BS EN ISP 11185-1:1996 -Information technology. International standardized profiles FVT2nn. Virtual terminal basic class. Register of control object type definitions - FVT211, FVT212. Sequenced and unsequenced application control objects
CO value; syntax and semantics
The concept of Profiles for OSI, and the structure of the
International Standardized Profiles that document them, are
defined in ISO/IEC TR 10000-1. Such Profiles are divided into
a number of different classes and sub-classes. Two of these
classes contain sub-classes comprising functions of the
Virtual Terminal Basic Class Service and Protocol specified
in the base standards ISO 9040 and ISO 9041. These are the
Application Profiles (A-Profiles) and the Interchange Format
and Representation Profiles (F-Profiles).
The relationship between A-Profiles and F-Profiles is
described in 7.3.2 of ISO/IEC TR 10000-1 and is as follows.
Application Layer base standards require, implicitly or
explicitly, the structure of information carried or referenced by
them to be specified for each instance of communication. It
is the purpose of F-Profiles to specify such information
structures. Particular functional requirements may then be
met by the combination of an A-Profile with one or more F-
Profiles.
Establishment of a VT-association involves the selection by
negotiation of a particular Virtual Terminal Environment profile
(VTE-profile), and of particular values for any arguments of
that VTE-profile. The VTE-profile specification, and possibly
also the values of certain VTE-profile arguments, may in turn
reference the definitions of VT control object types and
assignment types. These VTE-profiles, control object types
and assignment types are thus information structures that
require explicit reference within the VT protocol. Particular
instances of these structures are fully defined within the base
standards, but the base standards also provide for further
instances to be defined by registration.
Each registered
instance constitutes an F-Profile within the framework of
ISO/IEC TR 10000.
BS EN ISP 11185-1:1996 -Information technology. International standardized profiles FVT2nn. Virtual terminal basic class. Register of control object type definitions - FVT211, FVT212. Sequenced and unsequenced application control objects