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Numbering / Addressing in Private Integrated Services Networks (PISN). Background to ECMA. An International Europe-based Industry Association for Standardizing Information and Communication Systems. Objective

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slide2

Background to ECMA

  • An International Europe-based Industry Association
  • for Standardizing Information and Communication Systems
  • Objective
    • Development and promulgation of standards and technical reports for information and communication systems
    • With Direct Outlets on International and European Levels
      • ISO/IEC JTC 1
      • CEN, CENELEC, ETSI

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Joint ECMA-ETSI Agreement and Committee

  • Provides for co-operation between ETSI and ECMA on certain designated topics
  • Avoids duplication of work
  • Mutual participation in working committees
  • ECMA deliverables publishable as ETSI documents through routes such as Public Enquiry

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Standardizing Information

and Communication Systems

TC32

Communication, Networks and Systems Interconnection

Responsibility for corporate networks, including QSIG protocol, mobility support, addressing, numbering, management, CTI etc.

TG13 – Corporate Networks – Network Architecture, Numbering, Naming and Addressing

TG17 - IP-based multimedia communications

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ECMA TC32-TG13

Numbering and Addressing

in Narrowband and Broadband PISNs

ECMA – 155

(ETS 300 189 - ISO/IEC 11571)

  • Handling of network addresses for entities which use
  • or provide telecommunication services offered by PISNs
  • Requirements for :
  • - Numbering
  • coding of numbering information,
  • Support of Private Numbering Plan
  • - Addressing of network service access points
  • - Subaddressing

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Native PISN numbering plans

  • The ISDN numbering plan according to ITU-T Rec. E.164
  • A Private Numbering Plan (PNP)
  • An implicit numbering plan
  • The Data Country Code (DCC) numbering plan (ISO/IEC 8348) (introduced for ATM)
  • The International Code Designator (ICD) numbering plan
    • (ISO/IEC 8348) (introduced for ATM
  • Any combination of these numbering plans

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Private Numbering Plans

  • Defined by the PISN administrator
  • Not globally unique –
  • PNP numbers significant only within
  • the PISN / Corporate Network concerned
  • Digits 0-9 - maximum length as for E.164
  • Can be structured into a maximum of 3 levels:
      • level 2 regional number
      • level 1 regional number
      • local number
  • May be mappable to corresponding E.164numbers,
  • e.g., where DDI is available.

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Implicit numbering plans

  • Defined by the PISN administrator
  • Not globally unique –
  • Implicit numbers significant only within
  • the PISN / Corporate Network concerned
  • Digits themselves indicate significance of number
  • (e.g., through prefix digits)
      • whether public or private
      • whether public number is subscriber, national
      • or international
      • whether private network is local, regional, etc.
  • Digits 0-9 - maximum length can exceed that for E.164
  • because of need to accommodate prefix digits
  • May be mappable to corresponding E.164 numbers,
  • e.g., where DDI is available

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ECMA TC32-TG17

IP-based multimedia communications

  • Officially created in March 1999
  • 3 meetings with :
    • Alcatel, Bosch Telecom, Deutsche Telekom, ECI Telecom, Ericsson, Lucent Technologies, NIST, Nortel Networks, Philips Business Communications, PQM Consultants, Siemens, Unisys
  • Scope: To develop Standards and Technical Reports for
  • IP-based multimedia communications
  • in a business environment

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TG17 - Objectives

  • To identify requirements including architectural, addressing, mobility, service, protocol, interworking, QoS, security and management aspects
  • To adapt, where necessary, existing standards for narrowband and broadband PISNs to the requirements of IP-based multimedia communication in a business environment
  • To develop, where necessary, standards for interoperation of IP-based networks and telecommunication networks
    • consideration to co-existence of IP networks employing H.323 / H.450 or SIP and Private Integrated Services Networks (PISN) employing QSIG
  • To co-ordinate liaison on related matters with ITU-T, ETSI, TIA, IETF, IMTC, ISO/IEC JTC1 in order to promote a worldwide unique set of standards for IP-related multimedia communication in a business environment

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ECMA TC32 RequirementsJ

Numbering / Addressing in CN - Impact on IP telephony

  • Part of a Corporate Network may comprise an IP network that supports telephony (IP telephony)
  • èRequirements
  • nCustomer-premises or VPN scenarios to be considered
  • nAdministrators will want to deploy a uniform numbering plan throughout the Corporate Network (PISN and IP network)
  • nUsers will want number portability between PISN and IP network
  • Need to support PNPs and implicit number plans
  • in the IP network

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For more information

John Elwell, Chairman ECMA TC32

Siemens Communications (International) Limited

[email protected]

Christine Cordonnier, Convenor ECMA TC32-TG13 & TG17

Alcatel Business Systems

[email protected]

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