Abstract

AbstractThe BIDS system will go on trial in early 1990 and it will be a unique system for combining broadband, telephony and data services. The present design uses analogue and digital transmission techniques, but a design for a completely digital system may be required. A study of future requirements had to be undertaken to ensure that the system would adequately serve the customer of the year 2000 and onwards. A design for a digital secondary link is presented employing a modular optical dual‐wavelength diplex system.

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