In the key telephone system or the central unit of PLASTIC BONDED EXPLOSIVE which

摘要

PROBLEM TO BE SOLVED: To provide a key telephone apparatus in which a call is terminated at a specified section, even when the dial-in number is changed, and an originator dialed either the old or new telephone number.;SOLUTION: In the key telephone main unit, a central control section 11 is provided with a terminating number analyzing means F37, an originating number analyzing means F38, and an incoming-call processing means F42, a storage section 12 is provided with an old/new telephone number storage means F44 and a changed incoming call record storage means F45. When a terminating number, delivered from an originator, exists in the old telephone numbers and new telephone numbers of the old/new telephone number storage means F44, the originating number analyzing means F38 collates whether an originating number matching that of the originator is stored in the altered incoming-call record storage means F45, and termination processing is performed using the received terminating number, as it is, if they match each other; otherwise termination processing is performed by converting into a new telephone number, in accordance with a telephone number conversion table in the old/new telephone number storage means F44.;COPYRIGHT: (C)2007,JPO&INPIT