KR200199110Y1 - Auto attendant system - Google Patents

Abstract

The present invention relates to an unmanned automatic exchange system.

The present invention is connected to a switch 20 connected to a public telephone network 10 (PSTN), and transmits and receives a DTMF signal according to a result of detecting a tone generated by the switch 20 according to a call state between the caller and the called party. The callers connected to the switch 20 by extension are connected to each other, and when the callee connected to the switch 20 by extension is absent, the caller is connected through the switch 20 and the public telephone network 10 (PSTN). It is characterized in that the call is automatically connected to the called party's mobile phone or the call subscriber specified by the called party,

This makes it possible to always connect the caller with the callee even when the callee is absent.

Description

Unattended Automated Exchange System {AUTO ATTENDANT SYSTEM}

The present invention relates to an exchange system, and more particularly, to an unmanned automatic exchange system that is configured to automatically connect a caller's call with the called party when the called party is absent.

In general, telephone subscribers, such as banks, securities firms, insurance companies, travel agencies, government offices, hospitals, etc., which have a high volume of calls, and which use a public telephone network (PSTN), are mostly connected to the public telephone network (PSTN). (E.g., a private exchange or keyphone system) to connect the caller's call with the called party.

At this time, the private exchange or key phone system as described above generates DTMF signals such as ring back tone, busy tone, dial tone, and error tone according to the call state. On the other hand, it provides various services such as speed dial function, redial function, divert function, call rejection function and voice guidance function.

However, exchanges such as private exchanges or keyphone systems that are connected to a public telephone network (PSTN) to connect a caller's call to an extension subscriber, as described above, give only a simple error tone or busy tone to the caller, especially when the called party is absent. As a result, if the caller must make a call with the called party, the caller cannot talk to the called party.

Accordingly, the present invention is to overcome the above-mentioned problems, the object of the present invention is connected to a switch, such as a conventional private exchange or keyphone system, depending on the results of detecting various tones generated in the exchange, various calls The present invention provides an unmanned automatic switching system which provides a related service function and automatically connects a caller's call with the called party when the called party is absent by transmitting and receiving DTMF signals.

The unmanned automatic switching system for achieving the object of the present invention is connected to a switch connected to a public telephone network (PSTN), and the DTMF signal according to the detection result of the beep tone generated by the switch in accordance with the call state between the caller and the called party. Receiving calls between the caller and the called party connected to the exchange by an extension to each other, and when the called party connected to the exchange by the extension is absent, the caller's call is transferred through the exchange and the public telephone network (PSTN). The mobile phone or the called party is characterized in that it is automatically connected to the subscriber.

1 is a connection system diagram of the unmanned automatic exchange system according to the present invention,

2 is a block diagram of an unmanned automatic exchange system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: public telephone network (PSTN) 20: switchboard

30: unmanned automatic exchange system 30a: PSU

31 memory unit 32 codec circuit

32a: Channel 32b: Ring / Loop

33: voice control circuit 34: tone control unit

35: microcomputer 36: voice circuit

37: communication circuit 38: RTC circuit

39: monitoring circuit

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, an unmanned automatic switching system 30 according to the present invention is connected to a public telephone network 10 (PSTN) and to a switch 20 such as a private exchange or a key phone system to which a plurality of extension subscribers are connected. Connected.

The unmanned automatic switching system 30 detects various DTMF signals such as ring back tones, busy tones, dial tones, and error tones generated by the switch 20 according to a call state between the caller and the called party. Various service functions such as a speed dial function, a redial function, a switching function, a call rejection function, and a voice guidance function are provided.

The unmanned automatic switching system 30 connects a caller's call with a caller connected to the switchboard by an extension in accordance with a result of detecting the DTMF signal generated by the switchboard 20, and in particular, the caller If not, the caller's call is automatically connected to the called party's mobile phone or the called party's designated station through the switch 20 and the public telephone network 10 (PSTN).

Referring to FIG. 2, the unmanned automatic switching system 30 uses power supplied from the PSU 30a as a driving power, simultaneously performs an exchange task for eight lines, and externally calls for four lines. It is equipped with a function.

The memory unit 31 of the unmanned automatic switching system 30 has various messages and callees for performing voice service functions such as a pending sound function, a voice bulletin board function, a voice guidance function, an automatic answering function, and a voice recording function. The mobile phone number and the telephone subscriber station number designated by the called party can be stored, and the recorded voice of the caller and the called voice of the called party can be stored.

The codec circuit 32 encodes and decodes a voice signal transmitted and received through the channel 32a.

The ring / loop 32b opens and closes the call line of the extension subscriber connected to the switch 20.

The voice control circuit 33 applies the message and the voice stored in the memory unit 31 to the codec circuit 32 and stores the voice signal output from the codec circuit 32 in the memory unit 31.

The tone control unit 34 receives a signal tone generated from the switch 20 through the ring / loop 32b, while the call subscriber station designated by the called party's mobile phone number and the callee stored in the memory unit 31 is designated. DTMF signals such as numbers are transmitted to the switch 20.

The microcomputer 35 stores a message for performing a voice service function such as a pending sound function and a voice bulletin board function in the memory unit 31 and then stores the message stored in the memory unit 31 according to a call state. The audio signal is sent out through the voice control circuit 33 and the codec circuit 32.

The microcomputer 35 stores the caller's recorded voice and the called party's response voice in the memory unit 31 during the call, and then transmits them through the voice control circuit 33 and the codec circuit 32.

The microcomputer 35 stores the mobile phone number of the called party and the telephone subscriber station number designated by the called party in the memory unit 31, and then stores the tone control unit 34 and the ring / loop 32b according to a call state. The DTMF call signal corresponding to the called party's mobile number and the called party's subscriber station number stored in the memory unit 31 is transmitted through the switch 20 and the public telephone network 10 (PSTN). The called party is sent to the designated subscriber.

The microcomputer 35 performs data communication with a host computer (not shown) to add, delete or change contents stored in the memory unit 31 and update a system operation program.

The voice circuit 36 applies a signal input from the reserved sound emitter MOH and the voice bulletin board AUX to the microcomputer 35. The voice bulletin board (AUX) outputs a voice signal such as a company introduction, a product introduction, an extension number, etc. of a telephone subscriber station using the exchanger 20 and applies it to the microcomputer 35.

The communication circuit 37 serves as an interface for data communication using the RS-232C communication cable between the microcomputer 35 and the host computer.

The RTC circuit 38 classifies the voice service function performed by the control of the microcomputer 35 into day, night, lunch time, holiday, and the like, and performs the voice service performed by the microcomputer 35 according to the corresponding time. Switch the function automatically.

The monitoring circuit 39 notifies the microcomputer 35 of abnormality of the entire system and displays a warning message necessary for maintenance / management and maintenance to inform the user.

By the above configuration, the unmanned automatic exchange system according to the present invention operates as follows.

When the switch 20 generates a DTMF signal as a caller requests a call with a caller connected to the switch 20 through the public telephone network 10, the microcomputer 35 of the unmanned automatic switching system 30 According to a result of the tone control unit 34 detecting the DTMF signal of the switch 20 received through the ring / loop 32b, the caller and the caller of the callee connected to the switch 20 by extension are connected to each other. Let's do it.

At this time, if the called party connected to the exchange 20 by extension calls the call signal normally, the microcomputer 35 normally calls the caller and the called party through the public telephone network 10 (PSTN) and the exchange 20. Connect.

On the other hand, if the called party does not respond to the caller's call request as the called party connected to the exchange 20 by extension is absent, the microcomputer 35 will call the caller and the public telephone network 10 (PSTN) and In the state where the telephone line of the exchanger 20 is kept connected, the tone control unit 34 transmits DTMF signals such as the mobile phone number of the called party stored in the memory unit 31 and the telephone subscriber station number designated by the called party. And through the ring / loop 32b to the exchanger 20.

As described above, when the DTMF signal such as the called party's mobile number and the called party's telephone number designated by the called party is sent to the switch 20, the caller's calling signal is authorized to the called party's mobile phone or the called party designated by the called party. do.

At this time, the call line of the caller and the callee is connected to the caller and the public telephone network 10 (PSTN) and the callee's mobile phone (or the telephone subscriber station designated by the callee), and accordingly connected to the switch 20 by extension. Even if the called party is absent, the caller's call can always be connected to the called party.

As described above, the unmanned automatic switching system according to the present invention is configured to automatically connect the caller's call with the called party's mobile phone or the called party designated by the called party when the called party is absent, so that the called party is always absent. This has the effect of connecting the caller and the called party's call.

What has been described above is just one embodiment for implementing an unmanned automatic exchange system according to the present invention, the present invention is not limited to the above embodiments, the subject matter of the present invention claimed in the utility model registration claims below Any person having ordinary knowledge in the field to which the present invention pertains may make various changes without departing from the scope of the present invention.

Claims (1)

It is connected to a switch 20 connected to a public telephone network 10 (PSTN), and transmits and receives a DTMF signal according to a result of detecting a tone generated by the switch 20 according to a call state between the caller and the called party. The callers connected to the extension 20 connected to each other are connected to each other, and when the callee connected to the exchange 20 is not present, the caller is connected through the switch 20 and the public telephone network 10 (PSTN). An unattended auto attendant system for automatically connecting a call to a called party's mobile phone or a called party designated by the called party.