Kokusai Denshin Denwa Kabushiki Kaisha

Nec Corporation

Kokusai Denshin Denwa Co., Ltd.

Hideki Amano

Shin-ichi Sakayori

Masayoshi Sato

Hiroshi Kumakura

Kaoru Nishimatsu

Yoshimi Kobayashi

Ken-ichi Nishimura

Takashi Itani

The object of this invention is to provide a facsimile communication supplementary service device that allows facsimile communication users to receive accurate service information from telephone switching facilities without performing any operations whatsoever. When a call is received, the facsimile signal analysis and decision part determines whether said call is a facsimile signal, and if it is, monitors the communication until it is completed. When the communication is completed, the charging system calculates the communication charge and the facsimile response part prepares the facsimile information. Then, if the originating party requested for the automatic immediate charge notification service, then the system calls back the originating terminal and sends said facsimile information. As a result, the originating terminal, if it is a facsimile terminal, can receive information on communication charge as a facsimile message. Consulting information may also be added to said charge information.

Facsimile communication supplementary service device

An automatic facsimile signal analyzing system includes a switch unit, a service trunk, a signal identification trunk, a facsimile communication determination unit, and a control unit. The signal identification trunk restores a facsimile control signal from a modulated and encoded facsimile signal on the set speech path and performs collection of communication state information and detection of a start of facsimile communication on the basis of the restored facsimile control signal. The facsimile communication determination unit permits an operation of the signal identification trunk when the classification result from the service trunk represents a type other than the voice signal and analyzes the communication state information from the signal identification trunk. The control unit performs switching/connection control of the switch unit, connects the service trunk and the signal identification trunk, both of which are in an idle state, to the set speech path upon setting of the speech path, disconnects the service trunk from the speech path when the classification result is output, and disconnects the signal identification trunk from the set speech path when the classification result from the service trunk represents the voice signal and when a call corresponding to the set speech path is ended.

Automatic facsimile signal analyzing apparatus for a telephone exchange

A method and system for screening international phone calls to reduce the number of phone calls which are made simply for the purpose of talking with international operators (prank phone calls) and to reduce the workload of the operators. When an international incoming phone call is placed from a calling terminal abroad, a database is used to determine, based on the calling country code of the incoming phone call, whether the call is from a prank phone call country. If the call is from a prank phone call country, an announcement for determining the intention of the caller is sent to the caller. If the caller provides a response to the announcement, a determination is made as to whether the response is valid. If the response is determined to be valid, the call is connected to the operator. If the response is invalid, the call is determined to be a prank call and is thus disconnected.

Method and system for screening calls directed to an international

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Tokyo, Japan

Hideki Amano