| 摘要 |
<p>An apparatus for processing a number portability call between homogeneous or heterogeneous telephone networks having a number portability supporting system (NPSS) and an implementation method thereof are provided. More particularly, provided are an apparatus and a method of supporting number portability, by which a number portability database (NPDB) for a variety of telephone networks is established in an NPSS, and number portability among wired telephone networks, mobile telephone networks, and voice over Internet protocol (VoIP) networks is commonly supported and processed. The apparatus for processing number portability includes: an NPSS formed using computer systems including an NPDB, a router for allowing access by wireline telephone companies, mobile communication companies or VoIP companies, and a number portability main server (NPMS); and computer systems and exchanges of telephone networks accessing the NPSS, querying the NPDB, or relaying and connecting a telephone call. Here, the number portability is a service allowing a telephone subscriber to change telephone service provider without changing an existing telephone number. According to the apparatus and method, a plurality of telephone networks can commonly access the NPSS and process a number portability call without building a local-NPDB, thereby minimizing investment cost for the number portability and facilitating maintenance.</p> |
