer Register RBR 10.2 16C550A Uart Fifo Operation Fifo Interrupt Mode Operation10.1.11Divisor Latch Registers DLM and DLL Programmable Data Rates Fifo Polled Mode Operation 129 130