| 摘要 |
PURPOSE:To ensure a quick countermeasure in case an emergency arises, by storing previously and into the switchboard the number to be dialed in case an emergency arises. CONSTITUTION:The number to be dialed in case an emergency arises at telephone 11 is decided and stored previously into switchboard 15. The dial signal transmitted from telephone 11 is compared with the stored number at switchboard 15. And an agreement is obtained through the comparison, the call signal is transmitted to remote telephone 12 by the agreement output. Thus the emergency signal is sent to the remote subscirber designated previously just by transmitting the dial signal decided previously. As a result, a quick countermeasure is possible to the occurrence of an emergency. |
