Web-T27

Release features

Description

Web-T27 is an ActiveX control that provides the complete functionality of a T27 type terminal connected over TCP/IP to a Unisys A-Series mainframe. An HTML page on a web server is accessed from a user's desktop to automatically download the Web-T27 control and associated components. The first access involves component downloads and naturally takes longer to complete than subsequent accesses.

The centralized access to a web server allows Quickware to provide simple management of the profiles and settings required for the end users.

Sample Web-T27 page

In order to perform terminal emulation, the Web-T27 control needs to be given configuration settings and terminal names. Remember that an ActiveX control, being a DLL, is very much the servant to the controlling program. Unlike an executable program it is not launched with its own working directory and command line parameters. It must be told what to do. Each web session starts by accessing a designated file called the profile, which gives the required direction and URL names.

User Access

The users access your web server via the browser on their desktop, as to any web site. The first time they do this the browser will determine that the embedded object is not present and will download it from the codebase specified in the web page. Actually, more than the Web-T27 control is required and these files are packaged as CABinet files that include an INF file, the control and the QTerm font etc.

The control then takes over and accesses the web site to retrieve various settings from the web server. All this is transparent to the user unless an access problem occurs; in which case an error message is displayed.

The user's ability to customize the settings is governed by the contents of the Profile and the security specifications in the settings file.

All things considered, the user is unaware of most of the "under the hood operations" and simply accesses a web page that allows access to a mainframe as if he/she were connecting from a regular terminal or terminal emulator.

Installation

Please refer to the installation description for Server Database mode or Server Files mode.