PPT – PROGRESS ON NGN IMPLEMENTATION EXAMPLES PowerPoint presentation | free to download - id: 274c79-ZDM3O


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation



Two end offices (42,000 lines in total) were cut over with high QoS in two consecutive days. ... text and data into one seamless communications environment, ... – PowerPoint PPT presentation

Number of Views:109
Avg rating:3.0/5.0
Slides: 27
Provided by: natasa8


Write a Comment
User Comments (0)
Transcript and Presenter's Notes


  • Prof. dr Nataa Gospic,
  • University Belgrade

Regional Workshop on Assistance to the Arab
Region for the implementation of Next Generation
Networks (NGN)   Cairo (Egypt), 15-16 December
  • The presentation provides examples of progress in
    deploying the NGNs technologies and taking
    advantage of the cost savings and service
    opportunities in order to assist developing
    counties to choose their own way

Example of NGN progress
  • Delivering the future - BTs 21st Century
  • Software driven network with new, simpler
    portfolio of NGN services
  • Platform for innovation to put flexibility and
    choice in the hands of customers
  • Being deployed in UK
  • BT serves markets in 172 countries maximum
    consistency globally

BT 21 CN
  • BT 21 CN
  • Advanced network based on intelligent systems
    using key technologies
  • IP is key as common transport protocol for all
    types of communication and applications
  • SIP allows service provider to control the
    communications activity to meet a customers
  • MPLS enables the efficient designation and
    routing of BB IP traffic flows
  • IP Multi-media Sub-system (IMS) to support
    innovative services
  • Also SDH, Virtual LAN, WDM
  • With the migration of its network to NGN (21
    Century Network), BT expects savings in operating
    expenses of 1bn (about 1.5bn ) starting
    2008/09. The expected investment amounts to 10bn
    (about 15bn ) (KIRSCH, HIRSCHHAUSEN, 2008).

France Telecom Evolutionary Strategy
Source France Telecom
KPN, Netherlands
  • IMS is central to plans once in place, will
    deploy fixed and mobile IP-based services,
    starting with simple voice services and moving to
    VoIP-based IP Centrex, wireless virtual PBX and
    messaging services
  • Issues regulatory confusion
  • How are VoIP calls classified and charged for? Is
    it voice, or is it data?
  • Net neutrality and IP interconnect who gets paid
    for what when an incumbent shares its network
    with 3rd party service providers?

  • KPN estimated that the network would require an
    additional 1.5 billion in capex. KPN focused on
    building an all-IP backbone first and then an
    all-IP access network on top of this. The
    backbone is now largely completed and the access
    network underway. KPN has revised its capex spend
    for the transformation to 0.9 billion.
  • expects a reduction in operating costs of 850
    million up to 2009 while the total capital
    expenses for the migration are estimated to be
    0.9 billion. The extension of fiber to the
    street cabinets renders the MDFs obsolete. About
    200 of the 1,391 MDF locations will remain in
    operation as interconnection points to the
    backbone (HENDRIKS, 2007, OPTA, 2006b). KPN
    expects an additional revenue of 1 billion from
    sales of the MDF real estate (KIRSCH,
    HIRSCHHAUSEN, 2008).

Approach to IMS implementation
Source Operators sites
Shenzhen Telecom
  • Shenzhen NGN commercial pilot network represents
    the largest achievement in bringing about the
    evolution of PSTN from its current state, to that
    of NGN. In this network, the softswitch acts as
    the control center, the SHLR acts as the data
    center, and the ENIP acts as the unified service
    platform. The overall capacity of the entire
    network reaches up to 600,000 lines/300,000
    trunks, with 150,000 actual subscribers accessed
    through AGs. Some of the reasons to be proud
    would include the following 
  • It greatly improves network performance. 
  • At present, it gives birth to the largest NGN end
    office (33,000 lines). 
  • It breaks Shenzhen Telecoms current record of
    PSTN end office cutover efficiency. Two end
    offices (42,000 lines in total) were cut over
    with high QoS in two consecutive days. From
    equipment installation to operation after
    cutover, it takes less than 20 days. 
  • It boasts the largest commercial IP Centrex group
    in the world. Only, RBT, UC, and Real-Time
    multimedia services exhibit similar vitality. 
  • As an intelligence platform, it provides new
    intelligent phone call services and other
    value-added services for its three million AND
    subscribers in the network.
  • THE PROJECT STARTED IN 2002 by China Telecom and
    finished in 2005. (Huawei Service, Multimedia
    library, Issue 20, 2005).

NGN DEPLOYMENT (Shenzhen Telecom)
  • On September 18, 2004 the first NGN end office
    was established in Fuyong. Some 15,000
    subscribers from the original TDM switch were
    transferred to the NGN network in a matter of
    minutes. Although the cutover lasted less than 10
    minutes, it was a historical moment in the
    development of the China telecommunications
    network, because it marked the first time that
    NGN was able to replace the TDM end offices in
    the PSTN
  • Three more end offices (the Boling office -
    16,400 lines, Nanyou office - 26,000 lines, and
    Huangmugang office - 33,000 lines) were cutover
    within half a year.
  • The cutover of these four offices were quick and
    orderly, and perhaps are best exemplified by the
    idea -- "from suburb to downtown"and "from small
    to large".
  • By April 2005, Shenzhen Telecom successfully
    established a commercial NGN that accommodates
    more than 150,000 subscribers

Results (Shenzhen Telecom)
  • While rebuilding the end office, the idea of NGN
    to separate call control from media bearer was
    brought into actual play.
  • For the first time, high-capacity AGs were put
    into the original TDM switch room. As a result,
    subscribers under the original TDM switch were
    successfully transferred to the AGs within a
    matter of minutes.
  • Furthermore, the AGs inherited all the access
    modes of the traditional TDM network such as
    ordinary subscriber line, long-distance
    subscriber line, polarity reversal subscriber
    line, ISDN subscriber line, analog PBX trunk,
    digital PBX trunk, and V5 trunk.
  • Also, the end users were shielded so that they
    were not aware of any changes in the core
    network. As for operation and maintenance, the
    distributed client mode was adopted in order to
    retain the original maintenance habit.

EFFECTS (Shenzhen Telecom)
  • Schenzhen Telecom
  • Improved network operation quality Operation
    records from the four NGN end offices of Shenzhen
    Telecom are convincing proof of an improved
    network operation quality. For instance, the
    33,000-line Huangmugang office (the NGN end
    office with the largest capacity) serves as a
    good example. The operation indices from the NGN
    end office are much better than those of the
    original office, and the call completion rate
    showed an increase of 12. Even with an increase
    in traffic, the softswitch system continued to
    run stably and the indices were much improved. 
  • Lower maintenance cost After the original end
    office was converted into an NGN end office,
    indices like integrity, occupied space, and power
    consumption of the NGN equipment proved to be
    superior to those of the original TDM switch.
    After rebuilding, the occupied space was reduced
    by 40, and power consumption by 63. Hence, in a
    large-scale NGN, the maintenance cost will
    obviously be much lower. With its innate
    advantages in services like, IP Centrex and video
    services, NGN will quickly become the first
    choice in the rebuilding of the TDM network. 
    (Huawei Service, Multimedia library, Issue 20,

  • China Netcom's Beijing Branch (Beijing Netcom) -
    April 2007
  • First commercial IMS network in China
  • Includes IP-Centrex solution
  • IMS multimedia telephony system provides
    value-added services with the main focus on
    IP-Centrex targeting enterprise customers

Beijing Netcom IP Centrex
  • Beijing Netcom
  • To provide telecom-quality cost-efficient IP
    multimedia services addressing the needs of
    high-end enterprise users in Beijing area now and
    in the future.
  • Supports introduction of new multimedia services
    (voice, data, audio, video) to enhance user
    experience in Beijing area, including visitors
    and participants in the 2008 Olympic Games

  • Korea can serve as a good example for developing
    countries in whole or in part in this arena as it
    is in the midst of migrating to its own next
    generation network referred to as BcN or
    Broadband Convergence Network.
  • The key drivers of deploying NGN

KOREA DEVELOPMENT (P\STG\4StudyPeriod\SG2\200\20
09\0277E.doc 09/11/2009 26.08.2009
Source National Information Society Agency (NIA)

  • The BcN Roadmap shows the different phases in the
    different networks that incorporate the whole
  • From 2004 and 2005, four consortiums were formed
    (made up of major telecom companies and local
    cable companies who all had a stake in nurturing
    the market) and first set up pilot projects/test
    beds in order to test potential applications and
    business models of convergence services including
    video phones, IPTV, VoIP, wireless sensor
    networking, etc.

A public-private-partnership (PPP) model has been
activated in the implementation of the BcN. This
basically means the private sector builds and
commercializes networks and services, whereas the
government arranges laws, polices and the
necessary standardization conditions for new
Source National Information Society Agency (NIA)

  • Telefónica SA, Spain
  • Mobile Attendant service provides personalised,
    reliable, easy-to-use advanced communications
    experience across wireless and wireline networks
  • Integrates voice, video, text and data into one
    seamless communications environment, part of
    Telefónica's vision linking fixed and mobile
    networks together to deliver a converged
    communications experience

Telefónica SA, Spain
  • PC software manages calls running on GSM or 3G
    phones via a simple graphical interface to
    handle, e.g., simultaneous calls, transfers,
    multi-party conferencing
  • Can simultaneously run multimedia sessions from
    PC including presence and reachability messaging
  • Future add a Personal Assistant with
    capabilities to enhance productivity for
    field-based and highly mobile personnel

Batelco - Bahrain
  • 176,000 lines migrated to NGN
  • Anticipated would require gt5 years to implement
    but went considerably faster
  • Migration didnt disrupt normal service
  • Now customers can connect to Batelco BB internet
    same day vs. one week
  • NGN delivers on promise to bring affordable BB
    access to all households making Bahrain among the
    best connected in the world

Example Small operator from developing
country -Telekom Srpske, BH-
  • New services are based on the NGN and IMS
  • Strategy
  • parallel existance of TDM and NGN network till
    full migration to NGN (Year 2012.)
  • 75.000 PSTN users are migrated to Softswitch
    using MSAN platform - preserving all PSTN
    services (the end of the 2008).
  • Solutions consisting of IMS Core elements and
  • NGN Techno-Economic Aspects
  • Investment protection
  • Costs reduction (capital and operational)
  • Carrier grade reliability
  • Scalability
  • Improved product selection
  • Increase usage of the existing network
  • Speed of innovation and introduction of services

Telekom Srpske First step towards NGN

Telecom Srpske Next Steps in migration to NGN
  • Full migration of PSTN users from TDM to NGN
    using MSAN and Softswitch platform (2012.)
  • Offering new services Video Call, Video
    Conference, Unified Messaging, Presence and
    Instant Messaging etc.
  • Interconnection with the international VoIP
  • FMC - Fixed Mobile Convergence

  • Every countrys situation is different with their
    own distinct unique market and environmental
  • Costs and financial support are vital and can not
    be ignored
  • Public-private partnership
  • Local initiatives
  • Developing countries should be encourage to take
    a part in international effort to develop best
    migration path to NGN

  • Prof. dr Natasa Gospic
  • University Belgrade
  • Tel 381 11 3091310
  • Email

15-16 December 2009
Regional Workshop on NGN Cairo, Egypt