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2.2M
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8.8 Inter IE dependency
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8.9 Intra IE dependency
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8.10 Support of error handling
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9 Usage of tabular format
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9.1 Tabular description of messages and IEs
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9.1.1 Message description
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9.1.1.1 The general description
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9.1.1.2 The Information Element table
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9.1.1.2.1 Need and multiplicity (Multi) columns
........................................................................................... 14 9.1.1.2.1.1 Mandatory ................................................................................................................................. 15 9.1.1.2.1.2 Optional.....................................................
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9.1.1.2.2 Type and reference column
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9.1.1.2.3 Semantics description
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9.1.1.2.4 Expressing differences between FDD and TDD modes
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9.1.1.3 Explanatory clauses
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9.1.2 IE type description
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9.2 Basic types
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9.2.1 Enumerated
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9.2.2 Boolean
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9.2.3 Integer
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9.2.4 Bit string
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9.2.5 Octet string
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9.2.6 Real
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10 Usage of ASN.1
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10.1 Message level
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10.1.1 Messages
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10.1.2 Message definition
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10.1.3 Messages and ASN.1 modules
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10.1.4 Messages and SDL
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10.2 Information element level
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10.2.1 Message contents
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10.2.2 Optional IEs and default values
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10.2.3 New IEs
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10.2.4 Comprehension required
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10.2.5 Partial decoding
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10.2.6 Error specification
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10.3 Component level
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10.3.1 Extensibility
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10.3.2 Comprehension required
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10.3.3 Partial decoding
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10.3.4 Boolean
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10.3.5 Integer
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10.3.6 Enumerated
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10.3.7 Bit string
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10.3.8 Octet string
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10.3.9 Null
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10.3.10 Sequence
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10.3.11 Sequence-of
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10.3.12 Choice
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10.3.13 Restricted character string types
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10.3.14 IEs and ASN.1 modules
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11 Message transfer syntax specification
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11.1 Selection of transfer syntax specification method
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11.2 Specialised encoding
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11.2.1 General
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11.2.2 Notation in ASN.1
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11.2.3 Notation in ECN
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11.2.3.1 Use of CSN.1
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11.2.3.2 Reference to informally specified encodings in other specifications
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11.2.4 Notation in Link Module
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11.2.5 Detailed and Commented Examples
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11.2.5.1 Example 1
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11.2.5.2 Example 2
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11.2.5.3 Example 3
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11.2.5.4 Example 4
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11.2.5.5 Example 5
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11.2.5.6 Example 6
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11.2.5.7 Example 7
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11.2.5.8 Example 8
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11.2.5.9 Example 9
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11.2.6 Complete Modules
..................................................................................................................................... 37 3G TR 25.921 version 3.1.0 Release 1999 ETSI ETSI TR 125 921 V3.1.0 (2000-03) 5 Release 1999
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11.2.6.1 ASN.1 module
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11.2.6.2 ECN module
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11.2.6.3 Link Module
......................................................................................................................................... 40 Annex A: Change history ..............................................................................................................................41 3G TR 25.921 version 3.1.0...
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1 Scope
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2 References
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3 Abbreviations
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4 Void
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5 Overload and compatibility overview
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5.1 Overload control
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5.1.1 Overload control for MSC (outside MAP)
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5.1.2 Overload control for MAP entities
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5.1.3 Congestion control for Signalling System No. 7
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5.2 Compatibility
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5.2.1 General
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5.2.2 Strategy for selecting the Application Context (AC) ve
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5.2.2.1 Proposed method
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5.2.2.2 Managing the version look-up table
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5.2.2.3 Optimising the method
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6 Requirements concerning the use of SCCP and TC
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6.1 Use of SCCP
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6.1.1 SCCP Class
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6.1.2 Sub-System Number (SSN)
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6.1.3 SCCP addressing
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6.1.3.1 Introduction
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6.1.3.2 The Mobile-services Switching Centre (MSC)
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6.1.3.2.1 MSC interaction during handover or relocation
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6.1.3.2.2 MSC for short message routing
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6.1.3.2.3 MSC for location request routing
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6.1.3.2.4 MSC for LMU Control
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6.1.3.3 The Home Location Register (HLR)
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6.1.3.3.1 During call set-up
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