JPH06311262A - Charging starting system for trunk line call origination in electronic private branch exchange - Google Patents

Abstract

PURPOSE:To start chaging only when conversation (speaking) is surely performed. CONSTITUTION:A central office trunk (COT) 6 of an electronic private branch exchange is provided with a voice detector (VD) 9 detecting a voice signal on the transmission side and the reception side, and a signal detected here is transferred through a scanner (SCN) 12 to a central processing unit (CC) 4 as speaking start information. The CC 4 stores this information in a speaking information area (INF) 13 prepared for each line, reads this INF 13 when a call is terminated, judges the execution of speaking (conversation) from a fact that the information is stored on the transmission side and the reception side, performs charging processing and outputs the result to an output part. Thus, since the charging of trunk line call origination is performed by judging a state as a speaking (conversation) state by monitoring the speaking, speaking time can be exactly processed even if there is no response signal. Further, the erroneous charging for no response, busy and unconnection can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic private branch exchange, and more particularly to a charging start system for originating a local line.

[0002]

2. Description of the Related Art In a conventional electronic private branch exchange, when a local line is originated, a selection signal is sent to the local line, and if there is no response signal, regardless of the state of the called party, the automatic call is always made automatically after a certain period of time. Billing starts, and billing continues until the caller puts the handset (on hook).

In such a conventional billing start system, billing is automatically started after a predetermined time elapses after the selection signal (dial signal) is transmitted, so that there is no ringing, no answer, no call, and no sound due to disconnection. If there is, the caller hangs up the handset (on
There is a problem that it is charged up to (Hook).

In order to solve such a defect, Japanese Patent Laid-Open No.
In Japanese Patent Laid-Open No. 2-176259, after the callee's response signal and voice signal are detected in the communication path, charging of the caller is started, and the callee's voice signal is detected for a predetermined period from off-hook. There is disclosed a billing system for a telephone communication system, which is characterized in that a message recommending that the line be once disconnected is automatically sent to the calling party when the call is not made.

Further, in Japanese Patent Laid-Open No. 61-232754, the billing control circuit of the terminal device stores the reception output of the receiver during off-hook, and based on this, the set time of the timer is set to increase the time. Disclosed is a billing system that bills each time according to the stored contents and bills according to the type of service.

[0006]

In all of the above-mentioned publications, since the charging of the calling party is started when the voice signal of the called party is detected, the calling party does not do so for some reason. There is a drawback that the billing will be started even if you do not have a conversation with. For example, suppose the called party was in an answering machine. In such a situation, when the calling party determines that the called party is out of the office by listening to the answering machine message from the called party, and the calling party places the handset without making any sound. Can be considered. In such a case, the caller does not have any conversation with the called party, but the conventional method is charged.

As described above, in the above-mentioned publication, since the call state is judged based on the voice signal of only the called party, the billing is started. Therefore, in the case where the conversation is not actually conducted as described above. However, there is a drawback that billing is started.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a charging start method for a local line transmission of an electronic private branch exchange, which starts charging only when a reliable conversation is made.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a charging start method for a local line transmission of an electronic private branch exchange is a voice signal detecting section provided separately for a transmitting side and a receiving side of a local line trunk of the electronic private branch exchange. Detects the conversation state with, and stores the time when the voice signal was detected by the voice signal detection unit as the call start information in the call information area of the main memory prepared for each line, and the calling subscriber at the end of the call. When the handset goes on-hook, the corresponding call information area is read, and it is determined that the call is in a conversation state because the call start information is stored in both the transmitting side and the receiving side of the area. It is characterized in that the earlier time of the call start information on the transmitting side or the receiving side stored in the call information area is set as the charging start time.

Further, in the above billing start method, when the call stored in the call information area is periodically monitored and only one side of the transmitting side and the receiving side stores the call starting information even after a certain period of time has passed, It is preferable that the call is judged to be abnormal and the line is disconnected.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows an electronic private branch exchange system which realizes a charging start system for station line transmission according to an embodiment of the present invention.

The illustrated electronic private branch exchange system comprises a subscriber (SUB) 1, a subscriber line (LC) 2, a digital switch (TDSW) 3, a central processing unit (CC) 4,
It has a main storage unit (MM) 5 and an office line trunk (COT) 6. The office line trunk 6 includes a codec (CO) 7 and
Two amplifiers (A) 8 for transmission and reception, two voice detectors (VD) 9 on the transmission side and the reception side, a codec interface (CINF) 10, a hybrid (H) 11, and a scanner ( SCN) 12. The main storage unit 5 includes a call information area (INF) 13.

Hereinafter, a charging start method for station line transmission according to the present invention will be described with reference to FIG. After the subscriber 1 makes an office call and sends a selected number (dial), the subscriber 1 is connected to the called party. In a call state, a voice signal is taken out between the codec 7 and the amplifier 8, and the taken voice signal is monitored by the voice detector 9. Here, when the voice detector 9 detects the voice signal, the voice detector 9 transfers the call start information to the central processing unit 4 via the scanner 12.

In response to the transferred call start information,
The central processing unit 4 stores the time when the voice signal is detected in the corresponding call information area (sending side T, receiving side R) 13 of the main storage unit 5.

When the call ends in this state, the call end program runs. When the billing process is required, the central processing unit 4 reads out the call start information stored therein from the call information area 13 of the main storage unit 5. Based on the read call start information, if the call start information (time) is stored in both the transmitting side and the receiving side, the central processing unit 4 determines that the call has a conversation and performs the charging process. To do. Further, the charge calculation is performed as follows. That is, the central processing unit 4
Compares the detection time of the transmission side with the detection time of the reception side, executes the charging calculation with the earlier one as the start time of the call, and outputs the result to the output device.

Further, in this embodiment, the central processing unit 4 periodically monitors the calls stored in the call information area 13, and the call start information is stored only on one side of the transmitting side and the receiving side even after a certain period of time has elapsed. If not, it is judged as an abnormal call and the line is disconnected.

It is needless to say that the present invention is not limited to the above-mentioned embodiments, and that various modifications may be made without departing from the scope of the present invention.

[0019]

As described above, according to the present invention, the voice signals of both the transmitting side and the receiving side are detected even if there is no response signal from the station, and when both the voice signals are detected, the call (conversation) is performed. ) Is determined, and the billing calculation is performed from the time when the voice signal is detected at that time, the call time can be accurately calculated. In addition, since charging is performed when a voice signal is detected on both the transmitting side and the receiving side, there is an advantage that charging can be prevented during calling, no answer, busy, disconnection, and the like.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electronic private branch exchange system that realizes a charging start method for office line transmission according to an embodiment of the present invention.

[Explanation of symbols]

 1 subscriber (SUB) 2 subscriber line (LC) 3 digital switch (TDSW) 4 central processing unit (CC) 5 main memory unit (MM) 6 station line trunk (COT) 7 codec (CO) 8 amplifier (A) 9 Voice Detector (VD) 10 Codec Interface (CINF) 11 Hybrid (H) 12 Scanner (SCN) 13 Call Information Area (INF)

Claims (4)

[Claims] 1. A voice signal detecting section separately provided on a transmitting side and a receiving side of a central line trunk of an electronic private branch exchange detects a conversation state, and when a voice signal is detected by the voice signal detecting section. The time is stored as call start information in the call information area of the main memory prepared for each line, and when the calling subscriber hooks the handset on-hook at the end of the call, the corresponding call information storage area is read and Since the call start information is stored in both the transmitting side and the receiving side of the area, it is determined that the call is in the conversation state, and the call start of the transmitting side or the receiving side stored in the call information area is started. A charging start method characterized in that the earliest time of information is used as the charging start time. 2. An abnormal call when the call stored in the call information area is periodically monitored and the call start information is stored only on one side of the transmitting side and the receiving side even after a lapse of a certain period. 2. A judgment is made to disconnect to the central office line.
Billing start method described. 3. An audio signal detecting section provided separately for a transmitting side and a receiving side of a local line trunk of an electronic private branch exchange, for detecting a conversation state, and prepared for each line, and the voice signal detecting section is used for audio. The main memory section that contains the call information area that stores the time when a signal is detected as the call start information, and when the calling subscriber hooks the handset on-hook at the end of the call, the corresponding call information area is read and Since the call start information is stored in both the sending side and the receiving side of the area, it is determined that the call is in the conversation state, and the call start information of the sending side or the receiving side stored in the call information area is stored. An electronic private branch exchange having means for setting the earlier time as the charging start time. 4. An abnormal call when the call stored in the call information area is periodically monitored and the call start information is stored in only one of the transmitting side and the receiving side even after a lapse of a certain period. 4. The electronic private branch exchange according to claim 3, further comprising means for judging and disconnecting from the central line.