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The Analog Termination

  • John C. McDonald
Part of the Applications of Communications Theory book series (ACTH)

Abstract

Public and private networks will evolve into all-digital facilities, and one day the analog interface will be exclusively located on the customer’s premises. Until that time, we will continue to live in a world that is a mixture of analog and digital. A new digital switch must have suitable analog terminations that are directly compatible with the existing analog telephone plant. In public applications, the digital switch cannot exclusively require digital telephones because customers often own their own instruments, which are analog. In any case, it would be very difficult and costly to introduce a new type of telephone at the time of a large switching system cutover. In private network applications, there is more flexibility in introducing digital telephones. However, the private digital switch usually will have suitable analog terminations for trunks.

Keywords

Analog Termination Vocal Tract Code Word Switching System Pulse Code Modulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • John C. McDonald
    • 1
  1. 1.Contel CorporationNew YorkUSA

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