U5 software for UNIX from Langton enables organisations to use the Internet or videotex networks to connect widely spread users to their corporate systems. Typical applications are:
U5 links into an existing corporate system through a standard API and communicates to the remote users through a range of network gateways. The gateways are independent modules which can co-exist in any arrangement enabling use of a variety of networks (ISDN, PSTN, X25, etc.) and one, two, or more presentation protocols (Internet, Videotex, ASCII etc.) from a single API. The corporate system, whether it is a travel reservation system, a banking suite, an automotive parts system is insulated from the communication methods chosen. Changes to the presentation or to the networks used do not require changes to the host system.
U5 can handle up to 250 simultaneous connections and multiple copies can be run to support any size user population. Gateways are available for all commonly used networks. The U5 API is easy to use, can be tailored by Langton to user requirements, and can be further adapted by the user's own staff. Versions are available for HP-UX, AIX, and SCO. System requirements are modest. U5 is written in C and is fully supported.
Langton's communications products use a mapping system for the Application Programming Interface. Data from the application is mapped into the image for presentation. This image may be an HTML document, a Videotex frame or whatever. The image is held in an appropriate database either on the host or on the Web server. As long as the data can be sent to the user is the same it can be mapped by Langton software into a variety of images. If, say, for some reason one presentation method requires an account number to be in blue text and another presentation requires it to be in italics, or in a different place, or on another form, this will affect only the mapping indicators in the presentation image. There is no change needed to the host application, nor the API.