| 摘要 |
A method for verifying the status of communication devices e.g. cellular telephones over a mobile telephone network, the method comprising the steps of: i) maintaining a list of telephone numbers; ii) selecting one or more of the telephone numbers for verification; iii) sending a request to the mobile telephone network for verification of the selected telephone numbers; iv) receiving an acknowledgement of the request together with an identification code for each of the selected telephone numbers; v) storing the identification code for each of the selected telephone numbers; vi) receiving a status indication from the mobile telephone network together with an identification code; and vii) updating the list using the received status indication for the telephone number corresponding to the identification code. Aspects of the invention include the status indication is transmitted to a verification server in a message that indicates whether the telephone number is valid or invalid, whether the telephone associated with the number is on or off or is roaming, any GSM error code, the home site of the telephone and current site of the telephone. Other information relevant to the current status of the telephone may also be included. It may be used as part of an Automated dialling system. |
