ITU-T Rec. X.692 (03/2002) Information technology - ASN.1 encoding rules: Specification of Encoding Control Notation (ECN)
Summary
Source
FOREWORD
CONTENTS
Introduction
1 Scope
2 Normative references
    2.1 Identical Recommendations | International Standards
    2.2 Additional references
3 Definitions
    3.1 ASN.1 definitions
    3.2 ECN-specific definitions
4 Abbreviations
5 Definition of ECN syntax
6 Encoding conventions and notation
7 The ECN character set
8 ECN lexical items
    8.1 Encoding object references
    8.2 Encoding object set references
    8.3 Encoding class references
    8.4 Reserved word items
    8.5 Reserved encoding class name items
    8.6 Non-ECN item
9 ECN Concepts
    9.1 Encoding Control Notation (ECN) specifications
    9.2 Encoding classes
    9.3 Encoding structures
    9.4 Encoding objects
    9.5 Encoding object sets
    9.6 Defining new encoding classes
    9.7 Defining encoding objects
    9.8 Differential encoding-decoding
    9.9 Encoders options in encodings
    9.10 Properties of encoding objects
    9.11 Parameterization
    9.12 Governors
    9.13 General aspects of encodings
    9.14 Identification of information elements
    9.15 Reference fields and determinants
    9.16 Replacement classes and structures
    9.17 Mapping abstract values onto fields of encoding structures
    9.18 Transforms and transform composites
    9.19 Contents of Encoding Definition Modules
    9.20 Contents of the Encoding Link Module
    9.21 Defining encodings for primitive encoding classes
    9.22 Application of encodings
    9.23 Combined encoding object set
    9.24 Application point
    9.25 Conditional encodings
    9.26 Changes to ASN.1 Recommendations | International Standards
10 Identifying encoding classes, encoding objects, and encoding object sets
11 Encoding ASN.1 types
    11.1 General
    11.2 Built-in encoding classes used for implicitly generated encoding structures
    11.3 Simplification and expansion of ASN.1 notation for encoding purposes
    11.4 The implicitly generated encoding structure
12 The Encoding Link Module (ELM)
    12.1 Structure of the ELM
    12.2 Encoding types
13 Application of encodings
    13.1 General
    13.2 The combined encoding object set and its application
14 The Encoding Definition Module (EDM)
15 The renames clause
    15.1 Explicitly generated and exported structures
    15.2 Name changes
    15.3 Specifying the region for name changes
16 Encoding class assignments
    16.1 General
    16.2 Encoding structure definition
    16.3 Alternative encoding structure
    16.4 Repetition encoding structure
    16.5 Concatenation encoding structure
17 Encoding object assignments
    17.1 General
    17.2 Encoding with a defined syntax
    17.3 Encoding with encoding object sets
    17.4 Encoding using value mappings
    17.5 Encoding an encoding structure
    17.6 Differential encoding-decoding
    17.7 Encoding options
    17.8 Non-ECN definition of encoding objects
18 Encoding object set assignments
    18.1 General
    18.2 Built-in encoding object sets
19 Mapping values
    19.1 General
    19.2 Mapping by explicit values
    19.3 Mapping by matching fields
    19.4 Mapping by #TRANSFORM encoding objects
    19.5 Mapping by abstract value ordering
    19.6 Mapping by value distribution
    19.7 Mapping integer values to bits
20 Defining encoding objects using defined syntax
21 Types used in defined syntax specification
    21.1 The Unit type
    21.2 The EncodingSpaceSize type
    21.3 The EncodingSpaceDetermination type
    21.4 The UnusedBitsDetermination type
    21.5 The OptionalityDetermination type
    21.6 The AlternativeDetermination type
    21.7 The RepetitionSpaceDetermination type
    21.8 The Justification type
    21.9 The Padding type
    21.10 The Pattern and Non-Null-Pattern types
    21.11 The RangeCondition type
    21.12 The SizeRangeCondition type
    21.13 The ReversalSpecification type
    21.14 The ResultSize type
    21.15 The HandleValue type
22 Commonly used encoding property groups
    22.1 Replacement specification
    22.2 Pre-alignment and padding specification
    22.3 Start pointer specification
    22.4 Encoding space specification
    22.5 Optionality determination
    22.6 Alternative determination
    22.7 Repetition space specification
    22.8 Value padding and justification
    22.9 Identification handle specification
    22.10 Concatenation specification
    22.11 Contained type encoding specification
    22.12 Bit reversal specification
23 Defined syntax specification for bit-field and constructor classes
    23.1 Defining encoding objects for classes in the alternatives category
    23.2 Defining encoding objects for classes in the bitstring category
    23.3 Defining encoding objects for classes in the boolean category
    23.4 Defining encoding objects for classes in the characterstring category
    23.5 Defining encoding objects for classes in the concatenation category
    23.6 Defining encoding objects for classes in the integer category
    23.7 Defining encoding objects for the #CONDITIONAL-INT class
    23.8 Defining encoding objects for classes in the null category
    23.9 Defining encoding objects for classes in the octetstring category
    23.10 Defining encoding objects for classes in the optionality category
    23.11 Defining encoding objects for classes in the pad category
    23.12 Defining encoding objects for classes in the repetition category
    23.13 Defining encoding objects for the #CONDITIONAL-REPETITION class
    23.14 Defining encoding objects for classes in the tag category
    23.15 Defining encoding objects for classes in the other categories
24 Defined syntax specification for the #TRANSFORM encoding class
    24.1 Summary of encoding properties and defined syntax
    24.2 Source and target of transforms
    24.3 The int-to-int transform
    24.4 The bool-to-bool transform
    24.5 The bool-to-int transform
    24.6 The int-to-bool transform
    24.7 The int-to-chars transform
    24.8 The int-to-bits transform
    24.9 The bits-to-int transform
    24.10 The char-to-bits transform
    24.11 The bits-to-char transform
    24.12 The bit-to-bits transform
    24.13 The bits-to-bits transform
    24.14 The chars-to-composite-char transform
    24.15 The bits-to-composite-bits transform
    24.16 The octets-to-composite-bits transform
    24.17 The composite-char-to-chars transform
    24.18 The composite-bits-to-bits transform
    24.19 The composite-bits-to-octets transform
25 Complete encodings and the #OUTER class
    25.1 Encoding properties, syntax and purpose for the #OUTER class
    25.2 Encoder actions for #OUTER
    25.3 Decoder actions for #OUTER
Annex A - Addendum to ITU-T Rec. X.680 | ISO/IEC 8824-1
A.1 Exports and imports clauses
A.2 Addition of REFERENCE
A.3 Notation for character string values
Annex B - Addendum to ITU-T Rec. X.681 | ISO/IEC 8824-2
B.1 Definitions
B.2 Additional lexical items
B.3 Addition of "ENCODING-CLASS"
B.4 FieldSpec additions
B.5 Fixed-type ordered value list field spec
B.6 Fixed-class encoding object field spec
B.7 Variable-class encoding object field spec
B.8 Fixed-class encoding object set field spec
B.9 Fixed-class ordered encoding object list field spec
B.10 Encoding class field spec
B.11 Ordered value list notation
B.12 Ordered encoding object list notation
B.13 Primitive field names
B.14 Additional reserved words
B.15 Definition of encoding objects
B.16 Additions to "Setting"
B.17 Encoding class field type
Annex C - Addendum to ITU-T Rec. X.683 | ISO/IEC 8824-4
C.1 Parameterized assignments
C.2 Parameterized encoding assignments
C.3 Referencing parameterized definitions
C.4 Actual parameter list
Annex D
  - Examples
D.1 General examples
D.2 Specialization examples
D.3 Explicitly generated structure examples
D.4 A more-bit encoding example
D.5 Legacy protocol specified with tabular notation
Annex E - Support for Huffman encodings
Annex F - Additional information on the Encoding Control Notation (ECN)
Annex G - Summary of the ECN notation
G.1 Terminal symbols
G.2 Productions