ADD IU-Common.asn as an attempt to unify the message parsing
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IU-Common { }
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-- Humble attempt of extracting the common part of RUA, HNBAP and RANAP out of
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-- their respective ASN.1 syntax definitions. Hidden in all those information
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-- object classes is a quite classic 'message header' structure that is identical
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-- to all of the messages of the above protocols. Only the actual information element
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-- contents is specified as 'real' ASN.1 complex data type.
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DEFINITIONS AUTOMATIC TAGS ::=
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BEGIN
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maxProtocolExtensions INTEGER ::= 65535
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maxProtocolIEs INTEGER ::= 65535
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Criticality ::= ENUMERATED { reject, ignore, notify }
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ProcedureCode ::= INTEGER (0..255)
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ProtocolIE-ID ::= INTEGER (0..maxProtocolIEs)
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MessageType ::= ENUMERATED { initiatingMessage, successfulOutcome, unsuccessfulOutcome }
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ProtocolIEContainer ::= SEQUENCE (SIZE (0..maxProtocolIEs)) OF ProtocolIE-Field
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ProtocolExtensionContainer ::= SEQUENCE (SIZE (1..maxProtocolExtensions)) OF ProtocolIE-Field
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ProtocolIE-Field ::= SEQUENCE {
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id ProtocolIE-ID,
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criticality Criticality,
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value ANY
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}
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IUCommon-PDU ::= SEQUENCE {
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choice MessageType,
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procedureCode ProcedureCode,
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criticality Criticality,
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protocolIEs ProtocolIEContainer,
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protocolExtensions ProtocolExtensionContainer OPTIONAL,
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...
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}
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END
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