Services a perspective on building applications

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Services a perspective on building applications
ITU Workshop on IP Networking and Mediacom
2004 Joint Session 1 Multimedia service
evolution

• Richard Swale
• ETSI TIPHON Wg1 chair
• VoIP Technologist
• BTexaCT

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Agenda

• Evolution of IP services beyond voice
• The heterogeneous network environment
• Some views on how services are developed
• Services and Service Capabilities
• Conclusions

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Beyond Voice over IP

• IP
• Emerged as the de facto network convergence layer
  of choice its on the desktop.
• Can support a wide range of applications
  including real-time but at present this is
  largely only best effort real-time
• Provides an opportunity to look at public network
  services afresh.
• Voice over IP
• A term which describes a wide range of technical
  solutions.
• Available at varying levels of maturity.
• Is not a service!
• BUT
• IP is largely media neutral and can support
  video as well as voice applications. QoS is an
  issue though!

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Evolution and Revolution

• New services are being targeted on IP
• 3GPP release 5
• BUT mass market customers buy applications they
  dont buy technology
• Existing services migrating to IP based platforms
• IPCableCom
• Existing platforms are unlikely to be replaced
  overnight
• Performance, reliability, availability,
  integrity, security, accounting are all issues in
  the IP space.
• A heterogeneous public network infrastructure is
  likely to exist for some time to come.
• Best efforts IP networks may be complemented by
  QoS capable IP networks which also provide best
  effort services.

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The heterogeneous network environment
Possible point of interest for inter-working and
inter-connect
Apps
Fixed IP NW
IP Network
IP Network
3G
GW
3G
2G
2G
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Views on current service development

• The Switched Circuit world
• Network features are standardised as services.
• Service descriptions are mapped onto a specific
  network technology (e.g. ISDN, GSM etc.) and
  specified by standards bodies.
• This takes a long time and is never complete due
  needing to address feature interaction, an
  absence of regression compliance.
• OR
• Edge of network platforms are created to combine
  network based functions into new customised
  applications.
• IN network features are used to create new
  applications.
• In both cases the network features constrain what
  can be achieved.

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Views on current service development

• The IP network world
• Network features are enabled though standardised
  protocols.
• Services in IP networks are really network
  functions.
• Applications are built using any number of
  protocols integrated together outside of the
  specification development process.
• Process is highly dynamic and specific protocols
  emerge and fade.

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Services and Applications

• Focus on reusable components and flexible
  construction to fuel innovation rather than
  procedural bit-wise definition of services.

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Application Construction
A design-time view...
Service Applications
Service Application Layer
Registration Capability
Service Abstraction Layer
Service Capabilities
Routing Capability
Connection Control Capability

• More information
• http//docbox.etsi.org/tech-org/tiphon/Document/ti
  phon/07-drafts/wg1/DTR01008/

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Conclusions

• Key issues to consider
• Enabling innovation in a controlled manner such
  that accepted social practises (e.g. privacy
  etc.) are preserved.
• Opportunities
• Enabling new network technologies to be adopted.
• Enabling innovation in network services.
• Challenges
• How to address the key issues such that the
  opportunities can be realised.