JPH0332296A - Key telephone system - Google Patents

Abstract

PURPOSE:To supply suitable service to a caller by transmitting a series of MF signals showing the call back of ring transfer (R.T) and the extension number of a transfer destination through a sound speech path to the interface circuit of a single telephone set at the time of the R.T call back to the interface circuit of the single telephone set. CONSTITUTION:When a single telephone set interface circuit 5 is loaded on a main device 1 and an automatic sound responding device 27 is connected to this circuit 5 and used, the MF signal showing the R.T call back and the MF signal showing the extension number are sent thorugh a call exchanging means 13 to the single telephone set interface circuit 5 in the case that there is the R.T call back to the single telephone set interface circuit 5. The automatic sound responding device 27 receives the MF signals after an automatic response to the R.T call back. According to the received MF signal, the automatic sound responding device 27 can recognize whether this call is the R.T call back or the extension number of the transfer destination. Thus, the service can be selectively supplied corresponding to the result of this recognition.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Field of Application) The present invention relates to a key telephone device, and in particular, the present invention relates to a key telephone device, and in particular, to a key telephone device, in which transfer from an automatic voice response device connected to a main device to an extension terminal by ring transfer is performed. The present invention relates to a button telephone device that enables the use of telephones.

(Prior Art and Problems to be Solved by the Invention) In this type of conventional key telephone device, a main device is equipped with a separate telephone interface, and an automatic voice response device is connected to this. When an outside call arrives, this automatic voice response device automatically responds and sends out a predetermined voice message. Next, when an MF double signal indicating the transfer destination extension number is sent from the outside telephone, the automatic voice response device requests a transfer called a ring transfer (R, T) to the main device and transfers the 1-1 line number. Let me know and then end the conversation. When the main device receives this transfer request, it calls the terminal (transfer destination) indicated by the above extension number. This call is called an R,T call. Here, R,
T refers to the one-sidedness of transfer in a key telephone device, and is a function that generates a ring tone at the transfer destination while leaving the transfer source in an idle state.

In this R, T call, if the transfer destination does not respond for a certain period of time, this R, T call is normally stopped and the transfer source is called again. The call is called an R,T callback.

By the way, the standalone telephone interface to which the automatic voice response device is connected is originally for connecting a standalone telephone, so from the point of view of the automatic voice response device, it merely has the same function as a central office line. do not have. Therefore, even if there is only an R,T callback, the automatic voice response device only receives a 16Hz signal similar to the paging signal from the central office line, so the automatic voice response device receives the 6Hz signal due to the R,T callback.
calls cannot be distinguished from other incoming calls. Therefore,
When an automatic voice response device answers an R,T call, it is unable to provide the caller with a service suitable for the situation where the forwarding destination does not answer.

Therefore, proposals have been made to change the period and waveform of the calling signal depending on the type of call. In such a case,
Depending on the type of ringing signal, it is possible to distinguish between R and T callback calls and other calls.

However, after the automatic voice response device performs the transfer, the R,T
Until the callback is received, other transfers may occur, and in such a case, it is not possible to recognize which transfer destination the R and T callbacks are from. Therefore, it is not possible to provide appropriate services depending on the transfer destination.

Therefore, an object of the present invention is to provide a button telephone device having an automatic voice response device, in which when the automatic voice response device receives an R,T call back, an automatic voice transmits the fact that the R,T call back and the forwarding destination are sent to the automatic voice response device. The purpose is to enable the answering device to recognize the caller and provide appropriate services to the caller depending on the situation.

[Structure of the invention]

(Means for Solving the Problems) The present invention includes a main device having a plurality of terminals and a communication path switching means, and the main device can be equipped with an independent telephone interface circuit, and the independent vehicle interface circuit can be installed in the main device. In a button telephone device configured such that a ring transfer call can be made to a terminal from a terminal, and a ring transfer call is made back to a single telephone interface circuit if the terminal does not respond to the ring transfer call, the main device includes means for generating an MF multiplication signal. , means for storing the extension number of the terminal, and means for controlling the exchange means, the MF (No. 1 calling means and the extension number storage means), and the control means is configured to control the terminal called by the ring transfer call. the extension number stored in the storage means, and when the ring transfer call is called back, the MF signal generation means generates an MF multiplication signal indicating the extension number stored in the storage means, indicating the ring transfer call. To provide a button telephone device, characterized in that it is configured to send data to a single telephone interface route through a communication route switching means.

(Function) According to the above configuration, when the JLIL standalone telephone interface circuit is mounted on the main device and the visual name response device is connected to it, R and T callbacks are performed using the standalone telephone interface circuit. MF double signal indicating the R,T callback An MF double signal indicating the extension number to which the call is to be transferred is sent to the single telephone interface circuit through the call switching means.

Then, the automatic voice response device automatically responds to the R and T calls back and then receives the above-mentioned MF multiplied signal. 1.1 The dynamic voice response device can recognize from the received MF multiplication signal that this call is an R, T callback and the extension number of the forwarding destination, so it selects a service according to the recognition result. can be provided.

(Example) Examples will be explained below.

FIG. 1 shows the configuration of the main device in an embodiment of the key telephone device according to the present invention, and FIG. 2 shows the configuration of the automatic voice response device in this embodiment.

Referring to FIG. 1, the main device 1 includes a dedicated terminal interface circuit 31 to 3ms independent telephone interface circuit 5.
, outside line interface circuit 71~? n, sound source circuit 9, M
A P signal source circuit 11 and a switching circuit 13 for connecting communication paths between these circuits are also mounted. Furthermore, this main device 1
includes a ROM 15 for controlling the operations of the above circuits.
, a RAM 17, and a CPU 19. The CPU 19 is connected to the above-mentioned circuits via a control data bus 23.

Key telephones 251-25m are connected to the dedicated terminal interface circuits 31-3m, respectively, an automatic voice response device 27 is connected to the Chinese-German telephone interface circuit 5, and external lines 291-29 are connected to the outside line interface circuits 71-7o.
29n are connected to each other. For these interface circuits, a configuration similar to that of the previous one can be adopted.

The tone source circuit 9 stores various tones as described below, and selects and outputs a specific tone under the control of the CPU 19. MF signal source circuit 1] is a dial? It is possible to generate 16 kinds of MF multiplied signals indicating C numbers 1 to 101#, *, A, B, and C1D, respectively, and a specific MF multiplied signal is generated and output under the control of the CPU 19.

The CPU 19 controls the operation of this main device according to a control program stored in the ROIVfl 5 in advance. The feature of this control is that when calling back R and T, as will be described later.

Referring to FIG. 2, the automatic voice response device 27 includes a line interface circuit 31, an audio/MF signal control circuit 33, a hard disk device 35, and a disk control circuit 37. The line interface circuit 31, the audio/MF signal control circuit 33, and the hard disk device 35 are connected to the receiving and transmitting audio lines 39a, 39b, and the line interface circuit 31, the audio/MF signal control circuit 3
3 and the hard disk control circuit 37 are connected to the control signal bus 4.
Connected to 1. The disk control circuit 37 controls (≦
The disk device 35 can be controlled through the bus 41.

The four-wire interface circuit 31 is the main device] 111-telephone lines 43a, 43 from the German telephone interface circuit 5
A line control circuit 45 for capturing the telephone lines 43a, 43b and connecting them to the internal voice lines 39a, 39b detects a 16Hz calling signal from the telephone lines 4.3a, 43b. Incoming call detection circuit 4
7, and a dial/hooking output path 49 for transmitting a dial signal (the MF multiplied signal is a DP signal) and a hooking signal to the telephone lines 43a and 43b. The detection signal from the right turn detection circuit 47 is sent to the audio/M via the bus 41.
The signal is sent to the F signal control circuit 33.

The audio/MF signal control circuit 33 is connected to the receiving audio line 3.9.
an MF signal receiving circuit 51 that receives the MF double signal from a and sends its identification data to the bus 41; an extension number recognition circuit 53 that receives the identification data from the bus 41 and recognizes the extension number;
．． 8 (g detection 1) It includes a CPU 55 that controls the line-of-sight interface circuit 31 and the disk control circuit 37 based on various information such as the alarm code and extension number recognition results, a ROM 57 that stores a program for the control, and a RAM 59. There is.

The hard disk device 35 has a built-in hard disk and has a function of writing a voice message from the receiving voice line 39a to any location on the disk, or reading a voice message from any location on the disk and sending it to the transmitting voice line 39b. .

The disk control circuit 37 controls writing and reading operations of the hard disk device 35 under the control of the CPU 55.

Next, the operation of this embodiment will be explained.

For example, when there is an incoming call from the outside line 291, this is detected by the outside line interface circuit 71, and the j':1 call detection data is sent from the outside line interface circuit 71 to the outside line interface circuit 71, which recognizes the extension number of the forwarding destination from the dial data and stores it in the RAM 17. Write this to the extension number table provided in . This extension number table is as shown in FIG. 3, and has an area for storing an extension number (three digits in the illustrated example) for each of the outside lines 291 to 29n. In this case, the outside line is 29.
Since this is a case where an incoming call from 1 is transferred, the extension number is written in the area for outside line 291.

Next, the CPU 1.9 controls the dedicated terminal interface circuit (for example, 31) of the forwarding destination indicated by the above extension number to place it in a receiving state, and at the same time controls the sound source circuit 9 and the exchange circuit 13. , the calling tone from the sound source circuit 9 is sent to the dedicated terminal interface circuit 31 as the transfer destination.

As a result, a call is made on the transfer destination key telephone 251. Further, the CPU 19 controls the individual telephone interface circuit 5 to return it to the incoming call standby state.

When the call to the transfer destination is started in this way, the CPU
I9 reads the maximum number of calls corresponding to the outside line 291 from the number of calls table provided in the RAM 17. This number of calls table is as shown in Fig. 4, and a storage area is provided for each outside line 291 to 29nh4, and the maximum number of calls predetermined for outside line 4 is stored in each area. . When the CPU 19 reads the maximum number of calls for the outside line 291 from this table, it writes this into an area in the RAM 17 for the remaining number of calls.

Now, in response to the above call, the transfer destination button telephone 251
When the telephone 251 responds, the key telephone 251 and the outside line 291 are connected and the outside line transfer is completed.

On the other hand, while the key telephone 251 does not respond to the above-mentioned calls, the CPU 9 sends the RA
M] Subtract "1" from the remaining equal number of calls in 7. Then, when this remaining number of calls reaches "0", that is, if there is no response from the transfer destination even after waiting for the maximum number of calls, the CPUIQ controls the sound source circuit 9, switching circuit 13, and dedicated terminal interface circuit 31. Then, the transfer destination stops calling for 15 minutes and returns to the incoming call standby state.

6 Subsequently, the R,T callback operation is started.

That is, after returning the transfer destination to the incoming call standby state, the CPU 1.9 controls the single telephone interface 4-way 5 to place it in the incoming call state. As a result, the individual telephone interface circuit 5 sends a 16 Hz calling signal to the automatic voice response device 27, which is the transfer source. Automatic voice response device 2
7 automatically responds to this call as described above.

This automatic response is detected by the individual telephone interface circuit 5, and response detection data is sent to the CPU 19. C
When the PU 19 receives this data, it stores the 11 in the RAM 17.
The extension number of the transfer destination (that is, the key telephone 251) is read from the area for the outside line 291 in the line number table, and this is sent to the MF signal source circuit 11.
1 and switching circuit] 3, and transmits a series of MFt- numbers indicating a predetermined dial code (for example, B) and the above-mentioned extension number as shown in the fifth field from the MF signal circuit 1] to switching circuit] 3.
．． 11 is sent to the automatic voice response device 27 through the German telephone interface circuit 5.

The automatic voice response device 27 receives the MF signal (,a 1m
+j851 receives the series of MF signals and sends their recognition results to CPU55. The CPU 55 recognizes that it is an R, T callback based on the dial code B of first fl, and the extension number that follows is checked against the extension number stored in the RAM 5'3 to call the forwarding destination 1) j line. After confirming that the number is correct, the disk control circuit 37 is controlled to cause the hard disk drive 35 to send out an R, T call-back message prepared in advance corresponding to the extension number. This message may be used, for example, to inform the recipient that the recipient is not responding, and then perform a service such as recording the recipient's message or forwarding the message to another extension.
.

The content is such that you are requesting the other party to do something for you. This message is sent to the outside line 291 through the main device 1.

[Effect of the invention] As explained above, according to the present invention, r, 1 is
R and T calls to the handset interface circuit 1
1. +i says R, T call back! i: A series of MF double signals indicating the extension number of the destination. Since the signal is sent to the single telephone interface circuit through the voice communication path, when an automatic voice response device is connected to this single telephone interface circuit, The automatic voice response device can recognize the R, T callback and transfer destination from the series of MF multiplied signals, select an appropriate service, and provide it to the calling party.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the main device of an Ichijo example of the Botashift 1i talking device according to the present invention, and FIG. 2 shows the structure of the automatic voice response device connected to the main device of FIG. 1. Professional,
3 is a diagram showing the extension number table provided in the RAM of FIG. 1, FIG. 4 is a diagram showing the number of calls table provided in the RAM of FIG. 1, and FIG. This figure is a diagram showing a series of MF multiplied signals generated from the MF signal source circuit of FIG. 1 when calling back R and T. 1. Main device, 3... Dedicated terminal interface circuit, 5
・・Single telephone interface circuit, 7・Outside line i9 interface circuit, 9・・Sound source circuit, 11・MF (
+□ Signal source circuit, 13... Exchange circuit, 15... ROM, 1
7...RAM, 19...CPU, 21...control circuit,
25... Dedicated terminal, 27... Automatic voice response device, 2
9... Outer edge, 31... Line interface four paths, 33
...Audio/MF signal control circuit, 35...Hard disk device, 37...Disk control device, 45.Same line control circuit, 47...Incoming call detection circuit, 4...Dial/hooking sending circuit, 5], -MF signal receiving circuit, 53.
Extension number recognition circuit, 55...ci:'u, 57--ROM, 5'L-RAM.

Claims (1)

[Scope of Claims] 1. A main device having a plurality of terminals and a communication path switching means, wherein the main device can be equipped with an individual telephone interface circuit, and a ring is connected to the terminal from the individual telephone interface circuit. In a button telephone device configured to be able to make a transfer call and to make a ring transfer call back to the single telephone interface circuit if the terminal does not respond to the ring transfer call, the main device includes means for generating an MF signal. and means for storing the extension number of the terminal; and means for controlling the switching means, generating means, and storage means, and the control means stores the extension number of the terminal called by the ring transfer call. When the ring transfer is called back, the MF signal generation means generates an MF signal indicating the ring transfer callback and an MF signal indicating the extension number stored in the storage means, and the MF signal is stored on the communication path. A button telephone device, characterized in that it is configured to send to said single telephone interface circuit through switching means.