Describes the layered model of Open Systems Interconnection (OSI); summarizes the three upper and lower layers; and discusses data communications standards associated with specific layers. Architectural concepts are explored, including hierarchy and abstraction, levels of dialogue, internetworking, and end-to-end communication. OSI is compared…

Explains how the Directory Service (CCITT X.500/ISO 9594) became an international standard in response to the difficulties of keeping data on information network users current and accessible. Uses of X.500 are described, a technical overview is provided, its functions and protocols are assessed, and directory projects and products are discussed.…

Discusses how various Open Systems Interconnection (OSI) application layer protocols can be used together, along with the Presentation and Session protocols, to support the interconnection requirements of applications. Application layer protocol standards that are currently available or under development are reviewed, and the File, Transfer,…

The edi conceptual model is being developed to define common structures, services, and processes that syntax-specific standards like X12 and EDIFACT could adopt. Open Systems Interconnection (OSI) is of interest to edi because of its potential to help enable global interoperability across Electronic Data Interchange (EDI) functional groups. A…

Describes the development of Open Systems Interconnection (OSI) conformance testing sites, conformance testing tools, and conformance testing services. Discusses related topics such as interoperability testing, arbitration testing, and international harmonization of conformance testing. A glossary is included. (24 references) (SD)

Describes microcomputer-based networks which have been implemented at Vanderbilt University's library to support technical services workstations that use NOTIS, catalog with OCLC, and transfer OCLC records to the NOTIS database using GTO (Generic Transfer and Overlay). It is noted that the network configurations can serve as models for other…

Profiles X.400, the Open Systems Interconnection (OSI) Application layer standard that supports interpersonal electronic mail services, facsimile transfer, electronic data interchange, electronic funds transfer, electronic publishing, and electronic invoicing. Also discussed are an electronic directory to support message handling, compatibility…

Presents a model approach to data services in academic research libraries through the Machine Readable Data Center, an information center established at the University of Minnesota to facilitate end-user access to government data files such as the Census. Organizational issues, service issues, and collections issues are addressed; and future plans…

Discussion of text files and textual analysis in humanities research focuses on the results of two surveys of Research Libraries Group (RLG) academic libraries which was conducted to identify the systems used to support text files. Description of a system at the University of Michigan includes examples of screen formats, and seven sidebars…