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Services – a perspective on building applications

ITU Workshop on IP Networking and Mediacom 2004 Joint Session 1 – Multimedia service evolution. Services – a perspective on building applications. Richard Swale ETSI TIPHON Wg1 chair VoIP Technologist BTexaCT. Agenda. Evolution of IP services beyond voice

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Services – a perspective on building applications

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  1. ITU Workshop on IP Networking and Mediacom 2004 Joint Session 1 – Multimedia service evolution Services– a perspective on building applications Richard Swale ETSI TIPHON Wg1 chair VoIP Technologist BTexaCT

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

  3. 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!]

  4. Evolution and Revolution • New services are being targeted on IP • 3GPP release 5+ • BUT mass market customers buy applications they don’t 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.

  5. 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

  6. 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.

  7. 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.

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

  9. Application Construction A design-time view... • More information: • http://docbox.etsi.org/tech-org/tiphon/Document/tiphon/07-drafts/wg1/DTR01008/ Service Applications Service Application Layer Registration Capability Service Abstraction Layer Service Capabilities Routing Capability Connection Control Capability

  10. 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.

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