HP 800 ACSE/Presentation and ROSE Interface Programmer's Guide - Page 106

Glossary SPAG Standards Promotion and Applications Group; based in Europe and working with COS on the development and promotion of conformance tests procedures for OSI products. TCP transmission control protocol. A network protocol that establishes and maintains connections between nodes. TCP is the transport protocol used in ARPA networks. Internet protocol (IP) addresses are used to identify systems in an ARPA network. Transport Layer Layer 4 of the OSI model; provides end-to-end data integrity between processes. X.400 CCITT standard for electronic message handling systems (e.g., electronic mail) in multivendor environments. X.500 Directory Services An international OSI standard for distributed directory services for multivendor OSI environments. Directory Services refer to any service which stores information about people or things in the world. The most common example of a directory service is the phone book produced by the telephone company. United Kingdom GOSIP The United Kingdom defined set of OSI standards which includes a specific NSAP format. wide area network a network that covers a large area; can be as large as the entire world. X.25 an international networking standard, developed by the CCITT, for the connection of computer equipment to packet switching networks. 106 Glossary