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Digital access arrangement circuitry and method having current ramping control of the hookswitch

  • US 6,823,066 B1
  • Filed: 07/02/1999
  • Issued: 11/23/2004
  • Est. Priority Date: 04/22/1997
  • Status: Expired due to Fees
First Claim
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1. A communication system, comprising:

  • phone line side circuitry that is capable of being coupled to phone lines;

    powered side circuitry that is capable of being coupled to the phone line side circuitry through an isolation barrier;

    a hookswitch transition node carrying a hookswitch transition signal indicative of a desire to change a hookswitch within the phone line side circuitry from an off-hook state to an on-hook state; and

    current control circuitry coupled to the hookswitch transition node within the phone line side circuitry, the current control circuitry operating prior to the completion of a hoolswitch transition to enable a decrease in a current level drawn from the phone line in response to the hookswitch transistion signal.

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