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Method and apparatus for fast V.90 modem startup

  • US 7,277,531 B2
  • Filed: 08/16/2005
  • Issued: 10/02/2007
  • Est. Priority Date: 04/12/1999
  • Status: Expired
First Claim
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1. A training method for use by a first modem to reduce a training time for training said first modem with a second modem, said training time including a capabilities exchange phase time, a probing phase time, an impairment learning phase time and a constellation phase time, where said first modem is capable of training with said second modem over a communication channel in accordance with the V.90 modem protocol including the V.8bis capabilities exchange phase, said training method comprising the steps of:

  • receiving a call from said second modem to establish said communication channel;

    initiating, in response to said call, a modified V.8bis capabilities exchange phase of the V.90 modem protocol, wherein said modified V.8bis capabilities exchange phase of the V.90 modem protocol is indicative of a fast connect capability;

    receiving a fast connect capability identifier from said second modem in response to said fast connect capability; and

    skipping at least a portion of the V.8bis capabilities exchange phase of the V.90 modem protocol to reduce said capabilities exchange phase time, said skipping step being performed in response to said receiving said fast connect capability identifier.

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