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Chapter 5 – AT Commands, S-Registers, and Result Codes

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 

29

Chapter 5 – AT Commands, S-

Registers, and Result Codes

Introduction

The AT commands are used to control the operation of your modem. They are called 

AT

 commands

because the characters 

AT

 must precede each command to get the 

AT

tention of the modem.

AT

 commands can be issued only when the modem is in command mode or

 

online command mode. The

modem is in 

command mode

 whenever it is not connected to another modem. The modem is in

 

data

mode

 whenever it is connected to another modem and ready to exchange data.

 Online command mode

 is

a temporary state in which you can issue commands to the modem while connected to another modem.
To put the modem into online command mode from data mode, you must issue an 

escape sequence

(

+++

) followed immediately by the 

AT

 characters and the command, e.g., 

+++

 to hang up the modem. To

return to data mode from online command mode, you must issue the command 

ATO

.

To send AT commands to the modem you must use a communications program, such as the
HyperTerminal applet in Windows 98/95 and NT 4.0, or some other available terminal program. You can
issue commands to the modem either directly, by typing them in the terminal window of the
communications program, or indirectly, by configuring the operating system or communications program
to send the commands automatically. Fortunately, communications programs make daily operation of
modems effortless by hiding the commands from the user. Most users, therefore, need to use AT
commands only when reconfiguring the modem, e.g., to turn autoanswer on or off.

The format for entering an

 

AT command is 

AT

Xn

, where 

X

 is the command, and 

n

 is the specific value for

the command, sometimes called the command 

parameter

. The value is always a number. If the value is

zero, you can omit it from the command; thus, 

AT&W

 is equivalent to 

AT&W0

. Most commands have a

default 

value, which is the value that is set at the factory. The default values are shown in the “AT

Command Summary” (See below).

You must press ENTER (depending on the terminal program it could be some other key) to send the
command to the modem. Any time the modem receives a command, it sends a response known as a

result code

. The most common result codes are 

OK

, 

ERROR

, and the 

CONNECT 

messages that the

modem sends to the computer when it is connecting to another modem. See “Result Codes” at the end of
this chapter for a table of valid result codes.

You can issue several commands in one line, in what is called a command 

string

. The command string

begins with 

AT

 and ends when you press ENTER. Spaces to separate the commands are optional; the

command interpreter ignores them. The most familiar command string is the 

initialization string

, which is

used to configure the modem when it is turned on or reset, or when your communications software calls
another modem.

Содержание SocketModem MT5600SMI-32

Страница 1: ...odem MT5600SMI Family MT5600SMI 32 MT5600SMI L32 MT5600SMI P32 MT5600SMI 34 MT5600SMI L34 MT5600SMI XL34 MT5600SMI P34 MT5600SMI PL34 MT5600SMI 92 MT5600SMI L92 MT5600SMI XL92 MT5600SMI P92 MT5600SMI...

Страница 2: ...on A 09 04 03 First release Patents This device covered by one or more of the following patents 6 219 708 6 031 867 6 012 113 6 009 082 5 905 794 5 864 560 5 815 567 5 815 503 5 812 534 5 809 068 5 79...

Страница 3: ...grammer s Description 18 SocketModem Parallel Interface 18 Overview 18 Register Signal Definitions 20 IER Interrupt Enable Register Addr 1 DLAB 0 20 FCR FIFO Control Register Addr 2 Write Only 21 IIR...

Страница 4: ...DCE 102 Voice Configuration Commands 103 Basic Voice Commands 104 Chapter 8 Setting Country Codes 114 Appendix A Mechanical Details 115 Test Demo Board Components 115 5V 3 3V Jumper JP6 116 Serial Tes...

Страница 5: ...modem used for integrating data communications It is a single port 3 3V modem which integrates the controller DSP and DAA in a 1 x 2 5 form factor and communicates to a host controller via an asynchr...

Страница 6: ...or parallel interface V 17 V 21 V 27 V 29 Fax Fax Class 1 and 1 0 V 22bis Fast Connect FastPOS V 29 Voice send and receive functions LED pin output option Industry standard error correction and data...

Страница 7: ...0 680 2 65 x 6 45 x 1 7 cm Power Consumption Typical 115 mA 38W 3 3 V DC Maximum 116 mA 41 W 3 47 V DC Typical 117 mA 58 W 5 V DC Maximum 118 mA 61 W 5 25 V DC Operational Temperature 0 to 70 C Humidi...

Страница 8: ...Chapter 2 Mechanical Specifications Multi Tech Systems Inc SocketModem MT5600SMI Developer s Guide 8 Chapter 2 Mechanical Specifications Physical Dimensions Figure 2 1 Maximum Component Height...

Страница 9: ...ne RJ11 Pin 3 SocketModem is Tip Ring is polarity insensitive 2 Ring I O Ring Signal from Telco Ring connection to the phone line RJ11 Pin 4 SocketModem is Tip Ring is polarity insensitive 24 RESET I...

Страница 10: ...data set and does not indicate an actual link with any remote data equipment 38 CTS O Clear To Send CTS is controlled by the modem to indicate whether or not the modem is ready to transmit data CTS ON...

Страница 11: ...iption 1 Tip I O Telephone Line Interface TIP 2 Ring I O Telephone Line Interface RING 24 RESET I Modem Reset CMOS input with weak pull up The active low RESET input resets the SocketModem logic and r...

Страница 12: ...2 I Host Bus Address Line 2 35 D4 O Host Bus Data Line 4 36 D5 O Host Bus Data Line 5 37 D0 O Host Bus Data Line 0 38 D1 O Host Bus Data Line 1 39 D3 O Host Bus Data Line 3 40 CS I Host Bus Chip Selec...

Страница 13: ...TXD 35 RTS 33 RESET 24 Input High Min 2 0 V Input Low Max 0 8 V Inputs DCD 39 CTS 38 DSR 37 RI 36 RXD 34 2mA Z INT 120 W Output High Min 2 4 V Output Low Max 0 5 V Digital Input Capacitance 50pF 3 3V...

Страница 14: ...gh Min 2 V Input Low Max 8 V Digital Input Output DO 37 D1 38 D2 29 D3 39 D4 35 D5 36 D6 41 D7 27 Input High Min 2 V Input Low Max 8 V Current Drive 8 ma Digital Output INT 30 Output High Min 2 4 V Ou...

Страница 15: ...mW Max Power mW 3 3 V Configuration VDD 3 3 V Normal Mode Serial interface 115 116 0 38 0 41 5 V Configuration VDD 5 V Normal Mode Serial interface 117 118 0 58 0 61 Normal Mode Parallel interface 117...

Страница 16: ...Data Setup see Note 4 20 ns t DWH Write Data Hold see Note 5 5 ns Notes 1 When the host executes consecutive Rx FIFO reads a minimum delay of 2 times the internal CPU clock cycle plus 15 ns 85 86 ns...

Страница 17: ...Chapter 3 Electrical Characteristics Multi Tech Systems Inc SocketModem MT5600SMI Developer s Guide 17 Parallel Host Bus Read Parallel Host Bus Write...

Страница 18: ...Os are operative Furthermore when FIFO mode is selected DMA operation of the FIFO can also be selected FCR3 1 FIFO Mode Not Selected When FIFO mode is not selected operation is restricted to a 16450 i...

Страница 19: ...visor Latch Access Bit DLAB Set Break Stick Parity Even Parity Select EPS Parity Enable PEN Number of Stop Bits STB Word Length Select Bit 1 WLS1 Word Length Select Bit 0 WLSO 2 Interrupt Identify Reg...

Страница 20: ...upt Identifier Register IIR bits and inhibits assertion of the HINT output All other system functions operate normally including the setting of the Line Status Register LSR and the Modem Status Regist...

Страница 21: ...R0 IIR3 4h or the received character timeout IIRO IIR3 Ch has occurred RXTDY will go inactive when there are no more characters in the RX FIFO TXRDY will be asserted when there are one or more empty u...

Страница 22: ...bit 3 is a 0 Bit 0 Interrupt Pending When this bit is a 0 an interrupt is pending IIR bits 1 3 can be used to determine the source of the interrupt When this bit is a 1 an interrupt is not pending Ta...

Страница 23: ...ed as determined by the LCR3 and LCR4 bits Bit 4 Even Parity Select EPS When parity is enabled LCR3 1 and stick parity is not selected LCR5 0 the number of 1s transmitted or checked by the receiver in...

Страница 24: ...ffer 2 The DTS MCR0 RTS MCR1 Out1 MCR2 and Out2 MCR3 modem control register bits are internally connected to the DSR MSR5 CTS MSR4 RI MSR6 and DCD MSR7 modem status register bits respectively Bit 3 Ou...

Страница 25: ...eceived data input is a space logic 0 for longer than two full word lengths plus 3 bits The BI is reset when the host reads the LSR Bit 3 Framing Error FE This bit indicates that the received characte...

Страница 26: ...of the CTS output If Loopback is selected MCR4 1 this bit reflects the state of the RTS bit in the MCR MCR1 Bit 3 Delta Data Carrier Detect DDCD This bit is set to a 1 when the DCD bit changes state s...

Страница 27: ...ster at location 7 This register is not used by the modem and can be used by the host for temporary storage Divisor Latch Hex MS LS Divisor Decimal Baud Rate 06 00 1536 75 04 17 1047 110 03 00 768 150...

Страница 28: ...ver Character Timeout Interrupts When the FIFO mode is enabled FCR0 1 and receiver interrupt Receiver Data Available is enabled IER0 1 receiver character timeout interrupt operation is as follows 1 A...

Страница 29: ...m or communications program to send the commands automatically Fortunately communications programs make daily operation of modems effortless by hiding the commands from the user Most users therefore n...

Страница 30: ...ands FCLASS Reports Current or Selected Values FCLASS Reports Range of Parameters Command VCID Caller ID CID Description Controls the reporting and presentation of data associated with the Caller ID s...

Страница 31: ...S48 7 N4 Selects LAPM error correction mode Failure to make an LAPM error correction connection results in the modem hanging up Forces Q5 and S48 0 Note The K1 command can override the N4 command N5 S...

Страница 32: ...ASS MS ES DS for a data modem that supports all capabilities listed Where MS M commands Modulation Control MS and MR commands ES E commands Error Control ES EB ER EFCS ETBM DS D commands Data Compress...

Страница 33: ...as denoted by the parameter value This command will yield an ERROR message if the NVRAM is not installed or is not operational as detected by the NVRAM test The current configuration is comprised of...

Страница 34: ...loader FLM If the user wishes to download existing firmware from the modem he should load the downloader FLM In either case the data transfer is done via an ASCII transfer The FLM contains the program...

Страница 35: ...imeout Displayed if the DTE has stopped the XMODEM transfer process before it is finished If this occurs the user should restart at step 5 Code doesn t match Hardware Displayed if the user is attempti...

Страница 36: ...he DTE The parameter if valid is written to S14 bit 3 Default 1 Defined Values V0 Enables short form terse result codes Line feed is not issued before a short form result code V1 Enables long form ver...

Страница 37: ...isables reporting of busy tones unless forced otherwise by country requirements send only OK CONNECT RING NO CARRIER ERROR NO ANSWER and CONNECT XXXX XXXX rate Blind dialing enabled disabled by countr...

Страница 38: ...llows Q0 Q1 Q5 Q6 DTR drop is interpreted by the modem as if the asynchronous escape sequence had been entered The modem returns to asynchronous Command State without disconnecting Q2 Q3 DTR causes th...

Страница 39: ...ost Result Codes OK Otherwise ERROR Command IPR Fixed DTE Rate Description This numeric extended format parameter specifies the data rate at which the modem will accept commands during online operatio...

Страница 40: ...C2 CTS RTS Report Commands IFC Reports the current or selected values Response IFC modem_by_DTE DTE_by_modem Example IFC 2 2 For the defaults IFC Reports the supported range of parameter values Respon...

Страница 41: ...his stage Dial Modifiers The valid dial string parameters are described below Punctuation characters may be used for clarity with parentheses hyphen and spaces being ignored Defined Values Character s...

Страница 42: ...subsequent command lines The modem will enter call progress only after an additional dial command is issued without the terminator Use H to abort the dial in progress and go back on hook Toggles calli...

Страница 43: ...ot be available for some countries due to PTT restrictions Default None Defined Values H0 The modem will release the line if the modem is currently on line and will terminate any test AT T that is in...

Страница 44: ...g answering Result Codes OK Otherwise ERROR Command G Select Guard Tone Description Causes the modem to generate the guard tone selected by this command DPSK modulation modes only The parameter value...

Страница 45: ...ample AT V ACTIVE PROFILE B1 E1 L1 M1 N0 QO T V1 W0 X4 Y0 C1 D2 G0 J0 K3 Q5 R1 S0 T5 X0 S00 000 S01 000 S02 043 S03 013 S04 010 S05 008 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 S12 050 S18 000...

Страница 46: ...Count 00 Remote Rtrn Count 00 Flex 9481814347C4 RBS Pattern Shows which bits are being robbed in the least significant 6 bytes e g 03 indicates 2 robbed bits in bit positions 0 and 1 Digital Loss Sho...

Страница 47: ...for 56K modulation V34 for V 34 modulation V32 for V 32 or V 32bis modulation Note Modulation is omitted for all other modulations Protocol NONE for no protocol ALT for Microcom Network Protocol LAPM...

Страница 48: ...the message LINE IN USE When off hook and either an extension is picked up or a line reversal is detected the modem will drop the connection The disconnect reason in register S86 25 this is also defi...

Страница 49: ...telephone line so the user hears the dial tone Remote Hang up Enabled by AT STE 4 AT STE 5 AT STE 6 or AT STE 7 Case 1 Modem off hook Remote Hang up If the modem is connected off hook and the remote m...

Страница 50: ...use the line while giving the voice user the highest priority A common use for these features would be an automated system that needs to periodically use the line while giving the voice user the highe...

Страница 51: ...3 36000 34667 33333 32000 30667 29333 28000 V 92 upstream V92 48000 46667 45333 44000 42667 41333 40000 38667 37333 36000 34667 33333 32000 30667 29333 28000 26667 25333 24000 Note Some carrier values...

Страница 52: ...ted by the selected carrier Report Commands MS Reports current rates Response MS carrier automode min_tx_rate max_tx_rate min_rx_rate max_rx_rate Note The current active settings are reported under co...

Страница 53: ...e Line Quality Monitor and Auto Retrain or Fallback Fall Forward Description Controls whether or not the modem will automatically monitor the line quality and request a retrain E1 or fall back when li...

Страница 54: ...lt Codes OK Otherwise ERROR Command B CCITT or Bell Description When the modem is configured to allow either option the modem will select Bell or CCITT modulation for a line speed connection of 300 or...

Страница 55: ...e is entered orig_fbk Decimal number specifies the acceptable fallback mode of operation when the modem is operating as the originator ES0 LAPM MNP or Normal Mode error control optional Default ES1 LA...

Страница 56: ...Decimal number 0 specifying that any transmitted V 42 L SIGNAL will not indicate break signal length default_length Decimal number 0 specifying that break is not delivered to the DTE Report Commands...

Страница 57: ...me the modem has determined the error control protocol will be used if any before the final result code e g CONNECT is transmitted The ER intermediate result code if enabled is issued after the Modula...

Страница 58: ...3 4 and 5 Defined Values The response is different in three separate states The first state is where the modem receives a break from the DTE when the modem is operating in data transfer mode 0 Enter o...

Страница 59: ...conversion of a V 42 LAPM connection to an MNP 10 connection The parameter value if valid is written to S40 bits 0 and 1 Defined Values K0 Disables V 42 LAPM to MNP 10 conversion Default K1 Enables V...

Страница 60: ...max_string Specifies the maximum string length 32 bytes to be negotiated V 42bis P2 Report Commands DS Reports Current or Selected Values Response DS direction compr_neg max_dict max_string Example DS...

Страница 61: ...compression_negotiation values list of supported capability values list of supported max_codewords_tx values list of supported max_codewords_rx values list of supported max_string_tx values list of su...

Страница 62: ...ions V44 RD V 44 is in use in receive direction only V44 TD V 44 is in use in transmit direction only ALT MNP 5 compression Example DR V42B Command C Enable Disable Data Compression Description Enable...

Страница 63: ...V 8 origination negotiation without A8x indications Default 6 Enable DCE controlled V 8 origination negotiation with A8x indications v8a Decimal number which enables disables issuance of A8x indicatio...

Страница 64: ...tion This indication is issued by an answering modem if A8E v8a 0 to indicate detection of a V 8 CI signal and report the recovered Call Function octet s Defined Values v8cf A hexadecimal code octet r...

Страница 65: ...carrier detection and training Modem to modem protocols e g V 42 V 42bis 3 Data Transfer Bit error rates for each direction Rate renegotiation Retraining 4 Call Termination protocol disconnect signal...

Страница 66: ...eared codes are described in Table 5 12 Table 5 4 AT UD Last Call Status Report Format Key Value s Definition 0 2 digits Diagnostic Command Specification revision number digit digit 1 Table 5 5 Call S...

Страница 67: ...V 253 operating in voice mode e g FCLASS 8 0 7 Data Answering signal detected e g V 25 ANS V 8 ANSam 8 Data Calling signal detected e g V 25 CT V 8 CI 9 Fax Answering signal detected e g T 30 CED DIS...

Страница 68: ...e as Delayed see ETS 300 001 2B ExtensionPhoneOff hook If extension detection supported 2C CallSetupFailTimerExpired e g S7 timeout 2D IncomingCallDetected If incoming call while sending dial command...

Страница 69: ...mit rate is 31200 bit s DIAG 2A4D3263 21 D 25 1F40 27 DAC0 Receiver V 90 training completed V 90 symbol rate 8000 initial receive rate is 56000 bit s DIAG 2A4D3263 30 00 31 03 32 01 33 01 No carrier l...

Страница 70: ...uests dial up operation Dial up operation continues Result Codes OK ERROR Command M Enable Cellular Power Level Adjustment Description This command is included for compatibility only and has no effect...

Страница 71: ...st modem on hold if enabled by PMH and collect caller ID information if enabled by VRID Toggle V 24 circuit 125 Default PCW1 Hang up PCW2 Ignore call waiting Result Codes OK ERROR Report Commands PCW...

Страница 72: ...Granted PMHR6 MOH with 2 minute timeout Granted PMHR7 MOH with 3 minute timeout Granted PMHR8 MOH with 4 minute timeout Granted PMHR9 MOH with 6 minute timeout Granted PMHR10 MOH with 8 minute timeout...

Страница 73: ...es the modem to initiate the flash hook sequence when in the modem on hold procedure This enables switching to the second call incoming or outgoing This command applies only to V 92 modem on hold Ther...

Страница 74: ...xample PSS 0 1 2 Command QCPC Force Full Startup Procedure on Next Connection Description Causes the modem to use full startup procedures on the next connection attempt regardless of the setting of th...

Страница 75: ...d the modem echoes back to the local DTE the Backspace character an ASCII space character and a second Backspace character this means a total of three characters are transmitted each time the modem pr...

Страница 76: ...F Tone Duration 1 For US models S11 sets the duration of tones in DTMF dialing has no effect on pulse dialing 2 For W class models S11 is a country parameter The default is country dependent S12 0 02...

Страница 77: ...ing handshake M3 Bits 4 6 Limit result codes Xn 0 X0 4 X1 5 X2 6 X3 7 X4 Default Bit 7 Reserved S23 0 General Bit Mapped Options Status Indicates the status of command options Bits 0 6 Not used Bits 6...

Страница 78: ...ond P3 Bit 5 7Reserved S29 10 ms 0 255 70 Flash Dial Modifier Timer Sets the length of time in units of 10 ms that the modem will go on hook when it encounters the flash dial modifier in the dial stri...

Страница 79: ...s programmed to follow the signal and the disconnect operation Applicable to error correction connection only This parameter can be used to ensure that data in the modem buffer is sent before the mode...

Страница 80: ...lection of compression The following actions are executed for the given values S46 136 Execute error correction protocol with no compression S46 138 Execute error correction protocol with compression...

Страница 81: ...nect reason S86 22 No connection established S86 23 Disconnect after three retrains S86 24 Call Waiting tone detected S86 25 Extension pickup detected S86 26 Remote hangup detected S91 dBm 0 15 10 PST...

Страница 82: ...ymbol Rates baud 0 0 0 2400 only 0 0 1 2400 only no 2734 0 1 0 2400 2800 0 1 1 2400 2800 3000 1 0 0 2400 2800 3000 3200 1 0 1 2400 2800 3000 3200 3429 Default Bit 3 Enable disable V 34 asymmetric rate...

Страница 83: ...NSWER 9 CONNECT600 10 CONNECT 2400 11 CONNECT 4800 12 CONNECT 9600 13 CONNECT 7200 14 CONNECT 12000 15 CONNECT 14400 16 CONNECT 19200 17 CONNECT 38400 18 CONNECT 57600 19 CONNECT 115200 20 CONNECT 230...

Страница 84: ...4 MRR 40000 155 MRR 42000 156 MRR 44000 157 MRR 46000 158 MRR 48000 159 MRR 50000 160 MRR 52000 161 MRR 54000 162 MRR 56000 165 CONNECT 32000 166 CONNECT 34000 167 CONNECT 36000 168 CONNECT 38000 169...

Страница 85: ...ms Inc SocketModem MT5600SMI Developer s Guide 85 Short Form Long Form 196 MRR 29333 197 MRR 30667 198 MRR 33333 199 MRR 34667 200 MRR 37333 201 MRR 38667 202 MRR 41333 203 MRR 42667 204 MRR 45333 205...

Страница 86: ...d Flow control using XON XOFF or RTS CTS is provided Unique control character strings are identified filtered or reinserted into the I O data stream These control characters and their resultant action...

Страница 87: ...ion of the dial function a calling tone at 1100 Hz is transmitted with a cadence of 0 5 seconds on and 3 seconds off The modem automatically enters mode FRH 3 and sends the CONNECT message to the DTE...

Страница 88: ...viously If carrier is lost while in command mode and the DTE reissues the FRH command with the same parameter and there is no data in the buffer the modem sends the ERROR result code to the DTE and re...

Страница 89: ...goes on hook and generates the ERROR result code Fax Data Reception Fax data reception is initiated using the AT FRM mod command After this command is issued the modem looks for carrier in the modula...

Страница 90: ...Command FAE Auto Answer Enable Class 1 and 1 0 Description This command enables or disables fax adaptive answer This command operates identically to the FAA command Defined Values value Decimal number...

Страница 91: ...the modem to transmit data using the modulation defined below When a valid mod value is entered the modem transmits the proper training sequence in the selected mode followed by constant 1 bits until...

Страница 92: ...if loss of carrier is detected OK Reported if the DTE sends any character to the modem other than XON or XOFF while operating in configured flow control from the DTE the modem then returns to the comm...

Страница 93: ...se FRH mod Example FRH 98 For V 17 9600 bps Reporting Supported Range of Parameter Values Command FRH Response FRH Example FRH 98 For V 17 9600 bps Result Codes CONNECT Reported for either of two cond...

Страница 94: ...lay between initial loss of carrier and qualified loss of carrier when the modem will give up and exit a receive mode Intermediate less than FCL timeout loss of carrier should be indicated by insertio...

Страница 95: ...Values time The time parameter indicates the DTE inactivity timeout in seconds The value of 0 indicates that timeout is disabled default The required timeout range is 1 to 255 seconds The inactivity...

Страница 96: ...0 bits s executes IPR 4800 4 9600 bits s executes IPR 9600 8 19200 bits s executes IPR 19200 10 38400 bits s executes IPR 38400 18 57400 bits s executes IPR 57400 If unspecified or set to 0 automatic...

Страница 97: ...r corresponding to the selected option 0 XON XOFF and RTS CTS flow control turned off 1 Use XON XOFF flow control in either direction 2 Use RTS for flow control of the modem by the DTE use CTS for flo...

Страница 98: ...T FRH 3 TSI frame data DLE ETX DCS frame data DLE ETX CONNECT CONNECT OK send V 21 carrier send flags send TSI frame send FCS send flags send DCS frame send FCS flags drop carrier detect carrier detec...

Страница 99: ...etect loss of carrier drop carrier DTE did not check final frame bit and issued FRH 3 AT FTM 96 CONNECT TCF data DLE ETX OK detect carrier receive TCF detect loss of carrier wait 75 ms send V 29 carri...

Страница 100: ...Flow Control Voice VIP Voice Initialize All Parameters VRX Start modem Receive Record VTS Voice Tone Send Send single frequency or DTMF VTX Start modem Transmit Playback VGR Voice Gain Receive Record...

Страница 101: ...of DTMF tone shielding 7 15 DTMF transitions to off R 5 2 Ring 1 3 1 DTMF 1 2 3 2 DTMF 2 3 3 3 DTMF 3 4 3 4 DTMF 4 5 3 5 DTMF 5 6 3 6 DTMF 6 7 3 7 DTMF 7 8 3 8 DTMF 8 9 3 9 DTMF 9 0 3 0 DTMF 0 A 4 1...

Страница 102: ...e Simple Action Command Description DLE 1 0 Two contiguous DLE DLE codes indicate a single DLE in the data stream Immediate Command or Stream Command u 7 5 Action Numbers 0 and 3 Increase the volume o...

Страница 103: ...her modes 1 The modem disables automatic hangups usually found in the other non Voice Modes 2 The modem disables automatic hangups in the other non Voice Modes The modem performs only a logical hangup...

Страница 104: ...different than that given by the VTD command Missing subparameters assume the default value Unspecified values always default to zero for frequencies DTMF for DTMF tones and VTD for duration The omis...

Страница 105: ...ith duration given by the VTD command 3 Play tone pair at 1000 Hz and 1300 Hz with a duration of 500 ms 4 Play tone pair at 800 Hz with duration given by the VTD command 5 Play DTMF 9 with duration gi...

Страница 106: ...mmand VGT Response level range Example 0 255 Result Codes OK level 0 255 ERROR Otherwise or if not in Voice Mode Command VIT Voice Inactivity Timer DTE Modem Description This command sets the modem s...

Страница 107: ...form description shows just one A CR LF terminates each description line Example AT VLS 0 B0804100 B0804100 B0804100 1 T 0B8433C1 0FE431C1 0B8431C1 2 L 08800300 0CE00100 08800100 3 LT 0B8433C1 0FE431...

Страница 108: ...ected to the line DCE off hook DCE connected to the line Local phone provided with power to detect hook condition X 14 H External Microphone and Speaker combination handset or headset connected to the...

Страница 109: ...2225 Hz Simple 27 Voice Detect Simple 29 Stuttered Dial tone Simple note 1 30 Invalid Voice Data Format Simple 31 Lost Data Detected Event Simple 32 Facsimile Answer Simple Legend This table lists eve...

Страница 110: ...Defined Values interval Decimal number specifying the time period in units of 1 0 second that the modem will wait for Ringback during call origination A value of 0 forces the modem to report the OK r...

Страница 111: ...lues containing the supported range of sensitivity settings for voice receives sel range of values containing the supported range of expansion values for voice transmits Reporting Current or Selected...

Страница 112: ...the timing of the RING event code report if ring cadence reporting is enabled Syntax VDR enable report Defined Values enable Decimal number corresponding to the selected option 0 The modem will not re...

Страница 113: ...es Command VDT Response enable report Example 0 0 For the default setting Reporting Supported Range of Parameter Values Command VDT Response enable range report range Example 0 0 Result Codes OK enabl...

Страница 114: ...2 Verify B5 was set by typing AT GCI CR or ATI5 CR 3 B5 indicates the configuration is set for any B5 country such as Canada or the United States etc Country Codes Supported The list below describes...

Страница 115: ...Appendix A Mechanical Details Multi Tech Systems Inc SocketModem MT5600SMI Developer s Guide 115 Appendix A Mechanical Details Test Demo Board Components...

Страница 116: ...ements of your SocketModem If this jumper is set incorrectly damage to the SocketModem and or the Test Demo card could result Caution Use only the provided Multi Tech Systems Inc transformer with the...

Страница 117: ...Appendix A Mechanical Details Multi Tech Systems Inc SocketModem MT5600SMI Developer s Guide 117 Parallel Test Demo Board Block Diagram Parallel Test Demo Board Block Diagram...

Страница 118: ...m Certifications We are continually working to extend this list Please contact your Multi Tech sales representative to get an updated list Telecom Certifications as of August 3 2003 Country Country Ar...

Страница 119: ...safety and Telecom labeling requirements Hardware Considerations Disclaimer Multi Tech Systems makes no warranty claims for vendor product recommendations listed below Other vendor products may or ma...

Страница 120: ...cturer Murata Erie Part GHM3045X7R221K GC Surface mount device and Part DE0807B221K KH Thru hole device Manufacturer Ever Grace Electronic Industrials Part YP221K2EA7PS Note The capacitors used on T R...

Страница 121: ...onics and electrical engineering text books and component supplier application notes PC Board Layout Guidelines In a 2 layer design provide an adequate ground grid in all unused space around and under...

Страница 122: ...a to minimize capacitive coupling to other circuits 8 Locate cables and connectors so as to avoid coupling from high frequency circuits 9 Lay out the highest frequency signal traces next to the ground...

Страница 123: ...latory Compliance Multi Tech Systems Inc SocketModem MT5600SMI Developer s Guide 123 5V Tolerant Inputs for 3 3V Modules In order to drive the inputs of 3 3V modules from 5V logic it is recommended to...

Страница 124: ...n a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try...

Страница 125: ...d But if advance notice isn t practical the telephone company will notify the customer as soon as possible Also you will be advised of your right to file a complaint with the FCC if you believe it is...

Страница 126: ...rk interface and equipment not connecting to circuits with analog ringing supplied the letter N shall appear xxxx is a product identifier unique when combined with the responsible party s Grantee Code...

Страница 127: ...ct Certified or self declared TE will bear a valid identifying certification or registration number The marking of the certification or registration number on the product shall be as follows a TAC hol...

Страница 128: ...Industry Canada This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe B respecte toutes les exigences du...

Страница 129: ...aling Use of pulse dialing when this equipment is connected to the same line as other equipment may give rise to bell tinkle or noise and may also cause a false answer condition Should such problems o...

Страница 130: ...that may cause the modem to become non compliant EMC Safety and R TTE Directive Compliance The CE mark is affixed to this product to confirm compliance with the following European Community Directives...

Страница 131: ...V1 46 W 33 Y 33 Z 33 M 70 34 M 70 A8E 63 A8I DR 61 DS 60 DS44 60 EB 56 EFCS 56 ER type 57 ER 57 ES 55 ESR 56 ETBM 57 FCLASS 30 GCAP 32 GCI 32 GMI 31 GMM 32 GMR 32 IFC 40 ILRR 40 IPR 39 MR 53 MS 51 PCW...

Страница 132: ...29 Examples of calling answering table 98 extended result codes command X 37 F FastConnect control command F 71 Fax adaptive reception control parameter FAR 94 fax answering 87 Fax carrier loss timeou...

Страница 133: ...t model identification command GMM 32 request modem manufacturer command GMI 31 request revision identification command GMR 32 restore factory default configuration profile command F 32 result code fo...

Страница 134: ...FO Interrupt Operation 28 U use short sequence command PSS 74 V V 44 data compression select command DS44 60 V 8 and V 8bis operation control command A8E 63 V 92 modem on hold hook flash command PMHF...

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