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Next Generation Networks Australian Communications Industry Forum (ACIF)

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Title: Next Generation Networks Australian Communications Industry Forum (ACIF)


1
Next Generation NetworksAustralian
Communications Industry Forum (ACIF)
  • ITU-T NGN Workshop, July 2003
  • Peter Darling
  • Manager, ACIF NGN Project

2
ACIF NGN Project
  • ACIFs Strategic Plan in early 2001 identified
    need to work on Next Generation Networks
  • Meetings with the Australian regulators (ACA and
    ACCC) and the Industry Association SPAN confirmed
    they had a similar interest.
  • ACCC sponsored an initial consultancy in second
    half of 2001 to raise issues
  • ACIF held an NGN seminar in May 2002 to scope the
    issues
  • Attendees proposed a continuing industry
    conversation on NGN matters.

3
ACIF NGN Project
  • The ACIF Board agreed to support an ACIF NGN
    Project, working through the ACIF NGN Framework
    Options Group (NGN FOG).
  • The aim of the ACIF NGN Project is to help all
    involved discuss issues that cross current
    boundaries, including
  • Internet/telco divisions
  • Regulatory issues (ACA and ACCC)
  • Industry issues (including self-regulation
    requirements)
  • Policy issues
  • An early agreement was that user requirements
    must be the main driver of this work.

4
NGN FOG Work
  • The main task of the NGN FOG has been to assist
    understanding of the transition to next
    generation network equipment. The NGN FOG work
    involves consideration of issues including
  • Technical standards
  • End-user issues
  • End-to-end services
  • Interconnection across networks
  • Regulatory issues (both self-regulation and
    government regulation

5
How Will NGNs Develop
  • ACIF sees a number of options (not mutually
    exclusive)
  • From the existing public Internet
  • From the introduction of enhanced Internet
    Networks for corporate customers
  • From the introduction of new networks using
    packet technology
  • From the upgrading of existing networks using
    packet technology

6
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7
  • The Internet View
  • Interconnected networks will mainly serve to
    provide end-to-end connectivity, carrying packets
    of data end-to-end between smart terminals, and
    establishing end-to-end sessions under terminal
    control as required.
  • Services will be provided by interaction between
    end-user equipment (e.g ICQ/MSN style voice ,
    web access)
  • Legacy carrier-based services will be in decline
  • The Telco View
  • Services will primarily be provided across
    interconnected networks operated by multimedia
    carriers, with a combination of smart and
    dumb terminal equipment working with a smart
    network which would control end-to-end services
    as needed based on user requirements signalled to
    the network
  • Current telephone networks will develop to
    support multimedia, forming the basis of the NGN
  • Much service development and provision will come
    from public network operators, supported by
    end-to-end higher-layer services developed over
    open interfaces

8
Outcomes from ACIF Work 1
  • Next Generation Networkswill be packet based
  • The predominant packet technology will be IP
  • the major role for ATM will be to support IP, not
    as the prime packet medium
  • Next generation networks will have to support a
    full range of services, including real-time
    interactive services
  • The base Internet Protocols are connectionless,
    and do not guarantee secure and timely delivery
    of each packet in a session (or call), especially
    during periods of congestion

9
Outcomes from ACIF Work 2
  • Quality of service requirements may be met by
    ensuring congestion does not occur, by
    over-dimensioning all paths over which packets
    pass.
  • The business cases of current ISPs (the Public
    Internet) do not make this approach likely for
    end-to-end service, particularly over thin
    routes such as those for customer access.
  • The most likely path for the development of NGN
    is from current public telecommunications
    networks (telco networks)

10
Outcomes from ACIF Work 3
  • There is a wide range of techniques to provide
    QoS connections, including
  • Over-dimensioning
  • Providing underlying connections, either
  • Actual separated physical routes, or
  • Virtual circuits
  • Various QoS protocols, both IETF and proprietary
    solutions
  • These techniques cannot yet be reliably operated
    end-to-end, but can (and do) work in current
    networks

11
Outcomes from ACIF Work 4
  • Within a network, NGN type infrastructure may
    be used
  • To an extend an existing network, based on
    operational savings expected from packet
    technologies. (NGN customer access may or may not
    be provided)
  • To provide a new network able to offer telephony,
    interactive multimedia and Internet services
  • To provide managed data networks for corporate
    customers, supporting telephony and data
  • The economic advantages of individual corporate
    networks supporting telephony and data are most
    obvious
  • The common factor is telephony, aka VoIP

12
Outcomes from ACIF Work 5
  • Voice (telephony) is likely to be a major (if not
    the major) service on IP-based networks evolving
    from current telco networks
  • In the medium term, these services are likely to
    have to meet most of the current national
    regulatory requirements for the telephone
    service, including
  • Number allocation
  • Portability
  • Division into local and long distance
  • Many new services may have a telephony component
    e.g. voice video, which could start voice to
    voice and later add multimedia

13
The Importance of Quality of Service
  • The NGN should be able to support real-time
    interactive services, including voice and also
    multi-media services such as two-way video
    communication
  • The NGN will need to provide a continuous Quality
    of Service (QoS) level greater than the QoS
    currently provided from the Internet at times of
    congestion
  • Despite IETF work, there still seems to be no
    clear way of guaranteeing end-to-end Quality of
    Service across networks with current Internet
    implementations.

14
How to Provide Required QoS?
  • Provision of the required QoS level can be done
    in a number of ways-
  • based on proprietary approaches developed by
    network equipment vendors
  • Based on agreed industry standards (primarily
    protocols developed in the IETF),
  • By ensuring that there is no link or router
    congestion at any point in the end-to-end packet
    paths in use during a call (or session), either
    for all links or by choice of selected routes.

15
Interconnection and Interoperation
  • ACIFs view of the current situation
  • Implementation of almost all work in the IETF on
    techniques to provide assured QoS has been
    directed to a single network rather than across
    networks/autonomous systems
  • many different approaches based on IETF protocols
    and proprietary developments are now in service
    in different networks.
  • End-to-end connectivity is not assured, and
    priority standards work is needed.

16
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17
Standards needed urgently
  • For the duration of a session there is a need to
    establish, operate and maintain a call
    (session) across multiple networks, with required
    resources that may vary during the call

18
Policy and Regulatory Implications
  • Policy setting and regulation is not the job of
    standards bodies. However, policies must be set
    based on the technical reality of the services
    and underlying networks that can be supplied
    economically. For this reason the policy makers
    and regulators have had an active involvement in
    the ACIF NGN Project, with a special Policy and
    Regulatory Group.
  • Is any similar approach being carried out
    internationally?
  • How can the ITU help the policy setting process
    nationally, regionally and globally?

19
The General View
  • The techniques to support transport, control and
    management across different networks are still to
    be fully developed, and this work is needed
    urgently.
  • Techniques to support interconnection and
    inter-operation between the advanced packet
    networks now coming into service will not be
    available for some time.
  • This is an essential part of the Broadband
    Future

20
Network Evolution
  • As you would expect. There were different views
    as to how networks would evolve.
  • Two boundary views were considered, with the
    feeling that the actual evolution would rest
    between these two.
  • (Many of the participants in the ACIF work
    believe the Telco approach will predominate,
    but this may be because of our background in the
    PSTN world!)

21
The Internet view
  • Interconnected networks will mainly serve to
    provide end-to-end connectivity, carrying packets
    of data end-to-end between smart terminals, and
    establishing end-to-end sessions under terminal
    control as required.
  • Services will be provided by interaction between
    end-user equipment (e.g ICQ/MSN style voice ,
    web access) in quasi-private mode.
  • Legacy carrier-based services will be in decline

22
The Telco view
  • Services will primarily be provided across
    interconnected networks operated by multimedia
    carriers, with a combination of smart and
    dumb terminal equipment working with a smart
    network which would control end-to-end services
    as needed based on user requirements signalled to
    the network.
  • Current telephone networks will develop to
    support multimedia, forming the basis of the NGN.
  • Much service development and provision will come
    from public network operators, supported by
    end-to-end higher-layer services developed over
    open interfaces.

23
Interworking, Inter-operability and Any-to-Any
Connectivity
  • If the Internet View is the predominant
    approach, end-to-end connectivity will depend on
    the ability of the terminal equipment to work
    together. The IT world has shown this will not be
    assured, and it is likely that proprietary
    solutions will compete and any-to-any
    connectivity could be lost. Interworking to the
    PSTN should be relatively easy to achieve, but
    access from the PSTN to the new network is likely
    to be harder.
  • The ability of the ITU and its partners to set
    standards for future networks of this type will
    be limited.

24
Interworking, Inter-operability and Any-to-Any
Connectivity
  • If the Telco View is the predominant approach,
    end-to-end connectivity will depend on the
    architecture(s) for the new networks, and the
    interworking arrangements set in place.
  • The role of the ITU and its partners in
    establishing this standards framework will be of
    major importance (and is the basis for much
    current work which will have been described in
    this Workshop).

25
Numbering, Naming and Addressing
  • Future networks are likely to be based on
    Internet Protocols. If the Telco View evolution
    path is followed, we see that considerable work
    is needed on numbering naming and addressing as
    part of interworking arrangements across networks
    for similar services.

26
  • A call from one telephony terminal to another on
    the NGN is also likely to be made by the user
    dialling the E.164 number of the wanted terminal.
    How is this to be routed?

27
Further Work Needed
  • We believe work is needed at the international,
    regional and national level on interworking and
    associated numbering, naming and addressing,
    taking into account
  • The current E.164 numbering arrangements
  • Current requirements for services such as number
    portability, and the techniques used to implement
    them
  • The need to be able to route calls to provide
    maximum functionality (for example, for NGN to
    NGN calls to remain within the NGN)
  • Available tools such as the IETF ENUM protocol
    (already specified for use in the 3GPPs)

28
Policy and Regulatory Implications
  • Policy setting and regulation is not the job of
    standards bodies. However, policies must be set
    based on the technical reality of the services
    and underlying networks that can be supplied
    economically. For this reason the policy makers
    and regulators have had an active involvement in
    the ACIF NGN Project, with a special Policy and
    Regulatory Group.
  • Is any similar approach being carried out
    internationally?
  • How can the ITU help the policy setting process
    nationally, regionally and globally?
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