| 摘要 |
<p>The data telecommunication system (100) involves SMS (Short Message Service) or MMS (Multimedia Message Service) links (16,18) between a first subscriber (10) and further subscribers (20,30). Signals may be sent to a compatible target location (40) with given position data or coordinates (40x;40y). The operating procedure involves (a) sending target location coordinates from the first subscriber via the SMS or MMS links, (b) sending messages to the further subscribers, especially to the mobile telephone numbers of these subscribers, (c) reception and acceptance of the contents of the transmitted messages (d) starting and activation of program for guiding further subscribers toward target location.</p> |
