Method for routing a call

Details Method for routing a call Method for routing a call

1996-08-08

1998-08-18

Zele, Krista

Telephonic communications

Plural exchange network or interconnection

With interexchange network routing

379207, 379211, H04M 342

Patent

active

057968136

ABSTRACT:
A method for enabling a plurality of Local Service Providers within a common Numbering Plan Area (NPA) to serve Subscribers of the plurality of Local Service Providers. The method includes the step of assigning to each Subscriber of a Local Service Provider within the common NPA a unique three digit code, hereinafter referred to as a SPA code. The service provider area (SPA) code is used by the telephone system in the same manner presently used for routing calls made when a calling Subscriber dials the NPA code of the called party. Here, however, the SPA code is not dialed by the calling Subscriber. The dialed directory number, NXX-XXXX, of a called Subscriber subscribed to a different Local Service Provider, is sent to a database. The database maintains a record of the relationships between the directory numbers of Subscribers and the SPA codes of the Subscribers. The database retrieves the SPA code associated with the dialed directory number presently serving the called Subscriber. The call is routed as SPA-NXX-XXXX. Because the ten digit format, SPA-NXX-XXXX, is the same as the present NPA-NXX-XXXX, ten digit format, existing signaling and routing mechanisms may be used to route the call. Thus, each one of the Subscribers of each one of the plurality of Local Service Providers is assigned a common SPA code, each one of the Local Service Providers having a different SPA code.

REFERENCES:
patent: 4162377 (1979-07-01), Mearns
patent: 4191860 (1980-03-01), Weber
patent: 4555594 (1985-11-01), Friedes et al.
patent: 4565903 (1986-01-01), Riley
patent: 4754479 (1988-06-01), Bicknell et al.
patent: 4866763 (1989-09-01), Cooper et al.
patent: 5023868 (1991-06-01), Davidson et al.
patent: 5033079 (1991-07-01), Catron et al.
patent: 5142654 (1992-08-01), Sonberg et al.
patent: 5206901 (1993-04-01), Harlow et al.
patent: 5222125 (1993-06-01), Creswell et al.
patent: 5237604 (1993-08-01), Ryan
patent: 5243645 (1993-09-01), Bissell et al.
patent: 5259026 (1993-11-01), Johnson
patent: 5270701 (1993-12-01), Ito et al.
patent: 5329578 (1994-07-01), Brennan et al.
patent: 5333184 (1994-07-01), Doherty et al.
patent: 5333185 (1994-07-01), Burke et al.
patent: 5375167 (1994-12-01), Bales et al.
patent: 5386467 (1995-01-01), Ahmad
patent: 5416833 (1995-05-01), Harper et al.
patent: 5440614 (1995-08-01), Sonberg et al.
patent: 5452351 (1995-09-01), Yamamoto
patent: 5473681 (1995-12-01), Partridge, III
patent: 5475749 (1995-12-01), Akinpelu et al.
patent: 5481603 (1996-01-01), Gutierrez et al.
patent: 5491742 (1996-02-01), Harper et al.
patent: 5509058 (1996-04-01), Sestak et al.
patent: 5515427 (1996-05-01), Carlsen et al.
patent: 5550910 (1996-08-01), DeJager
patent: 5550912 (1996-08-01), Akinpelu et al.
patent: 5559877 (1996-09-01), Ash et al.
patent: 5598464 (1997-01-01), Hess et al.
patent: 5661792 (1997-08-01), Akinpelu et al.
EdS, "Local Number Portability SPA Model Evolution to Name & Address", pp. 1-3, Mar. 1995.
Sonnenberg et al., "Siemens Stromberg-Carlson's Contribution to MCI Metro's Local Number Portability Architecture Task Force Team," pp. 1-13 and attachments 1 and 2, Feb. 1995.
"Local Number Portability--MCI Metro Outline," BNR, MCI, Northern Telecom, Slides 1-24, Dec. 1994.
EdS, "Proposal for Directory Number Portability among Service Providers", pp. 1-7, Nov. 1994.

Affiliated with

Also associated with

Rating

Method for routing a call does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for routing a call, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for routing a call will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1122871