38 lines
1.4 KiB
Groff
38 lines
1.4 KiB
Groff
-- $Id$
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-- Module ISO9576-PRESENTATION (X.236)
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ISO9576-CONNECTIONLESS-PRESENTATION DEFINITIONS ::=
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BEGIN
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--
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-- The value of the SS-user data parameter of the S-UNIT-DATA request and indication
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-- session-service primitives shall be a UD-type value, followed as a requestor's
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-- option by zero or more UDC-type values.
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--
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UD-type ::= SEQUENCE {
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protocol-version [0] IMPLICIT Protocol-version DEFAULT {version-1},
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calling-presentation-selector [1] IMPLICIT Calling-presentation-selector OPTIONAL,
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called-presentation-selector [2] IMPLICIT Called-presentation-selector OPTIONAL,
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presentation-context-definition-list [4] IMPLICIT
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Presentation-context-definition-list OPTIONAL,
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user-data User-data
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}
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-- Shall be the parameters of the UD PPDU.
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--
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-- As an initiator's option, the presentation data values contained in a UD PPDU may be
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-- encoded more than once, using UDC-type values, to allow the transfer of the same
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-- presentation data values using a number of different transfer syntaxes.
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--
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UDC-type ::= User-data
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-- Shall not be present if the Presentation context definition list parameter is not present
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-- in the UD PPDU. Each instance of this data type shall contain all of the presentation data
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-- values which were contained in the User data parameter of the UD PPDU.
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-- This shall be the same set of presentation data values which were contained in the UD-type.
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--
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-- WS: trunkated here as the rest is present in ISO8823-PRESENTATION.asn.
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END
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