The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2013
Filed:
Dec. 15, 2009
Changcheng Wen, Shenzhen, CN;
Changcheng Wen, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A method for implementing a number portability (NP) service includes: by a local NP database, receiving a called user number from a switching device; determining an NP database storing NP data of the callee according to a preset correspondence between the called number and identifiers (IDs) of NP databases storing the NP data of the callee; and obtaining the NP data of the callee from the determined NP database and returning the obtained NP data to the switching device so that the switching device routes a call to the callee according to the returned NP data. In addition, a system for implementing an NP service is provided, including an NP database and a switching device. Two types of NP databases are also provided. With the present invention, each NP database only needs to store partial NP data, which lessens the load of each NP database in storing and updating NP data.