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Example: Telco Back-end Dispatcher; Re-engineered; J2EE and TIBCO
• Client had a core back-end system which written in Cobol using ACMS (VMS-Alpha) transaction control system from Compaq. There are several front-end applications that make use of this system services like AgentOnline, BASP, IVR, and VPN. All of the communications were made through the static C library called Comtel. The system could not scale to meet the business needs due to the tightly coupled nature of the architecture. The project introduced a component framework based on J2EE and TIBCO messaging middleware. The software acts as a message dispatcher between front-office and back-office applications and allows communication to be held in synchronous as well as asynchronous modes. This framework decouples the interaction between front-end and back-end applications, thus allowing them to be upgraded independently, streamlining both sides.
• Objectives were: to build a unified library supporting many client applications connected to the back-end system; maximize system reusability, flexibility, reliability and scalability; Expose easy to use interfaces, hiding the complexity of the back-end systems; and minimize changes to the client applications when the back-end systems changed.
• Technologies deployed: Compaq Alpha server, SUN sparc, TIBCO, Java, Compaq Alpha Server, TIBCO Rendezvous 6.2, TIBCO SDK 2.3, Solaris 2.7, Windows NT 4.0, Sybase 11 (Linux), Linux 6.1 (Redhat), Open VMS,
• Development tools: MS Project, JDK 1.1.8 (NT, Solaris), JBuilder 2.0, TIBCO Rendez-vous 6.2 for Solaris 2.7, TIBCO SDK 2.3 for Solaris 2.7, MS PVCS 6.5, Rational Rose 2000e, SoDA 1.0, Sun C++ Workshop Compiler V 5.0, ATS 1.0, MSVC 6.0
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