JPH03154549A - Talking destination reply detector - Google Patents

Abstract

PURPOSE:To attain accurate reply detection by generating a loop in a pseudo way when off-hook is detected and an end of dial is detected and identifying a signal on a telephone line with a discrimination circuit while a signal such as voice from a terminal telephone set is tentatively restricted. CONSTITUTION:The detector is provided with a signal detection circuit 11 detecting a ring back tone, a busy tone sent from an exchange and a voice signal from a talking destination or the like, a hook detection circuit 3 detecting off-hook or on-hook from the terminal equipment 1 and a dial monitor circuit 6 monitoring the dial signal from the terminal equipment 1. Then the detector is provided with a termination circuit 14 generating a loop in a simulating way and restricting a signal from a voice signal from the terminal equipment 1 tentatively, a monitor circuit 7 sending various signals sent from an exchange and a talking destination to a telephone line L1, 2 to the terminal equipment 1 and a discrimination circuit 12 identifying the reply of the opposite party. As a result, the polarity inversion of the telephone line and the signal from the exchange and the talking destination voice signal are detected while controlling the call to the telephone line from the terminal equipment. Thus, accurate reply detection is implemented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a called party response detection device for detecting a called party response, which is used on a line between an exchange and a terminal telephone, which is the final communication device.

(Prior Art) Conventionally, as a method for detecting a caller's response in a communication equipment terminal, a method of detecting a polarity reversal of a telephone line due to the operation of an exchange has been used. However, this method is effective when connecting a communication device terminal directly to a telephone line, but when connecting to an extension of a business office group telephone, private branch exchange telephone, or a single telephone accommodation facility such as a business phone, Since it is not possible to detect the polarity reversal of the telephone line, it is not possible to detect a caller's response, and it may not be possible to calculate call charges or transfer messages from an answering machine.

[Problem to be solved by the invention]

In such cases, there is an interdigit timeout method that detects the dial signal from the terminal phone and automatically determines that the other party is answering after a certain period of time has passed. Since the response is identified based on time, there is a problem in that it differs from the actual call status. Similarly, there is a method of detecting a ringback tone or busy tone from an exchange after a certain period of time has elapsed. This method is effective when performed at a terminated communication equipment terminal, but when detection is performed in the middle of a telephone line, the voice etc. from the terminal telephone is transmitted over the telephone line, and the ringback tone from the exchange There is a problem that the response is not accurately detected because the busy tone is combined with the busy tone.

The purpose of this invention is to solve the above-mentioned problems, and to monitor the ring bank tone and busy tone from the exchange and the voice signal of the called party in the middle of the line where polarity reversal cannot be detected, and to detect the called party's response. The goal is to provide a device that can do this.

(Means for Solving the Problems) A called party response detection device according to the present invention as set forth in claim (1) detects a ringback tone or a busy tone sent from an exchange, a voice signal, etc. from a called party. A pseudo loop is created with a signal detection circuit, a hook detection circuit that detects off-hook and on-hook of the terminal telephone, and a dial monitoring circuit that monitors the dial signal from the terminal equipment, and a pseudo loop is created to detect signals such as voice from the terminal telephone. It is equipped with a termination circuit for temporary regulation, a monitor circuit for sending various signals sent to the telephone line from the exchange or the called party to the terminal telephone, and a judgment circuit for identifying the response of the other party.

The invention described in claim (2) further provides a call charge calculation unit that receives a response detection signal from the call destination response detection device according to claim (1) and starts calculation of a call charge; It includes a call charge details output device that outputs the calculation results of the calculation section.

Furthermore, the invention described in claim (3) is based on claim (1).
receive a response signal from the call destination response detection device described in
It is equipped with a recording control section that automatically starts recording a call.

Further, the invention according to claim (4) receives a response detection signal from the called party response detection device according to claim (1),
It is equipped with a recording and reproducing circuit that automatically reproduces recorded audio signals and the like.

(Operation) In the invention according to claim (1), when off-hook is detected by the hook detection circuit and completion of dialing is detected by the dial monitoring circuit, a pseudo loop is created and the terminal Signals such as voice from the telephone are temporarily regulated by the termination circuit, and in this state, the signal on the telephone line is identified by the determination circuit to detect the other party's response.

Further, in the invention described in claim (2) of the present invention, the calculation of the call charge is started after receiving the response detection signal from the call destination response detection device.

Furthermore, in the invention described in claim (3) of this invention,
After receiving a response detection signal from the call destination response detection device, call recording is started.

Further, in the invention described in claim (4) of the present invention, after receiving the response detection signal from the called party response detection device,
Playback of the recorded audio signal etc. is started.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of the called party response detection device according to the present invention, where LL and L2 are telephone lines;
1 is a terminal telephone, 2 is a hook detection section, 3 is a hook detection circuit consisting of the hook detection section 2 and contacts, etc., 4 is a dial signal detection circuit, and 5 is a PB signal detection circuit; A dial monitoring circuit 6 is configured with the PB signal detection circuit 5. 7 is the monitor circuit, 8 is 400H
z detection filter 9 is a voice detection filter, for example 3
00Hz, 1000Hz, and 1500Hz are used simultaneously. 10 is an amplifier, and the signal detection circuit 11 is constituted by the above-mentioned 8 to 10.

12 is a determination circuit; 13 is a termination relay; 14 is a termination circuit composed of the termination relay 13 and contacts; and 15 is a transformer. Below, the operation from the terminal telephone 1 after the calling operation to the detection of the other party's response will be explained.

To operate this, when the terminal telephone 1 is taken off-hook, the hook detection circuit 3 detects the off-hook of the terminal telephone 1, and the dial signal detection circuit 4 and the PB signal detection circuit 5 monitor the dial of the terminal telephone 1.

When the end of dialing of the terminal telephone 1 is detected, the termination circuit 1
4 is operated to regulate outgoing calls from the terminal telephone 1 and monitor signals sent to the telephone lines ,L,. Signals of telephone lines Ll and L2 are detected via a transformer 15,
If the signal is a busy tone, it is detected by the 400 Hz detection filter 8 and the termination circuit 14 is restored, and if it is a ringback tone, it is similarly detected by the 4008Z detection filter 8 and the end of the ringback tone is waited for.

Detection of the other party's response is performed using the voice detection filter 9.
Detects a frequency signal other than Hz, amplifies it with the amplifier 1o, identifies the voice signal with the determination circuit 12, and if it is confirmed to be a voice signal, restores the termination circuit 14 and allows the terminal telephone 10 to make a call. put it in a state.

Since this invention has the above-mentioned configuration, the detection of the other party's response is performed accurately.
The activation of the answering machine, etc. can be performed reliably. These will be explained in order below.

FIG. 2 shows an embodiment in which the present invention is applied to charge calculation, in which 20 is a call charge calculation device, 16 is a call charge calculation section, 21 is a call charge detail output device, and the other parts are the same as those shown in FIG. is the same as

In this operation, the call charge for the terminal telephone 1 is calculated by the call charge calculation device 20 and outputted to the call charge details output device 21.

To operate this, when the terminal telephone 1 goes off-hook, the hook detection circuit 3 detects the off-hook state, enters a dial signal monitoring state, and the dial signal detection circuit 4 detects the dial signal.

When the dialing signal ends, the call charge calculation unit 16 starts provisional monitoring of the call time, and the termination circuit 14 operates to temporarily restrict the voice from the terminal telephone 1, and the signal detection circuit 11 detects the telephone line LL, L2. It monitors the ringback tone, busy tone, and voice of the called party, and sends the signals, voice, etc. to the terminal telephone 1 by the monitor circuit 7.

When the signal detection circuit 11 detects a ringback tone,
The determination circuit 12 confirms the detection, cancels the provisional billing performed by the call charge calculation unit 16, waits for the detection of a voice signal etc. from the called party, and when the signal detection circuit 11 detects voice, the determination is made again. The detection is confirmed in the circuit 12, the termination circuit 14 is restored, and the normal call state is established, and the call charge calculation unit 1
Step 6 monitors the call time.

When the signal detection circuit 11 detects a voice before the ringback tone, the call charge calculation section 16 continues the calculation and monitors the call time, and when the signal detection circuit 11 detects a busy tone, the judgment circuit 12 Check the detection with
The provisional calculation being carried out by the call charge calculation unit 16 is stopped, the termination circuit 14 is restored, and the system enters a standby state.

When a call on the terminal telephone 1 ends, the hook detection circuit 3 detects on-hook, etc., and the call charge calculation unit 16
The call charge is calculated and output to the call charge detail output device 21.

FIG. 3 shows an embodiment in which the present invention is applied to a private illumination recording device, and 30 is an automatic recording device when making a call;
17 is a recording control section. Other details are shown in Figures 1 and 2.
It is the same as the figure.

In this operation, the outgoing call from the terminal telephone 1 is recorded by the outgoing automatic recording device 30. To make this work,
When the terminal telephone 1 goes off-hook, the hook detection circuit 3 detects the off-hook and enters a dial signal monitoring state, and the dial signal detection circuit 4 detects the dial signal. When the dialing signal ends, the termination circuit 14 operates to temporarily restrict the voice from the terminal telephone 1, and the signal detection circuit 11 detects the ringback tone and busy tone sent to the telephone lines Ll, L2, etc., and the voice of the called party. While monitoring the voice, the monitor circuit 7 sends the signal voice etc. to the terminal telephone 1.

When the signal detection circuit 11 detects a voice signal etc. from the called party, the determination circuit 12 confirms the detection, restores the termination circuit 14, returns to the normal call state, and instructs the recording control unit 17 to start recording. Give instructions and start recording. When the call being made on the terminal telephone 1 ends, the hook detection circuit 3 detects on-hook, etc., and the recording ends.

FIG. 4 shows an embodiment in which the present invention is applied to an answering machine, where 40 is an answering machine, 18 is a call/call control section, and 19 is a recording/playback section. Note that the other parts are the same as those in FIGS. 1 to 3.

The main operation of this entire embodiment is the operation when the answering machine 40 transfers a message.

To operate this, the answering machine 40 automatically makes a call while message transfer is possible, the hook detection circuit 3 detects off-hook and enters the dial signal monitoring state, and the dial signal detection circuit 4 detects the dial signal. . When the dialing signal ends, the termination circuit 14 operates to temporarily restrict the voice from the answering machine 40, and the signal detection circuit 11 detects the ringback tone and busy tone sent to the telephone line, L2, and the voice of the called party. While monitoring the voice, the monitor circuit 7 sends the signal voice to the transmission/call control section 18.

When the signal detection circuit 11 detects a voice signal from the called party, the determination circuit 12 confirms the detection, restores the termination circuit 14, and instructs the recording and reproducing section 19 to start reproducing the message. conduct. The operation ends when the playback performed by the recording/playback section 19 ends or when the called party goes on-hook.

〔Effect of the invention〕

As explained above, the invention according to claim (1) includes a signal detection circuit that detects a ringback tone or a busy tone sent from an exchange, a voice signal from a called party, and a terminal telephone. A hook detection circuit that detects off-hook and on-hook, a dial monitoring circuit that monitors dial signals from the terminal telephone, and a termination circuit that creates a pseudo loop and temporarily restricts signals such as voice from the terminal telephone. Since we have installed a monitor circuit that sends various signals sent from the exchange or the called party to the telephone line to the terminal telephone, and a judgment circuit that identifies the response of the other party, the terminal telephone that needs to detect the response of the called party can In addition to the normal telephone line polarity reversal function,
Signals from the exchange and voice signals from the called party can be detected while controlling transmission from the terminal telephone onto the telephone line, making it possible to detect responses more accurately than in the past.

Furthermore, the inventions described in claims (2) to (4) provide for recording or playing back a call charge 1 after receiving a response detection signal from the call destination response detection device of the invention described in claim (1). This has the advantage of guaranteeing accurate operation without malfunctions.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram showing one embodiment of this invention, FIG. 2 is a circuit configuration diagram showing another embodiment of this invention, and FIG. 3 is a circuit diagram showing still another embodiment of this invention. , FIG. 4 is a circuit diagram showing still another embodiment of the present invention. In the figure, LL and L2 are telephone lines, 1 is a terminal telephone, 2 is a hook detection section, 3 is a hook detection circuit, 4 is a dial signal detection circuit, 5 is a PB signal detection circuit, 6 is a dial monitoring circuit, and 7 is a monitor Circuit, 8 is 400Hz detection filter, 9
10 is a voice detection filter, 10 is an amplifier, 11 is a signal detection circuit, 12 is a determination circuit, 13 is a termination relay, 14 is a termination circuit, and 15 is a transformer.

Claims (4)

[Claims] (1) A signal detection circuit that detects ringback tones and busy tones sent from the exchange, voice signals from the called party, etc. on the line between the exchange and the terminal telephone, which is the final communication equipment, and a signal detection circuit that detects the off-hook and terminal telephone of the terminal telephone. a hook detection circuit that detects on-hook; a dial monitoring circuit that monitors dial signals from the terminal telephone;
A termination circuit that creates a pseudo loop and temporarily restricts signals such as voice from the terminal telephone, and a monitor circuit that sends various signals sent to the telephone line from the exchange or the destination to the terminal telephone. What is claimed is: 1. A call destination response detection device comprising: and a determination circuit for identifying a response from the other party. (2) A call charge calculation unit that receives a response detection signal from the call destination response detection device according to claim (1) and starts calculating a call charge, and a call charge calculation unit that outputs the calculation result of the call charge calculation unit. A call charge calculation device comprising a charge detail output device. (3) An automatic call recording device comprising a recording control section that receives a response signal from the call destination response detection device according to claim (1) and automatically starts recording the call. (4) An answering machine characterized by being equipped with a recording and reproducing circuit that receives a response detection signal from the call destination response detection device according to claim (1) and automatically reproduces a recorded voice signal, etc. Telephone device.