JPH10112750A - Cordless telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the convenience of a cordless telephone system by immediately sending a calling party a notice that incoming call response can not be made. SOLUTION: When a cordless key telephone system 1 can not receive a state notification signal which is periodically sent from cordless slave sets 2a to 2c, the system 1 stores out of range information which shows that incoming call response can not be made in the slave sets 2a to 2c by the receiving. When there is an incoming call from station lines, the system 1 immediately notifies a calling party that the slave sets 2a to 2c can not respond to the incoming call, based on the storage. Also, at the time of an incoming call when the system 1 stores the out of range information, it immediately sends a calling party synthetic voice data or a busy tone which shows that incoming response can not be made. Or it immediately makes extension transfer or line wire transfer. Furthermore, at the time of the setting of an automatic answering telephone mode, it immediately sends a calling part synthetic voice data and also quickly records the business from the caller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone apparatus in which a cordless key telephone (master) accommodates a plurality of office lines and a plurality of cordless slaves and performs incoming and outgoing calls.

[0002]

2. Description of the Related Art Conventionally, this kind of cordless telephone apparatus has been provided with various functions. For example, a cordless handset is called in response to an incoming call, and a certain time is measured.
After the elapse of the predetermined time, the calling party is notified that it cannot respond to the incoming call. Also, the fact that the cordless handset cannot respond to an incoming call is set from the cordless handset to the cordless main unit, or the cordless main unit itself,
By performing the setting, the call destination is notified that the call cannot be answered.

As a conventional example having such a function, Japanese Patent Application Laid-Open No. Hei 6-177981 entitled "Received Telephone Number Display System" is known. In the prior art of this publication, the telephone number of a telephone that cannot respond to an incoming call is displayed on a non-receiving telephone. The proxy response is performed based on this display, so that appropriate response to the proxy response, that is, invalid calls can be reduced.

[0004]

However, it is considered that the above-mentioned conventional cordless telephone apparatus is inconvenient in use. That is, when the cordless main device transmits an incoming signal to the cordless child device for each incoming call, and no incoming response signal is transmitted from this cordless child device,
The destination of the call cannot be answered, for example, a busy signal is sent to the call destination.

In this case, the cordless main unit does not immediately determine that the cordless handset is out of the service area of the wireless line or that it cannot respond to an incoming call due to power off or the like. That is, if no transmission of the incoming response signal from the cordless handset does not elapse for a few seconds, the cordless main unit does not recognize that the cordless handset cannot respond to the incoming call. For this reason, there is a disadvantage that the notification of the inability to respond to the incoming call is delayed to the call destination, which causes inconvenience in use.

[0006] The present invention is to solve such problems in the prior art, in which the cordless main unit immediately determines that the incoming call cannot be answered by the cordless handset, and the incoming call cannot be answered to the call destination. It is an object of the present invention to provide a cordless telephone device in which the various notifications described above are immediately sent to improve the convenience of use.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a station line is accommodated, incoming call processing,
In a cordless telephone device including a cordless button telephone device that performs outgoing call processing, external line transfer or internal line transfer, and a cordless child device that is connected to the cordless button telephone device via a wireless line, a cordless telephone device transmits a state notification signal transmitted by the cordless child device. When a cordless button telephone cannot receive a call, the cordless button telephone stores that it cannot respond to an incoming call from the office line, and based on this memory, the cordless handset immediately receives an incoming call from the office line The cordless button telephone device notifies the call destination of the inability to respond to the call.

According to a second aspect of the present invention, there is provided a cordless telephone apparatus comprising: a plurality of line circuits respectively connected to a plurality of office lines for processing incoming and outgoing calls; A switch circuit for switching connection of outgoing call, external line transfer or extension transfer, a plurality of extension circuits connected to the switch circuit to process respective incoming and outgoing calls to a plurality of cordless handsets, and connected to the extension circuit A wireless transmission / reception circuit that performs wireless transmission / reception of incoming and outgoing calls through a wireless line with the cordless handset, and information on a communicable area when a status notification signal transmitted by the cordless handset can be received from the wireless transmission / reception circuit, or reception within a predetermined time. An information storage memory for storing out-of-service information when failed, a timer circuit for measuring a fixed time, a local line circuit, an extension circuit,
A control circuit controls a wireless transmission / reception circuit and a timer circuit to control incoming and outgoing calls, and determines whether a status notification signal transmitted by the cordless handset has been received within a predetermined time.

A cordless telephone apparatus according to claim 3, wherein the cordless handset wirelessly transmits / receives incoming / outgoing calls and wirelessly transmits a status notification signal to / from the cordless handset through a wireless line with the cordless button telephone apparatus; A telephone circuit that outputs a transmission signal and a reception signal and performs sidetone processing; a transmission and reception microphone and a speaker connected to the telephone circuit; and a state notification signal transmitted by the wireless transmission and reception circuit. A timer circuit that performs time measurement for transmission at each time, a control unit that controls a wireless transmission / reception circuit, a telephone circuit, and a timer circuit, controls incoming and outgoing calls, and controls transmission of a state notification signal at regular time intervals; and Is provided.

A cordless telephone apparatus according to claim 4, wherein the cordless button telephone apparatus has a memory storing synthetic voice data for making a notification that an incoming call cannot be answered to the cordless handset, and a control circuit. Sends a busy tone, and multiple cordless handsets are used,
At the time of an incoming call when out-of-service information indicating that the status notification signal transmitted by all cordless handsets has not been received in a fixed time is stored in the information storage memory, the incoming response stored in the memory by the control circuit is received. Synthesized voice data of the impossible notification is read out, and the synthesized voice data or the busy tone from the control circuit is immediately transmitted to the call destination via the central office circuit and the local office line.

According to a fifth aspect of the present invention, there is provided a cordless telephone device, wherein the cordless button telephone device includes a memory storing synthetic voice data for notifying that the incoming call to the cordless handset cannot be answered. Sends out a busy tone, and when the out-of-service information for the particular cordless handset is stored in the information storage memory when the call arrives at the particular cordless handset by the direct telephone number, the control circuit stores the out-of-service information in the memory. It is configured to read out the synthesized voice data of the notification that the incoming call response cannot be made, and immediately transmit the synthesized voice data or the busy tone from the control circuit to the call destination through the local line circuit and the local line.

According to a sixth aspect of the present invention, in the cordless telephone apparatus, the cordless button telephone apparatus includes an operation unit for setting a function and inputting a telephone number, and the operation unit transmits the extension to a control circuit between a plurality of cordless handsets. Is set,
In addition, the configuration is such that the extension is immediately transferred to another cordless slave set when an incoming call arrives at the cordless slave whose area information is stored in the information storage memory.

According to a seventh aspect of the present invention, the cordless telephone apparatus includes an operation unit for setting functions and inputting a telephone number, and the operation unit transmits to the control circuit an external line between a plurality of office lines. When an incoming call arrives at a cordless handset in which the set information is stored in the information storage memory and the area information for which an incoming call response is possible is stored, an outside line is immediately transferred to another set office line.

In the cordless telephone apparatus according to the present invention, the cordless button telephone apparatus has a first memory for recording a message of an answering machine of a call destination and a second memory for storing synthesized voice data for answering machine guidance. And a control circuit which, when receiving an out-of-service information when the status notification signal transmitted by all cordless handset units cannot be received in a predetermined time in the information storage memory, receives the out-of-service information. Is configured to read out the synthesized voice data that cannot be answered and store it in the first memory and immediately send it to the called party via the local line, and record the answering machine message from the called party in the first memory. is there.

According to a ninth aspect of the present invention, in the cordless telephone apparatus, a first memory for recording a message of an answering machine to be called and synthetic voice data for guiding an answering machine are stored in the cordless button phone apparatus. A second memory, and when the out-of-service information is stored in the specific cordless handset in the information storage memory when the call arrives at the specific cordless handset by the direct telephone number, The synthetic voice data that cannot be answered is read from the memory and immediately transmitted to the call destination via the central office circuit and the local line, and the answering machine from the call destination is stored in the first memory. There is a configuration to record to.

In the cordless telephone device having such a configuration, when the cordless button telephone device cannot receive the status notification signal transmitted by the cordless handset for a certain period of time, the connection by the wireless line is disabled. Possible, ie
It stores the fact that the cordless handset is located out of the service area where the incoming call cannot be answered and that the power switch is turned off. Based on this storage, at the time of an incoming call from the office line, the cordless button telephone device notifies the call destination that it is impossible to respond to the incoming call to the cordless handset.

As described above, the inability to answer a call in the cordless handset is immediately identified by the cordless main unit, and various notifications indicating that the incoming call cannot be answered are immediately sent to the call destination, which is convenient for use. The performance is improved.

According to a fourth aspect of the present invention, there is provided a cordless telephone apparatus in which the information storage memory stores out-of-service information when status notification signals transmitted by all cordless handsets cannot be received within a predetermined time. When out-of-service information is stored in a specific cordless handset at the time of receiving a call or a specific cordless handset using a direct telephone number, synthetic voice data or a busy tone indicating that an incoming call cannot be answered is issued. Notify the callee immediately.

In the cordless telephone device according to the sixth and seventh aspects, the extension transfer between a plurality of cordless child devices is set, and when the call arrives at the cordless child device in which the area information is stored, the other set is set. Extensions are immediately transferred to cordless handsets. In addition, when an incoming call arrives at a cordless handset in which area information is stored, an outside line is immediately transferred to another set office line. As a result, a quick proxy response becomes possible.

The cordless telephone device according to the eighth and ninth aspects is characterized in that when a state notification signal transmitted from all cordless handsets is not received within a predetermined time, out-of-service information is stored, or At the time of an incoming call to a specific cordless handset using a direct telephone number, if out-of-service information is stored in this particular cordless handset, synthetic voice data for notifying that it is not possible to respond to the incoming call is sent through the local line. The message is immediately sent to the call destination and the answering machine message from the call destination is recorded. As a result, the convenience of use is improved.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the cordless telephone device of the present invention will be described in detail with reference to the drawings. FIG.
FIG. 1 is a block diagram showing an overall configuration of a cordless telephone device according to an embodiment of the present invention. In the example of FIG.
A cordless button telephone device 1 that accommodates Lb and processes incoming call processing, outgoing processing, external line transfer or internal line transfer, and external lines through office lines La and Lb by a wireless line (wireless transmission / reception) with the cordless button telephone device 1. It is composed of cordless handsets 2a, 2b, 2c for making a call or an extension call.

FIG. 2 is a block diagram showing a detailed configuration of the cordless button telephone device 1. As shown in FIG. The example of FIG. 2 shows office lines La and Lb connected to a public telephone line network, and office lines La and Lb.
Office line circuit 10 connected to Lb to process incoming and outgoing calls
a and 10b. Further, a switch circuit 11 for switching connection of incoming call, outgoing call, external line transfer or internal line transfer, extension circuits 12a, 12b, 12c for processing incoming and outgoing calls of the cordless handsets 2a to 2c, and an antenna A
nt is connected, wirelessly transmits / receives incoming / outgoing signals via a wireless line (wireless transmission / reception) to / from the cordless handsets 2a to 2c, and includes a frequency setting circuit, a modulation / demodulation circuit, a high-frequency signal amplification circuit, a high-frequency power amplification circuit, and the like. 1
3 are provided.

The cordless button telephone device 1 has a CPU 15a and a ROM 1 storing a control program.
5b, a control circuit 15 including a working RAM 15c and the like, and a memory 16 for recording a message of an answering machine from a calling party. Further, a memory 17 for storing synthesized voice data for notifying the called party of an answering machine guidance and an inability to respond to an incoming call, an operation unit 18 for performing various function settings, and the like, as described later. A timer circuit 19 for counting seconds.

FIG. 3 is a block diagram showing a detailed configuration of the cordless handsets 2a to 2c. Cordless handset 2 in FIG.
The antennas a to 2c are respectively connected to the antenna Ant to perform wireless transmission and reception of incoming and outgoing calls through a wireless line (wireless transmission and reception) with the cordless button telephone device 1, and perform frequency setting, modulation and demodulation, high frequency signal amplification, and The wireless transmission / reception circuit 20 including a high-frequency power amplification circuit and the like is provided.

A telephone circuit (speech processor) 21 for amplifying the transmission signal and the reception signal and processing the side tone, etc.
And a microphone 22 for transmission and a speaker 23 for reception
And Further, it controls incoming and outgoing calls to the wireless transmitting and receiving circuit 20 and the telephone circuit 21 to obtain a CP.
A control unit 24 including a U, a ROM storing a control program, a working RAM, and the like is provided.

Further, a setting state, for example, an abbreviated number,
A memory 25 for storing the telephone number and the like; a keypad 26 for on / off hook, function selection and input of a telephone number; and a charging circuit 2 for controlling charging of the built-in battery E
7 are provided. In addition, as described later, the control circuit includes a timer circuit 28 for measuring four seconds and a power switch SW for supplying the DC V from the charging circuit 27 to each unit during operation.

Next, the operation of this embodiment will be described. 1 to 3, in the incoming call operation, an incoming call on the local line La is processed by the local line circuit 10a, and this incoming call is processed by the control circuit 1.
5 recognizes. The control circuit 15 outputs the cordless cordless handsets 2a to 2c from the stored switching state of the switch circuit 11.
, And controls the corresponding extension circuits 12a to 12c to call one of the cordless handsets 2a to 2c. Here, when calling the cordless handset 2a, the wireless transmitting / receiving circuit 13, the antenna A
The call is wirelessly transmitted to the cordless handset 2a through nt. In addition, incoming calls to specific cordless handsets 2a to 2c by direct telephone numbers are processed in the same manner. The same operation is performed when a call arrives at the local line Lb.

In the cordless handset 2a, the antenna An
At t, the control unit 24 recognizes the incoming call through the wireless transmission / reception circuit 20 and the telephone circuit 21. The control unit 24 controls the telephone circuit 21 to output a ringing tone from the speaker 23. Thereafter, when a response to the incoming call is operated on the keypad 26, the response is wirelessly transmitted to the cordless button telephone device 1 through the wireless transmission / reception circuit 20 and the antenna Ant.

In the cordless button telephone 1, the control circuit 15 detects a response from the cordless handset 2a through the antenna Ant and the radio transmission / reception circuit 13, and the extension circuit 12
a, by controlling the switch circuit 11 and the office line circuit 10a to connect to the call destination through the office line La through the public telephone network. With this call path closing, a call is made with the call destination. The keypad 26 terminates the call on the cordless handset 2a.
, The cordless button telephone apparatus 1 wirelessly receives this call and sends a call termination signal to the exchange of the public telephone network to restore the communication path (station line La).

Next, in the calling operation, for example, when the cordless handset 2a makes a call, the cordless button telephone device 1 receives the calling operation of the keypad 26 by radio and sends a call signal to the exchange of the public telephone line network. Is sent. Further, a selection signal of the telephone number input from the keypad 26 of the cordless handset 2a is transmitted to the exchange of the public telephone network, and connected to the destination of the selection signal, and the telephone conversation is performed.
At the end of the call by this call, the call path is restored by the call end signal.

Next, a state notification that the cordless handset 2a to 2c cannot immediately answer the incoming call is immediately recognized by the cordless button telephone device 1, and a notification to the calling party that the incoming call cannot be answered is immediately sent. The operation will be described. FIG. 4 is a sequence diagram showing a processing procedure of this state notification operation. In FIGS. 1 to 4, the cordless handsets 2 a to 2 c individually transmit a state notification signal at regular intervals of 4 seconds measured by the timer circuit 28 under the control of the control unit 24 through the wireless transmission / reception circuit 20 and the antenna Ant. Wireless transmission to the cordless button telephone device 1 is performed.

In the cordless button telephone 1, this state notification signal is received by the antenna Ant and the radio transmission / reception circuit 13, and is taken in by the control circuit 15, and this area information IN is stored in the RAM 15c. When the cordless handsets 2a to 2c can receive the status notification signal transmitted periodically as described above, the cordless handsets 2a to 2c can connect to the cordless button telephone device 1 via a wireless line (answer response). Cordless cordless handsets 2a to within the service area
The area information IN indicating that 2c is located is stored by deleting the information so far.

Here, in the cordless button telephone device 1, the control circuit 15 captures the time measured by the timer circuit 19 for 12 seconds. If the status notification signal cannot be received during the elapse of the 12 seconds, that is, the cordless cordless handsets 2a to 2c
If the cordless button telephone device 1 is moved to a position where the cordless button telephone device 1 cannot receive the status notification signal, the cordless child devices 2a to 2c are connected to the cordless button telephone device 1 via a wireless line (incoming call). The response is determined by the control circuit 15 to be out of the service area where the response is not possible. The control circuit 15 erases and stores out-of-service information OUT indicating that the cordless cordless handsets 2a to 2c are located outside the service area in the RAM 15c of the control circuit 15.

After the elapse of 12 seconds, if any or all of the cordless cordless handsets 2a to 2c are moved again to the position where the cordless button telephone device 1 can receive the state notification signal, Cordless handset 2a
The control circuit 15 determines that .about.2c are located within a service area where a call can be made with the cordless button telephone device 1 through a wireless line. The control circuit 15 determines the area information I
N is stored in the RAM 15c of the control circuit 15 by erasing the information so far.

The cordless button telephone device 1 processes various incoming and outgoing calls based on the storage in the RAM 15c. First, in the case of an incoming call from the office lines La and Lb, a ringing tone signal is wirelessly transmitted to the cordless handsets 2a to 2c storing the area information IN, and the responded cordless handsets 2a to 2c are transmitted.
c makes an external call through the office lines La and Lb.

The cordless handset 2a is stored in the RAM 15c.
Out of service information OUT is stored in all of the cordless handsets 2a to 2c by direct telephone numbers.
c, there is an incoming call, and this specific cordless handset (2a-2)
When the out-of-service information OUT is stored in c), the control circuit 15 reads out the synthesized voice data stored in the memory 17 and indicating that the incoming call response is not possible. The synthesized voice data is immediately transmitted to the call destination via the local line circuits 10a and 10b and the local lines La and Lb for notification. Further, instead of transmitting the synthesized voice data that cannot be talked, a busy tone is immediately transmitted to the call destination.

When the extension transfer mode between the cordless handsets 2a to 2c is set in the control circuit 15 from the operation unit 18 in advance, the extension through the cordless button telephone device 1 in which the area information IN is stored. The extension is immediately transferred to the cordless cordless handsets 2a to 2c capable of talking. As a result, a proxy response can be quickly made. In addition, there is an incoming call to a specific cordless handset 2a to 2c using a direct telephone number,
Out-of-service information O is assigned to this specific cordless handset (2a-2c).
Even when the UT is stored in the RAM 15c, the transfer of the outside line is immediately possible, and a quick proxy response is possible.

Further, when the answering machine mode is set in the control circuit 15 from the operation unit 18, and the out-of-service information OUT is stored in the RAM 15 in all cordless handsets 2a to 2c.
The control circuit 15 reads out the synthesized voice data for answering machine response stored in the memory 17 in response to the incoming call stored in c. This answering machine response data is immediately transmitted to the calling party via the line circuits 10a and 10b and the line lines La and Lb for notification. After that, the response to the answering machine of the caller is stored in the memory 16. After this,
The response message is reproduced by the operation of the operation unit 18 and the user listens.

Also, when there is an incoming call to a specific cordless handset 2a to 2c based on a direct telephone number, and the cordless handset (2a to 2c) has out-of-service information OUT stored in the RAM 15c, the answering machine is immediately received. And respond
In addition, a response to the answering machine of the caller is stored.

In the above description, the cordless handsets 2a to 2
2c has been moved, and when the out-of-service information OUT is stored in the cordless button telephone device 1, an example in which various responses are immediately made has been described. However, the power switch SW of the cordless cordless handsets 2a to 2c is turned off. Even when the power is not supplied to each unit through the built-in battery E and the charging circuit 27, the out-of-service information OUT is similarly stored in the cordless button telephone device 1, and the various responses described above are immediately performed. .

In this embodiment, two local lines L
Although the description has been made with reference to a and Lb and the three cordless handsets 2a to 2c, the same operation is performed when the number of office lines and the number of cordless handsets are larger. The operation and effect in this case are the same.

Although the cordless handsets 2a to 2c periodically transmit the status notification signal at intervals of 4 seconds, this time may be shorter or longer. Similarly, when the cordless button telephone device 1 measures 12 seconds,
Although it is determined that the mobile phone is out of the service area where the status notification signal cannot be received, this time may be shorter or longer.

[0043]

As is apparent from the above description, according to the cordless telephone device according to the first to third aspects, when the cordless button telephone device cannot receive the status notification signal transmitted by the cordless handset for a fixed time, It memorizes that the cordless handset is out of the service area where incoming calls cannot be answered or the power switch is turned off. Based on this memory, the cordless handset cannot answer when receiving an incoming call from the office line. Is notified from the cordless button telephone device.

In this case, the inability to answer the incoming call in the cordless handset is immediately identified by the cordless main unit, and various notifications indicating the inability to answer the incoming call are immediately sent to the call destination, which is convenient for use. Is improved.

According to the cordless telephone device of the fourth and fifth aspects, the information storage memory stores out-of-service information when a status notification signal transmitted by all cordless handsets cannot be received for a predetermined time. When an outgoing call is received, or when out-of-service information is stored in a specific cordless handset using a direct telephone number, synthetic voice data or a busy tone indicating that an incoming call cannot be answered is sent to the call destination. At this time, it becomes possible to immediately notify the synthesized voice data or the busy tone indicating that the incoming call cannot be answered to the call destination.

According to the cordless telephone device of the sixth and seventh aspects, extension transfer between a plurality of cordless child devices is set, and is set when an incoming call arrives at a cordless child device storing area information. Extension transfer to another cordless handset. Also, outside line transfer is performed. Also in this case, when it is impossible to respond to the incoming call to the call destination, the extension transfer or the external line transfer is immediately performed, and a quick proxy response becomes possible.

According to the cordless telephone device of the eighth and ninth aspects, when the out-of-service information is stored when the status notification signal transmitted by all the cordless handsets cannot be received within a predetermined time, the call is received. Alternatively, when out-of-service information is stored in a specific cordless handset of a direct telephone number, synthesized voice data that cannot respond to an incoming call is sent to the call destination via the local line, and You are recording phone number requirements. In this case as well, it is possible to immediately notify that it is impossible to answer the incoming call to the callee by using synthesized voice, and furthermore, the messages from the callee are quickly recorded, improving the convenience of use. I do.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a cordless telephone device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of the cordless button telephone device in FIG.

FIG. 3 is a block diagram showing a detailed configuration of a cordless handset in FIG. 1;

FIG. 4 is a sequence diagram illustrating a processing procedure of a status notification operation according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cordless button telephone apparatus 2a-2c Cordless cordless handset 10a, 10b Local line circuit 11 Switch circuit 12a-12c Extension circuit 13 Wireless transmission / reception circuit 15 Control circuit 15a CPU 15b ROM 15c RAM 16, 17, 25 Memory 18 Operating section 19, 28 Timer circuit 20 Wireless transmission / reception circuit 21 Telephone circuit 22 Microphone 23 Speaker 24 Control unit 26 Keypad 27 Charging circuit 28 Timer circuit Ant Antenna E Built-in battery La, Lb Local line SW Power switch

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04B 7/26 109G

Claims (9)

[Claims] 1. A cordless telephone comprising: a cordless button telephone device that accommodates an office line and processes incoming call processing, outgoing call processing, external line transfer or internal line transfer, and a cordless handset connected to the cordless button telephone device by a wireless line. In the telephone device, when the cordless button telephone device cannot receive the state notification signal transmitted by the cordless button telephone device, the cordless button telephone device stores that it is impossible to respond to an incoming call from the office line, A cordless telephone device wherein the cordless button telephone device notifies the calling party that the cordless handset cannot immediately respond to the incoming call based on the storage when the incoming call from the office line. 2. The cordless telephone device according to claim 1, further comprising: a plurality of line circuits respectively connected to the plurality of office lines for processing incoming and outgoing calls; A switch circuit for switching incoming / outgoing, outgoing, external line transfer or internal line transfer connections; and a plurality of extension circuits connected to the switch circuit and processing incoming and outgoing calls to a plurality of cordless handsets, A wireless transmission / reception circuit connected to the extension circuit to perform wireless transmission / reception of incoming / outgoing calls via the wireless line with the cordless handset, and a call when the status notification signal transmitted by the cordless handset can be received from the wireless transmission / reception circuit An information storage memory for storing area information or out-of-service information when reception was not possible within a certain time; and a timer circuit for counting the certain time Controlling the incoming line and outgoing call by controlling the office line circuit, extension circuit, wireless transmission / reception circuit and timer circuit, and determining whether or not the status notification signal transmitted by the cordless handset has been received within a predetermined time. A cordless telephone device, comprising: a circuit; 3. The cordless telephone device according to claim 1, wherein the cordless handset transmits / receives incoming / outgoing calls and wirelessly transmits a status notification signal to / from the cordless handset via a wireless line with the cordless button telephone device. A telephone circuit that outputs a transmission signal and a reception signal and performs sidetone processing; a transmission and reception microphone and a speaker connected to the telephone circuit; and a state in which the wireless transmission and reception circuit transmits. A timer circuit for measuring the time for transmitting the notification signal at regular intervals; and controlling the wireless transmission / reception circuit, the telephone circuit, and the timer circuit to control incoming and outgoing calls and control to transmit the state notification signal at regular intervals. And a control unit for performing the following. 4. The cordless telephone device according to claim 2, wherein the cordless button telephone device has a memory for storing synthetic voice data for notifying that a response to an incoming call to the cordless handset cannot be made, and The control circuit transmits a busy tone and the information storage memory stores the out-of-service information indicating that the status notification signal transmitted by all cordless handsets could not be received for a predetermined period of time. Read out the synthesized voice data of the notification that the incoming call cannot be answered stored in the memory, and immediately transmit the synthesized voice data or the busy tone from the control circuit to the call destination through the local line circuit and the local line. A cordless telephone device characterized by the above-mentioned. 5. The cordless telephone device according to claim 2, further comprising: a memory for storing the synthesized voice data for notifying the cordless button telephone device of the inability to respond to the incoming call to the cordless handset, and The control circuit sends a busy tone, and when an incoming call to a specific cordless handset by a direct telephone number is received, the information storage memory stores out-of-service information for the specific cordless handset, and the control circuit Reading out the synthesized voice data of the notification that the incoming call response is impossible stored in the memory, and immediately transmitting the synthesized voice data or the busy tone from the control circuit to the call destination through the central office circuit and the local office line. A cordless telephone device characterized by the above-mentioned. 6. The cordless telephone device according to claim 2, further comprising: an operation unit for setting a function and inputting a telephone number, wherein the cordless button telephone device transmits control information to a control circuit between the plurality of cordless handsets. A cordless telephone device in which extension transfer is set and an extension transfer is immediately performed to another cordless handset set when an incoming call arrives at a cordless handset whose area information is stored in an information storage memory. 7. The cordless telephone device according to claim 2, further comprising: an operation unit for setting functions and inputting a telephone number, wherein the cordless button telephone device transmits an external line between a plurality of office lines to a control circuit. A cordless telephone characterized in that when an incoming call arrives at a cordless cordless handset whose forwarding information is set and the information storage memory is capable of answering the incoming call, an outside line is immediately transferred to another set office line. apparatus. 8. The cordless telephone device according to claim 2, wherein the cordless button telephone device stores a first memory for recording a message of an answering machine of a call destination and synthesized voice data for answering machine guidance. A second memory, and when the information storage memory receives out-of-service information when the state notification signal transmitted by all cordless handsets cannot be received for a predetermined time, the control circuit is configured to control the aforementioned The synthetic voice data that cannot be answered is read out from the second memory and immediately transmitted to the call destination via the central office line, and the answering machine requirements from the call destination are stored in the first memory.
A cordless telephone device characterized by recording in a memory. 9. The cordless telephone device according to claim 2, wherein the cordless button telephone device includes a first memory for recording a message of an answering machine of a call destination, and synthetic voice data for guidance of an answering machine. 2nd memorized
And when the out-of-service information is stored in the specific cordless handset in the information storage memory at the time of the incoming call to the specific cordless handset by the direct telephone number, the control circuit operates the second memory. And reads out the synthesized voice data that cannot be answered and sends it to the called party immediately through the office line circuit and the office line, and stores the answering machine requirements from the called party in the first memory. A cordless telephone device characterized by recording.