IP-Telecoms Interworking Workshop Geneva 25-27 January 2000 Page -1 Numbering / Addressing in Private Integrated Services Networks (PISN)

IP-Telecoms Interworking WorkshopGeneva 25-27 January 2000

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Numbering / Addressingin

Private Integrated Services Networks

(PISN)


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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

Background to ECMA


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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

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

TG17 - IP-based multimedia communications

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


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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.164 numbers,

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 Requirements

Numbering / Addressing in CN - Impact on IP telephony

Part of a Corporate Network may comprise an IP network that supports telephony (IP telephony)

Requirements

Customer-premises or VPN scenarios to be considered

Administrators will want to deploy a uniform numbering plan throughout the Corporate Network (PISN and IP network)

Users 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

www.ecma.ch [email protected]

John Elwell, Chairman ECMA TC32Siemens Communications (International) Limited

[email protected]

Christine Cordonnier, Convenor ECMA TC32-TG13 & TG17Alcatel Business Systems

[email protected]

Documents

IP-Telecoms Interworking Workshop Geneva 25-27 January 2000 Page -1 Numbering / Addressing in Private Integrated Services Networks (PISN)