Patent ID: 6266526
Filing Date: 2001-07-24
Classification: H04M,H04W

Abstract:
A method of using a mobile switching center in common among a plurality of service providers, comprising:receiving a call initiated from a mobile subscriber;determining a caller group associated with the mobile subscriber,receiving a called number from the mobile subscriber;performing authentication and authorization processes for the mobile subscriber; andprocessing services for the mobile subscriber within the mobile switching center according to processing information corresponding to the caller group;wherein, when the mobile subscriber is authenticated and authorized, processing services for the mobile subscriber comprises:determining according to the caller group whether a designated greeting announcement is required;when the designated greeting announcement is required, supplying the designated greeting announcement to the mobile subscriber;determining a particular trunk to which the call is to be routed; androuting the call to the particular trunk;wherein determining whether the designated greeting announcement is required comprises searching an announcement search table according to the caller number; andwherein the announcement search table comprises a pluralities of entries, each entry having a caller group number and a corresponding indication of whether to supply a corresponding greeting announcement.