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3GPP Glossaries:  Identifiers

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|  PEI  |  PIX  |  PLMN Id  |  PSI  |  P‑TMSI  |


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Source:   ETSI (SCP) TS 101 220 – Clause 4.2

The PIX is used at the discretion of ETSI and can contain between 7 bytes and 11 bytes of information. The PIX is coded in hexadecimal.
  • Digits 1 to 4: Application code
  • Digits 5 to 8: Country code
  • Digits 9 to 14: Application provider code
  • Digits 15 up to 22: Application provider field (Optional). Up to 8 digits
3GPP PIX Structure


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Source:   TS 23.003, clause 12.1

A Public Land Mobile Network is uniquely identified by its PLMN identifier. PLMN-Id consists of Mobile Country Code (MCC) and Mobile Network Code (MNC).

The MCC and MNC are predefined within a UTRAN, and set in the RNC via OAM.
PLMN-Id Structure


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Source:   TS 23.003, clause 13.5

The public service identity shall take the form of either a SIP URI or a Tel URI. A public service identity identifies a service, or a specific resource created for a service on an application server. The domain part is pre-defined by the IMS operators and the IMS system provides the flexibility to dynamically create the user part of the PSIs.

The PSIs are stored in the HSS either as a distinct PSI or as a wildcarded PSI.

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Source:   TS 23.003, clause 2.1

A P-TMSI is a TMSI allocated for services provided through the SGSN.

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