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Diamond SupraExpress 56e Скачать руководство пользователя страница 11

11

C

OMMUNICATION

S

TANDARDS

This section discusses the following topics:

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OMMUNICATION

•

ONFIGURATIONS

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M

ODEM

C

OMMUNICATION

S

TANDARDS

The International Telecommunications Union (ITU) is an international organization which
establishes world wide standards (also referred to as protocols) for communications devices.
Protocols define the basic communication link between two modems — that is, the frequency of
tones they use and how they modulate the data.

Your modem supports the following communication protocols: Bell 103 and 212A, ITU V.21, V.22,
V.22bis, V.23 and V.32. Your modem may support additional protocols. (Issue the

ATi10

command

from your software terminal mode to display the list of features your modem supports.) Additional
protocols may include: V.32bis (Feature #140), V.34 (Feature #153), V.80 (Feature #186), and
K56flex (Feature #203). The protocols used are determined by the type of modem you are
connecting to.

A unique set of protocols is supported for the U.S. and Canada: Bell 103 (300 bps) and Bell 212A
(1200 bps), named for the AT&T Bell Labs that developed them.

Almost everyone uses the ITU V standard protocols: V.21 (300 bps), and V.22 (1200 bps). At
connections of 2400 bps and faster, ITU standards are universal (given the necessary line conditions
and appropriate equipment support): V.22bis (for 2400 bps); V.32 (for 4800 and 9600 bps); V.32bis
(for 4800, 7200, 9600, 12000 and 14400 bps); and V.34 (for 2400, 4800, 7200, 9600, 12000, 14400,
16800, 19200, 24000, 26400, 28800, 31200 and 33600 bps). K56flex is used for 32,000, 34,000,
36,000, 38,000, 40,000, 42,000, 44,000, 46,000, 48,000, 50,000 52,000, 54,000 and 56,000 bps rates.

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Содержание SupraExpress 56e

Страница 1: ...x 19 Command Line Buffer 20 Result Codes 20 Dialing 21 Using the Dial Command 21 Storing a Telephone Number 23 Dialing a Stored Telephone Number 23 Automatic Pulse Dialing 23 Disabling Call Waiting 24 Answering 25 Answering Calls 25 Caller ID 26 High Speed Communication 27 56K Modem Technology 27 33 600 bps Connections 28 Asymmetric Data Rates 29 Selecting a Modulation to Control High Speed Connec...

Страница 2: ... Modem Program 48 Is the Modem Connecting to the Device on the Other End 49 To Uninstall Your Modem 53 AT Commands 55 Direct Commands 55 AT Commands 55 V 25ter AT Commands 66 Fax AT Commands 73 S Registers 75 Result Codes 81 Result Code Commands 81 Sample Result Codes 81 Determining Which Result Codes to Use 82 Modem Result Codes 82 FCC And IC 87 Federal Communications Commission FCC 87 FCC Regula...

Страница 3: ... Using AT Commands and Result Codes provides detailed instructions on using your modem s AT commands to perform tasks Dialing discusses dialing and Answering continues with specialized answering features High Speed Communication addresses 56K modem technology along with some of the unique aspects of communicating at high speeds Voice Features Fax Features and Video Features describe features uniqu...

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Страница 5: ...6e and serial number The names and version numbers of any software you re using with your modem e g FAXcilitate or FaxTalk We offer a wide range of methods for obtaining Technical Support Our Technical Support department can be reached by telephone fax or through many online services including our own BBS Fax and online services offer several advantages over calling when contacting Technical Suppo...

Страница 6: ...cations troubleshooting guides drivers shareware utilities relevant to our products as well as sysop order forms Our Technical Support addresses on the Internet are World Wide Web www diamondmm com FTP site ftp supra com Supra BBS This service offers help files for setting up a variety of software applications troubleshooting guides drivers shareware utilities relevant to our products and sysop or...

Страница 7: ...courage you to use our online services or fax services to contact Technical Support Those services provide round the clock access to our technicians without running up your long distance bill If you can t reach us by fax or through any of the online services please call The telephone lines for Technical Support are open Monday through Friday 5 AM to 7 PM and Saturday 8 AM to 4 PM Pacific Standard ...

Страница 8: ...use your software to dial the BBS number listed above 4 Once you have connected follow the BBS instructions for logging on Supra BBS File Area The Supra BBS File Area contains hundreds of files telecommunications software also called terminal programs upgraded SupraFAXModem drivers for popular telecom software third party bulletins information from Diamond and various other files Many of these fil...

Страница 9: ...sture corrosive environments shipping or high voltage surges from external sources such as power line telephone line or connected equipment This warranty also does not apply to any product with an altered or defaced serial number Limits of liability We are only responsible for the repair of this product We will not be liable to you or anyone else for any damages that result from the failure of thi...

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Страница 11: ...erminal mode to display the list of features your modem supports Additional protocols may include V 32bis Feature 140 V 34 Feature 153 V 80 Feature 186 and K56flex Feature 203 The protocols used are determined by the type of modem you are connecting to A unique set of protocols is supported for the U S and Canada Bell 103 300 bps and Bell 212A 1200 bps named for the AT T Bell Labs that developed t...

Страница 12: ... made to the active configuration are lost when you turn the modem off If you want the changes to be in effect when you turn on the modem the next time you can add any changes from the factory defaults to your software initialization string However many applications issue AT F as part of their initialization so even if you save your active profile the application s initialization will reset the fa...

Страница 13: ...Sr displays the value in S Register r For example ATSØ reads S Register Ø and displays three digits ØØ4 if the value is 4 The command ATSr n writes the value n into S register r Occasionally you may need to change a setting by issuing the ATSr n command The n must be a decimal integer from Ø to 255 For example the command ATSØ 4 CR sets register SØ to 4 which causes the modem to automatically answ...

Страница 14: ... sum of all data bytes in the block The block and its checksum are transmitted The receiving modem calculates a checksum on the received data block and compares it with the received checksum If these numbers are different the data block was not transmitted properly and the receiving modem instructs the transmitting modem to resend the data Error correction is necessary for high speed communication...

Страница 15: ... possible Use V 42bis rather than MNP 5 whenever possible to receive these benefits For better performance disable MNP 5 data compression C when using an MNP Reliable connection and transferring files that are already compressed by compression software such as ARC ZIP or StuffIt When files compressed by these programs are transferred using MNP 5 the files may take longer to transfer than files tra...

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Страница 17: ...re can not perform a task or you don t want it to you can issue the AT commands yourself These commands can be used to perform various tasks from hanging up to changing your modem s speaker volume Several chapters in this manual explain how to use the AT commands to accomplish specific tasks This chapter explains how the AT commands work The commands are listed in AT Commands ISSUING AT COMMANDS T...

Страница 18: ...the next section To change from command state to online state issue the command ATO go back on line ATA answer a call or ATD dial a number Command Line Syntax is discussed in this chapter The AT commands are listed in Appendix B ESCAPE CODE The escape code may be used while you are online to force the modem to the command state without hanging up The escape code is a string of three ASCII plus sig...

Страница 19: ...ollowing are valid examples AT DT 555 5055 CR Dial a touch tone phone number ATH CR Hang up AT F C1 D2 W CR Configure modem to the following and store it to memory A Re execute last command Commands are executed in order from left to right If a command contradicts an earlier command the later command takes precedence Command Forms The International Telecommunications Union ITU has made an effort t...

Страница 20: ...at you type on the screen and it ignores further commands RESULT CODES After the modem receives a command it returns a result code The most common result code isOK which means the modem understood your command Result codes can be represented by English words verbose mode or with numbers numeric mode The Result Code command ATV tells the modem whether to respond with verbose or numeric result codes...

Страница 21: ...tware to dial numbers and answer calls USING THE DIAL COMMAND Your modem dials phone numbers when you give it the dial command ATD and a phone number either alone or with dial modifiers For pulse dial lines the phone number must be an ASCII string containing the numbers Ø through 9 For touch tone dial lines the phone number must be an ASCII string containing the numbers Ø through 9 and the charact...

Страница 22: ...register n Ø to 3 T Tone dial the following digits Some country codes may not allow this command after the first digit W Wait for dial tone before processing the next character in the dial string useful for PBX phone systems within the time set in S6 and or S7 Use the DTMF code for star Use the DTMF code for gate Wait for bong Credit Card billing tone same as Wait for bong Credit Card billing tone...

Страница 23: ...ple the following command dials the number in memory location 1 AT DS1 CR AUTOMATIC PULSE DIALING If your local telephone system does not support touch tone dialing the way your modem acts depends on how it is configured If your dial string includes the P dial command modifier or you have previously issued the P command the modem will pulse dial If your dial string includes the T dial command modi...

Страница 24: ... a call comes in while you are online you may either lose data or be disconnected Please refer to your local telephone book or phone company for directions on how to do this In many locations you can disable call waiting by placing 71 or 70 followed by a comma to pause the dialing command for two seconds in the dial string either just before or after the number you are dialing For example you migh...

Страница 25: ...issue the ATA command in terminal mode when you detect an incoming call This makes the modem answer the call immediately The modem goes online when it detects a carrier You set your modem to auto answer In this case your modem automatically answers all incoming calls This section explains how to use auto answer Your modem answers calls automatically auto answer if you set register SØ to a value fr...

Страница 26: ...10 command reports which features your modem supports What is Caller ID If you sign up for this service with your phone company Caller ID allows you to find out who is calling before you answer a telephone call The phone company sends the following information in between the first and the second rings of an incoming call This is why the ring count is off by one ring the date and time of the call t...

Страница 27: ...re web sites at up to twice the speed of 28 800 bps modems Current analog modems allow for a maximum data connection of 33 600 bps between two modems or a single modem and an Internet Service Provider ISP The maximum theoretical transmission rate across the Public Switched Telephone Network PSTN is roughly 35 000 bps This normal data transmission rate is described by Shannon s Law which calculates...

Страница 28: ... bps data speeds every time you connect with another 33 6 Kbps modem Line conditions serial port speed and other factors impact actual connection speeds Unlike earlier modems 33 600 bps modems are designed to modify their actual transmission speeds during a data connection so a minor difference in the phone line can have a significant impact on the connection For example during one attempt to make...

Страница 29: ... rate s possible for the current phone line conditions Without asymmetric rates problems with the modem or the line quality on either side will affect the performance in both directions SELECTING A MODULATION TO CONTROL HIGH SPEED CONNECTIONS If your modem uses the V 34 or K56flex protocol you can display and control the modulation your modem uses to negotiate a connection by entering the AT MS co...

Страница 30: ...ommand The modem displays the selected values in the following order mod automode min rate max rate For example if you enter AT MS CR your modem might display MS K56 1 300 56000 0 0 This display means that the values currently selected on your modem are V 34 with automode enabled The minimum rate is set at 300 bps and the maximum rate is set at 56 000 bps The mod Parameter To specify a preferred m...

Страница 31: ... or V 32bis Annex A If your modem cannot make a connection at that speed it automatically negotiates the rate downward until a connection is made For example if you issue the command AT MS V32B 1 1200 14400 the modem starts negotiating the rate downward from V 32bis 14400 bps if a connection is not made If you set automode to zero and if a V 32bis connection cannot be made the modem will not try a...

Страница 32: ...obbed bit signaling generation in a server modem or enables or disables robbed bit signaling detection in a client modem The options are Ø Robbed bit signaling generation server modem or detection client modem disabled default 1 Robbed bit signaling generation server modem or detection client modem enabled Note that ATZ will reset the rb_signaling selection to Ø disabled Factors that Affect the AT...

Страница 33: ...ing Cable If your modem didn t come with a cable or you ve lost your cable your local dealer should be able to provide you with one that supports hardware handshaking When you ask for a new cable be careful to specify that it needs to support hardware handshaking If your modem came with a cable it supports hardware handshaking Using Hardware or Software Flow Control Enable hardware RTS CTS flow co...

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Страница 35: ...COMMANDS HALF DUPLEX FULL DUPLEX AUDIO VOICE MESSAGING SPEAKERPHONE AND TELEPHONE ANSWERING DEVICE FEATURES VOICE COMMANDS The following AT commands are used to control your modem s voice capabilities As with other AT commands three command forms are available You can use these forms to View the range for the command s parameters AT cmd View the current settings AT cmd Change the current settings ...

Страница 36: ...adaptive answers 8 Voice Audio mode This is the main setting the DTE uses to effect directed or adaptive answer or originate sequences involving voice modes All telephone calls initialized by CLS 8 result after answer or successful call progress in the modem entering Online Voice Command Mode AT Command Notes VLS Returns the current setting of the VLS command as an ASCII decimal value in result co...

Страница 37: ...one support issue ATi10 from terminal mode Hands Free Phone support is Feature 176 Hands Free Phone support provides speakerphone functions in half duplex audio Most speakerphone circuits are half duplex They are designed to transmit in only one direction at a time so the person talking gets the line If you have Feature 177 your modem supports a Full Duplex Speakerphone Full duplex speakerphone ci...

Страница 38: ...rce impedance should be greater than 1K ohms and the output rated at 8VRMs If a speaker with lower source impedance is used the modem s ability to connect with other modems may be compromised SPEAKERPHONE AND TELEPHONE ANSWERING DEVICE FEATURES Your modem may support use of a Telephone Answering Device TAD Refer to the AT VLS command and consult the manual for the voice speakerphone software on th...

Страница 39: ...tion at specific connection rates V 17 V 29 and V 27ter V 17 defines communication at various speeds up to a maximum of 14 400 bps V 29 defines speeds up to 9600 bps and V 27ter defines speeds up to 4800 bps Most fax machines today communicate at 9600 bps technological advances and the proliferation of faxmodems supporting V 17 has made 14 400 bps fax connections more common A connection begins wh...

Страница 40: ...nd Screen fonts or to obtain the printer font you need RESOURCES FOR FAX PROGRAMMERS Available fax software should provide all the fax functions most users need However if you are an advanced programmer and want to write fax software you can obtain information about fax commands by searching International Telecommunications Union ITU T and or Telecommunications Industry Association TIA web sites o...

Страница 41: ...ndard makes video phone communication possible over standard phone lines by directing the modem how to convert video phone data from synchronous to asynchronous mode for transmission across analog telephone lines In addition to video phone capability the V 80 standard also provides the AT ES Error Control Selection Refer to the AT commands section of the AT Command list Appendix B for additional i...

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Страница 43: ...port Wizard under Support To use the information in this section follow these steps 1 Try the suggestions in Check Your Equipment and Configuration 2 Scan the text in the section that pertains to your situation until you find a problem description similar to yours 3 Try using the possible solutions It is most helpful to keep notes on what you try and what result you get 4 If the problem persists s...

Страница 44: ... icon and go to the Device Manager 2 Click on Modems in Device Manager Remove all modems listed by selecting one clicking on Remove then repeating for each modem until they are all removed When you remove an item Windows 95 provides a warning Click OK when the warning appears 3 Click on Ports in Device Manager Remove all the COM ports except those which are enabled To remove a COM port select it a...

Страница 45: ...eps can be used to determine your port address and reinstall your modem However it is recommended that you contact Technical Support before using Debug 1 Select Start and chose Shutdown Turn off your computer 2 Remove your modem from the computer 3 Turn your computer back on When the words Starting Windows 95 appear press the F8 key 4 From the Startup Menu select Safe Mode Command Prompt Only 5 No...

Страница 46: ...r computer Restart the computer Your modem configures properly Your modem still does not work after completing the above steps The resources may need to be changed manually 1 In Windows 95 select Start choose Settings and select Control Panel Select the System icon and go to the Device Manager 2 Click on Modem 3 Click on Ports Double click the specific port select Resources and uncheck Use automat...

Страница 47: ...ating Windows 95 does not reserve resources for the device leaving IRQ 4 available for your modem Installing multiple Plug and Play modems You can install multiple Plug and Play modems in one computer and use the standard COM ports 1 4 and none of Windows 95 virtual COM 5 9 ports If you have multiple Plug and Play devices in one machine unchecking the Use Automatic Settings box in Device Manager b...

Страница 48: ...ftware is not working properly Verify that the correct COM port and modem choice was selected Then test the modem in a terminal program Hyperterminal or MoreInfo in the Win95 Modem Diagnostic If these work or the modem works in other software refer to your software manual for assistance Your computer is not sending data to your modem as determined with the SD or RD light on external modems The mod...

Страница 49: ...pe code to switch from online state to command state or Your computer is set to a rate other than 300 1200 2400 9600 19 200 38 400 57 600 or 115 200 Use your software to change your computer rate to one of these rates or Result Codes may be disabled Issue the ATQ command or your computer s serial port is not working properly external modems only Contact your local computer dealer for assistance Yo...

Страница 50: ...one line is plugged into LINE and your optional telephone is plugged into PHONE or You have too many devices on the line Try unplugging other phone devices connected to your phone line You might also try adding an X to the end of your initialization string or Your Digital or PBX does not support modems Your PBX system must be equipped with standard analog lines for your modem or Your modem may not...

Страница 51: ...an try to make a Normal connection Your modem is not recognizing busy signals or your modem is interpreting other signals from the remote location as busy signals Be sure the country code is set properly Feature 120 if your modem supports it Be sure your modem is set to recognize dial tone and busy signal by adding an X2 to the end of your initialization string Contact Technical Support for assist...

Страница 52: ... Line Noise Line noise is frequently a source of problems with high speed modem connections The following discussion provides an overview of potential problems with suggestions for troubleshooting Line noise is not a common cause of problems during fax calls If it is one of the following may occur Your modem is able to connect but fax transmissions are flawed unreadable faxes missing sections Your...

Страница 53: ...t between the remote server and the one you are dialing into may be slow The server you have dialed into may be slow The remote system may have many users on it which slows it down You may find your best download speeds on many services are late at night when fewer users are on the service And some services are notorious for slow downloads in general A download of 600 800 cps on a CompuServe 14 40...

Страница 54: ...ograms Windows Explorer 4 Browse to your CD drive and select it 5 Look at the names of the files that are listed in the right side of the Explorer window Find the files that end with b or vxd Write down their names Do not write down the files ending with inf 6 Quit Explorer and remove the CD ROM 7 Search for the names of the files you wrote down Start Find Delete them from your computer ...

Страница 55: ...ceded by the letters AT The first command for example is issued as ATA A Answer Phone Line B BELL ITU Protocol Compatibility BØ Selects ITU protocol and V 22 at 1200 bps B1 Selects Bell 212A at 1200 bps D Dial Command Modifier Dials any mixed string of dialing commands See Dialing If a number is blacklisted or delayed this command displays BLACKLISTED or DELAYED rather than dialing This may also h...

Страница 56: ...try code for country PSTN signals are configured for I7 Reports DSP model and version code I92 Reports product code ID number of the modem L Speaker Volume Sets speaker volume Low Sets volume Medium Sets Volume High L Total Volume Gain Adjustment Requires Feature 148 L 00 Lowest gain L 31 Highest gain M Speaker Control 0 Always off 0 Turns speaker On during handshaking and off while receiving carr...

Страница 57: ... rate X Dialing Mode CONNECT Result Codes Blind dial ignore dial tone and busy signal and send CONNECT no rate when connected Blind dial send Result Codes set by Wn and S95 Wait for dial tone before dialing do not detect busy signal send Result Codes set by Wn and S95 when connected Follow busy signal but ignore dial tone send codes set by Wn and S95 when connected Send codes set by Wn and S95 whe...

Страница 58: ...tes a QØ Q5 Q6 b Q1 Q4 c Q2 Q3 F Load Factory Default Configuration FØ Restore factory configuration default for PCs with hardware flow control error correction and data compression active F1 Restore factory configuration default for MACs with hardware flow control error correction and data compression active Note For Direct Connect Mode use AT N1 KØ Q6 D2 G Guard Tone Selection Set automatically ...

Страница 59: ...odem returns to Async Q2 Synchronous Mode 2 Modem dials number in stored location Ø when DTR goes from Low to High Q3 Synchronous Mode 3 Dial number manually on a telephone and then bring DTR High to let the modems connect Q4 Not used Q5 Asynchronous Reliable mode most common default Q6 Asynchronous Normal mode CAUTION These settings will prevent most Mac OS machines from being able to communicate...

Страница 60: ... 0 default Y1 Load profile 1 Zx n Write telephone number n into register number x 0 3 Requires NVRAM Feature 120 Reports Typical Results Notes Termination Reason LINK DISCONNECT Last TX rate 28800 BPS Highest TX rate 28800 BPS Last RX rate 6400 BPS Highest RX rate 26400 BPS Protocol LAPM Compression V42Bis Line Quality 018 RX Level 025 Highest Rx State 67 Highest Tx State 67 EQM Sum 0062 RBS Patte...

Страница 61: ...ating Mode NØ Normal mode Carrier and port rate may differ No MNP or V42 forces Q6 N1 Direct mode Carrier rate matches port rate No MNP or V42 forces Q0 N2 Reliable mode A V42 or MNP connection must be made or the modem will hang up forces Q5 S36 4 S48 7 N3 AutoReliable mode Default mode where all connections are supported forces Q5 S36 7 S48 7 N4 LAPM mode A V42 connection must be made or the mod...

Страница 62: ...nn 8 to 20 signal good best carrier rate for line conditions nnn 21 to 30 signal poor lower carrier rate should be used Modem tends to renegotiate DOWN to a lower rate nnn 31 to 127 signal very bad or gone try forcing a lower rate Modem tends to RETRAIN For V 34 carriers approx values below apply nnn 0 to 19 signal excellent higher rate may be used Modem tends to rate renegotiate UP to a higher ra...

Страница 63: ...maximum symbol rate the line will support Symbol rate Symbols per second on the connection TX Carrier If the symbol rate is below 3429 there are two available carrier frequencies a high carrier and a low carrier The actual frequency of the carriers varies with the symbol rate High or Low are the only items displayed 33 600 bps connections require a 3429 symbol rate RX Carrier Same as above on rece...

Страница 64: ...is may happen if I frames are retransmitted due to the expiration of T401 and a REJ SREJ is received for the original transmission of the I frames NC Display Country Codes and Configurations Supported Modems support various country code settings ATi6 reports currently configured setting Check your modem for supported PSTN parameters This command returns ERROR on units without NVRAM i e most SupraE...

Страница 65: ...e modem in Online Voice Command Mode LCD LCD Displays LCD Ø STRING Mode disabled default LCD 1 STRING String is displayed on LCD Line 1 LCD 2 STRING String is displayed on LCD Line 2 For example if you issue AT LCD 1 My fast Supra CR your modem will show MY FAST SUPRA on the top line Or if you issue AT LCD 1 4D7920466173742053757072612021 CR your modem will show MY FAST SUPRA on the top line The A...

Страница 66: ...ters Online Voice Command Mode VRN n Where n defines the period without ringback after dialing in 100 ms units SDR Distinctive Ring Requires Feature 156 Bits set high in this register enable the corresponding Distinctive Ring detection and Result Code Bits disabled set normal ring detection only Range Ø 7 Default Ø Saved in NVRAM via W NOTE Current code does not discriminate between short 0 4 seco...

Страница 67: ...eset 0 These values and S80 are saved in NVRM via Wn The orig_rqst parameters are direction 0 No compression 1 Transmit Only compression 2 Receive Only compression 3 Bi Directional compression comp_neg 0 Do not require V 42bis compression when connecting dict_size 1024 V 43bis dictionary size for bi directional compression 2048 V 42bis maximum dictionary size for bi directional compression default...

Страница 68: ...ble if error control is not established maintain DTE DCE data rate and use buffered mode with flow control during non error control operation default 1 Error control optional either LAPM or Alternative acceptable if error control is not established change DTE DCE data rate to match line rate and use Direct mode 2 Error control required if error control is not established disconnect 3 LAPM required...

Страница 69: ...flag This is while operating in Framed sub Mode The framed_idle parameters are ans_fbk 0 Direct mode 1 EC disabled buffered mode 3 EC optional if no EC use Direct mode 4 Error control required if no EC disconnect 5 Error control optional only LAPM acceptable if error control is not established disconnect 6 MNP error control required if no MNP disconnect 7 Synchronous mode 8 V 80 Synchronous access...

Страница 70: ...d in section 12 V 34 shall be performed by the DCE when switching from primary channel to secondary channel operation and vice versa The hd_auto parameter is The crc_type parameter specifies the CRC polynomial used while operating in Framed sub Mode The crc_type parameter is framed_un_ov 0 In Framed sub Mode DCE transmits HDLC abort when underrun during a frame default 1 In Framed sub Mode DCE tra...

Страница 71: ...e W command ESR Selective Repeat LAPM SREJ Control This command controls the use of the selective repeat SREJ option in V 42 if present in the DCE The formats for AT ESR are ES R Returns current setting ESR Returns command range s ESR value The value parameters are GCAP Request Capabilities List Display one or more lines of information reporting the V 25ter commands available in your modem GMI Man...

Страница 72: ...S mod automode minimum rate maximum rate CR Omitted values remain at the current setting mod specifies the PREFERRED modulation as per the list below Either verbose or numeric mod selections can be used but verbose settings are reported on threshold 10 to 759 bytes off threshold 11 to 760 bytes report period Ø Disables transmit level reporting 5 to 100 Delay in 10ms units between transmit buffer l...

Страница 73: ...400 24000 19200 16800 14400 12000 9600 7200 4800 or 2400 12 V90 V 90 56000 54667 54000 53333 52000 50667 50000 49333 48000 46667 46000 45333 44000 42667 42000 41333 40000 38667 38000 37333 36000 34667 34000 33600 33333 32000 31200 30667 29333 28000 Default 56 K56 K56flex 56000 54000 52000 50000 48000 46000 44000 42000 40000 38000 36000 34000 32000 64 B103 Bell 103 300 69 B212 Bell 212 1200 1 See o...

Страница 74: ...e remote modem If this succeeds data subsequently received from the remote modem is sent to the DTE in facsimile format If the physical connection fails the FCERROR result code is returned FRM MOD Receive facsimile data using modulation MOD FTH Transmit Facsimile Data HDLC A physical connection with the modulation type specified by MOD is first established Data received from the DTE is then transm...

Страница 75: ...rves as command line terminator and result code terminator S4 Line Feed Character range Ø 127 default 10 The ASCII value of the line feed control character S5 Backspace Character range Ø 32 default 8 The ASCII value of the backspace control character S6 Time to Wait before Blind Dial range 2 255 default 2 units seconds The maximum time to wait for a dial tone after going off hook before dialing a ...

Страница 76: ... between tones is equal to the duration of each tone The default depends on your modem model S12 Escape Prompt Delay EPD range Ø 255 Ø disables timer default 50 units 1 50 second The delay required before and after entering the escape code S24 Sleep Inactivity Timer range Ø 255 default disable Ø The number of seconds before the modem enters sleep mode without either DTE or phone line activity On e...

Страница 77: ...8 is between Ø and 254 your modem waits for the seconds from H command for the remote modem to acknowledge all data in the modem buffer before disconnecting NO CARRIER indicates time expired before all data was sent and data has been lost OK indicates all data was transmitted If S38 is 255 the modem attempts to deliver data in the buffer until the connection is lost or the data is delivered S40 In...

Страница 78: ... default Ø S86 records the first event that contributes to a NO CARRIER message Value Failure Cause Ø Local request 1 3 Undefined error code 4 Carrier loss 5 No error correction Remote does not support EC 6 No error correction No response to feature negotiation 7 Incompatible protocol local modem is ASYNC remote is SYNC 8 Incompatible protocol No framing technique in common 9 Incompatible protocol...

Страница 79: ...79 14 Protocol violation 15 DTR loss 16 GSTN cleardown 17 Inactivity timeout 18 Incompatible speeds 19 BREAK disconnect 20 Key Abort 21 V42bis Protocol Violation Value Failure Cause ...

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Страница 81: ... result codes ATV Displays result codes as numbers ATV1 Displays result codes as words default ATW Reports computer DTE rate only as CONNECT DTE default ATW1 Reports computer rate as CARRIER DCE PROTOCOL CONNECT DTE ATW2 Reports connection DCE rate only as CONNECT DCE SAMPLE RESULT CODES The following result codes are returned when your computer rate is set to 38 400 bps in your telecommunications...

Страница 82: ... same example ATWØ would return only CONNECT 38400 computer rate and ATW2 would return only CONNECT 9600 connection rate DETERMINING WHICH RESULT CODES TO USE The result code commands you need depend on your software The factory default settings ensure compatibility with most software MODEM RESULT CODES Word Form Numeric Form OK Ø CONNECT 300 bps 1 RING 2 NO CARRIER 3 ERROR 4 CONNECT 1200 5 NO DIA...

Страница 83: ...in sec of delay 24 BLACKLISTED 32 FAX 33 CARRIER 300 V 21 or Bell 103 40 CARRIER 600 42 CARRIER 1200 75 V 23 44 CARRIER 75 1200 V 23 45 CARRIER 1200 V 22 or Bell 212A 46 CARRIER 2400 V 22bis or V 34 47 CARRIER 4800 V32 V 32bis or V 34 48 CARRIER 7200 V 32bis or V 34 49 CARRIER 9600 V32 V 32bis or V 34 50 CARRIER 12000 V 32bis or V 34 51 CARRIER 14400 V 32bis or V 34 52 Word Form Numeric Form ...

Страница 84: ... 55 CARRIER 24000 56 CARRIER 26400 57 CARRIER 28800 58 CONNECT 16800 59 CONNECT 21600 61 CONNECT 24000 62 CONNECT 26400 63 CONNECT 28800 64 COMPRESSION CLASS 5 MNP5 66 COMPRESSION V 42BIS BTLZ 67 COMPRESSION NONE 69 PROTOCOL NONE 70 PROTOCOL LAPM 77 CARRIER 31200 78 CARRIER 33600 79 PROTOCOL ALT 80 PROTOCOL ALT CELLULAR 81 Setting up for flash download 82 CONNECT 33600 84 PROTOCOL MNP 85 Word Form...

Страница 85: ...55 CARRIER 44000 157 CARRIER 48000 158 CARRIER 50000 159 CARRIER 52000 160 CARRIER 54000 161 CARRIER 56000 162 CONNECT 32000 165 CONNECT 34000 166 CONNECT 36000 167 CONNECT 38000 168 CONNECT 40000 169 CONNECT 42000 170 CONNECT 44000 171 CONNECT 46000 172 CONNECT 48000 173 CONNECT 50000 174 CONNECT 52000 175 CONNECT 54000 176 CONNECT 56000 177 RINGING 200 Word Form Numeric Form ...

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Страница 87: ...r equivalence number REN for your modem these numbers are located on the modem s FCC label NOTICE The Ring Equivalence Number REN assigned to each terminal device denotes an indication of the maximum number of terminals allowed to be connected to a telephone interface The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the Ringe...

Страница 88: ...u may find this booklet helpful How to Identify and Resolve Radio and TV Interference Problems Stock No 004 000 00345 4 prepared by the FCC and available from the U S Government Printing Office Washington DC 20402 See individual modems for FCC ID and registration numbers FCC REGULATIONS ON FAX BRANDING The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer...

Страница 89: ...omer should be aware that compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be coordinated by a representative designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipme...

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Страница 91: ...ions the length of time between transmitted characters is not uniform The receiving modem must be signaled with Start and Stop bits as to when the data bits of a character begin and when they end Audio Frequencies The frequencies which the human ear can detect usually in the range of 15 to 20 000 Hertz Only those from 300 to 3 000 Hertz are transmitted through the phone Audio Full Duplex An audio ...

Страница 92: ...bit rate BIOS See Basic Input Output System BIOS Bits Per Second bps The number of binary digits or bits transmitted per second See also Bit Rate Bit Rate The number of binary digits or bits transmitted per second Caller ID Caller ID is a way for the recipient of a call to find out information on the caller Between the first and second ring of an incoming call the phone company sends information s...

Страница 93: ...MS DOS consults this file at system startup Connection Rate The rate at which modems communicate over a phone line Synonyms Transmission Speed Line Speed Carrier Rate Modem Modem Speed DCE DCE Rate CTS Clear to Send Signal See Hardware Handshaking Data Carrier Detect DCD Signal from the modem or printer DCE to the DTE your computer to indicate that the modem is receiving a carrier signal from the ...

Страница 94: ...canceling are used in voice and data applications Error Correction The process of verifying the accuracy of transmitted data and retransmitting data that did not transfer successfully Error Correction Data Compression Protocols Protocols that increase the amount of data that can be transferred data compression and or improve the accuracy of transmissions error correction Some are MNP 2 5 V 42 V 42...

Страница 95: ... of a communication session that establishes an active configuration Initialization strings enable communications programs to work smoothly with a variety of modems and often you can choose an initialization string appropriate for your modem from a list provided in your communications program See initialization Interrupt Request IRQ Signal used by a device such as a mouse to inform the CPU that it...

Страница 96: ...ons channel such as radio or telephone lines Another modem at the other end can decode the tones back into the original data Fax modems are modems that can also communicate with fax machines in addition to their data communications NVRAM Nonvolatile random access memory User programmable memory whose data is retained if the device is turned off Negotiation The process where your modem and the remo...

Страница 97: ...some or all of the ringers may not work In some cases the maximum REN may be lower Check with your local phone company if you are interested in the exact maximum REN for your line Most Supra modems have a REN of 0 3 REN is also called the Load Number in some cases RTS CTS Request to Send Clear to Send See Hardware Handshaking Silent Answer Silent Answer allows your modem to listen in on an incomin...

Страница 98: ...ing keypad though some keypad phones use pulse dialing All Supra modems can use either tone or pulse dialing Trunk Line The path connecting your phone system to the phone company s Central Office TSR See Terminate and Stay Resident UART Universal Asynchronous Receiver Transmitter UART chips control the serial port s on personal computers The UART is a device usually a integrated circuit chip that ...

Страница 99: ...rics 0 9 Dial Command modifier 22 33 6K Connections 28 56K Connections 27 A A Direct Command 55 Active Configurations 12 A D Dial Command modifier 22 Adaptive Answer Definition 91 Analog Signals 91 Answering Auto Answer 25 Calls 25 Techniques 25 Asymmetric Rates 29 91 Asynchronous 91 AT Commands 61 CID n 64 CLS 36 64 LCD n s 65 VLS 36 65 VRN 66 C 61 E 61 G 62 L 62 Q 62 Q1 62 Q2 63 C 58 D 58 F 58 G...

Страница 100: ... Other Modems 50 Computer Rate 93 Configurations Active 12 Factory Default 58 Stored 12 CONNECT Result Code 23 Connecting 11 41 Connection Rate 93 55 D Data bits 51 Data Compression 14 93 DCE 93 Default Configurations 12 Dial Command Modifiers 21 Dialing Procedures 21 Stored Telephone Number 23 Digital Signals 93 Direct Connection 93 Distinctive Ring Definition 94 Downloads slow 53 DTE 94 Duplex 9...

Страница 101: ... Mod Parameter 30 Multitasking 53 N Negotiation Definition 96 Negotiation 14 NO CARRIER 23 Normal Connection 96 O Online 96 P P Dial Command modifier 22 Parameter ans_fbk 69 crc_type 70 framed_idle 69 framed_un_ov 70 hd_auto 70 nrzi_en 71 orig_rqst 67 syn1 71 syn2 71 trans_idle 69 Parity 51 Physical Protocols 97 Problems Compatibility 50 High Speed Connections 52 53 Trying to Connect 49 Problems S...

Страница 102: ...bits 51 Storing Configurations 12 Telephone Number 23 Synchronous 97 T T Dial Command modifier 22 Terminal Mode 17 Throughput 98 Tone Dialing 98 Transmit Flow Control Thresholds 71 Trunk Line 98 V V 42bis 14 Voice Commands 35 Voice Features 35 W W Dial Command modifier 22 Windows 3 1x Problems 48 Windows 95 not detecting modem 46 48 ...

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