| 摘要 |
The present invention relates to an information retrieval concerning information about telecommunication network operators. In particular, the present invention relates to a method for an automatic information retrieval of public land mobile network (PLMN) operators serving telephony services of subscribed mobile communication terminals. For instance, automatic retrieval of network information about network operators serving for telephony services of a communication terminal identified by a telephone number may be performed wherein a request is coded by the terminal which comprises one or more telephone numbers. The request is transmitted to a network serving entity for performing the network information retrieval. The network serving entity receives the request which is decoded to extract the one or more telephone numbers and on the basis of the one or more telephone numbers network information is retrieved. A response is coded which includes the retrieved network information and the coded request is transmitted to the communication terminal from which the request has being originally transmitted. The communication terminal receives the corresponding response comprising network information relating to the one or more telephone numbers. The response is decoded to extract the network information and it is stored accordingly in conjunction with the one or more telephone numbers.
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