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:
May. 07, 2002
Filed:
Aug. 21, 1998
Keijo Palviainen, Helsinki, FI;
Nokia Telecommunications Oy, Espoo, FI;
Abstract
The invention relates to a direct data access (DDA) from a digital mobile network to a data network in a centralized manner in a first mobile switching center (MSC ). Another switching center (MSCI) is arranged to route a mobile data call, addressed to the centralized DDA, to MSC as a digital call according to a bearer service (UDI) supported by the mobile network. The interworking function of the routed data call are divided between the MSCs. MSC comprises a first interworking function (IWF ) that provides the adaptation functions required by the centralized DDA and the digital bearer service. MSC comprises a second interworking function (IWFI) providing the adaptation functions required by the radio connection and the digital bearer service.