| 摘要 |
The present invention relates to service-dependent routing of a mobile-terminating call in a mobile communication system employing a multinumbering scheme. A visitor location register (VLR), as a response to a roaming number request from a home location register (HLR), allocates a roaming number to the call and the roaming number is returned to the HLR and further to a routing exchange (GMSC, EXC) to be used for routing the call to the mobile switching centre (MSC) associated with the VLR. In some cases there may be two different alternative transmission routes between the routing exchange (GMSC) and the MSC. In order to enable the routing exchange to select the appropriate one of these transmission routes for routing the call to the MSC, the roaming number (MSRN) allocated by the VLR contains a part (SERVN) which is dependent on the service required by the call and indicates the appropriate one of the transmission routes (ROUTE_1, ROUTE_2).
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