This standard defines the externally visible services provided by the OS1 session layer by means of abstraction and the following terms: a. Primitive actions and events of the service; b. Parameter data associated with each primitive action and event; c. Primitive action The relationship and effective sequence between events and events. The services defined in this standard are those provided by the OS1 session protocol (together with transport services) and used by the OSI presentation protocol. This standard does not specify individual implementations or products, nor does it impose restrictions on the implementation of entities and interfaces within a computer system. Therefore, there is no conformance requirement to this standard.
GB/T 15128-1994 history
2008GB/T 15128-2008 Information technology.Open Systems Interconnection.Session service definition
1994GB/T 15128-1994 Information processing systems--Open Systems Interconnection--Basic connection oriented session service definition