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Internet Phone — Changing the Telephony Paradigm?

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The Internet and Beyond

Part of the book series: BT Telecommunications Series ((BTTS,volume 15))

Abstract

Audio transport over packet-switched (as apart from time division multiplexed) digital networks was tried at least as early as 1970 at NPL [1]. The NPL system used delta/sigma modulation and the transmit and receive clocks were derived from the 60 kHz long-wave standard frequency transmission. Because of the substantial buffers in the system the link could be broken for several seconds without data loss (the output data was played at high speed until the backlog was cleared).

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References

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Authors
  1. R. Babbage
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  2. I. Moffat
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  3. A. O’Neill
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  4. S. Sivaraj
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Editor information

Editors and Affiliations

  1. British Telecommunications Research Laboratories, UK

    S. Sim  & J. Davies  & 

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© 1998 Springer Science+Business Media Dordrecht

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Babbage, R., Moffat, I., O’Neill, A., Sivaraj, S. (1998). Internet Phone — Changing the Telephony Paradigm?. In: Sim, S., Davies, J. (eds) The Internet and Beyond. BT Telecommunications Series, vol 15. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4918-1_14

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  • DOI: https://doi.org/10.1007/978-94-011-4918-1_14

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-6062-2

  • Online ISBN: 978-94-011-4918-1

  • eBook Packages: Springer Book Archive

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