Nortel Networks VT100 manual Terminals connected to a host computer

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1-2About the VT100 Gateway

Figure 1-1

Terminals connected to a host computer

Host	VT100 Terminals

The VT100 terminal uses an asynchronous communication protocol to transmit characters to and from a host computer. The VT100 Gateway communicates with a host through a serial port and a modem, or through a serial port and a direct connection. With respect to the VT100 Gateway product, a host computer is any computer that can accept a VT100 terminal connection, including mainframes, minicomputers, and workstations.

The standard VT100 terminal has a 24x80 character display, and can be accessed non-sequentially. This means the terminal can access text anywhere on the screen. This allows you to delete and insert text, scroll the page, and move the cursor to any position on the screen. Your ability to access the VT100 screen non-sequentially depends on the host application you are using.

Figure 1-2 shows a sample VT100 terminal running a sample host application. This sample accounting application is used throughout the guide to illustrate how to develop applications using the VT100 Gateway.

Note: The screens shown in this guide are examples only and are not part of any real application.

555-9001-316 Standard 1.0 February 1996

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Contents Meridian IVR Publication history FebruaryIii Contents Appendix a Host error messages IVR 2.0/I call flow interfaceGlossary Glossary-1 List of figures List of tables List of proceduresHow to use this guide About this guideWho should use this guide Additional Nortel manuals Appendix a Host error messagesConventions used in this guide IVR 2.0/I call flow interfaceVT100 terminal About the VT100 GatewayTerminals connected to a host computer VT100 application screen sample Vt100VT100 Gateway software Meridian IVR 2.0/I VT100 Gateway configurationTRS communication process 6About the VT100 Gateway Determining the required transactions Template files2Template files Customer follows this sequence to retrieve data Shows how screen templates relate to action templatesAction and screen templates Action templates Procedure Accessing transaction informationAction template syntax Action template syntaxAction template for accounting application #commentReset-action Action-nameApp-name Reset-action template sequence sample Logout-action Reset-action template sampleLogout action flow Manual mode optional field Screen-templateLogout-action template sample Screen templates Screen showing fields and the system prompt Application screen for accounting application Screen template syntaxScreen template syntax Screen template for accounting application Validation-tag offset Screen-nameField-descriptor Validation-tagField-descriptor syntax Row,column ﬁeld-name ﬁeld I/OTemplate files Valid ﬁeld I/O entries Entry Description $numText Key-descriptor line syntax Key-descriptorValid key names TABSleep-descriptor syntax Sleep-descriptor optionalInitial-action templates Getting started Before using the VT100 GatewayScreen.conf file Keyword Begin string optionalEnd string Screen.conf file Setting up the trs.conf fileSession-number Board-numberInitial-action template Initial-action Template Initial-templateHeartbeat ProtocolExample trs.conf File Trs.conf file for accounting application Setting up the vt100.ctl fileVt100.ctl file for accounting application Vt100.ctl file syntaxTRS default communication settings Setting up the com.conf fileDevice-name Terminal-typeIxon Parity Baud RateInitial-action template Complete sample transactionTemplates Initial-action template for accounting applicationGetting started 16Getting started Action template performing a transaction 18Getting started Action Template Reset-action template for accounting applicationLogout-action template for accounting application IVR 2.0/I call flow interface Accessing the mainframeActivating the gateway from a Comi cell Setting the Comi cell parametersComi cell parameter window Comi cell name Call Audit EnabledCall Audit Information Comi action templateComi cell timeout Comi cell buffer countComi cell input buffers Setting the Como cell parameters Como cell parameter window Como cell nameComo cell blocking? Como cell buffer countComo cell output buffers Como cell branches Como cellBranches of the Como cell Reason the branch would be taken Coma cell in the Cleanup branch of a Start cell Setting the Coma cell parametersAn application using the COMI, COMO, and Coma cells 12IVR 2.0/I call flow interface Application cell functions Step Description 14IVR 2.0/I call flow interface Templates Corresponding Screens COMI/COMO cell parameters, TRS templates, and VT100 screensTerminal Resource Server TRS Messages Appendix a Host error messagesERR Createscreentemplates ERR LoadruntimeconfigERR Createactiontemplates ERR OrdertemplatesERR xx Sessions are Operational ERR All available sessions are non-operationalERR Unable to create Session Object Instance ERR Unable to create Process Object InstanceERR BD xx SS xxx ERR start host notify ERR xx is not a keywordERR CH=xx ERRRequest does not contain action name ERR CH= xx ERRInvalid action nameERR CH=xx ReadUpdateERR Createtimerinstance ERR CH=xx ReadinputERR CreatetimerinstanceERR CH=xx BD xxx SS xxx ReadinputERR copy PS ERR CH=xx BD xxx SS xxxx ReadinputERR Query cursorERR Send Aid key failed ERR CH=xx ProcessERR Syntax error for variable operationERR CH=xx ProcessERR write to screen ERR msgwaitstartERR Received a Service Free Message ERR Received a service abort from the TRS ServerERR 3270 Envoy Process Startup ERR Process StartupERR CH=xx illegal Command ERR Server Node file trs.node does not existERR Invalid Aid key specified use the Enter Key ERR Sendwithaid failed with return code ERR Sendwithaid Connect to session xx failedERR Writetoscreen Connect request to session xx failed ERR Writetoscreen Writing of input xx failed10Host error messages ERR Configuration file trs.conf not found ERR Createidletimer Idle timer memory allocation failedERR No Application field in trs.conf ERR An invalid entry in the trs.confERR Incorrect syntax for ping action ERR Protocol missing, specify 3270 or VT100ERR Invalid Protocol xxx, protocol ERR Invalid entry non-numericERR Last LU cannot be greater than ERR First LU cannot be less thanERR An Invalid Board# xx is specified ERR Couldn’t create appl objectERR In ../3270/buf.datpassword xx exceeds xxx characters ERR In ../3270/lubuf.datloginid xx exceeds xxx charactersERR in map.datSession xx not defined in trs.conf ERR read data from file ../3270/lubuf.datERR In ../3270/lubuf.datlubuf2 exceeds xx characters ERR In ../3270/lubuf.datlubuf1 exceeds xx charactersERR Unable to open screen file ERR Memory allocation failure for Screen entryERR Field id xx exceeds xxx characters ERR Parse string xx of screenERR Memory allocation failure for Action entry ERR Open action file xx failedERR Read head data from action file ERR Read screen name from action fileERR Unable to open Information Logger ERR Settimer Error setting interval timer structERR Buffer size is greater than ERR No row/column delimiter for screen templateVT100 Gateway terms GlossaryChannel System administratorComa Cell Comi CellTransaction VT100 terminalGlossary-3 Page February