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- 9.6.1.7Checkpoint mechanism
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- This parameter specifies the mechanism for checkpointing in DTAM-PM, and the following mechanisms are defined:
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- 1) Mechanism 1
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- The places where to insert the checkpoints are related to a maximum size (integral number of octets)
- indicated by the DTAM user. A checkpoint should be set at the end of each segment and a segment
- should be composed of the greatest number of integral IDE (Interchange-Data-Element) which is inferior or
- equal to the maximum size. If the document is smaller than the maximum size, then no checkpoint is
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- required.
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- 2) Mechanism 2
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- The places where to insert the checkpoints are related to a number of IDEs indicated by the DTAM user. A
- checkpoint should be set at the end of each segment and a segment should be composed of the number
- of integral IDE which is indicated by the user. Only the number of IDE of the last segment is equal or
- inferior to the indicated number.
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- Note - Some applications may not count IDEs of Document Profile and Document Root.
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- 9.7 D-TYPED-DATA service
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- Typed data transmission is used independent of the data token and is issued from both DTAM users when
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- required.
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- The related service structure consists of two events, as illustrated in Figure 8/T.432.
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- FIGURE 8/T.432
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- D-TYPED-DATE service events
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- 9.7.1 D-TYPED-DATA service parameters
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- The parameters of D-TYPED DATA are listed in Table 7/T.432.
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- TABLE 7/T.432
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- D-TYPED-DATA service parameters
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- ┌───────────────────────┬─────────────────────────┬─────────────────────────┐
- │ Parameter │ D-TYPED DATA request │ D-TYPED DATA indication │
- ├───────────────────────┼─────────────────────────┼─────────────────────────┤
- │ Typed-data information│ M │ M(=) │
- │ │ │ │
- └───────────────────────┴─────────────────────────┴─────────────────────────┘
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- 1 Fascicle VII.7 - Rec. T.432
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- 9.7.1.1 Typed-data information
- Typed-data information is chosen from the following strings:
- - NumericString;
- - PrintableString;
- - TeletexString;
- - VideotexString;
- - VisibleString;
- - OctetString;
- - IA5String;
- - GraphicString.
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- 9.8 D-UNCONFIRMED-CREATE service
- The document create operation procedure is used by the requestor of document
- manipulation to add the constituents of ODA and Operational Structure to a document
- without any confirmation of the create manipulation.
- The related service structure consists of two events, as illustrated in Figure
- 9/T.432.
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- FIGURE 9/T.432
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- D-CREATE service events
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- 9.8.1D-UNCONFIRMED-CREATE service parameters
- Table 8/T.432 lists the D-UNCONFIRMED-CREATE service parameters.
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- TABLE 8/T.432
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- D-UNCONFIRMED-CREATE service parameters
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- ┌──────────────────────┬─────────────────────┬─────────────────────┐
- │ Parameter │ D-CREATE │ D-CREATE │
- │ │ request │ indication │
- ├──────────────────────┼─────────────────────┼─────────────────────┤
- │ Create information │ M │ M(=) │
- │ │ │ │
- └──────────────────────┴─────────────────────┴─────────────────────┘
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- 9.8.1.1 Create information
- This parameter consists of a sequence of sequences of Parent Object or Class
- Identifiers and Objects which are as defined in Recommendations T.412 and T.441.
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- 9.9 D-UNCONFIRMED-DELETE service
- The document delete operation procedure is used by the requestor of document
- manipulation to delete the constituents of ODA and Operational Structure of an existing
- document without any confirmation of the delete operation.
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- Fascicle VII.7 - Rec. T.432 2
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- The related service structure consists of two events, as illustrated in Figure
- 10/T.432.
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- FIGURE 10/T.432
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- D-DELETE service events
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- 9.9.1D-UNCONFIRMED-DELETE service parameters
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- Table 9/T.432 lists the D-UNCONFIRMED-DELETE service parameters.
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- TABLE 9/T.432
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- D-UNCONFIRMED-DELETE service parameters
- w
- ┌──────────────────────┬─────────────────────┬─────────────────────┐
- │ Parameter │ D-DELETE │ D-DELETE │
- │ │ request │ indication │
- ├──────────────────────┼─────────────────────┼─────────────────────┤
- │ Delete information │ M │ M(=) │
- │ │ │ │
- └──────────────────────┴─────────────────────┴─────────────────────┘
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- 9.9.1.1 Delete information
- This parameter consists of a sequence of Object or Class of Identifiers, Content
- Portion Identifiers and Operational Information Identifiers which are as defined in
- Recommendations T.412 and T.441.
- 9.10 D-UNCONFIRMED-MODIFY service
- The document modify operation procedure is used by the requestor of document
- manipulation to modify the attributes of constituents of ODA and Operational Structure of
- an existing document without any confirmation of the modify operation.
- The related service structure consists of two events, as illustrated in Figure
- 11/T.432.
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- FIGURE 11/T.432
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- D-MODIFY service events
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- 3 Fascicle VII.7 - Rec. T.432
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- 9.10.1 D-UNCONFIRMED-MODIFY service parameters
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- Table 10/T.432 lists the D-UNCONFIRMED-MODIFY service parameters.
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- TABLE 10/T.432
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- D-UNCONFIRMED-MODIFY service parameters
- w
- ┌──────────────────────┬─────────────────────┬─────────────────────┐
- │ Parameter │ D-MODIFY │ D-MODIFY │
- │ │ request │ indication │
- ├──────────────────────┼─────────────────────┼─────────────────────┤
- │ Modify information │ M │ M(=) │
- │ │ │ │
- └──────────────────────┴─────────────────────┴─────────────────────┘
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- 9.10.1.1 Modify information
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- This parameter is a sequence of sequences of Current Object or Class Identifiers and
- Objects which are as defined in Recommendations T.412 and T.441.
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- 9.11 D-UNCONFIRMED-CALL service
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- This procedure is used to address or to read an object of Operational Structure
- which contains a sequence of DTAM protocol data units (with some restrictions, i.e. that
- only D-CREATE, D-DELETE and D-MODIFY can appear in this sequence). These protocol data
- units are applicable to the existing document.
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- The related service structure consists of two events, as illustrated in Figure
- 12/T.432.
- FIGURE 12/T.432
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- D-CALL service events
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- 9.11.1 D-UNCONFIRMED-CALL service parameters
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- Table 11/T.432 lists the D-UNCONFIRMED-MODIFY service parameters.
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- TABLE 11/T.432
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- D-UNCONFIRMED-CALL service parameters
- w
- ┌──────────────────────┬─────────────────────┬─────────────────────┐
- │ Parameter │ D-CALL │ D-CALL │
- │ │ request │ indication │
- ├──────────────────────┼─────────────────────┼─────────────────────┤
- │ Call information │ M │ M(=) │
- │ │ │ │
- └──────────────────────┴─────────────────────┴─────────────────────┘
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- Fascicle VII.7 - Rec. T.432 4
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- 9.11.1.1 Call information
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- This parameter is a sequence of choices of Current Object Identifier which are
- defined in Recommendation T.441.
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- 9.12 D-UNCONFIRMED-REBUILD service
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- This procedure is used to delete an object of ODA and/or the Operational Structure
- (and all the subordinates of this object, if any) and create an object immediately after
- this particular object, updating the attributes of the object with the values carried by
- the D-REBUILD operation.
- This service is for further study.
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- 9.13 D-TOKEN-GIVE service
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- The token-give procedure is used by a sender (requestor) to give the data token to
- the receiver (responder), when the sender wants to give the right to manipulate
- documents.
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- The requestor becomes the receiver and the responder becomes the sender. The related
- service structure consists of two events, as illustrated in Figure 13/T.432.
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- FIGURE 13/T.432
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- D-TOKEN-GIVE service events
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- 9.13.1 D-TOKEN-GIVE service parameters
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- D-TOKEN-GIVE service has no parameters.
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- 9.14 D-CONTROL-GIVE service
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- The control-give procedure is used by a sender (requestor) to give all the tokens to
- the receiver (responder). This service can only be requested when the document bulk
- transfer functional unit has been selected and the requestor owns all the tokens.
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- The related service structure consists of two events, as illustrated in Figure
- 14/T.432.
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- FIGURE 14/T.432
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- D-CONTROL-GIVE service events
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- 5 Fascicle VII.7 - Rec. T.432
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- 9.14.1 D-CONTROL-GIVE service parameters
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- D-CONTROL-GIVE service has no parameters.
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- 9.15 D-TOKEN-PLEASE service
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- The token-please procedure is used by a receiver (requestor) to request the data
- token from
- the sender (responder), when the receiver wants to request the right to transfer or
- manipulate documents.
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- The related service structure consists of two events, as illustrated in Figure
- 15/T.432.
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- FIGURE 15/T.432
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- D-TOKEN-PLEASE service events
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- 9.15.1 D-TOKEN-PLEASE service parameters
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- Table 12/T.432 lists the D-TOKEN-PLEASE service parameters.
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- TABLE 12/T.432
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- D-TOKEN-PLEASE service parameters
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- w
- ┌──────────────────────┬─────────────────────┬─────────────────────┐
- │ Parameter │ D-TOKEN-PLEASE │ D-TOKEN-PLEASE │
- │ │ request │ indication │
- ├──────────────────────┼─────────────────────┼─────────────────────┤
- │ Tokens priority │ U │ C(=) │
- │ │ │ │
- └──────────────────────┴─────────────────────┴─────────────────────┘
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- Note - In the case of using Session service as a lower layer service, this parameter
- may not be mapped into the session service in Recommendation X.215 applied.
- 9.15.1.1 Tokens priority
- This parameter defines the priority of the action, governed by the data token, that
- the requestor of the D-TOKEN-PLEASE service wishes to carry out. This parameter has to be
- supplied by the requestor of the D-TOKEN-PLEASE service.
- 9.16 D-P-EXCEPTION-REPORT service
- The provider-exception reporting service permits DTAM users to be notified of
- unanticipated situations not covered by other services. If a service cannot be completed
- due to DTAM-service provider protocol errors or malfunctions, the provider-exception
- reporting service is used to indicate this to both DTAM users.
- If used with the document bulk transfer service, the provider-exception reporting
- service is only permitted while a D-TRANSFER service is in progress or waiting for the D-
- CAPABILITY confirm primitive.
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- Fascicle VII.7 - Rec. T.432 6
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- Following a D-P-EXCEPTION-REPORT indication, and until the error condition is
- cleared:
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- a) typed-data information (D-TYPED-DATA service , document informations (D-
- TRANSFER service) will be discarded by the DTAM-service-provider;
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- b) synchronization point indications will not be giv n to the DTAM-service-
- provider.
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- On receipt of a D-P-EXCEPTION-REPORT indication, either DTAM user initiates one of
- the following services to clear the error:
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- c) abort;
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- d) retry of the transmission of the document information;
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- e) give the data token.
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- DTAM users are not permitted to initiate any other services until the error is
- cleared.
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- The related service structure consists of two events, as illustrated in Figure
- 16/T.432.
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- FIGURE 16/T.432
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- D-P-EXCEPTION-REPORT service events
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- 9.16.1 D-P-EXCEPTION-REPORT service
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- Table 13/T.432 lists the D-P-EXCEPTION-REPORT service.
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- TABLE 13/T.432
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- D-P-EXCEPTION-REPORT service parameters
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- w
- ┌──────────────────────────┬─────────────────────────────┐
- │ Parameter │ D-P-EXCEPTION-REPORT │
- │ │ indication │
- ├──────────────────────────┼─────────────────────────────┤
- │ Reason │ M(=) │
- └──────────────────────────┴─────────────────────────────┘
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- 9.16.1.1 Reason
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- Reason is a parameter specifying the reason for the exception report. Its value is
- one of:
- a) protocol error;
- b) not sufficient storage capacity for transmission at the receiver;
- c) non-specific error.
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- 7 Fascicle VII.7 - Rec. T.432
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- In a Normal Mode, the storage capacity parameter is optionally used by each of two
- DTAM protocol machines to indicate its own capacity to the peer. After the negotiation,
- if the storage capacity of the receiving DTAM-PM is smaller than the largest segment of
- document information (see 6.6) according to the checkpoint rule, the sending DTAM-
- PM shall not transfer the document and D-P-EXCEPTION indication should be issued to the
- sending DTAM user.
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- 9.17 D-U-EXCEPTION-REPORT service
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- The user-exception reporting service permits a DTAM user to report an exception
- condition.
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- The detailed definition of this service is for further study.
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- 9.18 Reliable transfer support service
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- Reliable transfer support service provides the communication secured as DTAM
- functionalities.
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- Two types of Reliable Transfer Mode are defined as follows:
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- 1) Reliable transfer mode 1
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- In this mode, the DTAM-Service-provider performs the reliable transfer of a
- document but, in case of problem, it will interrupt the transfer and indicate
- to the user that the transfer has not been completed. The user will then have
- the responsibility to start a new transmission by using the D-TRANSFER request
- primitive with the appropriate parameters.
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- 2) Reliable transfer mode 2
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- In this mode, the DTAM-Service-provider performs the complete reliable
- transfer of a document. If the transfer is interrupted, the recovery is under
- the responsibility of the DTAM-PM. If the document is not transferred within
- the transfer-time, this will be indicated to the user.
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- Fascicle VII.7 - Rec. T.432 8
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