A communication system comprising: a mobile station (118, 124) operable to communicate with other mobile stations via a first wireless link of a first kind between the mobile station (118, 124) and a communications network, and with proxy location servers via a second wireless link of a second kind different from the first kind; a short-range communicator (116, 122) operable to provide a location indication of the mobile station (118, 124) when the mobile station (118, 124) and the short-range communicator (116, 122) are within a communication range of one another; a location server operably coupled to a proxy location server (110, 112) and operable to communicate with the proxy location server to receive a notification of the location of the mobile station (118, 124) when detected to be within communication range of the short-range communicator (116, 122); the proxy location server (110, 112), configured to, responsive to establishing communication by a second wireless link of the second kind with the mobile station (118, 124) via the short-range communicator (116, 122) when the mobile station (118, 124) and the short-range communicator (116, 122) are within the communication range of one another: upload to the mobile station (118, 124) one or more circumstances of unavailability responses relevant to a location of the proxy location server (110, 112) that can be provided by the proxy location server (110, 112) upon request for the location of the mobile station (118, 124) from a querying terminal, and receive from the mobile station (118, 124), in response to the upload, an indication of a selected one of the one or more circumstances of unavailability responses; and wherein the proxy location server (110, 112) is further configured to provide the selected one of the one or more circumstances of unavailability responses, relevant to the location of the proxy location server (110, 112), responsive to one of: (i) receiving the indication from the mobile station (118, 124); and (ii) receiving a location query message querying the location of the mobile station (118, 124); and the location server is operable to communicate with the proxy location server (110, 112) to send the location query message querying the location of the mobile station (118, 124) and to receive the selected one of the one or more circumstances of unavailability responses. a mobile station (118, 124) operable to communicate with other mobile stations via a first wireless link of a first kind between the mobile station (118, 124) and a communications network, and with proxy location servers via a second wireless link of a second kind different from the first kind; a short-range communicator (116, 122) operable to provide a location indication of the mobile station (118, 124) when the mobile station (118, 124) and the short-range communicator (116, 122) are within a communication range of one another; a location server operably coupled to a proxy location server (110, 112) and operable to communicate with the proxy location server to receive a notification of the location of the mobile station (118, 124) when detected to be within communication range of the short-range communicator (116, 122); the proxy location server (110, 112), configured to, responsive to establishing communication by a second wireless link of the second kind with the mobile station (118, 124) via the short-range communicator (116, 122) when the mobile station (118, 124) and the short-range communicator (116, 122) are within the communication range of one another: upload to the mobile station (118, 124) one or more circumstances of unavailability responses relevant to a location of the proxy location server (110, 112) that can be provided by the proxy location server (110, 112) upon request for the location of the mobile station (118, 124) from a querying terminal, and receive from the mobile station (118, 124), in response to the upload, an indication of a selected one of the one or more circumstances of unavailability responses; and upload to the mobile station (118, 124) one or more circumstances of unavailability responses relevant to a location of the proxy location server (110, 112) that can be provided by the proxy location server (110, 112) upon request for the location of the mobile station (118, 124) from a querying terminal, and receive from the mobile station (118, 124), in response to the upload, an indication of a selected one of the one or more circumstances of unavailability responses; and wherein the proxy location server (110, 112) is further configured to provide the selected one of the one or more circumstances of unavailability responses, relevant to the location of the proxy location server (110, 112), responsive to one of: (i) receiving the indication from the mobile station (118, 124); and (ii) receiving a location query message querying the location of the mobile station (118, 124); and (i) receiving the indication from the mobile station (118, 124); and (ii) receiving a location query message querying the location of the mobile station (118, 124); and the location server is operable to communicate with the proxy location server (110, 112) to send the location query message querying the location of the mobile station (118, 124) and to receive the selected one of the one or more circumstances of unavailability responses.