| 摘要 |
<p>The method involves transmitting an alarm message and an issue time for synchronization by an external alarm emitter (400) e.g. digital alarm emitter, to one of a set of master base stations (30) of a semi-network (300) of a multi-master wave network (200). The alarm message is transmitted by the master base station in temporal synchronization with the issue time to slave base stations (10, 20) respectively arranged on an emission ring (1) around the master base stations, where the stations are digital alarm converters.</p> |
