| 摘要 |
Emergency call system by which a caller can automatically call other parties to leave an emergency message, includes an emergency call unit having a memory for storing telephone numbers to be called and the emergency message, an emergency key, and a microprocessor for controlling storage of the numbers and emergency message in the memory, setting each number to be dialed in sequence, delay dialing of each number for a period of time (without first detecting a dial tone) to assure that an outgoing call can be made on the telephone line, and dialing the numbers in sequence upon activation of the emergency key. The emergency call unit starts a transmission of the emergency message to the dialed number to automatically advise of an emergency after a predetermined time after the number has been dialed and no busy signal has been detected during a predetermined time period.
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