Means and method for providing local telephone number portabilit

Details Means and method for providing local telephone number portabilit Means and method for providing local telephone number portabilit

1996-11-04

1998-02-10

Zele, Krista

Telephonic communications

Special services

Service trigger

379111, 379219, H04M 342

Patent

active

057177490

ABSTRACT:
The invention provides the capability for creating local number portability, enabling a telephone service subscriber to retain a phone number when the local switch servicing the subscriber changes. A database acts as a centralized source of call connection information. Two tiers of databases are used; local databases dedicated to local switches are first queried for call connection information matching the dialed number, and a centralized database serving all switches is subsequently queried if local database response is not sufficient for call placement. Each dialed number is correlated to a call connection a information set containing augmenting information to provide the equivalent of the actual service number for the subscriber for call placement. Call connection information sets are dynamically maintained and updated between the centralized database and the local databases.

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