JPH07162922A - Key telephone system with automatic incoming call responding function - Google Patents

Abstract

PURPOSE:To simplify and miniaturize the system and to lower the price by unnecessitating any DTMF signal by connecting a voice responding device provided with a means for transmitting a prescribed voice message in response to incoming call from the main unit of a key telephone. CONSTITUTION:When the incoming call arrives at outside lines OL1-OLn, first of all, incoming call is performed to an attendant board terminal ATD. When the attendant board terminal ATD does not respond to this incoming call within prescribed incoming call monitoring time because of any reason such as under incoming call responding, for example, instead of it, incoming call is performed to an announce device AND. Afterwards, the call is connected to an incoming call outside line OL, and a prescribed announce message is transmitted from this announce device AND to a caller. After the transmission is completed, incoming call is performed to the attendant board terminal ATD again. Therefore, automatic incoming call response can be performed without necessity for the caller to transmit the DTMF signal. Thus, any detection circuit for the DTMF signal is unnecessitated, circuit configuration is simplified and miniaturized, and the price can be lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a key telephone device having an automatic incoming call answering function.

[0002]

2. Description of the Related Art Conventionally, it has been considered that a key telephone device is provided with an automatic incoming call answering function for an incoming call to an outside line, and one of them is a system using an auto attendant device.

In a system using the auto attendant device, for example, when an incoming call to an outside line arrives, the outside line is connected to the auto attendant device, and the extension line corresponding to a department desired by a caller from this device to the outside line. Send out a guidance message to prompt you to enter a phone number.
When the caller sends an extension telephone number consisting of a DTMF signal by dialing, the DTMF signal is detected and an incoming call is made to the telephone terminal of the extension corresponding to the extension telephone number. When the telephone terminal responds, the telephone terminal is connected to the outside line of the incoming call so that the telephone call can be made thereafter.

[0004]

However, such a conventionally conceived system requires a DTMF detection circuit for detecting an extension telephone number composed of a DTMF signal sent from a calling party. In general, the DTMF detection circuit has a problem that the circuit configuration becomes complicated and large, and the cost increases because the circuit configuration is complicated and tends to be large and expensive. This problem is extremely unfavorable especially for a key telephone device which is required to be small and inexpensive.

If the caller's telephone is not provided with a function for transmitting a DTMF signal, or if the caller is not provided with the operation even if provided, the caller receives an incoming call. There is also a problem that the automatic call answering service of the key telephone device cannot be received.

The present invention has been made in view of the above circumstances, and its purpose is to eliminate the need for a DTMF signal, thereby simplifying the size and cost of the device and selecting a calling party. An object of the present invention is to provide a key telephone device that enables automatic incoming call response.

Another object of the present invention is to respond to a large number of incoming calls to an outside line by using a small number of voice response devices, thereby making it possible to reduce the size and cost of the device automatically. It is to provide a key telephone device provided with.

[0008]

To achieve the above object, a first invention is a means for transmitting a predetermined voice message to an extension of a key telephone main unit in response to an incoming call from the key telephone main unit. And a specific terminal incoming call processing means for making an incoming call to a specific telephone terminal in response to an outside line call to the key telephone main device, and the specific telephone by the specific terminal incoming call processing means. And a voice response incoming call processing means and a voice response connection control means. When the time value measured by the time measuring means exceeds a preset time, the voice response incoming call processing means makes an incoming call to the voice response device, and the voice response is made to the incoming call made by the voice response incoming call processing means. When the device responds, the voice response connection control means connects the voice response device and the external line receiving the incoming call to send the voice message to the external line.

According to a first aspect of the present invention, in the voice response incoming call processing means, when a specific telephone terminal is busy for an incoming call by the specific terminal incoming call processing means, in response to detection of the busy status. It is characterized by making an incoming call to the voice response device.

On the other hand, in order to achieve the above-mentioned other objects, the second
According to the invention of claim 1, when a plurality of voice response devices are connected to the key telephone main device and the number of voice response devices is smaller than the number of external lines and an incoming call arrives from an external line, the voice response incoming call processing means determines whether the plurality of voice response devices are available. Are sequentially determined, and an incoming call is made to the voice response device determined to be empty. When the voice response device responds to the incoming call, the voice response connection control means connects the voice response device and the external line receiving the incoming call to send a voice message to the external line. After the end of message transmission is detected, the specific terminal incoming call processing means performs incoming call processing to a specific telephone terminal.

The second aspect of the invention is also characterized in that the voice response incoming call processing means repeatedly determines whether or not a plurality of voice response devices are available within a preset detection time until an idle voice response device is detected. I am trying.

[0012]

As a result, according to the first aspect of the present invention, when an outside line arrives, an incoming call is first made to a specific telephone terminal such as a reception terminal, and the reason why the specific telephone terminal is absent, etc. If you do not respond within a predetermined time,
Instead, the voice response device is called and connected to the incoming outside line, and a predetermined voice message is sent from the voice response device to the caller. That is, the automatic incoming call response is performed without using the DTMF signal. Therefore, the device has D
The TMF signal detection circuit is not necessary, which enables the circuit configuration of the device to be simplified and downsized and the cost to be reduced. Also, the caller does not need to use a telephone terminal having a DTMF signal transmission circuit, and even if he / she is not accustomed to the operation of transmitting the extension telephone number, he / she can receive the service by the automatic incoming call response. That is, an automatic incoming call response can be made to an incoming call from any caller.

When a specific telephone terminal is busy for an incoming call, the incoming call is made to the voice response device regardless of the time value of the time measuring means. Therefore, it is possible to send a voice message to the caller not only when the person who handles the specific terminal is temporarily away from the seat, but also when the person is busy, and Can immediately send a voice message without waiting for a predetermined time. For this reason, it becomes possible to make a clearer incoming call response with good responsiveness to the calling party.

On the other hand, according to the second aspect of the invention, when a voice message is transmitted, it is determined whether or not a plurality of voice response devices are available, and an available voice response device is selected to make an incoming call. Therefore, it is possible to efficiently use a smaller number of voice response devices than the number of external lines, and it is possible to reduce the number of voice response devices installed as compared with the case where a voice response device is provided for each external line. Thus, the configuration of the key telephone device can be further simplified and downsized. In addition, the use efficiency of the voice response device can be improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 is a circuit block diagram showing the configuration of a key telephone device according to the first embodiment of the present invention, in which A is a key telephone main unit and DKT is also a key telephone device. Indicates a digital telephone terminal, TEL indicates a standard telephone terminal, and ATD indicates a relay terminal.

The key telephone main unit A includes a control unit 10
The control unit 10 is provided with an external line interface unit (PCOU) 21 and a digital / standard terminal interface unit (RDSU) 22 via a speech highway SHW and a data highway DHW.
And a digital terminal interface unit (PDK
U) 23 and standard terminal interface unit (PST)
U) 24 and the relay stand interface unit (PAT)
U) 25 are respectively connected.

First, the outside line interface unit 21 accommodates a plurality of outside line interfaces, and these outside line interfaces are connected to a plurality of outside lines OL1 to OLn including subscriber lines of a public network or extension lines of a private branch exchange. It Each outside line interface is an outside line OL
Various interface operations for 1 to OLn are performed.
The contents are, for example, the detection of an incoming signal coming from the network via the outside lines OL1 to OLn, and the outside line OL accompanying the transmission.
The main ones are capturing 1 to OLn and holding the captured outside line.

The digital / standard terminal interface unit 22 has a plurality of digital / standard terminal ports to which digital telephone terminals and analog standard telephone terminals are selectively connected. Note that FIG.
Shows that the digital telephone terminal DKT is connected to one of the ports. The digital / standard terminal interface unit 22 performs terminal interface operations such as sending an incoming signal and a display signal to the telephone terminal and detecting an outgoing signal and a dial signal sent from the telephone terminal for each port.

Digital terminal interface unit 2
3 has a plurality of digital terminal ports to which a digital telephone terminal DKT is connected. The digital terminal interface unit 23 performs various interface operations with respect to the digital terminal for each port.

The standard terminal interface unit 24 is
It has a plurality of standard terminal ports, and these standard terminal ports include a standard telephone terminal TEL and an announcement device A.
ND is connected. FIG. 2 shows the configuration of one port in the standard terminal interface unit 23. That is, each port has an interface circuit (SL
T) 41, a ringer generator 42, and a changeover switch 43. The interface circuit 41 performs an interface operation between the data highway DHW and the speech highway SHW and the analog standard line. The ringer generator 42 generates an incoming signal (20 Hz). The changeover switch 43 connects the ringer generator 42 to the line according to a changeover signal output from the interface circuit 41 when an incoming call is made.

The announcement device AND has a memory or a tape recorder for storing a voice message in addition to a function generally used as a standard telephone terminal. In this voice message memory or tape recorder, a predetermined voice message for notifying the caller of the state of his / her own device is recorded.

A relay stand terminal ATD is connected to the relay stand interface unit 25. The relay stand interface unit 25 includes a relay stand terminal ATD and a control unit AT.
Relay control data is exchanged with D.

By the way, the control unit 10 is a main CP.
It has two CPUs, a U11 and a sub CPU 12. These CPUs 11 and 12 have a program R for storing a control program and a part of control data.
OM13 and R for temporarily storing the rest of the control data
The AM 14 and the backup RAM 15 backed up by the power supply are respectively connected to the bus, and further, the clock circuit 16 for performing the time counting operation and the tone generating ROM 17
, Time switch 18, busy tone detector 19
And the interrupt generation circuit 20 are connected.

Of these, the backup RAM 15 is provided with a customer data area used for controlling outgoing and incoming calls. In this customer data area, a station arrival setting area, an announcement transfer port setting area, and a soft timer area are set. In the local arrival setting area, for example, as shown in FIG. 3, data indicating a relationship between each terminal port and each outside line, that is, data indicating to which terminal the ring tone is transmitted when an incoming call arrives at the outside line is stored. In the announcement diversion port setting area, data representing the relationship between the announcement device AND and the port number of the standard terminal interface unit to which this device is connected is stored. FIG. 4 shows an example thereof. In this example, the announcement device AND is connected to the port “005” and the other ports are in an empty state. The soft timer area is provided with an area for setting an incoming call monitoring time corresponding to each of the outside lines OL1 to OLn, as shown in FIG. 5, for example, when an incoming call is made to the relay terminal ATD. A preset incoming call monitoring time is set.

The time switch 18 is the main CPU 11
According to the instruction of 1., the plurality of outside line ports and each terminal port and each terminal port are selectively connected. The interrupt circuit 20 uses a soft timer area provided in the backup RAM to measure a preset time.

The main CPU 11 has an announcement device in addition to an ordinary button telephone control function such as an outgoing call process associated with a call request from each terminal, a normal incoming call process associated with an incoming call from an outside line, and a transfer process between terminals. An automatic incoming call response control means using AND is provided. This automatic incoming call response control means, when an external line incoming occurs, first calls the incoming call to the relay stand terminal ATD. Then, when the relay terminal ATD does not respond even after a lapse of a certain time, an incoming call is made to the announcement device AND to connect the announcement device AND and the external line of the incoming call, whereby a predetermined announcement message is transmitted. The message is transmitted to an outside line, and after the transmission of this announcement message is finished, the relay terminal AT
It controls to make an incoming call to D.

Next, the automatic incoming call answering operation of the device configured as described above will be described with reference to the flowchart shown in FIG. When an incoming signal arrives at the outside line OL1, this incoming signal is detected by an incoming call detector in the outside line interface unit 21, and the detected data is detected by the data highway DH.
After being transferred to the sub CPU 12 via E, the main C is transferred from the sub CPU 12 via the bidirectional RAM 12a.
It is transmitted to PU11.

At this time, the main CPU 11 executes step 6
The arrival of an incoming call from an outside line is monitored at a, and when the incoming data is transmitted, the process proceeds to step 6b where the incoming process for the relay terminal ATD is performed as follows. That is, first, the incoming call monitoring time preset in the soft timer area of the backup RAM 15, for example, "16 seconds".
Write. Then, the tone generating ROM 17 and the relay stand terminal interface unit 25 are connected to each other via the speech highway SHW.
The incoming tone signal generated from M17 is used as an AT terminal AT.
Let D send it. At the same time, the incoming call display data is sent to all terminals, which causes the corresponding outside line LEDs of all terminals to perform incoming call display.

During the incoming call period of the relay terminal ATD, the main CPU 11 monitors the progress of the incoming call monitoring time (16 seconds) in step 6d,
The response monitoring of the relay stand terminal ATD is performed at c. Note that the progress of the incoming call time is monitored by using an interrupt signal generated from the interrupt generation circuit 20 once per second, and the stored value in the soft timer area is decremented every time this interrupt signal is generated ( -1), and it is performed by determining whether the stored value of the soft timer area has become "0". Further, this monitoring operation is stopped when the response of the relay stand terminal ATD is detected.

In this state, it is assumed that the operator of the relay stand terminal ATD responds off-hook during the incoming call monitoring time (16 seconds). Then, the main CPU 11
Moves to step 6j to clear the soft timer here, and in step 6k connects the relay station terminal ATD and the outside line OL1 by the time switch 18, whereby the caller and the person handling the relay station terminal ATD are handled. Allows calls to and from.

On the other hand, suppose that the operator of the relay stand terminal ATD is now responding to another incoming call, so that the incoming call cannot be answered within the incoming call monitoring time (16 seconds). Then, the main CPU 11 shifts to step 6e after detecting the timeout of the soft timer in step 6d, and executes the announcement connection processing here.

That is, the main CPU 11 first stops the supply of the incoming tone signal to the relay stand terminal ATD, and then disconnects the relay stand terminal ATD from the outside line OL1. At this time, the DC loop of the outside line OL1 is held.
Next, the announcement diversion port setting area of the backup RAM 15 is accessed to recognize the terminal port to which the announcement device AND is connected, and give an incoming call instruction to this terminal port. Therefore, the changeover switch 43 is switched to connect the ringer generator 42 to the announcer AND, and the incoming signal generated from the ringer generator 42 is supplied to the announcer AND. That is, the announcement device AND is called. Also the main CPU
Reference numeral 11 supplies display data to all terminals to light the outside line LED, thereby displaying that the outside line OL1 is in use.

When the incoming signal arrives, the announcement device AND automatically responds. Then, the announcement message previously recorded in the message memory or the recording tape is reproduced and transmitted. On the other hand, the main CPU 11
When the response of the announcement device AND is detected in step 6f, the process proceeds to step 6g, where the announcement device AND and the outside line OL1 are transmitted via the time switch 18.
It connects with and forms a communication path. Therefore, the announcement message transmitted from the announcement device AND is transmitted to the outside line OL1 thereafter.

[0034] The content of the announcement message is, for example, "Yes. This is a XX company. The telephone is busy right now, so please wait for a while."
Is used.

Then, it is assumed that the sending of the announce message is completed and the announce device AND goes on hook.
Then, the main CPU 11 detects this on-hook in step 6h and moves to step 6i. In step 6i, the recalling process of the relay terminal ATD is performed. That is, when the main CPU 11 detects the on-hook of the announcement device AND, the incoming outside line OL1
The announcement device AND is disconnected from the incoming outside line OL1 while maintaining the DC loop of. Then, the local arrival setting data area of the backup RAM 15 is accessed again to search for the port to which the relay stand terminal ATD is connected, and the tone generation ROM 1 is sent to the relay stand terminal ATD via this port.
7 provides the incoming tone signal. That is, the relay terminal ATD is called again.

In response to this, it is assumed that the person who handles the relay stand terminal ATD responds by going off-hook. Then, the main C
PU11 is the port of this relay stand terminal ATD and the outside line OL1.
And are connected via the time switch 18 to form a call path, and thereafter, a call can be made between the person who handles the relay stand terminal ATD and the caller through this call path.

As described above, in this embodiment, the outside lines OL1 to O are arranged.
When an incoming call arrives at Ln, an incoming call is first made to the relay stand terminal ATD, and if the relay stand terminal ATD does not respond to this incoming call within a predetermined incoming call monitoring time due to, for example, answering an incoming call, the incoming call is taken instead. After an incoming call is made to the announcement device AND, the announcement device AND is connected to the incoming outside line OL, and a predetermined announcement message is sent from the announcement device AND to the caller. Then, after the transmission of the announce message is completed, the incoming call is made again to the relay stand terminal ATD.

Therefore, in this embodiment, the calling party is D
An automatic incoming call response can be performed without sending a TMF signal, which eliminates the need for a DTMF signal detection circuit and enables the circuit configuration of the device to be simplified and downsized. Also, the caller does not need to use the telephone terminal having the DTMF signal transmission circuit, and D
Even if the user is not accustomed to the operation of transmitting the extension telephone number composed of the TMF signal, it becomes possible to receive the service by the automatic incoming call response. That is, an automatic incoming call response can be made to an incoming call from any caller.

(Second Embodiment) In this embodiment, a plurality of announcement devices AND1 to AND are provided in the key telephone main device AA.
No. 4 is connected, the vacancy of these announcement devices AND1 to AND4 is sequentially determined according to an incoming call from an outside line, an incoming call is made to the announcement device determined to be vacant, and an announcement message is sent from this announcement device. It was done like this.

FIG. 7 is a circuit block diagram showing the configuration of the key telephone device according to this embodiment. In the figure, the same parts as those in FIG. 1 are designated by the same reference numerals and detailed description thereof will be omitted.

At the plurality of terminal ports provided in the standard terminal interface unit 24 of the key telephone main unit AA, a plurality of announcement units A (four units in this embodiment) are used.
ND1 to AND4 are connected. Along with this, in the announcement diversion port setting area in the backup RAM 150, for example, as shown in FIG. 8, terminal port numbers are stored as announcement diversion ports in association with the announcement devices AND1 to AND4.

On the other hand, the main CPU 110 has an automatic incoming call response control means using the plurality of announcement devices AND1 to AND4. The automatic incoming call answering control means sequentially determines the vacancy of the terminal ports to which the plurality of announcement devices AND1 to AND4 are connected when an external call arrives, and when the vacant terminal port is found, this vacancy is determined. This is to make an incoming call to the announcement device corresponding to the terminal port of and to send an announcement message from the announcement device to the incoming outside line OL.

Next, the automatic incoming call response control operation of the device configured as described above will be described with reference to the flowcharts shown in FIGS. 9 and 10. Now, assume that an incoming signal arrives at the outside line OL1, for example. Then, this incoming signal is detected by the incoming call detector in the outside line interface unit 21, and the detected data is transferred to the sub CPU 12 via the data highway DHW, and then this sub CPU
12 through the bidirectional RAM 12a to the main CPU 11
Transmitted to 0.

At this time, the main CPU 110 is observing the arrival of an external line incoming in step 9a, and when the incoming data is transmitted, the announcement devices AND1 to AND4 are provided.
The vacancy judgment of is executed as follows.

That is, first, in step 9b, the announcement transfer port setting area (FIG. 8) of the backup RAM 15 is accessed to access the first announcement device AN.
The terminal port "005" to which D1 is connected is searched. Then, the state of the terminal port "005" to which the first announcement device AND1 is connected is detected, and thereby it is determined whether or not this terminal port "005" is free. If the result of this determination is that this terminal port "005" is in use, then the processing moves to step 9c. Then, in this step 9c, this time, the terminal port "006" to which the second announcement device AND2 is connected is searched to detect the state, and this terminal port "0" is detected.
06 ”is empty or not. Thereafter, similarly, in steps 9d and 9e, vacant judgments of the terminal ports "007" and "008" corresponding to the third and fourth announcement devices AND3 and AND4 are sequentially performed until a vacant terminal port is found.

Now, it is assumed that, for example, one of the second announcement devices AND2 is determined to be vacant by the vacancy determination. Then, the main CPU 110 moves to step 9i shown in FIG. 10 and executes the incoming call process for the standby announcement device AND2.

That is, the main CPU 110 first gives an incoming call instruction to the corresponding terminal port "006" of the standard terminal interface unit 24. Therefore, the incoming signal is supplied from the terminal port "006" to the second announcement device AND2. That is, the second announcement device AND2 is called. Also at this time the main CP
U110 supplies the display data to all the terminals to light the outside line LED, thereby displaying that the outside line OL1 is in use.

When the incoming signal arrives, the second announcer AND2 automatically responds. Then, the announcement message previously recorded in the message memory or the recording tape is reproduced and transmitted. On the other hand, the main CP
When the U110 detects the response of the second announcement device AND2 in step 9j, the process proceeds to step 9k, in which the second announcement device AND2 and the incoming line OL1 are connected via the time switch 18. Form a communication path. Therefore, after that, the announcement message sent from the second announcement device AND2 is the outside line O
It is sent to L1.

The contents of the announcement message are, for example, "Yes. This is a company of XX. I am currently on the line, so please wait for a while."
Is used.

Then, it is assumed that the sending of the announce message is completed and the second announce device AND2 goes on hook. Then, the main CPU 110 detects this on-hook in step 9l and proceeds to step 9m. In this step 9m, incoming call processing of the relay stand terminal ATD is performed.

That is, the main CPU 110 is the second CPU
When the on-hook of the announcement device AND2 of is detected,
The second announcement device AND2 is disconnected from the incoming external line OL1 while maintaining the DC loop of the incoming external line OL1. Then, the local arrival setting data area of the backup RAM 15 is accessed to search for a port to which the relay stand terminal ATD is connected, and an incoming tone signal is supplied from the tone generating ROM 17 to the relay stand terminal ATD via this port. That is, the incoming call is made to the relay stand terminal ATD.

In response to this, it is assumed that the person who handles the relay stand terminal ATD responds by going off-hook. Then, the main C
The PU 110 is connected to the port of the relay terminal ATD and the outside line OL.
1 is connected via the time switch 18 to form a call path, and thereafter, a call can be made between the operator of the relay stand terminal ATD and the caller via the call path.

On the other hand, it is assumed that it is determined that all the ports are in use as a result of the vacancy determination of each announcement diversion port in steps 9b to 9e. In this case the main CPU1
Step 10 shifts from step 9e to step 9f, where a predetermined vacancy determination time (for example, 8 seconds) is set in the area corresponding to the incoming outside line OL1 of the soft timer area in the backup RAM 15. And then, step 9
While monitoring the timeout of this soft timer with g,
The vacant judgment of each announcement diversion port by the above steps 9b to 9e is repeated. Note that the soft timer time-out decrements (-1) the set value of the soft timer area every time the interrupt generation circuit 20 generates an interrupt signal once per second, and the set value of the soft timer area is decreased. Is performed by determining whether or not the value has become "0".

When it is detected that one of the announcement diversion ports is vacant in the vacancy determination in steps 9b to 9e during the period (8 seconds) until the soft timer times out, the main CPU1
10 shifts to step 9i shown in FIG. 10, and thereafter executes the incoming call processing for the announcement devices AND1 to AND4 described above.

On the other hand, it is assumed that no announcement diversion port is available within the period (8 seconds) until the soft timer times out. In this case the main CPU
The 110 judges that the response automatic response using the announcement device is impossible, and proceeds to step 9h to execute the incoming call process for the relay stand terminal ATD.

As described above, in the present embodiment, when an external line call arrives, a plurality of announcement devices AND1 to AN are provided.
The vacancy of D4 is sequentially determined, an incoming call is made to the announcement device determined to be vacant, and the announcement message is sent to the incoming call outside line. Therefore, it is possible to efficiently use a smaller number of voice response devices than the number of outside lines, and it is possible to reduce the number of announcement devices installed, for example, compared to the case where an outside announcement device is provided for each outside line. The configuration of the device can be further simplified and downsized. Moreover, the use efficiency of the announcement device can be improved.

The present invention is not limited to the above embodiments. For example, in the first embodiment, the relay stand terminal A
Incoming call to TD for a predetermined period (16 seconds)
Even if the relay terminal ATD does not go off-hook after a certain period of time, the incoming call is made to the announcement device AND. However, it is configured to judge that all the reception lines of the relay terminal ATD are busy and, if busy, move to the incoming call of the announcement device AND without waiting for the predetermined period. You may. This makes it possible to send an immediate announcement message to the calling party without waiting for a long time.

In addition, in the second embodiment, when an external line call arrives, first, the availability of each of the announcement devices AND1 to AND4 is determined, the incoming call is made to the idle announce device, and after the announcement message is sent, the relay stand is completed. The incoming call to the terminal ATD is made. However, when an incoming call from an outside line arrives, first, the relay terminal ATD
Incoming call is made to the relay stand terminal A within a certain period.
Multiple announcement devices AND when TD does not respond
It is also possible to determine the availability of 1 to AND4, display the incoming call to the announcement device determined to be available, and send the announcement message to the incoming call outside line. In this way, when the reception process in the relay stand terminal ATD is relatively idle, the relay stand terminal ATD responds to an incoming call.
Can immediately respond, which can enhance the serviceability to the caller.

Furthermore, in each of the above embodiments, the case where the relay stand terminal ATD is used as the specific terminal has been described as an example, but a predetermined digital telephone terminal or standard telephone terminal may be used as the specific terminal.

In addition, the control procedure and the control contents of the automatic incoming call answer control, the configuration and the number of the announcement device, the contents of the announcement message, the circuit configuration of the key telephone main device, etc. are also within the scope of the present invention. Various modifications can be implemented.

[0061]

As described in detail above, the first aspect of the present invention is a voice equipped with a means for transmitting a predetermined voice message to an extension of a key telephone main unit in response to an incoming call from the key telephone main unit. A specific terminal incoming call processing means for connecting an answering device to the key telephone main device for calling an incoming call to a specific telephone terminal in response to an external call, and an incoming call for the specific telephone terminal by the specific terminal incoming call processing means. It comprises a time measuring means for measuring time, and further comprises a voice response incoming call processing means and a voice response connection control means.
When the time value measured by the time measuring means exceeds a preset time, the voice response incoming call processing means makes an incoming call to the voice response device, and the voice response is made to the incoming call made by the voice response incoming call processing means. When the device responds, the voice response connection control means connects between the voice response device and the outside line receiving the incoming call so that the voice message is transmitted to the outside line.

Therefore, according to the first invention, the DTMF is
It is possible to eliminate the need for signals, thereby making it possible to provide a key telephone device which is simple in size and cost, and which enables automatic answering of incoming calls regardless of the calling party.

On the other hand, according to the second aspect of the present invention, the key telephone main unit is connected with a plurality of voice response units which are smaller in number than the number of outside lines,
When an incoming call arrives from an outside line, the voice response incoming call processing means sequentially determines the availability of the plurality of voice response devices, and the incoming call is made to the voice response device determined to be available. When the voice response device responds to the incoming call, the voice response connection control means connects the voice response device and the external line receiving the incoming call to send a voice message to the external line. After the end of message transmission is detected, the specific terminal incoming call processing means performs the incoming call processing to the specific telephone terminal.

Therefore, according to the second aspect of the invention, it is possible to handle a large number of incoming calls to the outside line by using only a small number of voice response devices, which can simplify the size and cost of the device automatically. A key telephone device having an incoming call answering function can be provided.

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing a configuration of a key telephone device according to a first embodiment of the present invention.

FIG. 2 is a circuit block diagram showing a partial configuration of a standard terminal interface unit of the key telephone device shown in FIG.

FIG. 3 is a backup R of the key telephone device shown in FIG.
The figure which shows the structure of the local arrival setting data area provided in AM.

4 is a backup R of the key telephone device shown in FIG.
The figure which shows the structure of the announcement conversion port setting area provided in AM.

FIG. 5 is a backup R of the key telephone device shown in FIG.
The figure which shows the structure of the soft timer area provided in AM.

6 is a flowchart showing a control procedure and control contents of automatic incoming call response control by the main CPU of the key telephone device shown in FIG.

FIG. 7 is a circuit block diagram showing a configuration of a key telephone device according to a second embodiment of the present invention.

FIG. 8 is a backup R of the key telephone device shown in FIG.
The figure which shows the structure of the announcement conversion port setting area provided in AM.

9 is a flowchart showing a control procedure of automatic incoming call response control by the main CPU of the key telephone device shown in FIG. 7 and a first half of control contents.

FIG. 10 is a main CPU of the button telephone device shown in FIG.
6 is a flowchart showing the control procedure of the automatic incoming call answering control and the latter half of the control content.

[Explanation of symbols]

A, AA ... Button telephone main device OL1-OLn ... Outer line ATD ... Relay stand terminal AND, AND1-AND4 ... Announcement device DKT ... Digital telephone terminal TEL ... Standard telephone terminal SHE ... Speech highway DHW ... Data highway 10, 100 ... Control unit 11, 110 ... Main CPU 12 ... Sub CPU 12a ... Bidirectional RAM 13 ... Program ROM 14 ... Data RAM 15 ... Backup RAM 16 ... Clock circuit 17 ... Tone generation ROM 18 ... Time switch 19 ... Busy tone detector 20 ... Interrupt Generation circuit 21 ... External line interface unit (PCOU) 22 ... Digital / standard terminal interface unit (RDSU) 23 ... Digital terminal interface unit (PDK)
U) 24 ... Standard terminal interface unit (PSTU) 25 ... Repeater stand interface unit (PATU) 41 ... Interface circuit 42 ... Ringer generator 43 ... Changeover switch

Claims (4)

[Claims] 1. A key telephone main unit which is connected to an outside line and accommodates a plurality of extensions to which telephone terminals are respectively connected, and which is connected to the key telephone main unit and responds to an incoming call from the key telephone main unit. And a voice response device having means for transmitting a predetermined voice message, and the key telephone main device is a specific terminal for making an incoming call to a specific telephone terminal in response to an incoming call from the outside line. An incoming call processing means, a timing means for timing the incoming call time to the specific telephone terminal by the specific terminal incoming call processing means, and the voice response when the timed value by the timing means exceeds a preset time. Voice response incoming call processing means for making an incoming call to the device, and the voice response device responding to the incoming call by the voice response incoming call processing means. In this case, the automatic response to call is provided with a voice response connection control means for connecting between the voice response device and the external line receiving the incoming call and transmitting the voice message to the external line. Button telephone device with functions. 2. When the specific telephone terminal is busy for the incoming call by the specific terminal incoming call processing means, the voice response incoming call processing means responds to the fact that the busy status is detected.
2. A key telephone device having an automatic incoming call answering function according to claim 1, wherein an incoming call is made to the voice answering device. 3. A key telephone main unit which is connected to a plurality of external lines and accommodates a plurality of extensions to which telephone terminals are respectively connected, and an incoming call from the key telephone main unit which is connected to the key telephone main unit. And a plurality of voice response devices, the number of which is less than the number of outside lines, and the key telephone main device is provided with a means for transmitting a predetermined voice message in response to the incoming call from the outside line. A voice response incoming call processing means for sequentially determining the availability of the plurality of voice response devices and selectively calling an incoming call to the voice response apparatus determined to be free; and an incoming call by the voice response incoming call processing means. When the voice response device responds to a call, a voice response for connecting the voice response device and the external line receiving the incoming call to send the voice message to the external line An automatic incoming call answering function comprising: a continuation control means; and a specific terminal incoming call processing means for performing incoming call processing to a specific telephone terminal after detecting the end of sending of a voice message by the voice answering device. Button telephone device equipped. 4. The voice response incoming call processing means repeats vacancy judgment of a plurality of voice response devices within a preset detection time until a vacant voice response device is detected. A button telephone device having the automatic incoming call answering function described in 1.