Texas Instruments TTY Communications, Software Library Manual

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Page 2: ...osed herein and patents which might be granted thereon disclosing or employing the materials methods techniques or apparatus described herein are the exclusive property of Texas Instruments Incorporated No copies of this information or drawings shall be made with out the prior consent of Texas Instruments Incorporated TTY Communications TI Part No 2236856 0001 Original Issue June 1984 ...

Page 3: ...ifically how TTY works It also lists all the equipment you need to commu nicate using TTY protocol Chapter 2 helps you get your computer ready to communicate Chapter 3 describes the various parameters you must set be fore you conduct a TTY session Chapter 4 describes the various commands you use to send and receive information during a TTY session Chapter 5 guides you through a sample TTY session ...

Page 4: ...l terms used in this manual The index helps you find information quickly Other publications that you may need when you use this man ual are as follows Texas Instruments Professional Computer Operating Instructions TI Part No 2238421 0001 MSTM DOS Operating System manual TI Part No 2238442 0001 Synchronous Asynchronous Communications Board option manual TI Part No 2223206 0001 Internal Modem option...

Page 5: ...taching the Cables 2 9 Loading the Software 2 13 Preparing Files 2 14 3 Parameter Setup 3 1 Starting the Program 3 3 First Parameter Display 3 11 Second Parameter Display 3 16 Third Parameter Display 3 21 Programmable Keys Display 3 24 Character Replacement 3 25 Summary 3 26 4 Running a Session 4 1 Introduction 4 3 Connection 4 3 Communicating 4 9 Terminating 4 25 Automatic Control 4 26 Remote Com...

Page 6: ...ssemble 5 4 Set Up 5 5 Establish Connection 5 7 Send Receive Files 5 8 Terminate Communications 5 11 Appendixes A TTY In Depth B Error Codes C Parameter Guide D Using an Internal Modem E Key Mnemonics F Modems G International to National Character Cross Reference vi Glossary Index ...

Page 7: ...1 Introduction What is Communications 1 3 How Data Communications Works 1 4 How TTY Communications Works 1 4 What TTY Does 1 5 Necessary Equipment 1 5 International Environment 1 8 1 1 1 2 ...

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Page 9: ... enter store process and dis play data without using another computer However you may want to connect your Texas Instruments Professional Com puter shown in the following figure to another computer to send or receive data This transfer of information between com puters is called data communications 2223127 2 1 3 ...

Page 10: ...ls deal with these issues How TTY Communications Works 1 4 TTY Teletypewriter is one of many different protocols Protocols are generally divided into two types syn chronous and asynchronous In synchronous protocols data is sent in large blocks You can place the data in queues so that the communi cations line will not be idle very long Because data can be sent in large blocks and in rapid successio...

Page 11: ...vides automatic telephone calling or answering if you have a Texas Instruments internal modem Features programmable keys which save time by reducing lengthy character sequences to short key strokes NECESSARY EQUIPMENT To communicate using TTY you need the following equipment Chapter 2 describes each piece of equipment and shows you how to find out if each piece is installed Texas Instruments Profe...

Page 12: ...ry RAM board 64K bytes Synchronous asynchronous communications board sync async comm board or Texas Instruments internal modem Communication link which consists of the following Communication lines Modems optional Telephones optional Communication cables 1 6 ...

Page 13: ...The following figure shows a typical arrangement of this com munications equipment D co Df IIIIIIIIIIIIIIIIIIII mB D co Dl IIIIIIIIIIIIIIIIIIII mB 2223127 1 1 7 ...

Page 14: ...In European countries Comite Consultatif International de Telegraphique et Telephonique CCITI compatible modems must be used For example CCITT V 21 300 bps full duplex CCITT V 22 1200 bps full duplex Texas Instruments internal modems may not be approved by the Telecommunications Regulatory Agency of your particular country Appendix D contains more details on internal modems and their restrictions ...

Page 15: ...roduction 2 3 Assembling the Equipment 2 4 Determining the Configuration 2 4 Attaching the Cables 2 9 Direct Connect Link 2 10 Dedicated Link 2 11 Switched Link 2 12 Loading the Software 2 13 Preparing Files 2 14 2 1 2 2 ...

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Page 17: ...what type of communication link you have Are all the communications cables attached If not start at the section entitled Attaching the Cables in this chapter 4 Have you turned on the system loaded MS DOS and loaded the communications diskette If you haven t done all of these start at the section entitled Loading the Software in this chapter 5 Do you know the names of the files you want to send or ...

Page 18: ...ut how to set up your computer 2223116 13 DETERMINING THE CONFIGURATION Determining the system configuration involves finding out what options are installed in your computer You need the fol lowing information about your computer before you can begin communicating with another computer Is a sync async comm board installed in the system unit Is a Texas Instruments internal modem installed in the sy...

Page 19: ...drive A the drive on the left Close the diskette drive door 2 Place the system unit ON OFF switch in the ON position Wait 10 to 35 seconds until the main diagnostics menu appears on the display as shown below Texas Instruments Professional Computer DIAGNOSTICS Version 1 45 C Copyright Texas Instruments Inc 1983 Overall Unit Test Yes No Memory Test Yes No CRT Test Yes No CRT Graphics Test Yes No Pa...

Page 20: ... value you want and then press the RETURN key When you have selected the Display System Configuration Test press the ENTER key on the numeric keypad NOTE Throughout this manual the word press means to momentarily push down a key and then release it Press and hold means to push down a key and hold it down while performing some other stated ac tion similar to typing an uppercase character using the ...

Page 21: ...ppears on the display as Serial Communication Port A port num ber in this display a 1 also appears An internal modem board appears on the display as Modem Port followed by a port number Write down this number It should be either a 1 2 or 3 If it s a 4 the configuration of the board must be changed Instructions for changing the configuration of this option are given in Chapter 2 of the Synchronous ...

Page 22: ...sing an Internal Modem E 2 Ell El0 E9 E8 E7 P60 2223127 4 5 Check the line on the System Configuration display that shows RAM installed to see how much RAM memory you have You need at least 128K bytes of RAM to com municate If fewer than 128K bytes are indicated you need to install an expansion RAM board 2 8 An expansion RAM board shown in the following figure adds more internal memory to your com...

Page 23: ...the diagnostic program Press the ESC key one or more times until the prompt A appears 7 Remove the diskette from diskette drive A Make sure the red in use light isn t on when you do this ATTACHING THE CABLES In this section you attach all the cables necessary to connect your Texas Instruments Professional Computer to the commu nications link A communications link consists of all the com munication...

Page 24: ...e you connect any of the cables make sure your system unit is not plugged into an ac receptacle Direct Connect Link 2 10 A direct connect line provides a direct communication link between two computers located a short distance apart usually less than 15 m 50 ft If you have a direct connect link attach the cable shown TI Part No 2233020 0001 from the 25 pin connector on your sync async comm board t...

Page 25: ...em translates digi tal signals from a computer into analog signals that can be sent over the telephone line A modem also trans lates analog signals received over the telephone line into digital signals your computer can understand The full duplex modems you can use are listed in Appendix F Modems You can t use half duplex modems If you use a dedicated link attach the cable shown TI Part No 2233021...

Page 26: ...with which computer you are connected If you use a switched link with an external modem at tach the cable shown TI Part No 2233021 0001 from the 25 pin connector on the sync async comm board to your modem as shown in the following illustration Re fer to your particular modem instruction manual to find out how the attachments to the modem should be made TI PART NO 2532883 0002 2223122 3 You may hav...

Page 27: ... to do the following copy MS DOS and TTY together onto a single separate diskette and store the master TTY and MS DOS diskettes in a safe place Putting MS DOS and TTY onto the same diskette allows you to boot up the computer and start a TTY session without changing diskettes MASTE MS DOS MASTERJ TIY I ASTE MS DOS M ERJ MS DOSJ I TIY j 1 I MS DOSJ I TIY J USE 2 13 ...

Page 28: ... letter before the greater than sign in the command prompt designates the default drive For example if your prompt is A diskette drive A is the default drive PREPARING FILES You now need to prepare the files you want to send to the other computer In addition to following the rules on filenames given in Chapter 3 of the Texas Instruments Professional Com puter Operating Instructions avoid giving yo...

Page 29: ... 3 15 Phone Number 3 15 Second Parameter Display 3 16 Answerback Message 3 16 Call Answer ABM 3 17 Call Origination ABM 3 17 Secured ABM 3 17 Transmit New Line 3 17 Receive New Line 3 17 Remote Device Control 3 18 Remote Commands 3 18 Keyboard 3 19 Printing of Completions 3 19 Normal Disconnect Batch File 3 19 Abnormal Disconnect Batch File 3 20 Third Parameter Display 3 21 Busy Handling 3 21 Busy...

Page 30: ...DLE EOT Disconnect 3 23 EOT Disconnect 3 23 Display of Transmitted Data 3 23 Display of Received Data 3 23 Programmable Keys Display 3 24 Character Replacement 3 25 Summary 3 26 3 2 ...

Page 31: ...mputer After you have initialized MS DOS and a prompt is displayed for example A type the command COMTTY to start the TTY program After you type COMTTY the main TTY menu appears on the display as shown in the following figure Texas Instruments Professional Computer TTY Communications Version 1 20 C 1983 84 Texas Instruments F1 HELP F2 SETUP F3 START F12 EXIT 3 3 ...

Page 32: ...ollowing Use the HELP key to get more information about your choices SET UP a file of parameters A parameter is a variable that is given a constant value for a ses sion and controls some aspect of the session START the TTY session with a previously created parameter file or with the default parameters Default values are the built in parameter values your computer assumes you want if you don t spec...

Page 33: ...p function first Basic Setup Function The parameters determine the manner in which the TTY session is run After you set the values for the parameters save them in a parameter file You can then use the parameter file for subsequent sessions To set up the parameters for the session press the SET UP key F2 The following display appears Texas Instruments Professional Computer Setup of TTY Communicatio...

Page 34: ...800 9600 AUTO 1 2 ODD EVEN MARK SPACE ON OFF National International NONE Check Parity Character Set Country code Dialing Mode Dialing Procedure Phone Number USA NOR DNK SWE FIN CHE ESP Pulse Tone Manual Automatic F1 HELP F2 NEXT MENU F11 SAVE F12 CANCEL This is the start of parameter setup You have several options at this point Get help information about the parameters on the display by pressing t...

Page 35: ...y F2 Beginning with the section in this chapter entitled Second Parameter Display we describe the parameters shown when you do this Save the currently selected set of parameters by pressing the SAVE key Fll You can do this now or after you have modified the parameters When you press the SAVE key the following display appears Texas I nstruments Professiona l Computer Setup Of TTY Communications Sav...

Page 36: ...he following B DAILY PRM After you save these parameters you won t need to use the Setup function again unless you want to change the parameters you have selected The next time you want to conduct a TTY session with the parameters in DAILY PRM type COMTTY followed by the name of the parameter file COMTTY DAILY PRM If you need several different sets of parameters use the Setup function to create se...

Page 37: ...ursor until it covers the value you want and press the RETURN key In a type in field you type the value yourself because the parameter has too many possible parameter values to list After you have typed the parameter value you want press the RETURN key To include a control character in a type in field that al lows control characters you must type the control char acter mnemonic enclosed in angle b...

Page 38: ...ntrol I Device Control 2 Device Control 3 Device Control 4 Negative Acknowledge Synchronize End of Transmission Block Cancel End of medium Substitute Escape File Separator Group Separator Record Separator Unit Separator Space Delete NOTE SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI DLE DCI DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US SP DEL Quotation marks can be used in a field but y...

Page 39: ...ur computer doesn t under stand your computer displays an error code Appendix B lists all the error codes and their explanations You can use the INS key and DEL key in type in fields You can also use the clear field sequence To clear a field press and hold the SHIFT key and then press the DEL key Now that you know how to enter information into fields you can change the parameter values to suit you...

Page 40: ...If each board is connected to a differ ent computer you need to be able to select the right board For this reason each board has a different port number A port in a computer is a device through which information comes in or goes out The port num ber is 1 2 or 3 depending on a jumper setting on your communication board For most sync async comm boards the switch is set to 1 The section in Chapter 2 ...

Page 41: ...after each character to indicate where the character ends The stop bit parameter deter mines the number of stop bits you send after each char acter The number of stop bits sent must match the number sent by the remote computer Parity and Check Parity The parity parameters parity and check parity affect the error detecting process of your computer which is called parity checking The check parity pa...

Page 42: ... character set Appendix G contains the International to National Character Cross Reference NATIONAL which causes the national character set to be selected INTERNATIONAL which causes the ISO interna tional character set to be selected Here the cur rency sign is a NATIONAL is the default value Country Code 3 14 When a country code is selected the national character set for that country is selected T...

Page 43: ...er that you specified in the parameters If you didn t specify a phone number the modem goes into automatic answer mode Phone Number If you specify the phone number parameter the inter nal modem dials the number for you If you don t have an internal modem you should not specify a tele phone number The telephone number can be any sequence of numbers up to 30 digits The sequence can include and as se...

Page 44: ...eyboard CR IF ____________ ON OFF ON ON OFF OFF Printing of Completions ON OFF Normal Disconnect Batch File Abnormal Disconnect Batch Fi le F1 HElP F2 NEXT MENU F3 PREVIOUS MENU F11 SAVE F12 CANCEl Answerback Message 3 16 The answerback message ABM is a message that your computer can send when it answers or originates a call The ABM is sent whenever your computer receives an ENQ character The ABM ...

Page 45: ...ne parameter determines what char acters are sent from your computer when you press the RETURN key the end of a record Usually the se quence is a carriage return followed by a line feed but you can set it to be any sequence up to 10 characters long See Appendix E Key Mnemonics for a list of mnemonics you use to represent control characters Receive New Line The receive new line parameter is the opp...

Page 46: ... when it is sending a file it stops sending and waits until it re ceives a DCl from the remote computer before resum ing the send operation Unless you are sending or receiving data that includes device control characters you should set remote device control to On It helps prevent loss of data when used in conjunction with DCl DC3 busies especially at high speeds Refer to Appendix A for more inform...

Page 47: ...ent completion mes sages An event completion is the completion of a func tion such as the sending or receiving of a file If you set this parameter to On and you have a printer the printer prints a verification of the completion immedi ately after it occurs Normal Disconnect Batch File A normal disconnect batch file contains MS DOS commands that your computer executes when a normal disconnect occur...

Page 48: ...XEC BAT file are included in the disconnect batch files There fore when the disconnect normal abnormal condition occurs the AUTOEXEC BAT file if it exists will be replaced by the dis connect batch file specified above The conditions that can cause an abnormal disconnect are the following Error limit too many parity framing errors Inactivity time out there has been too much in activity on the line ...

Page 49: ...ted Data ON OFF Display of Received Data ON OFF F1 HELP F2 NEXT MENU F3 PREVIOUS MENU F11 SAVE F12 CANCEL Busy Handling The busy handling parameter determines how your computer and any device to which it is connected indi cates that it is busy and temporarily cannot receive data The choices of parameter values are reverse chan nel SCA SCF DCI DC3 or none Reverse channel busy handling is reserved f...

Page 50: ...rets SCF being turned on as a signal the remote computer is busy Inactivity Time out The inactivity time out parameter determines the maxi mum amount of time the line can be inactive before your computer disconnects the line If you set this parameter to 0 your computer doesn t break the connection regardless of how long the period of in activity Error Limit 3 22 The error limit parameter sets the ...

Page 51: ...nnects when it receives a DLE EOT sequence This is a normal disconnect EOT Disconnect If you set the EOT disconnect parameter to On your computer disconnects when it receives an EOT This is a normal disconnect Display of Transmitted Data When the display of transmitted data parameter is set to On your computer displays all the information that you transmit This parameter is also known as local ech...

Page 52: ...ust be enclosed in angle brackets like this CR Mnemonics are included in the 32 character count Thus CR uses four characters If you want to include an angle bracket in a field you must enclose it in angle brackets For example if you want your key to be AB your field must be AB Quotation marks can be used in the key defini tions but you must use two quotation marks in a row to get one to appear Tex...

Page 53: ...e character to be replaced under the column labeled Character Mnemonics for characters such as CR for carriage return must be included in angle brackets Refer to Appendix E Key Mnemonics for a list of mnemonics for characters Type the replacement charac ter directly across from the character to be replaced in the col umn labeled Replace with If you want to delete the character type two angle brack...

Page 54: ... table lists all the parameters their range of values and their default values in the same sequence as they appear on the displays Note that NONE means the default value is None and none means there is no default value 3 26 ...

Page 55: ...ransmit New Line o 10 character string CR LF Receive New Line o 2 character string CR LF Remote Device Control ON OFF ON Remote Commands ON OFF ON Keyboard ON OFF ON Printing of ON OFF OFF Completions Normal Disconnect See text none Batch File Abnormal Disconnect See text none Batch File Busy Handling DC1 DC3 Reverse None Channel None Busy Sense 0 1 0 Inactivity Time out o 999 0 Error Limit o 999 ...

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Page 57: ...tion Process 4 8 Communicating 4 9 Data Transfer Display 4 9 Help 4 11 Send 4 13 Receive 4 16 Status 4 19 Statistics 4 20 Files 4 21 What the Files Function Does 4 21 How to Use the Files Function 4 22 Pause and Continue Functions 4 24 Terminating 4 25 Automatic Control 4 26 Remote Commands 4 27 Command Format 4 28 Table of Remote Commands 4 29 Summary 4 31 4 1 4 2 ...

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Page 59: ...with the other com puter During communication you send or receive data During termination you end the TTY session CONNECTION COMMUNICATION TERMINATION CONNECTION After you have specified the TTY session parameters you can start the TTY session with the Start function When you press the START key F3 the following display appears It prompts you for the parameter filename 4 3 ...

Page 60: ...ts the session How ever you should not do either one until you have read the fol lowing sections on originating and answering a call If you plan to call the remote computer read the section entitled Origi nating a Call If you plan to answer a call from the remote computer read the section entitled Answering a Call Originating a Call 4 4 This section lists the various procedures for calling a remot...

Page 61: ...ow the procedure below to establish connec tion with the other computer 1 Make sure the other computer is con nected turned on and ready to com municate 2 Press the START key F3 3 Type the parameter filename you want to use and press the RETURN key For ex ample type the following SAMPLE and press the RETURN key If the file is on a diskette in a nondefault drive you need to specify the drive it s i...

Page 62: ...g SAMPLE and press the RETURN key If the file is on a diskette in a nondefault drive you need to specify the drive it s in For exam ple if the parameter file SAMPLE is on drive B and the default drive is drive A type the following B SAMPLE and press the RETURN key 3 Pick up the telephone receiver 4 Pull up the exclusion key if one exists on the telephone The exclusion key is one of the small pilla...

Page 63: ... the call perform the following procedure 1 Press the START key F3 2 Type the parameter filename you want to use and press the RETURN key For example type the following SAMPLE and press the RETURN key If the file is on a diskette in a nondefault drive you need to specify the drive it s in For example if the parameter file SAMPLE is on drive B and the default drive is drive A type the following B S...

Page 64: ...r connecting or dialing Texas Instruments Professional Computer TTY Session Status CONNECTING DIALING IDLE SENDING RECEIVING DISCONNECTED F12 CANCEL When the computers connect you are ready to transfer data If the computers don t connect the status display shows the reason for the failure of the call for example busy or no answer If you have problems connecting refer to the section in Appendix B e...

Page 65: ...the function keys You can use the following functions during the communi cating phase Help Send Receive Status Statistics Files Disconnect Data Transfer Display The data transfer display shown in the following fig ure shows data as it is sent or received Transmitted data is interspersed with the received data on the dis play when you are sending and receiving at the same time To keep the data from...

Page 66: ... when you access them Dec Control Character Start of Heading Start of Text End of Text End of Transmission Enquiry Positive Acknowledge Bell Backspace Horizontal Tab 10 Line Feed 11 Vertical Tab 12 Form Feed 13 Carriage Return 14 Shift Out 15 Shift In 16 Data Link Escape 17 Device Control 1 18 Device Control 2 19 Device Control 3 20 Device Control 4 21 Negative Acknowledge 22 Synchronize Mnemonics...

Page 67: ...numeric key pad in the chart to get the character Pressing the HELP key Fl displays a file of informa tion about the functions and parameters you use during a TTY session The Help function has been designed so that you get the information you want when you want it If you are looking at the setup parameters for exam ple the display explains what those parameters mean If you are looking at the main ...

Page 68: ...essionaL Computer This Setup menu has parameters for TTY communications that depend on the characteristics of your computer and the remote computer DefauLt vaLues have been chosen for typicaL TTY operations PARAMETERS Port SeLect the number of the port you use for TTY communications If you do not know wh ich ports are instaLLed dispLay the system configuration using the diagnostics diskette Speed ...

Page 69: ...s the SEND key F2 The following dis play appears Texas Inst r uments Professional Computer SEND Operation F1 HELP F2 START F3 STOP F12 CANCEL From this display you can do the following Get Help on the Send function Start sending the contents of a file Stop abort sending the contents of a file Cancel the Send function 4 13 ...

Page 70: ...h SEND Operation TEXT UNFORMATTED 0__ bytes F1 HELP F2 START F3 STOP F12 CANCEL The filename can be any file in your computer If the file is not in a default drive you must include the drive designator in the filename for example B ORDERS TXT The file format must be text or unformatted Select text format for any MS DOS file that delimits its record by a CR LF which is usually a file con taining te...

Page 71: ...returns to the data transfer display If the dis play of transmitted data parameter is On the contents of the file are displayed as they are sent While the file transfer is in progress you can t use any keys on the keyboard except the function keys After you have finished sending all the data in the file the send process automatically stops If you stop a send operation in the middle of a transmissi...

Page 72: ...he data on the data transfer display as it comes in but you won t have a permanent record of the data To get the receive menu shown below press the RE CEIVE key F3 Texas Instruments ProfessionaL Computer RECEIVE Operation Fi Lename Save Mode Record Length F1 HELP REPLACE APPEND TEXT UNFORMATTED F12 CANCEL Pressing the START RECEIVE key F2 displays the parameter menu shown below Enter the name of t...

Page 73: ...e file The file type parameter determines whether the file you put the data in is a text file or an unformatted file Text format should be selected for any MS DOS file that delimits each record by a CR LF which is usually a file containing text Unformatted format should be selected for files containing a stream of unformatted data Sometimes a remote computer attempts to send special characters to ...

Page 74: ...o On the remote computer can sense when you are getting information too fast and can halt temporarily Start the receive operation shortly before you plan to receive the data After you press the START RE CEIVE key F2 your computer returns to the data transfer display When all the data has been received go back to the receive menu and Pressing the STOP RECEIVE key updates the receive file that is it...

Page 75: ...ter if the printing of completions parameter is on The completion status is also placed on the completion list on the status display This infor mation continues to be displayed and updated until the session is terminated When you press the CANCEL key F12 the computer returns to the data transfer dis play For a list of the possible completion messages re fer to Appendix B Error Codes Texas Instrume...

Page 76: ... handle them This sometimes happens at high speeds when the remote device control parameter is turned off or the busy handling parameter is set to none A receiver overrun indicates that data has been lost The row above the function menu line gives the names of several modem signals For example CTS is an acro nym for the Clear To Send signal The display shows the acronym in reverse video high inten...

Page 77: ...rm one of the functions For example if you wanted to look at a file you would have to end the TTY session use the MS DOS com mand TYPE to show the file reenter the TTY session and then send the file What the Files Function Does With the Files function you can perform the six file operations in the following list You can t perform any of the files functions while you are receiving remote commands t...

Page 78: ... Directory functions work the same way the MS DOS commands TYPE and DIR work With the Show and Directory func tions you can use an asterisk to look at a family of files You can also use the Directory function to show the contents of a diskette by typing the drive designator A B C D or E instead of the filename You should use the Show and Directory functions only when you are not sending or receivi...

Page 79: ... DELETE F4 RENAME F5 SHOW F6 DIR F7 PRINT F12 CANCEL Choose the operation you want to execute and press the appropriate key The display then re quests the filename s or drive identifier you want For example the Create File Operations display appears in the following figure 4 23 ...

Page 80: ...en you press the RETURN key the operation in this example create executes and you return to the files display Pause and Continue Functions If the computer displays the data too fast use the PAUSE key F2 to freeze the display tem porarily When you want to continue press the CONTINUE key F3 F2 PAUSE F3 CONTINUE F12 CANCEL ...

Page 81: ...sconnect yes no A normal disconnect occurs when the remote computer sends a normal disconnect sequence to your computer An abnormal disconnect occurs when the error limit is exceeded or some other major problem is encountered After either of these two disconnects occur the appropriate batch file is executed if you have specified a normal or abnormal disconnect batch file If you have an AUTOEXEC BA...

Page 82: ...MS DOS TTY diskette Put the following command into the file COMTTY filename where filename is the name of the parameter file that con tains the parameters for the session For example if you regularly send files to your company head quarters you can automatically prepare for execution on power up with the following procedure 1 Create a parameter file which we ll call HDQ PRM 2 Put the command COMTT...

Page 83: ... remote computer to one of your files Change the current values of some session parameters Create a file on your computer Delete a file on your computer Rename a file on your computer With these commands someone at a remote location can con duct an entire TTY session with your Texas Instruments Professional Computer without your help However these com mands cannot be executed when you are performi...

Page 84: ...parameter value parameter value RNL where ESC represents the escape character and where RNL is the defined receive new line sequence A typical remote command is ESC ODELETE FILE A ORDERS RETURN In cases where parameters in addition to the filename are required for example Send and Receive com mands the additional parameters must follow the file name de limited by a comma or space and must be of th...

Page 85: ...f the command in case the re mote computer requests it To request the status the remote computer sends the ESCI sequence Appendix B lists the possible statuses in the section entitled Command Error Codes and describes how to correct errors Typical messages appear below 00 TNL Normal completion 10 TNL Invalid command Table of Remote Commands The following table lists the commands you can use in rem...

Page 86: ...ename FORmat TEXt TEXt UNFormatted LENgth 0 32767 none RECEIVE OPEration START none STOP FILe filename none SAVe Mode REPlace REPlace APPend FORmat TEXt TEXt UNFormatted CREATE FILe non existing none filename RENAME OLD old none filename NEW new none filename DELETE FILe existing none filename 4 30 ...

Page 87: ...n many different ways The following figure summarizes the possibilities CONNECTION Auto dialing Manual dialing Auto answer COMMUNICATION Local Commands Send Receive Help Status Statistics Files Disconnect Remote Commands Send Receive Create 4 31 ...

Page 88: ... Rename Delete TERMINATION Manual disconnect Normal disconnect Abnormal disconnect 4 32 ...

Page 89: ...ect 5 3 Assemble 5 4 Communication Link 5 4 Determining Configuration 5 5 Set Up 5 5 Load the MS DOS TTY Diskette 5 5 Set Up the Parameters 5 6 Establish Connection 5 7 Switched Link 5 7 Nonswitched Link 5 8 Send Receive Files 5 8 Terminate Communications 5 11 5 1 5 2 ...

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Page 91: ...t all the system cables and cords unnecessary after the first time 2 Assemble the communications link unnecessary after the first time 3 Set up a parameter file optional 4 Establish connection 5 Send receive files 6 End the TTY session The rest of this chapter covers these steps in more detail CONNECT Because your computer probably already has all the hardware connected you need only make sure tha...

Page 92: ...om munication link The part numbers for the cables can be found in Chapter 2 of this manual Direct Connect Link Sync async comm board to the sync async comm board Dedicated Link Sync async board to modem Modem to wall telephone outlet Power cord for modem Switched Link Sync async board to modem Modem to wall telephone outlet Power cord for modem Telephone to modem If you have an internal modem see...

Page 93: ...a sync async comm board or an internal modem 4 Note the port number of the sync async comm board or internal modem 5 Remove the diagnostics diskette SETUP To set up a session do the following 1 Load the MS DOS TTY diskette 2 Set up a TTY session parameter file if you need one Load the MS DOS TTY Diskette Load your MS DOS TTY diskette into diskette drive A If you don t have an MS DOS TTY diskette r...

Page 94: ...ameter values to fit your needs and then press the NEXT SCREEN key F2 6 Continue to modify the parameters as needed 7 When you have modified all the parameters you want to press the SAVE key Fll 8 To save the parameters chosen type a filename on the save parameters line For this session type A SAMPLE and press the RETURN key The TTY session parameters you have chosen are stored in the file SAMPLE ...

Page 95: ...internal modem see Appendix D for the proper procedure 1 Press the START key F3 2 Type the parameter filename you want to use For example type A SAMPLE and press the RETURN key 3 Pick up the telephone receiver 4 Pull up the exclusion key 5 Dial the telephone number of the other computer 6 This step varies depending on whether a modem or a person answers the phone If you hear a mo dem answer tone w...

Page 96: ...lowing A SAMPLE Press the RETURN key You can start sending and receiving files SEND RECEIVE FILES With the data transfer display showing you can now transfer information Let s use the Send function first 1 Press the SEND key F2 2 Press the START key F2 The send parameter menu appears on the display The cursor is on the line labeled filename 3 Type A SAMPLE and press the RETURN key You are now in t...

Page 97: ...on next 1 Press the RECEIVE key F3 2 Press the START key F2 The receive parameter menu appears on the display The cursor is on the line labeled filename 3 Type A RECV and press the RETURN key You are now in the save mode field 4 Position the cursor over one of the parameter values Replace or Append and press the RETURN key You are now in the file format field 5 Position the cursor over one of the ...

Page 98: ... the Files function to create a file When you press the FILES key F6 the following display appears Texas Instruments Professional Computer Fi le Operations F1 HELP F2 CREATE F2 DELETE F4 RENAME F5 SHDW F6 DIR F7 PRINT F12 CANCEL 1 Check the bottom of the display to see which function key controls the Create function In this display the F2 key controls the Create function When you press the CREATE ...

Page 99: ... return to the data trans fer display TERMINATE COMMUNICATIONS Because we have done all we want in this TTY session we now end it Press the DISCONNECT key F12 You are asked if you want to disconnect To answer yes position the cursor over the word yes using the cursor control keys and press the RETURN key You return to the TTY main menu Press the EXIT key F12 and you return to MS DOS You have just ...

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Page 101: ...pendix shows you how TTY is implemented on the Texas Instruments Professional Computer To help you find informa tion Appendix A is outlined below COMMUNICATIONS THEORY Serial Data Transfer Signals Data Parity Framing Bits RS 232 C Interface Signals and Circuits Data Terminal Ready and Data Set Ready Request to Send and Clear to Send Data Carrier Detect SCA and SCF ATTENDED OPERATION Connection Sen...

Page 102: ...e communications board The TTY protocol is character oriented In other words data is sent a character at a time instead of in blocks of characters Asynchronous protocols do not require synchronized timing of the character The character can arrive at any time Instead codes are placed at the beginning and end of each data charac ter These codes tell the devices when a character begins and ends The a...

Page 103: ... in asynchronous mode transmits as a series of bits de termined by voltage levels in the signal The first bit is the start bit a low voltage signal This bit informs the remote device that a character is being transmitted Data Signal Eight data bits immediately follow the start bit These bits are represented by a sequence of high and low voltages This sequence rep resents the actual character code ...

Page 104: ...t significant bit in the eight bit data stream becomes the parity bit The parity bit is used for error checking If par ity checking is used characters are represented by seven bits For example the seven bit binary sequence 1010011 represents the character S The number of ones in a code sequence plays an important role in selecting the parity bit An even number of ones four appear in the code seque...

Page 105: ...uter defaults to no parity checking The parity checking parameter must be enabled if parity is to be checked If parity is checked the type of parity ODD or EVEN must be the same on each device You can see that if one device is sending even parity characters and the other is expecting odd par ity every character received is interpreted as an error Your Texas Instruments Professional Computer defaul...

Page 106: ...arrive from a remote device constitute the eight data bits If a data bit is for some reason considered a start bit the next eight bits are assembled as the data bits representing a character This results in a character made up of parts of two charac ters the end of one and the beginning of an other The ninth bit in this sequence is a data bit that is interpreted as the stop bit for the newly assem...

Page 107: ...hese pins 13 12 11 10 9 8 7 6 5 4 3 2 1 25 24 23 22 21 20 19 18 17 16 15 14 Pin No Circuit 1 AA 2 BA TD 3 BB RD 4 CA RTS 5 CB CTS 6 CC DSR 7 AB 8 CF DCD 11 SCA CR 12 SCF CI 15 DB 17 DD 20 CD DTR 22 CE RI 23 CR 24 DA Name Protective ground Transmitted data Received data Request to send Clear to send Data set ready Signal ground Data carrier detect Secondary request to sendl Speed select Secondary d...

Page 108: ...er activates Data Terminal Ready DTR upon the start of the session to indicate to the modem that the computer is ready to es tablish connection The modem sends back Data Set Ready DSR when it establishes connection with the modem of the remote computer Data set is another name for modem Your computer turns DTR off when it is fin ished communicating and wants the modem to disconnect the line When t...

Page 109: ...m being full and the busy handling parameter is set to SCA SCF This tells the remote computer that your com puter temporarily can t take any more data This signal returns to off when all the receive buffers are empty The Secondary Received Line Signal Detector SCF is activated by the other computer to in dicate that the remote computer is busy be cause its buffers are full and that your computer s...

Page 110: ...rol the send and receive op erations on your computer Connection A I0 When you begin the session by completing the Start function your computer tries to make connection with the remote computer During connection the status dis play shows how the connection process is progressing If you have an internal modem and have specified auto dialing and a phone number the display initially shows dialing If ...

Page 111: ...line sequence is sent This indicates to the remote computer that a record has ended The transmit new line sequence which is specified during parameter setup is an ASCII character string of 0 to 10 ASCII characters For most applications the trans mit new line sequence is a carriage return followed by a line feed CR LF Regardless of what you spec ify the transmit new line sequence to be however the ...

Page 112: ... you have specified unformatted data in the receive parame ters the receive new line sequence is discarded and not replaced with any characters Disconnection A 12 The three types of disconnects you can have in at tended mode are manual normal and abnormal Manual A manual disconnect occurs when you press the EXIT key F12 and answer yes to the dis connect question Your computer immediately stops sen...

Page 113: ...However you can cause a normal disconnect at the other com puter by sending an EOT or DLE EOT depend ing on how the remote computer is configured Abnormal An abnormal disconnect is caused if one of the following error conditions occurs Note that all of these conditions are variable by parameters except line disconnects Error limit is exceeded Inactivity time out expires Failsafe time out expires L...

Page 114: ...t sequence In other words the other computer may drop the DSR and not send either a EOT or a DLE EOT causing your computer to abnormally disconnect UNATTENDED OPERATION Unattended operation means a remote computer controls the sending and receiving of the data Connection A 14 For your Texas Instruments Professional Computer to be run by a remote computer your computer must be able to connect autom...

Page 115: ...he send and receive operations The DCI and DC3 characters allow a receiving computer to tem porarily halt and resume a session when it is receiving information too fast to store For DCI and DC3 to con trol the send process the remote device control parameter must be on and the busy handling parameter must be set to DCI DC3 The DC2 and DC4 characters allow a transmitting computer to control the rec...

Page 116: ...eives a DCI from the remote computer Note that this process works only when a DC3 is sent from a file not from the keyboard Also note that the DC3 charac ter is not actually sent The DC4 character is the record off character If your computer receives this character it continues to receive the data to the display but your computer immediately stops storing data in the receive file When the remote c...

Page 117: ...name of the appropriate normal or abnormal disconnect file is transferred to the AUTOEXEC BAT file 4 Your computer disconnects 5 Your computer reboots It looks in drive A for an MS DOS disk If your computer doesn t find this diskette it looks in drive B and then drive C and so on until it finds an MS DOS disk 6 If an AUTOEXEC BAT file exists on the MS DOS disk it is executed Because of this proced...

Page 118: ...received data Disables display of received data Enables display of transmitted data Disables display of transmitted data Enables keyboard Disables keyboard Allows a single ESC to be treated as data Remote Command Status When a remote computer sends an ESC 1 your com puter responds by sending the status of the last remote command that it executed The status of the command is displayed as a two digi...

Page 119: ...s an ESC 4 sequence all information the remote computer sends is shown on the display Display of Transmitted Data When a remote computer sends an ESC 7 sequence none of the information you send whether it is sent by you or by remote command shows on your display The only exception to this is the transmit new line se quence which is always displayed in the data transfer display When a remote comput...

Page 120: ... ESC as Data A 20 When an ESC is to be interpreted as data the remote computer inserts two ESCs into the data being sent If a number follows a double ESC the sequence will not be interpreted as an escape sequence ...

Page 121: ... answered Check the phone number to see if it is correct Try again later Dialing connection failure inoperative phone number An inoperative phone number error has many possible causes including any of the following The telephone cord is not hooked to the modem The manual originate mode was selected but no call was placed within 20 seconds The command was not accepted by the modem for exam ple tryi...

Page 122: ...ing connection failure no modem answer tone The call was answered but the remote modem has not supplied an answer tone Either the modem is defective or you have reached a wrong number Check the number and try again Dialing connection fai lure modem not installed Your modem either isn t connected correctly or it doesn t exist If a modem is there check the connections Dialing connection fai lure ino...

Page 123: ... Too many parity and framing errors occurred on the line There are several possible causes You may have specified the wrong number of stop bits in which case you need to reset the num ber of stop bits The line may have a lot of interference on it in which case you should try again with a different connection You may have set the speed parameter wrong in which case you need to match your modem spee...

Page 124: ...ror A file by the specified name could not be found Invalid Parameter fi le An MS DOS device name PRN CON NUL AUX or LST has been specified as a filename extension or the specified file doesn t contain valid parameters Operation not allowed wh i le f i les are in use Create Delete or Rename operation attempted while files are III use No communications board A communications board could not be foun...

Page 125: ...ectory name Cannot c lose current fi le Either the diskette is bad or the diskette does not have enough room for the file Cannot create receive fi le The diskette is write protected or the diskette does not have enough room for the file No receive fi le defined You pressed the STOP RECEIVE key and the computer wasn t receiving No send fi le defined You pressed the STOP SEND key and the computer wa...

Page 126: ...lphabetic character in field Must be A Z or a z Character in field is not a number Must be 0 9 Number is less than mi ni mum requi red Number is greater than maximum a ll owed Character in field is not valid Must be 0 9 or Character in field is not valid for filename Character in field is control character or not ASCII Both parts of character pairs not mapped Function string not valid B 6 ...

Page 127: ...er can return are the following Note that only asterisks and numbers are sent not the explanation 00 Successful Completion 17 Operation not allowed while files are in use 18 File not found or device error 19 Invalid filename 32 Create file failed 33 Delete file failed 34 Rename file failed 36 Bad parameter in command 37 Bad verb in command 38 File already exists 95 Cannot close current file B 7 ...

Page 128: ... 96 Cannot create receive file 97 No receive file defined 98 No send file defined 99 Receive file same as send file B 8 ...

Page 129: ...lectrical Industry Association EIA RS 232 C standard interface These codes and signals are controlled by software parameters as well as by hardware in the sync async communications board When com municating with an external device these parameters may be changed by the user so that the commands and codes used by your computer are compatible with those of the external device The parameters used in ...

Page 130: ...easier Parameter Values Default Purpose Comments C 2 The parameter designation is presented The possible values of the parameter are listed The assumed value of the parameter if there is no change The purpose of the parameter is described A brief explanation of the parameter is provided to help you in understanding how the parameter works ...

Page 131: ...If an abnor mal disconnect filename is specified the TTY program is terminated MS DOS is rebooted causing the MS DOS commands stored in the AUTOEXEC file to be exe cuted The AUTOEXEC file contains the file name When the filename is executed an MS DOS operating system diskette con taining the specified filename must be in stalled in the system default disk drive unit This option is used mainly for ...

Page 132: ...erback message The ABM message is transmitted when ever an enquire ENQ character is re ceived or when the answerback trigger option is activated automatically If the display of transmitted data local copy parameter is On and the secured ABM parameter is Off the ABM message is dis played as it is transmitted ...

Page 133: ...ed as the ready signal when the receive buffer is empty DC3 is transmitted as the busy signal when there is room for only 128 characters remaining in the receive buffer If the remote device control dynamic parameter is Off DCI DC3 busy handling does not take place When SCF SCA busy signal is selected the SCF input circuit is monitored for a busy signal with transmission of every character from the...

Page 134: ...A SCF busy handling is selected circuit SCF is monitored during transmission for a busy signal SCF OFF from the remote computer If busy sense is 0 and SCA SCF busy handling is selected your computer turns off circuit SCQ to indicate a busy condi tion to the remote computer If busy sense is 1 and SCA SCF busy han dling is selected your computer interprets SCF ON as a busy signal If busy sense is 1 ...

Page 135: ...a call is automatically answered If the call answerback ABM parameter is enabled when the computer automatically answers an incoming call the answerback message created using the ABM parameter is transmitted to the remote device The ring indicator RI signal is used as an indication that the call is being answered and did not originate locally C 7 ...

Page 136: ...answerback message ABM ON or OFF OFF Allows the transmission of the answerback memory ABM message when a call origi nates locally When the call originate ABM parameter is enabled the ABM message is automati cally transmitted when the computer origi nates a call ...

Page 137: ...pecifies whether to check received charac ters for parity Parity is checked if check parity is On and the parity parameter is set to ODD or EVEN If a parity error is detected the character is recorded in the files as the graphics character with the decimal value 240 C 9 ...

Page 138: ... NATIONAL the national version of the ISO character set is used If the reply is INTERNATIONAL the inter national reference version of the ISIO character set is used The currency sign used in the ISO interna tional reference character set is This character set is identical to the USA ASCII set and the two options are the same in the USA and Canada ...

Page 139: ...Parameter Value Default Purpose Country Code USA NOR DNK SWE FIN CRE ESP USA Allows you to select your national version of the ISO character set C l1 ...

Page 140: ...er disconnect ON or OFF OFF Enables the data link escape end of trans mission disconnection sequence When the DLE EOT character disconnect parameter is enabled the computer dis connects the communications line when the DLE EOT character combination is received This results in a normal dis connection ...

Page 141: ...Parameter Value Default Purpose Dialing mode TONE or PULSE TONE Determines whether the modem uses tone or pulse dialing Some older phone systems may require pulse dialing C 13 ...

Page 142: ...rameter Value Default Purpose C 14 Dialing procedure Manual or Automatic Automatic Determines whether the modem call or an swer procedure is automatic See the Inter nal Modem appendix for more information ...

Page 143: ...ault Purpose Comments Display of received data ON or OFF ON Specifies whether or not received charac ters are displayed When the display of received data is en abled all characters are displayed as they are received C 15 ...

Page 144: ...ted data ON or OFF OFF Specifies whether or not transmitted characters are displayed When the display of transmitted data parameter is enabled all characters are displayed as they are transmitted Control functions are not performed when transmitted data is displayed ...

Page 145: ...onnect ON or OFF OFF Enables a disconnect when the end of transmission EOT character is received When the EOT disconnect parameter is enabled the computer disconnects the communications line when the EOT charac ter is received This results in a normal disconnection C 17 ...

Page 146: ...number of parity errors framing errors and receiver overruns al lowed before an abnormal disconnection occurs A value of 0 the default value means that a disconnect does not occur regardless of the number of errors If the number of errors threshold an abnormal results equals the disconnection ...

Page 147: ...rious error conditions All time outs associated with this feature are enabled The failsafe time outs include the clear to send CTS and the data carrier detect DCD time outs If either of these signals remains Off for a predefined period of time during the session a failsafe disconnection occurs If the failsafe disconnect parameter is Off no time out occurs and there is not a fail safe disconnection...

Page 148: ...e out o 999 seconds o Enables or disables the time out discon nect due to inactivity The inactivity time out parameter specifies the number of seconds of inactivity al lowed to elapse before an abnormal line disconnection occurs A value of 0 disables the timeout ...

Page 149: ...ws the operator access to control operations by using the function keys special keys or specific key sequences If the keyboard parameter is Off the keyboard is disengaged and data cannot be transmitted by typing on the keyboard Function key operations are also sus pended This allows unattended operation where the display and send receive devices are controlled using the device control characters f...

Page 150: ...g the character over the communication line Assigning the mapping parameters re quires the use of the mapping menu Char acters to be changed are entered into the fields designated Characters In some cases mnemonic codes for characters such as CR for the carriage return character must be entered This requires that the mnemonic code be enclosed in angle brack ets CR The corresponding Map to field is...

Page 151: ...normal disconnect occurs the TTY program is terminated MS DOS is rebooted causing the MS DOS commands stored in the AUTOEXEC file to be executed The AUTOEXEC file contains the con tents of filename When filename is exe cuted an MS DOS operating system diskette containing the specified filename must be installed in the system default disk drive unit This option is used mainly for unattended operati...

Page 152: ...y check is ON the parity is checked when parity is set to ODD or EVEN The use of MARK SPACE or NONE disables parity check ing If NONE is selected eight bit data is transmitted and received and the parity bit is ignored Parity is used to ensure that the message sent is the same as the one received The transmitting computer sets the parity bit in the binary code as specified by the value of parity I...

Page 153: ... Stores the telephone number of the remote station to be contacted The plus tells the computer to pause and wait for a dial tone before continuing to dial the number This is used when a number must be dialed to get an outside line The hyphen is used only for visual separation of the numerals in the number and is ignored by the computer C 25 ...

Page 154: ...unicate The port number is determined by the position of a jumper on the synchronous asynchronous communications board It is not related to the slot occupied by the board Refer to the Synchronous Asynchronous Communication Board option manual for details concerning the positions of the jumpers to set the port number ...

Page 155: ...ON or OFF OFF Enables a log of the completed events to be printed on a line printer When enabled the status display comple tion messages are sent to the line printer Printing of completions occurs even if the status is not displayed at the time the event occurs C 27 ...

Page 156: ...ed to each of the 12 function keys using the programma ble key menu These strings can be up to 32 Characters long When the specified SHIFT FUNCTION key is pressed the corresponding character string is returned and transmitted just as though the string had been typed from the keyboard If a value is not entered for a particular function key that key is undefined and pressing the key will not have an...

Page 157: ... The receive new line parameter allows special character sequences to be used to inform the computer that a new line is being transmitted When the receive new line character sequence is encountered in the communications data stream an end of record mark is inserted in the receiving file and a carriage return line feed sequence is printed on the display C 29 ...

Page 158: ... be received When this parameter is On the remote device is allowed to send commands or any of the controlling ESC key sequences to the Texas Instruments Professional Com puter This allows the remote device to control the activity of the computer When Off the remote device cannot control the operation of the computer ...

Page 159: ...s line When a DC3 signal is received from the remote de vice any ongoing transmission will stop within five characters The operations of the receive file may be controlled by DC2 and DC4 received from the communications line When a busy indication DC3 is sent to the remote device data transmission should cease within 128 characters to pre vent data loss Your computer waits for a ready indication D...

Page 160: ...Parameter Value Default Purpose C 32 Secured ABM ON OFF OFF Determines whether or not the transmitted ABM is displayed on the data transfer display ...

Page 161: ...ssfuL AUTO is one of the choices for the speed parameter It provides full duplex opera tion with a Bell 212A compatible data set designed to accept dual baud rates When a call originates locally the data signal rate selector CH is held ON to enable high speed transmission and reception When a call is answered the modem indicates the speed selection using the CI signal When the AUTO speed option is...

Page 162: ...fault Purpose Comments C 34 Stop bits lor 2 1 Specifies the number of stop bits used to inform the computer when a character s bit pattern is complete If speed is set to llO bps the number of stop bits must be set to two ...

Page 163: ...e is encountered in the send file the specified transmitting new line character sequence is added to the transmitted data after the record is sent If the local copy parameter is enabled a carriage return line feed sequence is in cluded in the local copy data when a transmit new data character sequence is encountered in the data stream This feature creates the appropriate end of record code for the...

Page 164: ......

Page 165: ...are package Introduction and Overview The internal modem gives you a reliable means of com munication between your Texas Instruments Profes sional Computer and the outside world The internal modem greatly simplifies your TTY operations Other benefits of installing a modem include Enabling automatic dialing auto dial controlled by the TTY communications applications program Providing automatic answ...

Page 166: ...nary synchronous and asyn chronous full duplex communications The baud rates of the modem are 300 and 1200 The other modem is a Bell 103J compatible modem providing serial binary asynchronous full duplex communications Its baud rate is 300 bps The technical term for the modulation technique employed is dibit phase shift keying DPSK In this type of keying the phase of the modulated car rier is chan...

Page 167: ...th the internal modem option kit and follow these steps Connect one end of the telephone cordset to the modem board The option plate of the modem board is visible from the back of the system unit As the following illustration shows there are two modular telephone type jacks or sockets on the option plate Both are wired in parallel so it doesn t matter which one you use 2223256 5 D 3 ...

Page 168: ...lephone wall jack If you want to you may connect a standard telephone set to the remaining jack on the option plate on the back of the system unit The follow ing illustration shows the locations of the jacks and proper connections 2223256 12 ...

Page 169: ...rmine the following information from the Display System Configuration The presence or absence of an internal modem The port number for which the internal modem is programmed For instructions on changing the port number of your modem refer to Chapter 2 of your Internal Modems manual The presence of a sync async communications board option If this option board is also installed make certain that it ...

Page 170: ... 1 2 side s 40 tracks Diskette drive 2 2 side s 40 tracks 300 bps Modem port 2 System Configuration Code 0173400000 Press any key to return Instructions for Use D 6 This section presents the menus displayed when you use version 1 10 or a later version of the TTY Communications software package If you are not fa miliar with the setup and operating steps refer to Chapter 3 and 4 of this manual and C...

Page 171: ...mmunications Get Initial Parameters From _ ____ F1 HELP F12 CANCEL Setting Up Parameters with the Internal Modem Type the name of the file that you want to change and press the RETURN key If you do not have a parame ter file press the RETURN key and complete the stan dard setup procedure described in Chapter 3 The following display appears D 7 ...

Page 172: ...ing steps provide detailed instructions for setting up the internal modem parameters for the TTY Communications program 1 The setup display for the TTY includes fields for entering the dialing procedure automatic or man ual Automatic dialing enables storing of the desired destination telephone number with up to 32 digits as part of the setup parameters Auto matic calling and modem connection simpl...

Page 173: ... separa tors for the telephone number A tells the computer to wait for an additional dial tone before dialing the rest of the number Use this symbol if you are calling from a business telephone that requires you to dial a number to get an outside line The is a separator that you may use for your own convenience The computer ignores it For example if you wish to call from a business extension to a ...

Page 174: ...ey when you are in the last field of the display page The following display appears Texas Instruments Professional Computer Setup Of TTY Communicat i ons Save Paramete r s In ___________ F1 HE LP F12 CANCEL 5 Store the parameters you have selected by typing a filename Choosing a descriptive filename will make it easier for you and others to identify this file later For example a parameter file use...

Page 175: ...he parameter filename you wish to use If the file is not in the default drive specify the drive For example if drive A is the default drive and the parameter file is in drive B type the following B SAMPLE PRM Manual Dialing If you select manual dialing lift the exclusion key the grooved hang up button in the cradle of your data phone or key telephone set and dial the telephone number of the remote...

Page 176: ...mputer begins dialing as soon as you enter the parame ter filename from the start of TTY communica tions display Automatic Answering You can set up your computer to answer an ex pected call from a remote computer by following this procedure 1 Set up your file parameters in the normal manner Select Automatic dialing proce dure but do not enter a telephone number Simply press the RETURN key to leave...

Page 177: ...ral different problems including Use of the wrong telephone number Problems with the switched telephone link Problems with the remote modem connections or setup The remote computer or modem being OFF or hav ing a fault Inoperative phone number The call was not successfully completed Recheck the number and try again If this message repeats check the modem No diaL tone detected The connection was ne...

Page 178: ...nswered by another modem Recheck the number dialed and try again If the called number operates manually the originating computer should also Modem not installed Your computer does not have the internal modem option installed Manua l phone call not placed A phone call was not placed when manual mode was selected ...

Page 179: ... Shift In SI 16 Data Link Escape OLE 17 Device Control 1 OCI 18 Device Conlrol 2 OC2 19 Device Conlrol 3 OC3 20 Device Control 4 OC4 2 1 Negative Acknowledge NA K 22 SVnchrOnize SYN 23 End of Transmission Block ETB 24 Cancel CAN 25 End of Medium EM 26 Substit ute SUB 27 Escape ESC 28 FIle Separatef FS 29 GfOUP Separator GS 30 Record Separator RS 31 Unit Separator US 32 Space SP 127 Delete DEL Key ...

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Page 181: ...1200 bps asynchro nous modems Permitted external modems are the Bell 103 the Bell 212 the Vadic 3451 or their equivalents Texas Instruments internal modems can also be used DENMARK Modem Considerations The external modems which can be used on the Public Switched Telephone Network PSTN or on leased lines are the following CCITT V 21 300 bps full duplex asynchronous CCITT V 22 600 or 1200 bps full d...

Page 182: ...rvices Marketing Co ordination Traffic and Accounting Office Farvergade 17 DK 1007 Koebenhavn K FINLAND Modem Considerations F 2 The external modems which can be used on the Public Switched Telephone Network PSTN or on leased lines are the following CCITT V 21 300 or 600 bps full duplex asyn chronous CCITT V 22 1200 bps full duplex asynchronous CCITT V 23 600 or 1200 bps half duplex asynchronous T...

Page 183: ...ations The external modems which can be used on the Public Switched Telephone Network PSTN or on leased lines are the following CCITT V 21 200 or 300 bps full duplex asyn chronous CCITT V 22 600 or 1200 bps full duplex asynchronous CCITT V 23 600 or 1200 bps full duplex asynchronous Modems are leased from the Norwegian Telecommuni cations Administration Texas Instruments internal modems are not ap...

Page 184: ...plex asyn chronous CCITT V 22 1200 bps full duplex asynchronous CCITT V 23 600 or 1200 bps full duplex asynchronous Modems are supplied by the Compania Telefonica Na cional de Espana CTNE For further information con tact the local area office of the CTNE manufacturer who has obtained BT approval Texas Instruments internal modems are not approved and cannot be used on the public network ...

Page 185: ...s full duplex asynchronous Modems are leased by the Swedish Telecommunications Administration STA although in special circum stances privately owned modems are allowed For fur ther information contact the local area office of the CTNE manufacturer who has obtained BT approval Texas Instruments internal modems are not approved and cannot be used on the public network For further information contact...

Page 186: ...ronous CCITT V 22 version C 1200 bps full duplex asynchronous CCITT V 23 600 or 1200 bps full duplex asynchronous Standard modems are leased by the PTT however pri vately owned modems may be used if they are ap proved by PTT Texas Instruments internal modems are not approved and cannot be used on the public network For further information contact PTT General Directorate Telecommunications Berne ...

Page 187: ...s included the ISO hexade cimal codes international ISO character set national ISO char acter set and the extended character set hex codes INTERNATIONAL TO DENMARK NORWAY CROSS REFERENCE ISO Hexadecimal Code 23 24 40 5B 5C 5D 5E 60 7B 7C 7D International ISO Character Set National ISO 0 Character Set IE A Ie 0 a Denmark Norway Extended Character 7E Set Hex Code 23 24 40 92 A6 8F 5E 60 91 ED 86 7E ...

Page 188: ...t 9 A 0 A U e a 0 a u Finland Sweden Extended Character Set Hex Code 23 A7 90 8E 99 8F 9A 82 84 94 86 81 2281309 INTERNATIONAL TO FRANCE CHARACTER CROSS REFERENCE ISO Hexadecimal Code 23 24 40 5B 5C 5D 5E 60 7B 7C 7D 7E International ISO Character Set National ISO Character Set it a C e u e France Extended Character Set Hex Code 9C 24 85 F8 87 15 5E 60 82 97 8A FE 2281310 G 2 ...

Page 189: ...Set 0 U a 0 u 13 Germany Extended Character Set Hex Code 23 24 15 8E 99 9A 5E 60 84 94 81 E1 2281311 INTERNATIONAL TO ITALY CHARACTER CROSS REFERENCE ISO Hexadecimal Code 23 24 40 5B 5C 5D 5E 60 7B 7C 7D 7E International ISO Character Set National ISO Character Set 0 e ti a d e 1 Italy Extended Character Set Hex Code 9C 24 15 F8 87 82 5E 97 85 95 8A 8D 2281304 G 3 ...

Page 190: ... Spain Extended Character Set Hex Code 23 24 15 AD A5 A8 5E 60 F8 A4 INTERNATIONAL TO SWITZERLAND CHARACTER CROSS REFERENCE ISO Hexadecimal Code 23 24 40 5B 5C 5D 5E 60 7B International ISO Character Set National ISO Character Set it e Q e a Switzerland Extended Character Set Hex Code 9C 24 85 82 87 8A 5E 60 84 G 4 7C 0 94 7D 7E Q 87 7E 2281305 7D 7E u 81 FE 2281306 ...

Page 191: ...in which informa tion characters arrive at irregular intervals of time usually bracketed by start elements and stop elements Compare to synchronous transmission auto call feature that allows a terminal to initiate a call automatically over a switched telephone line backup copy a copy of a file that is stored for use in case the original file is destroyed baud baud rate a measure of data transfer r...

Page 192: ...or eight bits EBCDIC code a system of symbols bits for representing data characters control character a character that controls the handling of data cursor a movable spot of light on a display unit usually indicating your position on the display data a general term for any type of information data communications the movement of computer encoded information by means of communications transmission s...

Page 193: ...ow convenient access to specific files duplex describes two operations such as transmitting and receiving full duplex means simultaneous transmission and reception half duplex means transmission or recep tion but not both at the same time EBCDIC Extended Binary Coded Decimal Interchange Code an 8 bit 256 character code used in transmission of binary data EIA Electronic Industries Association the E...

Page 194: ...the task k an abbreviation for the prefix kilo for example 1 000 in decimal notation K in storage capacity an abbreviation meaning two to the tenth power which is 1 024 in decimal notation Kb kilobyte KHz kilohertz A unit of frequency equal to 1 000 hertz line describes cables or telephone lines over which data is transmitted to and received from the computer load to enter data into memory or into...

Page 195: ...diting operating system software that controls the execution of computer programs and that may provide scheduling de bugging input and output control accounting storage assignment data management and related service Some times called Supervisor Executive Monitor Master Con trol Program depending on the computer manufacturer parameter a variable that is given a constant value for a spe cific purpos...

Page 196: ...n of network computers For example compilers monitors edi tors and utility programs Compare to hardware switched line a communications line where the physical path of the messages may be different with each use such as in a public telephone network synchronous transmission transmission in which the data characters and bits are transmitted at a fixed rate with the transmitter and receiver synchroni...

Page 197: ... 2 Attaching cables 2 9 Attended operation A lO AUTOEXEC BATfile 4 25 A 17 Automatic answering D 12 Automatic dialing D 8 D 12 B Batch files 3 19 4 25 A 12 B 3 Brackets 3 9 3 24 Busies 3 18 C 31 Busy handling parameter 3 21 3 27 A 9 Busy sense parameter 3 12 3 27 A 9 C Cable Attaching 2 9 Dedicated 2 11 Direct connect 2 10 Switched 2 12 Call answer ABM 3 17 3 27 C 7 Call origination ABM 3 17 3 27 ...

Page 198: ...etermining 2 4 D 5 Connection Attended A 10 Unattended A 14 Control characters Definition A 15 In type in fields 3 8 Mnemonics 4 1 Remote device control 3 17 A 18 Country code G I G 7 Create function 4 21 4 27 4 30 CTRL key 4 11 CTS clear to send signal 4 20 A 8 C 19 D Data carrier detect DCD signal 4 20 A 9 C 19 Data communications 1 3 Data set ready DSR signal 4 20 A 8 Data signal A 3 Data termi...

Page 199: ...ed data parameter 3 23 A 19 C 15 Display of transmitted data parameter 3 23 A 19 C 16 Display system configuration test 2 S DLE EOT disconnect 3 23 3 27 DOS 2 13 DSR data set ready signal 4 20 A S DTR data terminal ready signal 4 20 A 8 Duplex Full 2 11 Half 2 11 E Echoing local 3 23 End of record 3 17 ENQ character 3 16 EOT disconnect 3 23 Equalization line A 2 Equipment TTY Arrangement of 1 7 As...

Page 200: ...rogrammable 3 4 Usage 3 24 H Half duplex 2 11 Help function 3 24 I In use light 2 9 Inactivity time out parameter 3 20 3 23 3 27 A l4 B 3 C 19 Interface signals and circuits CTS clear to send 4 20 A 8 C 19 DCD data carrier detect 4 20 A 9 C 19 DSR data set ready 4 20 A 8 DTR data terminal ready 4 20 A 8 RD receive data A 7 RI ring indicator A 7 RTS request to send 4 20 A 8 SCA secondary request to...

Page 201: ...5 Manual disconnect A 12 Memory 1 6 2 6 Menus 2 5 Mnemonics control character 3 9 4 10 E l Modem Bell 2 11 Definition 2 11 External 2 7 2 12 3 15 Internal 2 4 2 7 D l Speeds 1 6 3 13 Vadic 2 11 MS DOS Commands 4 20 Diskette 1 5 2 13 N Normal disconnect Batch file 3 19 Sequence 3 19 A 13 A 17 o ON OFF switch 2 5 Operating system 1 5 Operation Attended A I0 Unattended A 14 Index 5 ...

Page 202: ...meter 3 15 3 27 C 25 Point select field 3 9 Port number 2 5 2 7 Printer 3 19 4 19 Printing of completions 3 19 C 27 Programmable keys 3 24 C 28 Protocols Asynchronous 1 4 A 2 Synchronous 1 4 A 2 R RAM memory 2 8 RD receive data signal A 7 Receive data RD signal A 7 Receive new line parameter 3 17 3 27 Receiver overruns 4 20 A 13 Record 3 17 4 15 Record length 4 15 4 30 Remote Computer 3 8 Control ...

Page 203: ...carrier detect signal 4 20 A 9 C 5 Second parameter display 3 16 Secured ABM 3 17 C 32 Function 4 13 Parameters 4 14 Remote 4 27 4 30 Serial Communication port 2 7 Data transfer A 3 Session Parameters 3 6 3 7 C 1 Status 4 19 Setup of parameters 3 5 Signals Data A 3 Franling bits A 6 Parity A 4 Speed modem 1 5 3 13 Start the TTY program 3 3 Statistics function 4 20 A 8 Status display 4 19 A 10 Stop...

Page 204: ...writer 1 4 Terminating TTY 4 25 Third parameter display 3 21 Time out Failsafe 3 20 3 23 A 13 C 19 Inactivity 3 20 3 22 A 13 C 20 Transmit new line 3 17 4 15 Transmitted data TD signal A 7 Type in field 3 8 U Unattended operation A 14 Index 8 ...

Page 205: ...NOTES ...

Page 206: ... does not warrant the Program wiD be free from error or wiD meet your specific require ments You assume complete responsibility for decisions made or actions taken based on information obtained using the Program Any statements made concerning the utility of the Program are not to be construed as expressed or implied warranties TI MAKES NO WARRANTY OR CONDITION EITHER EXPRESSED OR IMPLIED INCLUDING...

Page 207: ...UTION D ARCHIVES LA REPRODUCTION LA COMPILATION INVERSE ET LE DECODAGE SONT INTERDITS CE PRESENT ACCORD D UTILISATION NE VOUS DONNE PAS TITRE DE PROPRIETE SUR LE PROGRAMME LIMITES DE GARANTIE TI ne garantit pas que ce programme soit exempt d erreurs ou qu il reponde Il vos besoins specifiques Vous assurnez entiere responsabilite des decisions et actions prises Ii partir des informations obtenues p...

Page 208: ...ON 0 ARCHIVO SE PROHIBE SU REPRODUCCION NO AUTORIZADA ASI COMO SU COMPILACION EN ORDEN INVERSO Y O SU DESMONTAJE ESTA LICENCIA NO LE OTOR GARA A USTED TITULO DE PROPIEDAD SOBRE EL PROGRAMA LIMITACIONES DEL PROGRAMA TI no garantiza que el Programa se encuentre libre de errores ni que el mismo se ajustara a sus necesidades especiTicas Usted asumira plena responsabilidad por decisiones 0 medi das que...

Page 209: ...NSICHERUNG FUR MODIFIKATIONEN ODER ARCHIVZWECKE ANFERTIGEN JEDES SONSTIGE KOPIEREN AUCH AUSZUGSWEISE SOWlE JEDE ANDERUNG DER SOFTWARE 1ST UNTERSAGT DURCH DEN KAUF DIESER SOFTWARE ERWERBEN SIE KEINE LIZENZ ZUR VERVIELFALTI GUNG WEITERVERBREITUNG ODER VEROFFENTLICHUNG DER SOFTWARE INSGESAMT ODER AUSZUGSWEISE EINGESCHRANKTE GARANTIE FOR SOFTWARE TI garantiert nieht daJ3 das Programm fehlerfrei ist od...

Page 210: ...URATION The media is warranted for a period of three 3 months from the date of original purchase by the Purchaser WARRANTY COVERAGE This limited warranty covers the media including cassettes or diskettes on which the computer program is furnished It does not extend to the program contained on the media or the accom panying book materials collectively the Program The media is warranted against defe...

Page 211: ...lacement Other than the postage re quirement where allowed by state law no charge will be made for the replacement TI strongly recommends that you insure the media for value prior to mailing WARRANTY AND CONSEQUENTIAL DAMAGES DISCLAIMERS ANY IMPLIED WARRANTIES ARISING OUT OF THIS SALE INCLUDING BUT NOT LIMITED TO THE IMPLIED CONDITIONS OR WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR ...

Page 212: ...Houston Texas 77429 Attention Customer Return Area 800 531 1001 Canadian Residents Geophysical Service Incorporated 41 Shelley Road Richmond Hill Ontario Canada L4C 5G4 416 884 9181 Purchasers in California and Oregon may contact the following Texas Instruments offices for additional assistance or information Texas Instruments Consumer Service 831 South Douglas St Suite 119 EI Segundo California 9...

Page 213: ...ROGRAMS AVAILABLE SOLELY ON AN AS IS BASIS IN NO EVENT SHALL TEXAS INSTRUMENTS BE LIABLE FOR SPECIAL COLLATERAL INCIDENTAL OR CONSE QUENTIAL DAMAGES WHETHER ALLEGED AS RE SULT OF BREACH OF CONTRACT BREACH OF WARRANTY OR TORTIOUS CONDUCT THESE EX CLUDED DAMAGES INCLUDE BUT ARE NOT LIMITED TO COST OF REMOVAL OR REINSTALLATION OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF...

Page 214: ......

Page 215: ...y RAM ______ Type of Display ____ Type of Graphics Check If You Have D One Diskette Drive D Two Diskette Drives D Winchester Disk RESPONSE CONCERNS D Hardware l TI Part No D Software Name _______Version No D Manual Serial No if any Did You Run Diagnostics DYes D No Additional Documentation Attached D Yes D No Error Code or Message COMMENTS If your comments concern a manual please include applicabl...

Page 216: ...PLY MAIL FIRST CLASS PERMIT NO 6189 HOUSTON TX POSTAGE WILL BE PAID BY ADDRESSEE Texas Instruments Incorporated Data Systems Group Attn PC Sustaining P O Box 2909 M S 2234 Austin TX 78769 FOLD NO POSTAGE NECESSARY IF MAILED INTHE UNITED STATES ...

Page 217: ...of Memory RAM ______ Type of Display ____ Type of Graphics Check If You Have o One Diskette Drive 0 Two Diskette Drives 0 Winchester Disk RESPONSE CONCERNS o Hardware 1 TI Part No o Software Name _______Version No o Manual Serial No if any Did You Run Diagnostics 0 Yes 0 No Additional Documentation Attached 0 Yes 0 No Error Code or Message COMMENTS If your comments concern a manual please include ...

Page 218: ...REPLY MAIL FIRST CLASS PERMIT NO 6189 HOUSTON TX POSTAGE WILL BE PAID BY ADDRESSEE Texas Instruments Incorporated Data Systems Group Attn PC Sustaining P O Box2909M S2234 Austin TX 78769 FOLD NO POSTAGE NECESSARY IF MAILEO INTHE UNITED STATES ...

Page 219: ...How would you rate the quality of our manuals Accuracy Organization Clarity Completeness Overall design Size Illustrations Examples Index Binding method Good Fair Poor Comments _____________________ How do you find the technical level of our manuals o Written for a more experienced user than yourself o Written for a user with the same experience o Written for a user with less experience What is yo...

Page 220: ...ESS REPLY MAIL FIRST CLASS PERMIT NO 6189 HOUSTON TX POSTAGE WILL BEPAID BY ADDRESSEE Texas Instruments Incorporated Attn Technical Publication MIS 7878 P O Box 1444 Houston TX 77251 FOLD NO POSTAGE NECESSARY IFMAILED INTHE UNITED STATES ...

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Page 222: ...Texas Instruments reserves the right to change its product and service offerings at any time without notice TEXAS INSTRUMENTS TI Part No 2236856 0001 Printed in U s A ...