JPS6247022B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voice storage and playback device that calls a telephone terminal, reproduces and decodes stored voice information, and transmits the same to the telephone terminal.

<Background> For example, when you make a call, if the other party is busy or absent, you will need to try again. In such a case, the other party's telephone number and message voice information are transmitted to the voice storage and playback device and stored, and the voice storage and playback device reads out the other party's phone number at an appropriate time and calls the telephone, It has been proposed that when the other party answers, the corresponding voice message information is reproduced, decoded, and sent.

When such a voice storage and playback device is housed in a private branch exchange and calls are made to any party and various voice information is transmitted, some means of detecting the response of the called party is required because the calling party is not a human but a machine. do. When using the extension line of a private branch exchange for transmission from a voice storage and playback device, the conventional private branch exchange
Generally, the polarity reversal signal of the originating subscriber's line is not used when the called party responds, as is seen in central office exchanges including CES (Central Telephone System), so the originating extension side, that is, voice storage and playback, is not used. The device may detect a response from the called party when the ringing tone stops, and if the ringing tone does not stop, it is determined that the other party is absent and there is no response, and if a busy tone is detected, It is conceivable to determine that the opponent is blocking the space. However, in this case, the ringing tone is repeated for one second and then paused for two seconds, and detecting such an AC signal takes more time than detecting polarity reversal of a DC signal. For this reason, there may be a delay of about 3 seconds for the audio storage and playback device to detect a response from the called party, and even if the called party responds, it will be silent for this delay time before the audio information can be heard. If this level of silence occurs, the receiving party may think it is a mistaken call and hang up the handset.

On the other hand, when the caller answers and picks up the handset, the polarity of the direct current on the subscriber line is reversed.
If this is detected, the response from the called party can be immediately detected, but as mentioned earlier, the private branch exchange does not reverse the polarity of the originating subscriber line, so the private branch exchange transmits the polarity reversal to the voice storage and playback device. It is necessary to connect a special dedicated line for this purpose, and it is not possible to simply connect the voice storage and playback device to an existing private branch exchange.

<Summary of the Invention> The object of the present invention is to connect to a private branch exchange, detect a call response by stopping the ringing tone, and eliminate the need for silence until voice information is sent, without having to provide a dedicated line for detecting a response from the called party. An object of the present invention is to provide an audio storage and playback device that eliminates the state.

According to the present invention, there is provided a means for detecting the ringing tone and determining that the called party has answered when the ringing tone stops, and for transmitting an audible activation tone indicating that the call is received from the voice storage and playback device, Sending out the audible startup sound when making a call;
When a response is detected when the ringer stops, audio information is sent instead of the audible activation tone. When the receiving party picks up the handset, the audible start-up sound is heard, so the user can know that the incoming call is from the audio storage and playback device, and can prepare for the next action of listening to various audio information. The above-mentioned silent state does not occur immediately after the response.

<Example> Next, an example of the present invention will be described with reference to the drawings. The voice storage and playback device 1 of the present invention includes a voice storage and conversion section 2, a control device 3, a ring tone detection circuit 4, a busy tone detection circuit 5, a dial tone detection circuit 6, an audible startup tone generation circuit 7, and a switching circuit 8. , an extension interface circuit 9 are provided. This audio storage and playback device 1
is connected to a private branch exchange through an extension line 10 (not shown in the figure). Although the audio storage and playback device 1 naturally includes incoming call processing, it is not shown in the figure because it is not an essential part of the present invention. Although the extension line interface circuit 9 is shown for only one line of the extension line 10, there may be a plurality of extension line interface circuits 9.

The control device 3 sends a request to send various voice information stored in the voice storage and conversion section 2 to an arbitrary party, that is, an extension telephone or an outside telephone, via the extension line 10 and a private branch exchange (hereinafter referred to as the exchange). , the control device 3 activates the extension interface circuit 9, closes the loop of the extension line 10, issues a call request to the exchange, draws the extension interface circuit 9 to the tone detection circuit 6, and closes the loop of the extension line 10. Detection and monitoring of dial tones that are expected to be received starts. At this time, if a dial tone is not detected even after a certain period of time has elapsed since the loop was closed, the control device 3 controls the extension interface circuit 9 to open the loop of the extension line 10, and terminates the call operation once again. This is a trial.

When the dial tone is detected, the control device 3 controls the extension interface circuit 9 to send a selection signal to the exchange using a dial pulse or a PB (push button) signal from the telephone number information of the destination party stored in the voice storage conversion section 2. At the same time as the transmission is completed, the audible startup sound generation circuit 7 and the switching circuit 8 are controlled to send an audible startup sound to the extension line 10 via the extension interface circuit 9. The signal is pulled into the ringing tone detection circuit 4 and the busy tone detection circuit 5, and monitoring of both detection circuits 4 and 5 is started.

At this time, if the monitoring result of the signal received from the exchange detects a busy tone, or if the stoppage of the ringing tone is not detected even after a certain period of time has passed after detecting the ringing tone, it is determined whether the called party is busy or not. It is determined that the dial tone has not been detected, and the same processing as that for the case where the dial tone is not detected is performed. If a stop of the ringing tone is detected within a certain period of time after detecting the ringing tone,
Determining that it is a response from the called side, the control device 3 controls the audible startup sound generation circuit 7, the switching circuit 8, and the audio storage conversion unit 2 to immediately stop the audible startup sound that has been sent out in advance, and starts the audio storage. The various audio information stored in the conversion unit 2 and applicable to transmission is switched to the reproduced and decoded information, and the output is transferred to the extension interface circuit 9 and the extension line 10.
and sends it to the called party via the exchange. Also, if no busy tone or ringing tone is detected even after a certain period of time has elapsed since the detection circuits 4 and 5 started monitoring, it is determined that the called party has responded, and the same process as the above-mentioned response is performed. conduct.

Note that the voice storage/conversion section 2 can be used to encode and store voice from an extension telephone or a line trunk, that is, an outside telephone, or to store voice separately. For example, a chime sound is used as the audible startup sound.

As explained above, according to the present invention, the called party emits an audible start-up sound at the same time as the response, during the period from when the voice storage/playback device monitors and detects the response of the called party until it starts sending out various types of corresponding audio information. There is an advantage that by listening, you can know when a call has arrived from the audio storage and playback device, and prepare to listen to various audio information. Furthermore, since the device detects a ringing tone, the voice storage and playback device and the private branch exchange can be used by simply connecting to a conventional private branch exchange without connecting a special dedicated line.

[Brief explanation of the drawing]

The figure is a block diagram showing one embodiment of the present invention. 1: Audio storage and playback device, 2: Audio storage conversion unit,
3: Control device, 4: Ringing tone detection circuit, 5: Busy tone detection circuit, 6: Dialing tone detection circuit, 7: Audible startup tone generation circuit, 8: Switching circuit, 9: Extension interface circuit, 10: Extension line.

Claims (1)

[Scope of Claims] 1. A telephone terminal is called from a voice storage/playback device connected to a private branch exchange, a response from the telephone terminal is detected, and the stored voice information is reproduced, decoded, and sent to the telephone terminal. In the voice storage and playback device, means for detecting a ringtone and detecting a response from the telephone terminal when the ringtone stops, and means for transmitting an audible activation tone indicating that a call is received from the voice storage and playback device. . A voice storage and playback device comprising: control means for transmitting the audible start-up sound to the telephone terminal at the time of a call, and upon detecting the response, stopping the transmission of the audible start-up sound and transmitting the voice information.