home *** CD-ROM | disk | FTP | other *** search
-
-
- Recommendation T.504
-
-
-
-
- DOCUMENT APPLICATION PROFILE FOR VIDEOTEX INTERWORKING
-
-
-
-
- CONTENTS
-
-
-
- 1 Scope
- 2 Field of application
- 3 References
- 4 Definitions
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- Fascicle VII.7 - Rec. T.504 1
-
-
-
-
- 5 Characteristics supported by this document application profile
- 5.1 Overview
- 5.2 Logical characteristics
- 5.3 Layout characteristics
- 6 Definition of the document application profile
- 6.1 Overview
- 6.2 Document profile level
- 6.3 Specification of attributes
- Annex A - Summary of ASN.1 object identifiers
-
-
-
-
- 1 Scope
-
-
- 1.1 This Recommendation defines a document application profile which conforms to T.400 Series of Recommendations.
- Its purpose is to specify a document architecture level and a content architecture level, and to select an
- interchange format class suitable for videotex interworking as defined in configuration 1 of Recommendation F.300 and in
- Recommendation T.564.
-
-
- 2 Field of application
-
-
- This Recommendation defines a document that is in conformance with the T.400 Series of Recommendations and
- that allows interworking between two videotex services using configuration 1 defined in CCITT Recommendation F.300 and
- Recommendation T.564. The videotex documents are interchanged only in a formatted form, allowing the recipient to
- reproduce them as intended by the originator.
- This document application profile is defines the features of the document structure that can be interchanged.
-
-
- 3 References
-
-
- - Rec. F.300: Videotex service
- - Rec. X.200: Reference model of open systems interconnection for CCITT applications
- - Rec. X.213: Network service definition for open systems interconnection for CCITT applications
- - Rec. X.214: Transport service definition for open systems interconnection of CCITT applications
- - Rec. X.224: Transport protocol specification for open systems interconnection for CCITT applications
- - Rec. X.215: Session service definition for open systems interconnection of CCITT applications
- - Rec. X.225: Session protocol specification for open systems interconnection for CCITT applications
- - Rec. X.216: Presentation service definition for open systems interconnection for CCITT applications
- - Rec. X.226: Presentation protocol specification for open systems interconnection for CCITT applications
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- 2 Fascicle VII.7 - Rec. T.504
-
-
- - Rec. X.217: Association control service definition for open systems interconnection for CCITT applications
- - Rec. X.227: Association control service specification for open systems interconnection for CCITT
- applications
- - Rec. T.101: International interworking for videotex services
- - Rec. T.400: Introduction to document architecture, transfer and manipulation
- - Rec. T.411: Open document architecture (ODA) and interchange format - Introduction and general principles
- - Rec. T.412: Open document architecture (ODA) and interchange format - Document structures -
- Rec. T.414: Open document architecture (ODA) and interchange format - Document profile
- - Rec. X.415: Open document architecture (ODA) and interchange format - Open document interchange
- format (ODIF)
- - Rec. T.431: Document transfer and manipulation (DTAM) - Services and protocols - Introduction and
- general principles
- - Rec. T.432: Document transfer and manipulation (DTAM) - Services and protocols - Service definition
- - Rec. T.433: Document transfer and manipulation (DTAM) - Services and protocols - Protocol specification
- - Rec. T.441: Document transfer and manipulation (DTAM) - Operational structure
- - Rec. T.523: Communication application profile DM1 for videotex interworking
- - Rec. T.541: Operational application profile for videotex interworking
- - Rec. T.564: Gateway characteristics for videotex interworking
-
-
-
- 4 Definitions
-
-
- The definitions of T.400 Series of Recommendations apply also to this Recommendation.
-
-
-
- 5 Characteristics supported by this document application profile
-
-
- 5.1 Overview
- A videotex document is the information that is retrieved by a single user function and presented as a complete
- entity. Therefore the purpose of this document application profile is to allow the recipient to image the layout of the
- interchanged document as intended by the originator.
- This section specifies the functional description of the features supported by this document application profile.
- 5.2 Logical characteristics
- Not used.
- 5.3 Layout characteristics
- 5.3.1 Layout document structure
- At a given time a document contains one single page which contains one or more blocks.
- The content of the block is:
- - "Videotex" content.
-
-
-
-
-
-
-
-
-
-
- Fascicle VII.7 - Rec. T.504 3
-
-
-
-
- 5.3.2 Document structure elements
- 5.3.2.1Page format
- The page format is expressed in accordance with the definition of the videotex service or videotex terminal, by
- using scaled measurement units. The relation between BMUs and SMUs is specified in the document profile.
- 5.3.2.2Block size
- The position and the dimension of the blocks are restricted to be equal to those of the page. Block size not equal
- to page is for further study.
-
- 6 Definition of the document application profile
-
- 6.1 Overview
- 6.1.1 Document architecture level
- The document application profile makes use of document architecture class FDA as defined in Recommendation
- T.412.
- The document architecture level includes the following structure:
- - a specific layout structure.
- The document architecture level is defined in Tables 1/T.504, 2/T.504 and 3/T.504.
- 6.1.2 Content architecture level
- The content architecture level that may be used in documents conforming to this document application profile is as
- follows:
- - "Videotex"
- Details are specified in Recommendation T.101.
- 6.2 Document profile level
- The document profile level used in this document application profile is defined in Table 4/T.504. Every document
- interchanged in accordance with this document application profile must include a document profile.
- 6.2.1 Interchange format class
- The interchange format class used in this document application profile is "B" as defined in Recommendation T.415.
- 6.2.2 Definition of document structure
- The document structure contains a specific layout structure. The number of hierarchical levels is 3, namely:
- - document layout root;
- - page;
- - block.
- All these levels are mandatory.
- At most one content portion can be associated with one block.
- 6.3 Specification of attributes
- The attributes applicable to constituents of the layout structure are defined in Tables 1/T.504 and 2/T.504, using
- the following notation:
- --- attribute not applicable;
- m attribute is mandatory;
- nm attribute is non-mandatory;
- d attribute is defaultable;
- * exceptionally not used by this document application profile.
-
-
-
-
-
-
-
- 4 Fascicle VII.7 - Rec. T.504
-
-
- TABLE 1/T.504
-
- Attributes applicable to layout objects
-
- w
- ┌─────────────────────────────────┬─────────────┬─────────┬─────────┐
- │ Attribute │ Document │ Page │ Block │
- │ │ layout root │ │ │
- ├─────────────────────────────────┼─────────────┼─────────┼─────────┤
- │ wShared attributesw │ │ │ │
- │ │ │ │ │
- │ - Object type │ m │ m │ m │
- │ - Object identifier (Note 1) │ m │ m │ m │
- │ - Subordinates │ * │ * │ * │
- │ - Content architecture class │ -- │ d │ d │
- │ - Default value list │ nm │ -- │ -- │
- │ - Application comments │ -- │ -- │ d │
- │ │ │ │ │
- │ wLayout attributesw │ │ │ │
- │ │ │ │ │
- │ - Position (Note 2) │ -- │ -- │ d │
- │ - Dimensions (Note 2) │ -- │ d │ d │
- │ - Page position │ -- │ d │ -- │
- │ - Medium type │ -- │ d │ -- │
- └─────────────────────────────────┴─────────────┴─────────┴─────────┘
-
- Note 1 - According to the specifications of Recommendation T.412 this
- attribute may be omitted if the value can be derived unambiguously from the
- transmission sequence of the relevant objects.
-
- Note 2 - For the block, the value of the attributes position and dimensions is
- restricted to those of the page. Using other values is for further study.
-
-
-
-
- TABLE 2/T.504
-
- Attributes applicable to content portions
-
- w
- ┌───────────────────────────────────┬─────────────────────┐
- │ Attribute │ Content portion │
- ├───────────────────────────────────┼─────────────────────┤
- │ - Content identifier │ │
- │ layout (Note 1) │ m │
- │ │ │
- │ - Type of coding │ d │
- │ │ │
- │ - Coding attributes (Note 2) │ d │
- │ │ │
- │ - Content information (Note 2) │ d │
- └───────────────────────────────────┴─────────────────────┘
-
- Note 1 - According to the specifications of Recommendation T.412 this
- attribute may be omitted if the value can be derived unambiguously from
- the transmission sequence of the relevant objects and content portions.
-
- Note 2 - The use of these attributes applicable to content portions is
- specified in Recommenda-tion T.101.
-
-
-
-
-
-
- Fascicle VII.7 - Rec. T.504 5
-
-
-
-
- TABLE 3/T.504
-
- Attribute values for layout objects
-
- w
- ┌────────────────────────┬────────────────────┬─────────────────┬─────────────
- ──────┐
- │ Attribute │ Basic value │ Default │ Non-basic │
- │ │ │ value │ value │
- ├────────────────────────┼────────────────────┼─────────────────┼───────────────────┤
- │ wShared attributesw │ │ │
- │
- │ │ │ │ │
- │ Object type │ Document layout │ None │ None │
- │ │ root │ │ │
- │ │ Page │ │ None │
- │ │ Block │ │ None │
- │ │ │ │ │
- │ Object identifier │ See Rec. T.412 │ None │ None │
- │ │ │ │ │
- │ Content architecture │ Videotex content │ │ None │
- │ class │ architecture │ │ │
- │ │ │ │ │
- │ Default value lists │ See Table 5/T.504 │ None │ None │
- │ │ │ │ │
- │ Application comments │ See Rec. T.564 │See Table 6/T.504│ None │
- │ │ │ │ │
- │ │ │ │ │
- │ wLayout attributesw │ │ │
- │
- │ │ │ │ │
- │ Position │ See Rec. T.412 and │ (0,0) │ None │
- │ │ Notes 1 and 2 │ │ │
- │ │ │ │ │
- │ Dimensions │ See Rec. T.412 and │ (40,24) │ None │
- │ │ Notes 1 and 2 │ │ │
- │ │ │ │ │
- │ Page position │ See Rec. T.412 and │ (0,0) │ None │
- │ │ Note 1 │ │ │
- │ │ │ │ │
- │ Medium type │ See Rec. T.412 │ ((40,24), │ None │
- │ │ │ unspecified) │ │
- └────────────────────────┴────────────────────┴─────────────────┴───────────────────┘
-
- Note 1 - Positions and dimensions are specified by using scaled measurement units. The
- unit scaling factor is defined by the attribute "unite scaling" within the document
- profile. The "nominal page size" within the attribute "medium type" defines the number
- of rows and columns to be imaged on the screen by the videotex application in terms of
- SMUs.
-
- For the block, the position and dimensions are those of the page.
-
- Note 2 - It has to be taken into account that within the national videotex systems
- the position is usually determined by (1,1).
-
-
-
-
-
-
-
-
-
-
-
-
- 6 Fascicle VII.7 - Rec. T.504
-
-
- TABLE 4/T.504
-
- Document profile descriptor
-
- w
- ┌─────────────────────────────────┬───────────┬────────────┬──────────────────
- ────┐
- │ Data element name │ Class │ Value │ Comments │
- ├─────────────────────────────────┼───────────┼────────────┼──────────────────────┤
- │ Document profile descriptor │ M │ │ │
- │ Specific layout structure │ m │ 1 │ Presence of specific │
- │ │ │ │ layout structure │
- │ │ │ │ │
- │ Document characteristics │ M │ │ │
- │ Document application profile │ m │ 0 1 8 16 0 │ Object identifier │
- │ │ │ │ │
- │ Document application │ m │ │ See Note 1 │
- │ profile default │ │ │ │
- │ │ │ │ │
- │ Document architecture class │ m │ 1 │ FDA │
- │ │ │ │ │
- │ Content architecture classes │ m │ 0 1 8 16 3 │ Object identifier │
- │ │ │ │ │
- │ Interchange format class │ m │ "B" │ │
- │ ODA version │ m │ │ │
- │ Unit scaling │ m │ │ │
- │ │ │ │ │
- │ Document management attributes │ NM │ │ See Note 2 │
- │ │ │ │ │
- │ Title │ nm │ │ │
- │ Document date and time │ nm │ │ │
- │ Owners │ nm │ │ │
- │ Document reference │ nm │ │ │
- │ Additional information │ nm │ │ │
- └─────────────────────────────────┴───────────┴────────────┴──────────────────────┘
-
- Note 1 - Default values differing from those defined in T.412 are specified for the
- attributes (see Table 3/T.504):
- -content architecture class;
- -dimensions;
- -page position;
- -medium type.
- Note 2 - The relation specified by this attribute is not taken into account within
- the videotex interworking application. It is used when printing on paper of a
- videotex page is intended.
-
-
- TABLE 5/T.504
-
- Default attributes that may be specified
- in a default value list
-
- w
- ┌──────────────────────────┬─────────────────────────────────────┐
- │ Object type │ Defaultable attribute │
- ├──────────────────────────┼─────────────────────────────────────┤
- │ Page │ Dimensions │
- │ │ Page position │
- │ │ Application comments │
- ├──────────────────────────┼─────────────────────────────────────┤
- │ Block │ Object identifier │
- │ │ Presentation attributes │
-
-
-
- Fascicle VII.7 - Rec. T.504 7
-
-
-
-
- │ │ Dimensions │
- │ │ Position │
- │ │ Application comments │
- ├──────────────────────────┼─────────────────────────────────────┤
- │ Content portion │ Type of coding │
- │ │ Coding attributes │
- │ │ Content information │
- └──────────────────────────┴─────────────────────────────────────┘
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- 8 Fascicle VII.7 - Rec. T.504
-
-
- TABLE 6/T.504
-
- Default values for application defined attributes defined in
- Recommendation T.564 and mapped to the attribute application
- comments defined in Recommendation T.412
-
- w
- ┌───────────────────────────────┬───────────────────────┐
- │ List of attributes │ Default value │
- ├───────────────────────────────┼───────────────────────┤
- │ wBlock:w │ │
- │ Display-indication │ "Mandatory" │
- └───────────────────────────────┴───────────────────────┘
-
-
-
-
-
- ANNEX A
-
- (to Recommendation T.504)
-
-
- Summary of ASN.1 object identifiers
-
-
- This Annex is an integral part of this Recommendation.
-
- w
- ┌──────────────────────────┬──────────────────────────┬───────────────┐
- │ ASN.1 object identifier │ Description │ Section │
- │ value │ │ │
- ├──────────────────────────┼──────────────────────────┼───────────────┤
- │ 0 1 8 16 0 │ Object identifier for │ Table 4/T.504,│
- │ │ this document application│ 6.3 │
- │ │ profile │ │
- └──────────────────────────┴──────────────────────────┴───────────────┘
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- Fascicle VII.7 - Rec. T.504 9
-
-
-
-