Terminal emulator is an exemplary and an essential tool for computer users. Mainframes and UNIX based systems offer tremendous power with their command line interfaces. These interfaces can be accessed from the desktop using a terminal emulator.
There are many terminal emulators available in the market for accessing green screens of IBM's System z and IBM i. They use TN3270 and TN5250 protocols for data exchange between the client and the System z and IBM i servers respectively.
IBM and HCL provides a variety of terminal emulators that enable users to access the mainframe applications from PCs and Macs viz.
Why are emulators so important?
Beneath the surface of many of today’s financial, retail, manufacturing and other myriad day-to-day transactions, you’ll find mainframes providing solid back-end services. And, contrary to popular opinion, for all our fascination and headlong rush into a mobile world, many of these transactions are still being driven through green screens and accessed in traditional ways.
Organizations need more than just an emulator
For most organizations, just having a terminal emulator that merely connects to a mainframe application is not sufficient. Along with its core functionality it must be:
Host On-Demand is one such product that not just offers secure access to mainframe applications but also supports out-of-the-box client upgrades, administration of users and host connections.
It supports different Windows, Linux and Mac flavors and provides various options to customize the interface using a rich set of APIs.
Host On-Demand depends on Java to implement secure access to mainframe applications right from user's web browser.
However, with major advancements in browsers' capabilities, plugins such as Java, Flash, Silverlight etc., have become obsolete and are being replaced by the functionalities of HTML5 and Java Script. This severely affects Host On-Demand's browser support as it is currently limited to Microsoft Internet Explorer alone.
Java's browser plugin will cease to exist as it will be removed in future versions of JREs.
Next iteration in the evolution of terminal emulators is to promote flexible access to mainframe applications’ users without any dependencies on 3rd party plugins or restrictions on client devices.
And… Next is now here with HACP EE
HACP Extended Edition (HACP EE) is a plugin free, browser based solution to access green screen applications from practically any device with a web browser.
Refer to this link for more information.
C V N SUNEEL KUMAR
Development & Release Manager, HACP & HATS