QoS for applications


Neither the ISDN nor the subsequent broadband-ISDN (B-ISDN) delivered on the promise of being a network for all services. Now that mantle has been passed to IP networks born out of computer-to-computer communications. But their benefits, such as great flexibility of bit rate and resilience, are accompanied by other characteristics which are alien not only to traditional telephony but also to many of the multimedia services which telcos are now seeking to offer their customers. As part of the adaptation of IP networks to carry the widest range of services and applications, the concept of quality of service has been invoked. This paper looks at the performance characteristics which various applications require. It also describes techniques they can incorporate to reach a satisfactory overall result in combination with the network.

This is a preview of subscription content, access via your institution.


  1. 1

    Pelt M, Trappeniers L, Vanparijs F and Moons J: ‘AmigoTV: a medianet application’, Proc Eur Workshop on the Integration of Knowledge, Semantics and Digital Media Technology, London (November 2004).

  2. 2

    TiVo Inc — http://www.tivo.com/

  3. 3

    ITU-T Recommendation Y.1540: ‘Internet protocol data communication service — IP packet transfer and availability performance parameters’, (December 2002).

  4. 4

    IETF RFC3393: ‘IP packet delay variation metric for IP performance metrics (IPPM)’, (November 2002).

  5. 5

    ISO/IEC 13818-2:2000: ‘Information technology — Generic coding of moving pictures and associated audio information: Video’, (2000).

  6. 6

    ITU-T Recommendation H.261: ‘Video codec for audiovisual services at p x 64 kbit/s’, (March 1993).

  7. 7

    ISO/IEC 11172-2:1993: ‘Information technology — Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbit/s — Part 2: Video’, (1993).

  8. 8

    ITU-T Recommendation H.263: ‘Video coding for low bit rate communication’, (January 2005).

  9. 9

    ISO/IEC 14496-2:2004: ‘Information technology — Coding of audio-visual objects — Part 2: Visual’, (2004).

  10. 10

    ITU-T Recommendation H.264: ‘Advanced video coding for generic audiovisual services’, (March 2005).

  11. 11

    ISO/IEC 14496-10:2004: ‘Information technology — Coding of audio-visual objects — Part 10: Advanced video coding’, (2004).

  12. 12

    Morrison G: ‘Video transcoders with low delay’, IEICE Trans. Commun, E80-B, pp 963–969 (June 1997).

    Google Scholar 

  13. 13

    Ghanbari M and Pearson D E: ‘Variable bit rate transmission of television signals’, IEE Electronics Letts, 24, No7, pp 392–393 (1988).

    Google Scholar 

  14. 14

    Morrison D G: ‘Variable bit rate video coding for asynchronous transfer mode networks’, BT Technol J, 8, No3, pp 70–80 (July 1990).

    Google Scholar 

  15. 15

    ITU-T Recommendation J.82: ‘Transport of MPEG-2 constant bit rate television signals in B-ISDN’, (July 1996).

  16. 16

    Hunt G and Arden P: ‘QoS requirements for a voice-over-IP PSTN’, BT Technol J, 23, No2, pp 37–47 (April 2005).

    Google Scholar 

  17. 17

    ITU-T Recommendation G.723.1: ‘Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s’, (March 1996).

  18. 18

    ITU-T Recommendation G.729: ‘Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP)’, (March 1996).

  19. 19

    ISO/IEC 10918-1:1994: ‘Information technology — digital compression and coding of continuous-tone still images: requirements and guidelines’, (1994).

  20. 20

    ISO/IEC 15444-1:2004: ‘Information technology — JPEG 2000 image coding system: Core coding system’, (2004).

  21. 21

    Euro1080 — http://www.euro1080.tv/

  22. 22

    McCreary S and Claffy K: ‘Trends in wide area IP traffic patterns: a view from Ames Internet Exchange’, Proc 13th ITC Specialist Seminar on Measurement and Modeling of IP Traffic, pp 1–11 (September 2000).

  23. 23

    Feng W C, Chang C, Feng W-C and Walpole J: ‘Provisioning on-line games: a traffic analysis of a busy counter-strike server’, Proc. 2nd ACM SIGCOMM Workshop on Internet measurement, Marseille, France (November 2002).

  24. 24

    Walker M D, Nilsson M, Jebb T and Turnbull R: ‘Mobile video-streaming’, BT Technol J, 21, No3, pp 192–202 (July 2003).

    Article  Google Scholar 

  25. 25

    BBC Radio — http://www.bbc.co.uk/radio/

Download references


About this article

Cite this article

Morrison, G. QoS for applications. BT Technol J 23, 28–36 (2005). https://doi.org/10.1007/s10550-005-0004-7

Download citation


  • Information System
  • Communication Network
  • User Interface
  • Performance Characteristic
  • Multimedia Information