| 摘要 |
<p>A call unit (20) for use in an emergency call system has means for establishing outgoing telephonic communication over the public switched telephone network. The call unit (20) also comprises a dialler (40) operable to dial at least one designated remote destination under the control of operating means (24) responsive to an alarm signal. The operating means (24) is arranged to transmit alarm data to the remote location and is responsive to a control signal to transmit at least one pre-determined verbal message. The unit also includes addresses for the storage of data regarding the status thereof and speech means (48) for emitting a verbal message corresponding to data stored at an address in response to interrogation of the address.</p> |
