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Methods, systems, and computer program products for substitution of card-based telephony bearer channel switch modules in a manner that preserves stable calls

  • US 20060092831A1
  • Filed: 10/31/2005
  • Published: 05/04/2006
  • Est. Priority Date: 11/01/2004
  • Status: Abandoned Application
First Claim
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1. A method for substitution of card-based telephony bearer channel switch modules in a manner that preserves stable calls, the method comprising:

  • (a) designating a first card-based telephony bearer channel switch module of a plurality of card-based telephony bearer channel switch modules as a substitution switch module;

    (b) designating a second card-based telephony bearer channel switch module of the plurality of card-based telephony bearer channel switch modules as an active switch module;

    (c) establishing stable calls using the second card-based telephony bearer-channel switch module;

    (d) at the first card-based telephony bearer channel switch module, obtaining configuration information for the second card-based telephony bearer channel switch module;

    (e) at the first card-based telephony bearer channel switch module, obtaining call state information for stable calls established using the second card-based telephony bearer channel switch module; and

    (f) detecting failure of the second card-based telephony bearer channel switch module, and, in response, switching, using the configuration and call state information, the first card-based telephony bearer-channel switch module to operate as the second card-based telephony bearer channel switch module in a manner that maintains the stable calls.

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