Patent ID: 6587688
Filing Date: 2003-07-01
Classification: H04W

Abstract:
For an international roaming mobile call from a mobile station, a method of providing to a serving mobile switching center (MSC), an appropriate telephone number for processing said call, comprising the steps of:a mobile station (MS) requesting registration and providing its identification to said serving MSC; said serving MSC requesting an associated Visitor Location Register (VLR) to create a record for said MS; said VLR requesting data from a Home Location Register (HLR) serving the identified MS; said HLR determining that the request was generated by a VLR of another country; said HLR converting telephone numbers of an HLR record for said MS into a form acceptable to said VLR; said HLR transmitting in a Mobile Application Part of a signaling message a record comprising the converted telephone numbers to said VLR; and said VLR requesting said serving MSC to serve said mobile; said mobile station originating a call; and said MSC serving said mobile station to control establishment of said call using information stored in said VLR and said HLR.