JP2001309058A - Key telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To access another group when an outside line and slave sets are grouped into a plurality of groups. SOLUTION: The plurality of slave sets are grouped in a group for stores and a group for homes, an automatic answering telephone function is assigned to each group. When an absence designated slave set 5m at home has its substitute key operated, a substitute mode is generated. When the slave set 5m of the substitute mode has its recording set key operated, an absence designated slave set 51 at a store comes into an automatic answering telephone mode. In this case, the incoming call from the outside line 51 is answered automatically and a business message of a call through the outside line 51 is recorded as a message to the slave set 51. Then, when the slave set 5m of the substitute mode has its reproduction key operated, the message to the slave set 51 at the store is reproduced to the heard by the slave set 5m at home.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a key telephone apparatus having an answering machine function.

[0002]

2. Description of the Related Art In order to realize an answering machine function with this type of key telephone device, a large-sized recording / reproduction control device called voice mail is connected to a main device, and the main device is connected to a recording / reproduction control device. Recording of the business message and reproduction of the business message are controlled for each slave unit. In the case of a key telephone device having a small scale, a small-sized recording / reproducing device is provided in the device to realize an answering machine function.

A key telephone apparatus which implements an answering machine function by using voice mail can set the answering machine function for each slave unit because of a large-scale system. The answering machine can be set and canceled. In a small-sized key telephone device, the answering machine function is set only for a designated slave unit, and the designated answering unit can set an answering machine and cancel the answering machine.

On the other hand, as a method of using such a key telephone device, there is a method of using one key telephone device separately for a store and a home, and a method of using one key telephone device in different offices. . In the case of using a single key telephone device separately for a store and a home, in order to avoid a mixture of public (store) and private (home) calls, the outside line and handset used should be It is divided into two groups for home use, so that other groups cannot access each other. Also, in the case of using one key telephone device in different offices, the outside line and the slave unit to be used are similarly divided into the first and second office groups, respectively, and the other groups can access each other. I cannot do it.
This prevents, for example, incoming calls addressed to the first office from reaching the second office, and charges for outgoing calls at the first office are charged to the second office. This is prevented.

[0005]

In such a conventional key telephone apparatus, when an outside line or a handset to be used is divided into groups, the other groups cannot access each other. It is not possible to respond to the incoming call from the own group, and it is not possible to make settings for the other group from the slave unit of the own group. Can be performed only from designated slave units belonging to the other group. Therefore, an object of the present invention is to enable access to another group when an outside line and a slave unit to be used are divided into a plurality of groups.

[0006]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention accommodates a plurality of slave units and external lines, has a recording / reproducing unit, and records a caller's message via the external line. In a key telephone apparatus having an answering machine function for recording a message on the playback unit and playing back the message of the recording / playback unit and sending the message to the slave unit, a plurality of slave units are grouped corresponding to each outside line, and Detecting means for assigning a unique answering machine function and detecting a specific operation of a designated slave unit that belongs to the first group and is capable of controlling the answering machine function assigned to the first group; And control means for controlling an answering machine function assigned to a second group different from the first group when a specific operation is detected by A. In addition, the answering machine function has an answering machine mode setting function that enables caller message recording, a playback mode setting function that enables message playback, and an erasure mode setting that enables message erasure. Control means, when a predetermined operation of the designated slave is detected after a specific operation of the designated slave is detected by the detection means, the control means responds to the predetermined operation among the mode settings of the second group. The mode is set.

[0007] The control means invalidates the specified operation when the specified operation of the specified slave is detected for a predetermined time after the detection of the specified operation of the specified slave by the detection means. Further, the control means, when the detecting means detects the specific operation of the designated slave unit belonging to the first group, the designated slave unit belonging to the second group and controlling the answering machine function of the second group is in an idle state. In this case, the answering machine function assigned to the second group is controlled. The control means is capable of controlling the answering machine function of the first group based on a specific operation of a designated slave unit that belongs to the second group and controls the answering machine function of the second group. The control of the answering machine function of the first group based on the specific operation of the designated slave unit of the first group and the control of the answering machine function of the second group based on the specific operation of the designated slave unit of the first group are not performed simultaneously. Things.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the key telephone apparatus according to the present invention. In the figure, 1 is a main unit, a main unit with a plurality of outside lines 3 ₁ to 3 _n is connected to one, a plurality of key telephone (hereinafter, slave device) 51 _to
5 _m are connected via a respective line 4 ₁ to 4 _m.

Here, the main device 1 is configured as follows. That, 11 ₁ to 11 _n are external line interface is an interface between the external line 3 ₁ to 3 _n, the channel switch 12, 13 ₁ ~13 _m is an interface between the child devices 5 ₁ to 5 _m telephone interface , 14 are CPUs for controlling the main device 1, 15 is a ROM for storing programs executed by the CPU 14, and 16 is an R for storing data.
AM. Further, 17 PB receiver hold IC, 18 for transmitting the music on hold during external hold to the outside line for receiving the PB signal from the external line via the external line interface 11 ₁ to 11 _n and channel switch 12, 19 to an outside line The recording / reproducing unit is capable of recording a message from the caller to the user of each of the handset units 5 _{1 to} 5 _m and reproducing the message.

[0010] On the other hand, the handset 5 is provided with a communication line 5 from the main unit 1.
1, the communication circuit 53 connected to the communication device 1, and the transmission line 5 from the main device 1
Transmission circuit 5 that is connected to main unit 2 and performs data transmission with main device 1
4. An operation unit 58 including a control unit 55 for controlling the slave unit 5, an LCD 56, a lamp 57, a dial key 58A, a substitute key 58B, a recording set key 58C, a reproduction key 58D, an erase key 58E, and the like. Note that a speaker SP and a microphone MIC are connected to the communication circuit 53.

Here, when the off-hook operation is performed on the slave unit 5, the control unit 55 detects the off-hook from the state of the hook switch HS, sends out the off-hook information to the transmission circuit 54, and transmits the information from the transmission circuit 54 to the main device 1. When the operation of the external line key (not shown) of the operation unit 58 is detected, the operation information is transmitted from the transmission circuit 54 to the main device 1. The CPU 14 of the main device 1
When the off-hook information and the external line key operation information are received through the external line interface 3, the external line interface 11 corresponding to the external line key is received.
To catch the corresponding outside line 3.

Thereafter, when the dial key 58A of the operation unit 58 of the slave unit 5 is operated and this operation information is transmitted to the main unit 1, the CPU 14 of the main unit 1
The dialing operation information is transmitted to 1 so as to be transmitted as a dial signal from the outside line 3. Calling of the other party is performed by sending the dial signal, and when the other party answers the call, the communication path switch 12 is controlled to close the communication path between the external line 3 and the child device 5. Thereby, the outgoing line calling of the slave unit 5 is started.

When an incoming call arrives at the outside line 3, the CPU
14 detects the incoming call via the external line interface 11 and causes the telephone interface 13 to transmit incoming data to each slave unit. As a result, a buzzer (not shown) sounds in each of the slave units and a corresponding outside line lamp in the lamp 57 displays the incoming call. Here, when an outside line key corresponding to the outside line lamp on which the incoming call is displayed is pressed, the outside line key operation information is transmitted to the main unit 1 in the same manner, and the CPU 14 of the main unit 1
Controls the external line interface 11 to catch the incoming external line 3, and controls the communication path switch 12 to close the communication path between the external line 3 and the handset 5 that has responded. As a result, the incoming call of the slave unit 5 is made.

[0014] Such a key telephone apparatus is provided with external lines 3 _1-
The 3 _n sub-terminal 5 ₁ to 5 _m are grouped into a plurality of groups, it is possible an outside line assigned to each group as used in the slave unit of the same group. It is also possible to use each area of the recording / reproducing unit 19 independently for each group. That is, when such a key telephone device is installed in, for example, a house combined with a store, the key telephone device is divided into two groups, a first group and a second group.
Can be used for home use.

[0015] Here, in order to simplify the description, the outside line accommodated in the main unit 1, and outside line 3 ₁ and 3 _n, the handset and handset 5 ₁ and 5 _m. In such a case, for example, and it assigned an outside line 3 ₁ and the slave device 5 ₁ for the store,
The outside line 3 _n and the child device 5 _m are allocated for home use. In this case, the main apparatus 1 of the CPU14, only external line 3 ₁ when external line transmission of the slave unit 5 ₁ for the store is capable of controlled use, during external line transmission of the slave unit 5 _m household outside line 3 _n only available To control. Also, when the caller originates a call to the telephone number assigned for store incoming call based on the call is arriving at the external line 3 ₁ stores, in this case, CPU 14 will only handset 5 ₁ store In addition to controlling the call, if the caller calls a telephone number assigned for home use, the incoming call based on the call arrives at the outside line 3 _n of the home. Control to call only 5 _m .

Furthermore, CPU 14 of the main unit 1, when assigning answering function using the recording and reproducing means 19 to the store and home, handset 5 ₁ can control voice mail store child machine (hereinafter, away and sets as the a specifier machine), the slave unit 5 _m to allow control of the home voice mail child machine (hereinafter, is set as absent B specifier machine). The absence A designator device 5 ₁ answering A designator device 5 ₁ and performs message recording set is set to the automatic answering and recording mode. In these circumstances, the incoming call to an outside line 3 ₁ store arrives by calling a telephone number that the caller has been allocated for the store, C
The PU 14 controls the external line interface 11 ₁ to control the external line 3.
₁ and responds to the incoming call.
Controls 2閉結the communication path between the recording and playback section 19 and the external line 3 _1, and sends a response message from the recording and reproducing means 19 controls the recording playback unit 19 to the caller over the PSTN 3 ₁ Let it. After sending the response message, the recording / reproducing unit 1
9 to record the message of the caller in the store area in the recording / reproducing unit 19.

[0017] Then, in the absence A designator device 5 _1, the reproduction operation is performed, CPU 14 is channel switch 1
2 controlled to the to閉結the communication path between the automatic answering A specifier unit 5 ₁ a recording and playback unit 19, and recording and reproducing means 19 by controlling requirements are recorded in the area for the store a message (i.e., Answer a specifier unit 5 ₁ for the business message) to regenerate the causes by sent to absence a designator device 5 ₁ emitted from the speaker SP.

On the other hand, when the answering machine B with designated answering machine 5 _m performs an answering machine setting, the answering machine B with designated answering machine 5 _m is set to the answering machine mode. In such a situation, when a caller calls a telephone number allocated for home use and an incoming call arrives at the outside line 3 _n at home, the CPU 14 controls the outside line interface 11 _n to control the outside line 3 _n . While capturing and responding to the incoming call, the communication path switch 12 is controlled to control the recording / reproducing unit 1
9 and the outside line 3 _n are closed, and the recording / reproducing unit 19 is closed.
To send a response message from the recording / reproducing unit 19 to the calling party via the outside line 3 _n . After the response message is transmitted, the recording / reproducing unit 19 is controlled to record the message of the caller in the area allocated to the home in the recording / reproducing unit 19.

Thereafter, when a reproduction operation is performed in the answering machine B designated slave unit 5 _m , the CPU 14
2 to close the communication path between the absence B-designated handset 5 _m and the recording / reproducing unit 19, and control the recording / reproducing unit 19 to record the message (the message recorded in the area allocated to the home). That is, the message SP for the absence B designated slave unit 5 _m is reproduced and transmitted to the absence B designated slave unit 5 _m , and the speaker SP is transmitted.
Release from

The CPU 14 of the main unit 1 performs the above-described recording and reproduction control when each outside line and each slave unit are grouped into a store and a home, and the answering machine function is assigned to the store and the home. performed in addition, for example, the aforementioned voice mail by answering a designator device 5 _1, which is set for the store, it is also possible to control so as to substitute the absent B specifier unit 5 _m that has been set for home .

[0021] Figures 2 and 3 are flowcharts showing the CPU14 of the operation of the main apparatus 1, operation when the absence B specifier unit 5 _m households to substitute the voice mail of absence A specifier unit 5 ₁ a store It shows. First, the operation shown in the flowchart of FIG. 2 will be described. In answering B specifier unit 5 _m home, the surrogate key 58B of the operation unit 58 is operated, the key operation information is transmitted to the main apparatus side. The CPU 14 of the main device 1 detects this in the proxy key input check processing in step S1, and the “with proxy key input” in step S2 becomes “Y”.

[0022] In this case, CPU 14 is whether absence B specifier unit 5 _m of the slave unit which operates the surrogate key 58B is home determines in step S3, in the case of other handset returns to step S1, away B for specifier unit 5 _m proceeds to step S4. In step S4 store away A designator device 5 _1, it is determined whether the idle, if it is not empty the process returns to step S1, in the case of empty lamp to Answer B specifier unit 5 _m in step S5 The lighting data is transmitted, and the lamp corresponding to the substitute key in the lamp 57 is turned on. Then, to display "Rusuroku" etc. LCD56 was away B specifier unit 5 _m in step S6, and timer 14A in step S7
(No operation timer; 20 second timer)
Set the Answering Machine B designated slave unit 5 _m to the proxy mode.

If the determination in step S2 is "N" without operating the proxy key 58B, it is determined in step S8 whether a key related to normal recording such as the recording set key 58C has been operated. Judgment, recording set key 58
If C is operated, at step S9, the absence B designated slave unit 5
_After setting _m to the normal recording mode (answering machine mode), the process ends. If any other key is operated, other processing is performed in step S10, and the processing is terminated.

[0024] As described above, in the absence B specifier unit 5 _m, which is set in the proxy mode, the key of the operation unit 58 within the time-up of the timer 14A is operated, the main device 1 of CPU14 Figure It is determined that “there is an event” in step S12 of 3 is “Y”. In this case, the CPU 14
Operated key is determined whether the record set key 58C at step S13, in the case of recording the set key 58C away A designator device 5 ₁ at step S14, it is determined whether or not the answer phone sets. Then, if in answer phone sets, while releasing the answer phone mode absence A designator device 5 ₁ at step S16, if not in the answer phone sets, step S15
In set to automatic answering and recording mode performs a voicemail set of absence A specifier machine 5 _1. Thereafter, the no-operation timer 14A is started in step S17, and the process returns to step S11.

[0025] In this way, the absence B specifier machine 5 _m of for home use, as well as to enable the setting of the proxy mode to substitute the voice mail of absence A specifier machine 5 ₁ for the store, absence of proxy mode Absent A designated handset 5 with B designated handset 5 _m
By which is adapted to perform the answer phone set and release the _1, if for example, such as work in the store noticed the forgotten of the store of the child machine 5 ₁ of the answer-phone set when you go home to be completed, The answering machine set can be performed by the home cordless handset 5 _m . Therefore, returning to the store again, the child device 5 of the store
It is possible to avoid having to set the answering machine by ₁ and the usability is improved.

Thus, the answering machine B designated slave unit 5 in the proxy mode
After answer phone sets of absence A designator device 5 ₁ is performed by _m, by calling a telephone number that the caller is assigned to a store, an incoming arrives external line 3 ₁ store, C
As described above, the PU 14 automatically responds to an incoming call from an outside line, and records a message on the caller side in the store area of the recording / playback unit 19. Here, the answering machine B designated in standby mode 5 _m
When the reproduction key 58D is operated in step S1,
The determination of the “reproduction key” of No. 8 is “Y”. In this case, C
PU14 determines whether absence the recording and reproducing means 19 A designator device 5 ₁ for the business message in step S19 is recorded.

[0027] Here, if the business message is recorded in the store for the area of the recording and playback section 19, CPU14, it is determined that the absence A specifier machine 5 ₁ for the business message has been recording and playback mode set, and controls the channel switch 12 in step S20, while閉結the speech path between the recording and reproducing means 19 and away B specifier unit 5 _m, in the store area and controls the recording playback unit 19 recorded in that business messages (i.e., absence a designator device 5 ₁ for the business message) are regenerated, it is sent to the automatic answering B specifier unit 5 _m to start the reproduction process. When the reproduction of all the message has been completed, the reproduction in step S21 is completed. The process proceeds to step S17 to start the no-operation timer 14A, and then returns to step S11. In the case where when the reproduction key 58D is operated on the answering B specifier unit 5 _m proxy mode, the answer to the recording and reproducing means 19 A designator device 5 ₁ for the business message is not recorded, the step S17
After starting the no-operation timer 14A at step S,
Return to 11. In this way, the store at the time of such a holiday, it is possible to listen to the business message that has been notified to the store of absence A specifier machine 5 ₁ addressed from the caller in the absence B specifier machine 5 _m of the home.

Next, the erase key 58E is operated in the absence B specifier unit 5 _m proxy mode, step S22
Is "Y", and in this case, the CP
U14 is absent the recording and reproducing means 19 A designator device 5 ₁ for the business message is similarly determined whether or not recorded at step S23. Then, it erases the business message by setting the erase mode if absent A designator device 5 ₁ for the business message is recorded step S24, to start the non-operation timer 14A and proceeds to step S17 After that, the process returns to step S11. Incidentally, when the erase key 58E is operated in the absence B specifier unit 5 _m proxy mode, the answer A specifier unit for recording and reproducing unit 19 5
If the business message for ₁ has not been recorded, the no-operation timer 14A is started in step S17, and the process returns to step S11.

[0029] In this way, the absence B specifier machine 5 _m of the home that has been set in the proxy mode, in the same manner as in absence A specifier machine 5 ₁ of the store, absence store of absence A specifier machine 5 ₁ Record set, answering machine release, and message reproduction / deletion can be performed. Here, the answering machine B designation slave unit 5 in the proxy mode
There is an extension incoming call or an outside call incoming for _m , and step S25
Is “Y”, the CPU 14 of the main device 1
Ignores such a response operation in step S26 even if an incoming call response operation is performed by the answering machine B designated handset 5 _m ,
It returns to step S11.

Further, in the absence B specifier unit 5 _m proxy mode, when the operated key is determined to neither said key, the operation key is determined to be a surrogate key 58B (step S27) , In this case, absence B
The designated slave unit 5 _m is released from the proxy mode. That is, in step S28, turns off the lamp corresponding to the surrogate key in the lamp 57 of the automatic answering B specifier unit 5 _m, with releasing the proxy mode in step S29, the answer B specifier unit 5 _m of the LC
In step S30, the display such as "Luzoku" displayed in D56 is deleted. Further, in step S31, the no-operation timer 14A is stopped. As a result, the substitute mode of the answering machine B designated slave unit 5 _m ends. Note that in the absence B specifier unit 5 _m, which is set in the proxy mode, no operation timer 14A if not performed for 20 seconds what operation is determined in step S11 time-up is "Y". In this case, by performing the processing of step S28 and subsequent steps, to release the proxy mode of absent B specifier unit 5 _m.

In this embodiment, in order to simplify the explanation,
, Outside line 3 for stores₁ And child unit 5 ₁ And assign the house
Outside line 3 for garden_n And child unit 5_m For example,
As explained above, multiple child units were assigned to stores and homes, respectively.
And one for each child device assigned to the store
Is set as the absence A designated handset and assigned to the home
One of the slave units may be set as the absence B designated slave unit.
In this case, only the answering machine A and the answering machine B
Assign a proxy key 58B to each of the slave units, and
Not be assigned. And home absence B
The designated slave unit operates the substitute key to enter the substitute mode.
Becomes a control of the answering machine function of the answering machine designated as A
Can be run with In addition, the absence A designated child unit of the store
Operate the surrogate key to enter the surrogate mode,
Control the answering machine function of the designated answering machine in the garden
It is also possible. However, the absence A designated slave unit and absence
The B-designated handset cannot be in the proxy mode at the same time.

Also, in the present embodiment, the substitute mode of the absence B designated slave unit 5 _m is released by the non-operation of the absence designated B unit 5 _{m in} the substitute mode for 20 seconds and pressing of the substitute key. , in addition, to release the proxy mode of absent B specifier unit 5 _m by answer phone set operations of absence a designator device 5 _1, and the like. In addition, to cancel the proxy mode of absence B specifier machine 5 _m when the automatic response to incoming outside line 3 ₁ for the store. Also,
To release the proxy mode of absent B specifier unit 5 _m, it is possible to prevent continues to hold the proxy state by releasing one unit operation. That is, the answering machine B designated slave unit 5 _m
Is operated in the proxy mode by operating the proxy key, and then, for example, the recording set key is operated to
After the answering machine is set to ₁ , the proxy mode of the answering machine designated with the answering machine B 5 _m can be canceled.

[0033]

As described above, according to the present invention, in a key telephone apparatus accommodating a plurality of slave units and outside lines and having an answering machine function, the plurality of slave units are grouped according to each outside line. At the same time, when a specific operation of a designated answering machine is assigned to each group, and a specific operation of a designated slave unit belonging to the grouped first group and capable of controlling the answering machine function of the first group is detected, the second operation is performed.
The answering machine function of the group is controlled, so when the outside line and the slave unit to be used are divided into a plurality of groups, the answering machine function assigned to another group can be accessed and controlled. . In addition, as an answering machine function, an answering machine mode setting function that enables recording of the caller's message, a playback mode setting function that enables message playback, and an erasing mode setting that enables message erasing When a predetermined operation of the designated slave unit is detected after a specific operation of the designated slave unit of the first group is detected, a mode corresponding to the predetermined operation among the mode settings of the second group is set. When a plurality of outside lines and slaves are grouped into, for example, a store and a home, when the work in the store is completed and the user returns home, the answering machine mode setting of the slave in the store is set. If the user forgets to do so, the child device at the store can be set to the answering machine mode by the child device at home. For this reason,
It is possible to avoid returning to the store and performing the answering machine mode based on the operation of the child device of the store, thereby improving usability.

Further, when the specified operation of the designated slave is detected for a predetermined time after the specified operation of the designated slave is detected, the specified operation of the designated slave is invalidated. Permanent access to can be prevented. Also, when a specific operation of the designated slave unit belonging to the first group is detected, the answering machine function assigned to the second group is controlled only when the designated slave unit belonging to the second group is idle. With this configuration, it is possible to prevent confusion caused by each of the designated slave units belonging to different groups simultaneously controlling the answering machine function of the same group. Further, the control of the answering machine function of the first group based on the specific operation of the designated handset of the second group and the control of the answering machine function of the second group based on the specified operation of the designated handset of the first group are performed. Since it is not performed at the same time, it is possible to prevent confusion caused by the designated slave units in different groups simultaneously accessing and controlling the answering machine function of another group.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a key telephone apparatus according to the present invention.

FIG. 2 is a flowchart showing an operation of a main part of the key telephone apparatus.

FIG. 3 is a flowchart showing an operation of a main part of the key telephone apparatus.

[Explanation of symbols]

1 ... main unit, 3 ₁ to 3 _n ... external line, 5 ₁ to 5 _m ... key telephone (handset), 11 ₁ to 11 _n ... external interface,
12: communication path switch, 13 _{1 to} 13 _m : telephone interface, 14: CPU, 14A: timer, 19: recording / reproducing unit, 53: communication circuit, 54: transmission circuit, 55: control unit, 56: LCD, 57 ... Lamp 58, operation unit 58
A: dial key, 58B: substitute key, 58C: record set key, 58D: play key, 58E: erase key.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K015 AB02 AF05 GA01 GA09 5K024 AA73 BB05 CC02 DD01 EE04 FF01 5K049 AA15 BB05 BB14 FF01 FF39 GG11 KK02 KK12

Claims (5)

[Claims] An information processing apparatus comprising: a plurality of slave units and an external line; a recording / playback unit provided; a caller's message via the external line being recorded in the recording / playback unit; In the key telephone device having an answering machine function to be sent to a machine, the plurality of slave units are grouped according to each outside line, and a unique answering machine function is assigned to each group, and the grouped Detecting means for detecting a specific operation of a designated child device which belongs to one group and is set to be capable of controlling the answering machine function assigned to the first group; and when the specific operation is detected by the detecting means, And control means for controlling an answering machine function assigned to a second group different from the first group. Telephone equipment. 2. The answering machine function according to claim 1, wherein the answering machine function includes a setting function of an answering machine mode that enables recording of a message of a caller, a setting function of a playback mode that enables playback of the message, A setting function of an erasing mode that enables erasing of a message, wherein the control unit detects a specific operation of the designated slave unit after the specific operation of the designated slave unit is detected by the detection unit. A key-phone device that sets a mode corresponding to the predetermined operation among the mode settings of the group. 3. The control unit according to claim 2, wherein the control unit detects the specific operation of the designated slave unit for a predetermined time after the detection unit detects the specific operation of the designated slave unit. A key telephone device characterized by being invalidated. 4. The control device according to claim 1, wherein the control unit detects a second operation when the detection unit detects the specific operation of the designated slave unit belonging to a first group.
The key telephone device controls the answering machine function assigned to the second group when the designated slave unit belonging to the group (2) and capable of controlling the answering machine function of the second group is idle. 5. The answering machine function according to claim 1, wherein the control means controls the answering machine function of the first group based on a specific operation of a designated slave unit belonging to the second group and capable of controlling the answering machine function of the second group. Control of the answering machine function of the first group based on the specified operation of the designated handset of the second group, and the answering machine function of the second group based on the specified operation of the designated handset of the first group And a key telephone device which is not simultaneously controlled.