| 摘要 |
<p>The public address system (RA) has a call center (RZ) with a switching system (TK) and a data technical connected application server for detection and transmission of incoming emergency call. An end device (EG) is connected over a communication connection (KV) at the switching system for releasing an emergency call and is monitored from the call center. An emergency call annunciator (NM) for announcement is data technically connected to the terminal in such a way that the emergency call annunciator is automatically activated if the emergency call released by the terminal is interrupted. An independent claim is also included for a method for transmission of an emergency call.</p> |
