Importance

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Abstract

The invention relates to methods for call establishment in a cellular radio system. In the inventive method, the visitor location register stores information (405) on whether the subscriber (CPP) is located within the service area of its home private branch exchange (PBX) indicated with a home location area identifier, in response to the location data request (106) placed by the mobile services switching center the visitor location register (VLR) checks the subscriber data of the subscriber and finds that the subscriber (CPP) is located within the service area of its home private branch exchange indicated with a home location area identifier, the visitor location register does not initiate the mobility management functions pertaining to normal connection establishment in the system.

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First Claim