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:
Oct. 05, 2004
Filed:
Oct. 06, 2000
Uwe Stahl, Leonberg, DE;
Wolfgang Lautenschlager, Weissach-Flacht, DE;
Lothar Krank, Ditzingen, DE;
Hartmut Weik, Stuttgart, DE;
Alcatel, Paris, FR;
Abstract
The invention relates to a method of supporting the establishment of a telephone call from a calling terminal (TE ) through an IP network (IPNET) to a telephone terminal (TE ) of a telephone network (TELENET ), to a server (SERV) of an IP network, and to a computer product (CP) for carrying out the method. To route the call through the IP network (IPNET), the server (SERV) of the IP network (IPNET) is contacted, which controls the routing of the call through the IP network (IPNET). If the server (SERV) determines that the call is directed to a telephone terminal (TE to TE ) of a telephone network (TELENET , TELENET ), it will contact a server (NPS) of this telephone network (TELENET ). The server (SERV) of the IP network will request from the server (NPS) of the telephone network number portability information about the telephone terminal (TE ) to which the call is directed. Based on the requested number portability information, the server (SERV) of the IP network will determine from a set of VOIP gateways (GW , GW ) available between the IP network (IPNET) and the telephone network (TELENET ) that gateway (GW ) through which the call (VCON) is to be routed into the telephone network (TELENET ), and initiate the routing of the call through this VOIP gateway (GW ) into the telephone network (TELENET ).