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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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Numbering addressing in private integrated services networks pisn l.jpg

Numbering / AddressinginPrivate Integrated Services Networks(PISN)

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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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    John Elwell, Chairman ECMA TC32

    Siemens Communications (International) Limited

    john.elwell@siemenscomms.co.uk

    Christine Cordonnier, Convenor ECMA TC32-TG13 & TG17

    Alcatel Business Systems

    cc@sxb.bsf.alcatel.fr

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