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System for measuring and automatically compensating for the distorsions of a connection between a telephone apparatus and a central voice processing unit

  • US 4,847,885 A
  • Filed: 07/08/1988
  • Issued: 07/11/1989
  • Est. Priority Date: 07/10/1987
  • Status: Expired due to Term
First Claim
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1. A system for measuring and automatically compensating for the distortions of a connection between a telephone apparatus (12) and a central voice processing unit (14) for a telephone network comprising at least one telephone line (11), characterised in that the central unit (14) comprises measuring means (16) which are activatable after a telephone connection has been established on the said line (11), for measuring the distortion introduced in the transmission by the telephone line, and compensation means (30, 34) controlled by the measuring means (16) for compensating for the distortion.

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