Use of X.25 to Provide the OSI Connection-Mode Network Service for ITU-T Applications - Data Networks and Open System Communications Open Systems Interconnection-General Study Group 7; 42 pp
The OS1 CONS, as stated above, is defined in terms of a set of primitive actions and events and associated parameters For a protocol to support this service, there must be a mapping between the abstract primitives and parameters of the CONS and the real