The user tried to connect from an unauthorized callingstation.
用户试图从未被授权的呼叫站点连接。
2
Optional signal indicates that the following frame is an identification of the callingstation.
可选信号标识后续的一些帧用来标识呼叫位置。
3
Please co-operate with the police by reporting any crime or suspicious activity immediately, either by dialling 110 or calling at your nearest police station.