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Content for  TR 22.893  Word version:  10.0.0

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1  Scopep. 5

This document studies the technical requirements for carrier grade inter-operator IP Interconnection of Services for the support of Multimedia services provided by IMS and for legacy voice and video PSTN/PLMN services transported over IP infrastructure (e.g. VoIP). These requirements should take into account the new and developing, convergent interconnect models currently being developed outside 3GPP.
Requirements should fulfil:
  • Identification of the technical requirements for IP Service Interconnection (service control and user plane aspects) between Service Providers.
  • Identification of requirements for the Stage 2 & 3 work to identify relevant existing specifications, initiate enhancements and the development of the new specifications as necessary.
  • Supporting of IP Service Interconnection models as defined by other bodies (e.g. GSMA, ETSI, ITU-T).

2  Referencesp. 5

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
TR 21.905: "Vocabulary for 3GPP Specifications".
GSMA PRD IR.34: "Inter-Service Provider IP Backbone Guidelines"
TS 23.003: "Numbering, addressing and identification"

3  Definitions and abbreviationsp. 5

3.1  Definitionsp. 5

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
IP-Interconnection Intermediate Carrier:
a intermediate entity that provides interconnection in different levels (Service, Transport) (e.g. IPX).
IP Service Interconnection:
An IP interconnection where the definition scope goes beyond the pure technical/network scope and takes into account the requirements for the services supported by that interconnection.
IP Packet Exchange:
a relationship model and requirements set defined by GSMA aiming at resolving all IP Service Interconnection functions between/among Service Providers of User-to-User services, through a specialized player called IPX Provider (IPXP), assuring:
  • Openness: for any kind of Service Provider.
  • Quality and security: through a private IPX network, as an alternative to the Internet.
  • Efficiency: multi-service support (one-connection, one agreement).
  • Cascade responsibility in the chain of interconnecting operators.
The entity which offers telecommunication services to the end user by means of a wireless or fixed access (i.e. mobile or fixed network operator).
Service Provider:
A Service Provider is either a network operator or another entity that provides services to a subscriber (e.g. a MVNO).
User-to-User Services:
Are retail services that allow communication between End Users. U2U services need E2E (End-to-End) network support.

3.2  Abbreviationsp. 6

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
IP Packet eXchange
GPRS Roaming eXchange
IPX Provider
User to User
End to End

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