Patent ID: 6097802
Filing Date: 2000-08-01
Classification: H04M,H04Q

Abstract:
A method for routing an originating call to a subscriber location within a local communication network, said network comprising a two-way communication network interconnecting a plurality of service switching points and a plurality of dispersed network locations, said service switching points selectively establishing a communication connection between at least two of said network locations in response to a local call request from a calling party initiated by inputting a telephone number, said network locations including a plurality of subscriber locations, and an integrated service control point comprising a service control point comprising subscriber service logic, said method comprising:identifying a subscriber's service at a service switching point serving the input telephone number based on the local call request from the calling party to establish a communication connection with the subscriber;ascertaining a geographic location of the calling party in accordance with the originating telephone number of the calling party; anddetermining, within the integrated service control point, which of the plurality of subscriber locations is closest to the geographic location of the calling party, the determining including comparing the ascertained geographic location with a predefined list of geographic areas corresponding to post office zip code+4 designations and comprising a predefined subscriber service area, each subscriber service area being associated with a routing telephone number corresponding to one of the plurality of subscriber locations, the comparing comprising comparing the ascertained geographic location to the zip code+4 designation of each listed geographic area, wherein if no matches are found comparing the ascertained geographic location to the zip code+3 designation of each listed geographic area, wherein if no matches are found, comparing the ascertained geographic location to the zip code+2 designation of each listed geographic area, wherein if no matches are found, comparing the ascertained geographic location to the zip code+1 designation of each listed geographic area, wherein if no matches are found, comparing the ascertained geographic location to the zip code+0 designation of each listed geographic area, and wherein if no matches are found, the call request is forwarded to a predetermined default routing telephone numberwherein, if a match is found the call request is forwarded to the associated routing telephone number.