Telecommunications call-processing arrangement

Details Telecommunications call-processing arrangement Telecommunications call-processing arrangement

H - Electricity

04

Q

H04Q 3/545 (2006.01) H04Q 3/00 (2006.01) H04Q 3/47 (2006.01)

Patent

CA 2076361

A call-processing arrangement (200) views a network numbering plan as a language in the mathematical/computer science sense and takes a lexicographic approach to call processing. Numbering plan syntax is defined by data in tree data structures (320, 330), and numbering plan grammar is defined by data in matrix data structures (400, 410). The data structures are used by numbering plan-independent functions to determine the meaning of call-associated digit strings and to specify the treatment (e.g., routing, features,) to be given to the call based on that meaning. A string-identification function (340) applies collected digits to the trees and matrices to find leafs (312) that define digit strings that make up the number. A string-action function (341) uses the definitions in the found leafs to form a call-route-specifying or call-feature-specifying index (254) for the call. A generalized route-selection function (343) uses a set of first call characteristics including the route-or-feature- specifying index to select from multi-dimensional matrices (1200, 1202) either afeature module (205) to be invoked or a routing-pattern number (1201), and in the latter case uses a set of second call characteristics including the routing-pattern number to select a route preference (1701) from routing pattern-preference tables (1300). A digit-sending function (344) uses the route preference to select an entry of digit-sending information (1701) from a sending table (1700) and uses the sending information to establish a call path and to outpulse digits. A digit modification function (343) and a table (1000) of digit modifications are also provided for purposes of number conversion, such as between different network numbering plans when more than one is defined.

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