Telephonic communications – Plural exchange network or interconnection – Connection call model
Patent
1995-03-27
1997-08-26
Matar, Ahmad F.
Telephonic communications
Plural exchange network or interconnection
Connection call model
379220, 379207, H04M 300
Patent
active
056617925
ABSTRACT:
In an environment of competitive local and interexchange carriers, offering number portability between local carriers-serving a common region and between switches serving that region, each local carrier accesses a regional database to determine the identify of the carrier and switch serving a local customer. In addition, interexchange carriers access a national database to determine the identity of the carrier and switch serving the customer specified by the number dialed by an originating customer. For customers requiring high reliability service, alternate carriers can be used to serve such customers in case the primary carrier is unavailable; the databases identify these alternate carriers. Advantageously, this arrangement allows a high degree of freedom of movement of customers between carriers and geographic relocation without requiring a number change.
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Akinpelu Akinwale Ademola
Bhagat Promod Kumar
Garoutte Dana Lee
Hatalla Anthony
Hirsch Robert Bruce
AT&T
Gurey Stephen M.
Matar Ahmad F.
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