Numbering & addressing

Introduction

The International Telecommunication Union (ITU-T) has set out the principles of international public telecommunication numbering for the fixed network in their Recommendation E.164. However, the widespread use of the Internet has meant that it is becoming more and more necessary to unify the E.164 telephone numbering scheme with the addressing schemes used in the Internet.

The Internet uses the Domain Name System (DNS) to provide IP addresses, among other things. Specification RFC 3761 from the Internet Engineering Task Force (IETF) defines ENUM (Electronic Numbering) and provides a suite of protocols to enable callers or networks to determine if a called party can be contacted over the internet. ENUM facilitates the transfer of traffic from public telecommunications networks to the Internet.

RFC 3761 specifies how the DNS can be used for storage of E.164 numbers. More specifically, it shows how DNS can be used for identifying available services connected to one E.164 number.

Our Role & Activities

TC NTECH has the task of working on issues concerning Numbering, Naming, Addressing and Routeing. It is responsible for:

  • Co-ordination of the numbering and addressing issues within ETSI, and contributing to ITU-T Study Group 2
  • Addressing and Naming translation
  • Collaborating with CEPT/ECC WG NaN (Numbering and Networks)
  • Collaborating with ERO (the European Radio Office) on European numbering, naming and addressing issues

Standards

The following is a list of the latest published ETSI standards on numbering and addressing.

A full list of related standards in the public domain is accessible via the ETSI standards search. Via this interface you can also subscribe for alerts on updates of ETSI standards.

For work in progress see the ETSI Work Programme on the Portal.

Standard No. Standard title.
TS 123 003 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Numbering, addressing and identification (3GPP TS 23.003 version 12.8.0 Release 12)
TR 102 300-5 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Designers' guide; Part 5: Guidance on numbering and addressing
TS 101 220 Smart Cards; ETSI numbering system for telecommunication application providers (Release 12)
TS 101 376-3-3 GEO-Mobile Radio Interface Specifications (Release 3); Third Generation Satellite Packet Radio Service; Part 3: Network specifications; Sub-part 3: Numbering, addressing and identification; GMR-1 3G 23.003
TS 100 392-15 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 15: TETRA frequency bands, duplex spacings and channel numbering
TR 184 007 Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Naming/Numbering Address Resolution (NAR)
TS 184 006 Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Interconnection and Routeing requirements related to Numbering and Naming for NGNs; NAR Interconnect
TS 100 927 Digital cellular telecommunications system (Phase 2+); Numbering, addressing and identification (3GPP TS 03.03 version 7.8.0 Release 1998)
EG 202 118 Services and Protocols for Advanced Networks (SPAN); The structure of the TETRA numbering resource, interworking and high level policy for administration
TS 131 110 Universal Mobile Telecommunications System (UMTS); Numbering system for telecommunication IC card applications (3GPP TS 31.110 version 4.1.0 Release 4)
EN 301 160 Routeing of calls to European Telephony Numbering Space (ETNS) services
EN 301 161 Management of the European Telephony Numbering Space (ETNS)
TS 101 377-3-3 GEO-Mobile Radio Interface Specifications; Part 3: Network specifications; Sub-part 3: Numbering, Addressing and Identification; GMR-2 03.003
EN 300 523 Digital cellular telecommunications system (Phase 2) (GSM); Numbering, addressing and identification (GSM 03.03 version 4.11.1)
EN 300 927 Digital cellular telecommunications system (Phase 2+) (GSM); Numbering, addressing and identification (GSM 03.03 version 5.4.1 Release 1996)
TS 101 402 Digital cellular telecommunications system (Phase 2+) (GSM); Support of Private Numbering Plan (SPNP); Service description; Stage 1 (GSM 02.95 version 8.0.0 Release 1999)
TR 101 327 Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Guide to numbering options for public networks based on VoIP technology
TS 101 324 Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Numbering; Scenario 1 + Scenario 2
TR 101 617 Network Aspects (NA); Considerations on network mechanisms for charging and revenue accounting for European Telephony Numbering Space (ETNS) services
EN 301 104 Human Factors (HF); Human factors requirements for a European Telephony Numbering Space (ETNS)