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3GPP Glossaries

 

 

Identifiers

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 SAC     #  SAI     #  SNAC     #  SNA Id     #  STI     #  STI-rSR     #  S-TMSI     #  STN     #  STN-SR    

 

SAC  —  Service  Area  Code


The last component of the SAI.

Source:   TS 23.003, clause 12.5

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SAI  —  Service  Area  Identifier


The Service Area Identifier (SAI) is used to identify an area consisting of one or more cells belonging to the same Location Area. Such an area is called a Service Area and can be used for indicating the location of a UE to the CN.

The SAC is defined by the operator, and set in the RNC via OAM.
3GPP SAI Structure

 

Source:   TS 23.003, clause 12.5

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SNAC  —  Shared  Network  Area  Code


The last component of the SNA-Id.

Source:   TS 23.003, clause 12.6

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SNA-Id  —  Shared  Network  Area    Identifier


The Shared Network Area Identifier (SNA-Id) is used to identify an area consisting of one or more Location Areas. Such an area is called a Shared Network Area and can be used to grant access rights to parts of a Shared Network to a UE in connected mode (see TS 25.401).
3GPP SNA-ID Structure

 

Source:   TS 23.003, clause 12.6

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STI  —  Session  Transfer  Identifier


A Session Transfer Identifier (STI) is a SIP URI or SIP dialogue ID and is used by the UE to request Session Transfer of a media path.

Source:   TS 23.003, clause 18.5

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STI-rSR  —  Session  Transfer  Identifier    r CS to PS  Single  Radio Voice Call Continuity


A Session Transfer Identifier for CS to PS Single Radio Voice Call Continuity (STI-rSR) is a SIP URI and is used by the UE to request access transfer of a media path.

Source:   TS 23.003, clause 18.8

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S-TMSI  —  SAE    Temporary  Mobile  Subscriber  Identity


The S-TMSI is the shortened form of the GUTI to enable more efficient radio signalling procedures (e.g. paging and Service Request). For paging purposes, the mobile is paged with the S-TMSI.

The S-TMSI shall be constructed from the MMEC and the M-TMSI.
3GPP S-TMSI Structure

 

Source:   TS 23.003, clause 2.9

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STN  —  Session  Transfer  Number


A Session Transfer Number (STN) is a public telecommunication number, as defined by ITU-T Recommendation E.164 and is used by the UE to request Session Transfer of the media path from PS to CS access.

Source:   TS 23.003, clause 18.4

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STN-SR  —  Session  Transfer  Number for    Single  Radio Voice Call Continuity


The Session Transfer Number for Single Radio Voice Call Continuity (STN-SR) is a public telecommunication number, as defined by ITU-T Recommendation E.164 and is used by the MSC Server to request session transfer of the media path from the PS domain to CS domain.

Source:   TS 23.003, clause 18.6

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