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4-18

Issue 3 April 1994

Table 4-1. AT Command and S-Register Reference (17 of 27)

AT
Command
or
S-Register

Description

Error Control Mode

This command determines the type of error control
used by the modem.

\N0

Buffer mode

\N1

Direct mode

\N2

MNP or disconnect

\N3

MNP or buffer

\N4

LAPM or disconnect

\N5

LAPM or buffer

\N6

V.42/MNP or disconnect

\N7

V.42/MNP or buffer

Flow Control of Computer and Modem

This command controls two different configuration
options. Flow Control of Computer determines how the
modem controls the flow of data from the computer.
Flow Control of Modem determines how the computer
controls the flow of data from the modem.

Flow Control of Computer

\Q0, \Q5, \Q6 Disable

\Q1, \Q4

XON/XOFF

\Q2, \Q3

CTS to computer

Flow Control of Modem

\Q0, \Q2,\Q4

Disable

\Q1, \Q5

XON/XOFF

\Q3, \Q6

RTS to modem

Содержание KeepInTouch 3760

Страница 1: ...You have accessed an older version of a Paradyne product document Paradyne is no longer a subsidiary of AT T Any reference to AT T Paradyne is amended to read Paradyne Corporation...

Страница 2: ...3760 A2 GB91 20 Issue 3 April 1994 KeepInTouch Card Modem Models 3760 3762 3763 and 3764 User s Guide Paradyne...

Страница 3: ...hantability or fitness for a particular purpose Further AT T Paradyne Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obl...

Страница 4: ...Refer to the enclosed Warranty Card for more information 1 Read and follow all warning notices and instructions marked on the product or included in the manual 2 Do not attempt to service this produc...

Страница 5: ...m Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations Never touch uninsulated telephone wires or terminals unless the telephone line has been disc...

Страница 6: ...mber of devices that may be connected to the line as determined by the total RENs contact the telephone company to determine the maximum RENs for the calling area 4 If the modem causes harm to the tel...

Страница 7: ...learly contains in a margin at the top or bottom of each transmitted page or on the first page of the transmission the date and time it is sent and an identification of the business or other entity or...

Страница 8: ...e separation between the equipment and receiver G Connect the equipment into an outlet on a circuit different from that to which the receiver is connected G Consult the dealer or an experienced radio...

Страница 9: ...ocal telecommunications company The equipment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service...

Страница 10: ...100 If your equipment is in need of repair return it to its place of purchase or arrange to have your equipment repaired by contacting Inventory Control Office 100 York Blvd Suite 200 Richmond Hill O...

Страница 11: ...ting approximately the maximum number of items of apparatus that should be connected simultaneously to the telephone line The sum of the RENs should not exceed four This value includes any BT provided...

Страница 12: ...from a competent engineer before installing other adapters into the hoist equipment The equipment must be installed such that with the exception of the connections to the host clearance and creepage...

Страница 13: ...n Procedures 2 1 Model 3763 and Model 3764 Installation Procedures 2 4 G Configuring Your PC to Use the KeepInTouch Card Modem 2 5 G Fax Application Software 2 7 G Using Hayes AutoSync 2 7 3 Using You...

Страница 14: ...hnical Specifications B 1 C Result Codes C 1 D Cellular Communications G Connecting your Modem for Cellular Operation D 1 Direct Connection to a Cellular Telephone D 2 Connection to a Cellular Telepho...

Страница 15: ...Non ETC Modems D 6 Placing a Call Through a Public Switched Telephone Network PSTN D 6 Placing a Call Through a Modem Pool D 7 G Fax over Cellular D 7 G Tips for Successful Cellular Operation D 8 G O...

Страница 16: ...iv Issue 3 April 1994 Figures 1 Introduction G 1 1 Supplied Equipment 1 3 2 Installation G 2 1 Model 3760 and Model 3762 Modem Installation 2 2 G 2 2 Model 3763 and Model 3764 Modem Installation 2 4...

Страница 17: ...Modem Health A 2 G A 2 Modem Computer Connection A 3 G A 3 Modem Telephone Line Connection A 4 G A 4 Online Operation A 9 G A 5 Fax Operation A 10 B Technical Specifications G B 1 Technical Specificat...

Страница 18: ...anywhere around the world The KeepInTouch Card family of modems includes Models 3760 3761 3762 3763 and 3764 This manual contains information on Model 3760 Model 3762 Model 3763 and Model 3764 Model 3...

Страница 19: ...64 also support transmission over a cellular network These models use the ETCt Enhanced Throughput Cellular protocol which improves data communications over cellular telephone channels For more inform...

Страница 20: ...support software diskette 3 5 containing both configuration and utility programs and help text files which contain instructions on how to use the utility programs as well as detailed information on th...

Страница 21: ...fer files to and from your PC receive electronic mail e mail dial into bulletin boards etc G If fax operations are desired you will also need fax application software to control fax operation if not s...

Страница 22: ...your modem was included in a PC purchase your PC vendor may have loaded the files from the diskette onto the hard drive for you G The help text files are also available on a Bulletin Board System BBS...

Страница 23: ...on describes how to install Models 3760 3762 3763 and 3764 of the KeepInTouch Card modem Please take a minute to review these procedures before installing your modem Model 3760 and Model 3762 Installa...

Страница 24: ...IA socket on your PC Refer to your PC s user s guide for more information about the PCMCIA socket 2 Hold the modem so that the product logo label is facing up and the 68 pin connector is facing the PC...

Страница 25: ...lar Communications Plug the modular cord s 2 pin connector into the modem s 2 pin rear edge connector Since the 2 pin connector is not keyed it does not matter which way it is plugged in Next plug the...

Страница 26: ...del 3764 Modem Installation 1 Locate an unused PCMCIA socket on your PC Refer to your PC s user s guide for more information about the PCMCIA socket 2 Hold the modem so that the product logo label is...

Страница 27: ...eepInTouch Card Modem After installing the modem in your PC you need to configure your PC to recognize your KeepInTouch Card modem Some KeepInTouch Card modems are shipped with an Installation Utiliti...

Страница 28: ...ure your modem do not proceed to Step 4 Your PC is now set up to recognize your KeepInTouch Card modem in the PCMCIA slot If your PC does not include these drivers or if you are unsure proceed to the...

Страница 29: ...r AutoSync is available in Model 3762 and Model 3764 The Hayes AutoSync feature allows your modem to establish a call between an asynchronous computer and a synchronous mainframe computer The advantag...

Страница 30: ...with the standard Hayes AT command set the most common commands used throughout the industry and also uses what is known as an extended AT command set those commands unique to the KeepInTouch Card mod...

Страница 31: ...ommands described in this manual with the suffix n have several options associated with them For example in the En command E0 disables the modem s ability to echo characters back to your screen while...

Страница 32: ...ng and can be included in the dial string to enhance readability Pause Causes the modem to pause before processing the next character in the dial string The length of this pause is determined by the v...

Страница 33: ...call using tone dialing TYPE ATDT 5551234 where D is the dial command T is the Tone dialing modifier and 555 1234 is the telephone number PRESS Enter If you would like to know more about the function...

Страница 34: ...btle approach to hanging up a call is to make sure that the D command is set to D2 the factory default setting which is standard EIA RS 232 operation This will allow your communications software to dr...

Страница 35: ...ing Modem Settings Modem settings determine how the modem functions These settings are known as configuration options and are stored in two permanent memory areas User 0 and User 1 When the modem is i...

Страница 36: ...de Data mode is a state where any entries made from the computer are considered data and are transmitted and received between modems The modems remain in Data mode until the connection is broken with...

Страница 37: ...data rate the speeds at which data is transferred over the telephone line These rates are measured in bits per second For example a V 32 bis modem can operate at data rates ranging from 14 400 bps to...

Страница 38: ...A download occurs when you want to receive a file from a host site An upload occurs when you want to send a file to a host site However before you can do this the following must occur G Your modem and...

Страница 39: ...s Refer to your communication software s user s guide for more information on AT command support Before sending or receiving a fax verify the following G Your modem and PC must be configured for modem...

Страница 40: ...ommand it responds with a message known as a result code that displays on your monitor Result codes are described in Appendix C For a brief overview of command guidelines refer to the Using AT Command...

Страница 41: ...ming call Bn CCITT Bell Mode This command selects whether the modem uses the CCITT V 21 and V 22 protocols or the Bell 103J and 212A protocols for operation at 300 or 1200 bps It also determines wheth...

Страница 42: ...les automatic cellular setup C1 Disables automatic cellular setup Dn Dial This command allows the modem to begin the dialing sequence of the dial string n modifiers and telephone number DL Dial Last N...

Страница 43: ...only see I19 for full display I2 Performs an EEPROM check I3 Displays serial number I4 Displays alphanumeric modem number I5 Displays circuit card part number I6 Displays software part number I9 Displ...

Страница 44: ...exit Online Command mode and return to Data mode P Pulse Dial Used with rotary telephone lines This command configures the modem for Pulse dialing To disable Pulse dialing issue the T tone dial comman...

Страница 45: ...e different configuration options Extended Result Codes allow additional information to be displayed with the result code Dial Tone Detect if enabled causes the modem to wait up to 10 seconds for a di...

Страница 46: ...es 5 16 and dial tone detect disables busy tone detect X3 Enables extended result codes 5 16 disables dial tone detect enables busy tone detect See above note concerning blind dialing X4 Enables exten...

Страница 47: ...This command loads the settings of either the User 0 or User 1 permanent storage area into the Active memory locations Z0 Loads User 0 configuration options into Active Z1 Loads User 1 configuration o...

Страница 48: ...An ATO returns the modem to Online mode D2 Follows standard RS232 operation When DTR turns Off the modem disconnects D3 Reloads the contents of User 0 ATY0 or User 1 ATY1 into the Active memory area w...

Страница 49: ...d to a cellular telephone through an RJ11 adapter box Not supported by Model 3760 and Model 3763 as these models do not support cellular operation F6 Loads the ETC protocol Use this setting when the m...

Страница 50: ...Permissive 9 dBm J0 Transmit Level This command sets the modem transmit level to the maximum value in Permissive mode 10 dBm NOTE The transmit level cannot be changed in some countries outside of Nort...

Страница 51: ...esponds to the Ready to Send RTS signal input from the computer R0 Follows standard RS 232 operation R1 Ignore R2 Simulated Control Carrier Sn DSR Control This command controls the Data Set Ready DSR...

Страница 52: ...T6 T7 and T8 can also be performed in Buffer mode N0 The test invoked by commands T1 T8 run until the T0 command Abort is issued T0 Stops any test in progress and displays results T1 Local Analog Loo...

Страница 53: ...ptions stored in User 1 V4 Displays telephone numbers stored in directory locations 1 and 2 V8 Displays modem status information for troubleshooting V1n Displays a continuous scroll of the View comman...

Страница 54: ...lephone Numbers Stores telephone number n into directory x 1 and 2 An Maximum Frame Size This command determines the maximum frame or block size used for V 42 or MNP 4 2 error control operation For ex...

Страница 55: ...nterval in which the modem attempts to establish a connection using V 42 or MNP error control Online changes to this option do not take effect until a disconnect occurs C0 Disable C1 Enable C2 Disable...

Страница 56: ...ta or a break in the event that a break sequence is sent from the computer Break Forces Escape determines whether or not the modem should enter Command mode when it receives a break sequence from the...

Страница 57: ...5 LAPM or buffer N6 V 42 MNP or disconnect N7 V 42 MNP or buffer Qn Flow Control of Computer and Modem This command controls two different configuration options Flow Control of Computer determines how...

Страница 58: ...m the locally attached computer through to the remote modem X0 Disable do not pass XON XOFF X1 Enable An Error Control Fallback This command allows you to change the ASCII value of the error control f...

Страница 59: ...ace The changes made by this command are volatile and cannot be saved When the modem is reset autobaud is once again enabled R Enable autobaud R300 Disables autobaud sets DTE rate to 300 R600 Disables...

Страница 60: ...sequence Accepts an ASCII value from 0 to 127 Factory setting is 43 an ASCII character S3 n Carriage Return Character This register determines the ASCII value used as the carriage return Enter key Acc...

Страница 61: ...out This register determines how long in seconds an originating modem waits before abandoning a call when no answer tone is received Acceptable values vary by country and are listed in Table 4 2 S8 n...

Страница 62: ...increments for the required pause before and after the escape sequence is issued Accepts a value from 0 to 255 in 20 millisecond increments Factory setting is 50 1 second 1000 msec S13 n DTMF Tone Ti...

Страница 63: ...f time in 10 millisecond increments the modem waits after receiving the RTS signal before issuing the CTS signal to the computer Accepts a value from 0 to 255 in 10 millisecond increments Factory sett...

Страница 64: ...tinues attempting to transmit data stored in its buffers after the modem is commanded to disconnect by a locally attached computer This also applies to the modem s receiving buffers when it is command...

Страница 65: ...he S41 register Dial Line Rate 0 Enable 1 Disable S79 n V 17 Fax Disable This register allows you to enable or disable V 17 fax 14 400 bps functionality in your modem This is necessary if your PC fax...

Страница 66: ...isabled the modem issues a cleardown sequence and if so configured a long space prior to disconnecting 0 Disable 1 Enable S89 n V 42 ARQ Window Size Increase This register allows the V 42 ARQ Window S...

Страница 67: ...he computer s DTE data rate to be equal to the VF telephone line data rate This register is not valid if the modem is configured for Direct mode N1 0 Disable 1 Enable S91 n Cellular Enhancements This...

Страница 68: ...United States Canada and United Kingdom Table 4 3 contains information on other features which are country dependent Table 4 2 Country Specific AT Command and S Register Values United States and Cana...

Страница 69: ...ion United States and Canada United Kingdom Hook Flash dial modifier time period 0 5 seconds 80 ms Can transmit level be changed see I J0 Yes No Transmit Levels Permissive 9 dBm 10 dBm Is Blind dialin...

Страница 70: ...urchase your PC supplier may have loaded the files from the utilities diskette onto your hard drive If you did not receive a copy of the diskette check to see if the files are already on your hard dri...

Страница 71: ...all new firmware into your modem from the Bulletin Board System NOTE Model 3760 and Model 3763 modems are not upgradeable Table A 1 Modem Health Symptom Action Modem does not respond Make sure the mod...

Страница 72: ...the communications software has the correct COM port selected Make sure that all AT commands are terminated with a carriage return Use your communications software to verify G that the computer has a...

Страница 73: ...socket are configured for modem operation Make sure the telephone cord is connected to the telephone line connector Make sure the telephone line connector is properly connected to the modem Attach a...

Страница 74: ...ts your modem s modulation schemes The modem recognizes CCITT V 32 bis V 32 V 22 bis V 22 V 21 Bell 212A Bell 103J and V 23 Note that the modem does not support other vendors proprietary modulation sc...

Страница 75: ...e modem Make sure you are using a supported telephone line connector If using AT Dialing refer to the Table A 2 Modem Computer Connection If using DTR Dialing verify that the telephone number stored i...

Страница 76: ...de N0 If both modems use V 32 bis or V 32 modulation set the modem s V 32 bis Train configuration option S Register 43 to Long 0 Intermittent disconnects high error rates or excessive retransmissions...

Страница 77: ...ng a dial tone on the telephone line This type of dialing is known as Blind Dialing NOTE Blind Dialing is not supported in some countries outside of North America Refer to Table 4 3 in Chapter 4 for m...

Страница 78: ...control verify that the modem s parity matches the computer s parity The KeepInTouch Card modem contains a 16550A compatible UART which is useful for high speed data transfers Make sure that your comm...

Страница 79: ...A 5 Fax Operation Symptom Action Modem cannot send or receive a fax Make sure the modem and PCMCIA socket are configured for modem operation Disable V 17 fax by using the S79 command Refer to the Fax...

Страница 80: ...CS 03 UL CSA See modem label for certification number See modem label for registration number 0 4B See modem label for certification number Listed to UL 1950 Certified to CSA C22 2 No 950 Model 3762 F...

Страница 81: ...inted on the modular telephone connector COMPATIBILITY Dial Line Modulations CCITT V 32 bis 14 400 12 000 9600 7200 4800 bps CCITT V 32 9600 4800 bps CCITT V 22 bis 2400 bps CCITT V 22 1200 bps CCITT...

Страница 82: ...orted country outside of North America DIMENSIONS Height Width Length 0 196 inches 5 0 mm 2 126 inches 54 0 mm 3 370 inches 85 6 mm TRANSMIT LEVEL Dial Line Permissive Values vary by country See Table...

Страница 83: ...hips from the factory configured to use the word format If your computer requires that you use the numbers format instead refer to the Qn Vn and Xn commands in Chapter 4 Table C 1 describes the result...

Страница 84: ...Y Busy or trunk busy signal detected 8 8 NO ANSWER No quiet answer 9 9 WRONG CALL Voice detected at the called number available in Europe only 10 10 CONNECT 2400 Connection at 2400 bps 11 11 CONNECT 4...

Страница 85: ...13 CONNECT 14400 REL Connection at 14 400 bps with error control 26 15 CONNECT 7200 REL Connection at 7200 bps with error control 27 5 CONNECT 1200 REL Connection at 1200 bps with error control 40 40...

Страница 86: ...rnal device such as an RJ11 adapter box which generates call progress tones to the modem Direct connection is the preferred method for connecting your modem to a cellular telephone as it offers superi...

Страница 87: ...e connector The connector s slot must face up 2 Attach the other end of the cellular cable to the cellular telephone 3 You may need to upgrade the firmware on your modem to support your specific model...

Страница 88: ...ese three different methods Automatic Cellular Setup for Direct Connection on the Cellular Side Use this feature when the modem is connected to a cellular telephone by a Cellular Direct Connect Cable...

Страница 89: ...non cellular settings F5 Cellular Setup for RJ11 Adapter Connection on the Cellular Side Use the F5 command to configure your modem for cellular operation when the modem is attached to a cellular tel...

Страница 90: ...m s dial transmit level I command If you are using a Spectrum Cellular AXCELLt box then issue the I10 10 dBm command after the F5 command to adjust the modem s dial transmit level For example TYPE AT...

Страница 91: ...he ETC protocol provides a number of enhancements to both the V 42 error control protocol and the V 32 bis modem protocol These enhancements increase modem performance and reliability when communicati...

Страница 92: ...s now offer Cellular Modem Pools These Cellular Modem Pools are highly recommended as they allow your ETC modem to connect to virtually any modem in the world Contact your local cellular service provi...

Страница 93: ...transmission hours Heavy telephone traffic during this period for example rush hour and lunch hour can impair network conditions and affect data transfers Cellular rates are also lower during off pea...

Страница 94: ...s of adjacent geographic regions known as cells Within each cell there is a transmission tower that communicates directly to both the cellular telephone and a Mobile Telephone Switching Office MTSO Th...

Страница 95: ...an cause delays which result in lost data or disconnection Note that a hand off can occur while you are stationary especially during peak periods G Multipath a type of interference that is caused by y...

Страница 96: ...erating an answer tone beginning the handshaking process with the calling modem Async Dial A factory preset configuration area containing the configuration options most often used in asynchronous dial...

Страница 97: ...ansmission Bell 212A An AT T Bell standard for 1200 bps data transmission bps Bits per second Indicates the speed at which data is transmitted between devices buffer A storage area used to compensate...

Страница 98: ...rom a modem The modem connects directly to this port communications software Software installed on a computer that controls the modem configuration option Modem software that sets specific operating p...

Страница 99: ...ed to dial a telephone number digital signal A signal used to transfer data between a locally attached computer and modem download A file transfer in which a file is received from another computer DSR...

Страница 100: ...setting is This sequence lets you switch your modem from Data mode to Command mode extended result codes An asynchronous message in either numbers or words that includes VF data rate and error contro...

Страница 101: ...nnection between two modems I idle state A state in which the modem s configuration options can be modified or commands can be issued to the modem using AT commands L loopback test Any test that verif...

Страница 102: ...ce used to convert data from a digital signal to an analog signal so that data can be transmitted over a telephone line Once the data is received the analog signal is converted back into a digital sig...

Страница 103: ...ional characteristics of a credit card device protocol The rules for timing format error control and flow control during data transmission pulse dialing One of two dialing methods in which telephone n...

Страница 104: ...egisters that contain information affecting the modem parameters All S Registers must be preceded by the AT prefix signal ground Pin 7 of an EIA RS 232 interface synchronous transmission Data transmis...

Страница 105: ...ration options for a specific application User 1 A user defined configuration area containing customized configuration options for a specific application V V 21 A standard for modems operating full du...

Страница 106: ...00 bps on dial or leased telephone lines V 32 bis A standard for modems operating full duplex with asynchronous or synchronous data over dial or leased telephone lines at 14 400 12 000 9600 7200 or 48...

Страница 107: ...F select factory default and ETC configuration 4 10 D 3 G V 22 bis guard tone 4 10 I transmit level 4 11 J permissive mode 4 11 M and Q async sync mode and computer dialer type 4 11 R RTS action 4 12...

Страница 108: ...diagnostic program 2 6 A 1 dial modifiers 3 3 DTR disconnect 3 4 E Enhanced Throughput Cellular B 3 equipment cellular operation 1 4 optional 1 3 required 1 4 supplied 1 2 error control MNP 1 1 V 42 1...

Страница 109: ...one timer OFF 4 24 S18 test time out 4 24 S25 DTR detection 4 25 S26 RTS to CTS delay 4 25 S41 dial line rate 4 25 A 5 S43 V 32 bis train 4 26 S49 buffer disconnect delay 4 26 S76 V 32 bis autorate 4...

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