Methods, systems, and computer program products for substitution of card-based telephony bearer channel switch modules in a manner that preserves stable calls
First Claim
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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Accused Products
Abstract
Methods, systems, and computer program products for substitution of card-based telephony bearer channel switch modules in a manner that preserves stable calls are disclosed. According to one method, a first card-based telephony bearer channel switch module of a plurality of card-based telephony bearer channel switch modules is designated as a substitution switch module. A second card-based telephony bearer channel switch module of the plurality of card-based telephony bearer channel switch module is designated as an active switch module. Stable calls are established using the second card-based telephony bearer channel switch module. Configuration information for the second card-based telephony bearer channel switch module is communicated to the first card-based telephony bearer channel switch module. Call state information for calls involving the second card-based telephony bearer channel switch module is obtained from the first card-based telephony bearer channel switch modules. In response to detecting failure of the active switch module, the first card-based telephony bearer channel switch module is switched, using the configuration and call state information, to operate as the second card-based telephony bearer channel switch module in a manner that maintains the stable calls.
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Citations
38 Claims
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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:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for substitution of card-based telephony channel switch modules in a manner that preserves stable calls, the system comprising:
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(a) a first card-based telephony bearer channel switch module for operating as substitution switch module; and
(b) a second card-based telephony bearer channel switch module for operating as an active switch module, wherein the first card-based telephony bearer channel switch module is adapted to obtain configuration and call state information for stable calls maintained by the second card-based telephony bearer channel switch module for calls involving the second card-based telephony bearer channel switch module and wherein, in response to failure of the second card-based telephony bearer channel module, the first card-based telephony bearer channel switch module is adapted to switch, using the configuration information and the call state information, to operate as the second card-based telephony bearer channel switch module in a manner that preserves the stable calls. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for substitution of card-based bearer channel switch modules, the system comprising:
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(a) an active card-based telephony bearer channel switch module for performing switching operations for telephone calls; and
(b) a substitution card-based telephony bearer channel switch module for obtaining configuration and state information from the active telephony bearer channel switch module, and, in response to failure of the active telephony bearer channel switch module, for switching to operate as the active telephony bearer channel switch module in a manner that preserves stable calls maintained by the active card-based telephony bearer channel switch module. - View Dependent Claims (23, 24, 25, 26)
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27. A computer program product comprising computer-executable instructions embodied in a computer-readable medium for performing steps comprising:
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(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. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification