Canon Kabushiki Kaisha

Shoichi Takashima

Yoshihiro Tanigawa

Michihiro Izumi

Shoji Suzuki

Mitsuhiro Watanabe

Shinji Tsuchida

Shigeru Hiroki

Shunji Arai

Takuji Nakatsuma

Katsuhiro Kakizawa

Shigeki Sakurai

Kuniaki Ohtsuka

Yuichiro Tsutsui

Tsutomu Nishino

In a telephone exchange apparatus according to this invention, a message or data can be registered in an information medium such as an electronic notebook at a location away from a telephone, and the information medium is attached to the telephone to load the registered data. With this simple operation, data can be registered in a plurality of telephone exchange apparatuses, or a message can be displayed on telephones, thereby preventing registration from being forgotten, and informing a message.

Communication apparatus receiving information from portable information

A method of deciding whether an extension terminal is called or not is provided. The kind of communication is recognized on the basis of a set-up message received from the ISDN. Whether the extension terminal is called or not is decided on the basis of the result of comparison between the kind of the extension terminal and the kind of the communication recognized. There is also provided a private branch exchange comprising: a detector to detect a reception from an analog external line; a digital interface to connect a terminal corresponding to a procedure for a digital line; and a judging circuit to judge whether the terminal corresponds to a procedure for an analog line or not, wherein when the judging circuit decides that the terminal corresponds to the procedure for the analog line when the reception is detected by the detector, the digital interface transmits the set-up message to the terminal.

Private branch exchange capable of analyzing information received from

Telephone directory data that has been stored in a telephone exchange apparatus is retrieved by a specific extension terminal to select the dial number of a party. When an ordinary extension terminal other than the specific extension terminal calls the specific extension terminal, an outgoing call is generated in the specific extension terminal on an outside line in accordance with the retrieved dial number and the ordinary extension terminal is connected to the outside line based on the dial number. Further, when a cordless telephone accommodated in an extension of the telephone exchange is designated from the specific extension terminal and the specific extension terminal retrieves and selects a dial number, the cordless telephone calls the specific extension terminal so that a call based upon the dial number can be made from the cordless telephone.

Telephone exchange apparatus, and method of connecting calls therein

A communication apparatus includes a memory for storing extension number information or transfer destination information in association with calling party number information, a unit for receiving calling party number information sent from a calling party at a called party, a unit for comparing the calling party number information received by the receiving unit with the calling party number information stored in the memory; and a unit for notifying a call reception to an extension terminal equipment identified by the extension number information associated with the calling party number information received by the receiving unit, or transferring a call reception to the transfer destination associated with the calling party number information received by the receiving unit, respectively, in accordance with the comparison result by the comparing unit.

Communication apparatus

This invention relates to a communication apparatus which avoids interruption in the operation for an outgoing call of the first party from an extension telephone apparatus. In the case where there is conflict between an incoming call from the third party and an outgoing call from the first party in a selected unoccupied communication line, a call signal is transmitted to the all open extension telephone apparatus, at the same time, an other unoccupied communication line is automatically selected for the outgoing call. Accordingly, the conflict is avoided and the incoming call needs not be responded at the first party's telephone extension when a telephone number is being inputted, however, the fact that a call from the third party has been received is signaled on all open telephone extensions and can be answered there.

Control of incoming and outgoing calls in a key system

A communication apparatus includes a reception unit for receiving discrimination information for discriminating a calling party terminal equipment; a memory for storing the information received by the reception unit if no response is made to the call reception; and an output unit for visually outputting the information stored in the memory. The communication apparatus may further include a counter for counting the number of call receptions for each calling party number stored in the memory; and a unit for notifying one of the count result by the counter. The communication apparatus may also include a unit for determining if a call reception from a communication network is to be responded to or not; and a unit for calling the calling party after the display by the display unit, in response to an entry of a predetermined key.

Communication apparatus for storing abandoned call information

The type of an outside line acquired at the time of placing an outside-line call is identified, and an idle outside line of this same type is acquired when a call is placed to a party in an auto-repeat mode, thereby establishing the call to the party. Further, types of outside lines acquired preferentially at the time of originating an outside-line call are registered in advance, and idle outside lines are selected and acquired in accordance with the order of preference.

Automatic redial in a key telephone system having different line types

A telephone apparatus includes an extension telephone for receiving data from a card, a timepiece unit, and a control unit for alarming a coincidence between time data included in the data received from the extension telephone and time data of the timepiece unit. The control unit performs a display on the basis of display data included in the data received by the extension telephone.

Growing community of inventors

Tokyo, Japan

Shoichi Takashima