| 摘要 |
In a packet switching data transmission network on the one hand, and in a public telephone network on the other hand, a station ( 14 ) is started, the networks being interconnected via a call server ( 15 ). The transmission network comprises an administration server ( 11 ), a plurality of subnets administered by the administration server and a plurality of stations ( 14 ), each linked to a subnet. The administration server stores a respective location information for each subnet. A station emits a lease request ( 301 ), destined for the administration server. Then, the station receives from the administration server, in response to the lease request, a lease ( 302 ) containing the location information of the subnet of the station. Next, the station emits, destined for the call server, a registration request ( 304 ) comprising an identifier of the station as well as the location information. Then, on receipt of this request, the call server stores ( 305 ) in a call database a information associating the identifier of the station and the location information.
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