VMS Help V73 Features, OpenVMS e-Business, Reliable Transaction Router (RTR)  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Reliable Transaction Router (RTR) is fault tolerant transactional
    messaging middleware used to implement large, distributed
    applications using client/server technology. Reliable Transaction
    Router enables computing enterprises to deploy distributed
    applications on OpenVMS Alpha and VAX systems.

    Refer to the Reliable Transaction Router for OpenVMS Software
    Product Description (SPD 51.04.xx) included on the e-Business
    CD-ROM for additional information; or you can access the RTR web
    site at:

    http://www.compaq.com/rtr/