Electronic exchange and key telephone system
AssigneeKabushiki Kaisha Toshiba
InventorsTamotsu Wakabayashi, Masashi Ishida, Katsunori Utsumi, Nobuhiro Masaki
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Abstract
The present invention provides an electronic exchange capable of certainly making forwarding to a telephone at the forwarding destination. When an electronic exchange receives a forwarding acknowledgement signal “Facility message” from an electronic exchange, if a telephone to be called is idle, the electronic exchange makes the telephone shift to the receiving standby state for the forwarding, turns on an extension button of the telephone and sets the call transmission and the call reception except for the forwarding to be impossible.
Claims21
An electronic exchange capable of controlling call reception from and call transmission to other electronic exchanges, comprising:
- means for receiving a requbst for a forwarding from the other electronic exchanges;
- and
- prohibiting means for setting a telephone of forwarding destination connected to the own electronic exchange to be in a state of prohibiting the call reception except for the forwarding or the call transmission at the time to make said telephone shift to a standby state for the forwarding in response to said request for the forwarding.
An electronic exchange capable of controlling call reception from and call transmission to other electronic exchanges, comprising:
- means for receiving a request for a forwarding from the other electronic exchanges;
- and
- announcement setting means for setting a telephone of forwarding destination connected to the own electronic exchange to announce to a user of said telephone that said telephone is set in a standby state for the forwarding at the time to make said telephone shift to said standby state for the forwarding in response to said request for the forwarding.
Dependencies are inferred from the claim text.