| 摘要 |
<p>The present invention relates to apparatus for transmitting an alarm condition, following the occurrence of a state of alarm, by automatically dialling prestored telephone numbers and by the automatic transmission of an alarm message upon receipt of a response to said dialling. The transmitter is used in conjunction with telephones, the numbers of which are pre-stored for dialing, which have a teleprinter connected to them via a MODEM. The transmitted message, coded to meet requirements of the telephone network being used, is such that a readily intelligible message is printed on a teleprinter connected to a responding telephone. The transmitter may be so constructed that the stored telephone numbers as well as other information relating to the content of the message and/or the specific operating procedures of the transmitter may be modified via a MODEM connected to one of the telephones which can be dialled by the transmitter.</p> |
