JPH08204815A - Telephone system - Google Patents

Abstract

PURPOSE: To prevent the meaning of priority setting from being weakened and to avoid a trouble of disabling a response after the execution of ringer operation. CONSTITUTION: Plural telephone sets consisting of a master equipment(ME) 1 and slave equipments(SEs) 2-1 to 2-m are grouped into 1 to N by a priority setting key on the ME 1 to set up the priority of the telephone sets and the information of the priority is stored in a set state storing part built in the ME 1. A normal mode or a preferential ringer mode can be set up by a mode setting key on the ME 1. When an incoming call is received in a state set up to the preferential ringing mode, a microcomputer in the ME 1 allows telephone sets belonging to the group 1 to execute ringing operation. Then telephone sets belonging to the groups 1, 2 are allowed to execute ringing operation and the number of groups to similarly execute ringer operation is successively increased in the priority order.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device comprising a plurality of telephones, a master and a slave. For details, when there is an incoming call when the priority ringing mode is set, the number of groups is sequentially increased in order of priority and the ringing operation of multiple phones is performed, so that the meaning of the priority setting is prevented from fading and the ringing operation is performed. The present invention relates to a telephone device capable of avoiding the inconvenience of being unable to respond after being exposed.

[0002]

2. Description of the Related Art Conventionally, there is a telephone device including a plurality of telephones, a parent device and a child device. It has been proposed that such a telephone device first causes only a certain telephone to output a ringing tone when a call arrives (a ringing operation). For example, as shown in FIG. 6, in a telephone device including one master device 10 and four slave devices 21 to 24, for example, when the slave device 22 is preferentially set and the number of calls is set to 5 times, , And operates according to the flowchart of FIG. That is, when an incoming call arrives, first of all, the handset 22 outputs a ringing tone (step ST1). When there is no response in the slave unit 22 while the slave unit 22 outputs the ringing tone five times, then all the slave units 21 to 24 and the master unit 10 output the ringing tone (step ST2).

Further, there has been proposed the above-mentioned telephone device which executes an operation of outputting a ringing tone for each of the telephones one by one when receiving a call. For example, as shown in FIG. 6, one master 10 and four slaves 21
In the telephone device consisting of
In the order of priority of the child device 22, the child device 23, the child device 24, and the parent device 10,
When the number of calls is set to 5, the operation is performed according to the flowchart of FIG. That is, when there is an incoming call,
First, the calling sound is output from the handset 21 (step S
T11). When there is no response in the slave unit 21 while the slave unit 21 outputs the ringing tone five times, the slave unit 22 then outputs the ringing tone (step ST12). Cordless handset 22
If the slave 22 does not respond while the ringing tone is output five times, the ringing tone is output from the slave 23 next (step ST13). In the same manner, the child device 24,
A ringing tone is output in order from the base unit 10 (step ST
14, ST15), and then returns to step ST11.

[0004]

According to the former one, in which a ringing operation is performed to output a ringing tone only to a certain handset when an incoming call arrives, the owner of the handset which has been set prioritized calls five times. If the call key is pressed during the sound and the call cannot be answered, the ringing sound is output from all the telephones, so that the meaning of the priority setting becomes inconvenient.

On the other hand, according to the latter type, which performs a ringing operation for outputting a ringing tone one by one for each telephone when receiving an incoming call, since each telephone outputs a ringing tone in the order of priority, midnight is performed. This is effective when a call arrives at a phone, etc., but if the owner of a phone fails to answer by pressing the call key during the five ring tones, the ring tone is output from the next phone. There is an inconvenience that it cannot respond after switching to the state.

Therefore, the present invention provides a telephone device which can prevent the meaning of the priority setting from being diminished and can avoid the inconvenience that the response cannot be made after the ringing operation is executed.

[0007]

A telephone device according to the present invention comprises a plurality of telephones, a master unit and a slave unit.
And an incoming call detecting means for detecting that there is an incoming call,
By the priority order setting means for setting a priority order by grouping a plurality of telephones, the mode setting means for setting the priority ringing mode, and the incoming call detecting means while the priority ringing mode is set by the mode setting means. When an incoming call is detected, the ringing control means is provided for sequentially increasing the number of groups in the priority order set by the priority setting means and executing the ringing operation of a plurality of telephones.

[0008]

The plurality of telephones are grouped in advance by the priority setting means, and the priority of each group is set. When an incoming call is detected by the incoming call detection means while the priority ringing mode is set by the mode setting means,
The ringing control means first causes the telephone belonging to the group having the first priority to perform the ringing operation. Next, the ringing control means causes the telephones belonging to the first and second priority groups to perform the ringing operation. Thereafter, the ringing control means sequentially increases the number of groups in order of priority to cause the telephones belonging to the group to perform the ringing operation, and finally all the telephones to perform the ringing operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a telephone device of this example, which is composed of one master unit 1 and a plurality of slave units 2 _-1 to 2 _-m . The master unit 1 is connected to the line, and the master unit 1 and the slave units 2 _-1 to 2 _-m are wirelessly connected.

FIG. 2 shows an example of the configuration of the base unit 1. The voice signal transmitted via the line is the line control unit 101.
Is supplied to the voice path control unit 102 through the voice path control unit 102, and is supplied from the voice path control unit 102 to the receiver (speaker) of the handset (handset) 103, the speaker 104, or the wireless modem unit 105. The voice path in the voice path control unit 102 is set by a microcomputer (hereinafter, referred to as “microcomputer”) 106 that constitutes the control unit. A signal indicating the state of the audio path is supplied from the audio path control unit 102 to the microcomputer 106, and the microcomputer 106 manages the audio path of the audio path control unit 102 based on this signal.

For example, when the handset 103 is in the off-hook state and is in the use mode of the handset 103, the voice path is set so that the voice signal is supplied from the voice path control unit 102 to the handset of the handset 103. When the speaker key described later is pressed and the speaker 104 is in the use mode, the voice path control unit 1
The audio path is set so that the audio signal is supplied from 02 to the speaker 104. When any one of the slave units 2 _{-1 to} 2 _-m is used, the voice path control unit 1
From 02, a voice path is set so that a voice signal is supplied to the wireless modem unit 105.

The transmitter (microphone) of the handset 103, the microphone 109 or the wireless modulation / demodulation unit 105.
The voice signal output from the line control unit 101 is supplied to the line control unit 101 through the voice path control unit 102.
Is sent to the line via. In this case, when the handset 103 is in the use mode described above, the voice path is set so that the voice signal output from the transmitter of the handset 103 is supplied from the voice path control unit 102 to the line control unit 101. . When the speaker 104 is in the use mode described above, the voice signal output from the microphone 109 is transmitted from the voice path control unit 102 to the line control unit 1.
The audio path is set to be supplied to 01. Also,
When any one of the slave units 2 _{-1 to} 2 _-m is used, the audio signal output from the wireless modulation / demodulation unit 105 is supplied from the audio path control unit 102 to the line control unit 101. The route is set.

A radio modulation / demodulation unit 1 from the voice path control unit 102.
The audio signal supplied to 05 is subjected to compression coding processing (including error correction coding processing) and digital modulation processing after being converted into a digital signal. Then, it is supplied to the antenna 108 via the wireless unit 107 and transmitted to the slave unit side. Further, the signal from the slave unit received by the antenna 108 is transmitted via the wireless unit 107 to the wireless modulation / demodulation unit 10.
5 is subjected to digital demodulation processing and compression decoding processing (including error correction processing), and then converted into an analog signal and output.

[0014] signals for the communication of the master unit 1 and the handset 2 _-1 to 2 _-m, control data for controlling the 2 _-1 to 2 _-m base unit 1 Yoriko machine, multiplexed on the digital audio data Sent and received. That is, the signal for control output from the microcomputer 106 and the control data are multiplexed with the digital voice data by the wireless modulation / demodulation unit 105 and transmitted to the slave units 2 _-1 to 2 _-m . A signal for communication transmitted from the slave units 2 _{-1 to} 2 _-m is separated from digital audio data by the wireless modulation / demodulation unit 105 and supplied to the microcomputer 106.

110 outputs a ringing tone when receiving a call.
It is a ringing tone output section for
Be composed. The operation of the ring back tone output section 110 is performed by a microcomputer.
Controlled by 106. The microcomputer 106 has a telephone
Use the numeric keypad and the speaker 104 to enter numbers, etc.
Key for switching to the operation mode, base unit 1 and handset 2 _-1
~ 2_-mGroups of phones to set the priority order
Priority setting key for normal mode or priority ringing mode
Key input with mode setting keys etc. for setting to
Setting state memory composed of the unit 111, non-volatile memory, etc.
The display unit 113 including a unit 112 and a liquid crystal display element
Connected.

The setting state storage unit 112 includes a key input unit 1
The master unit 1 and the slave unit 2 ₋₁ set by the 11 priority order setting keys
The 2- _m grouping information and the priority order information are stored, and the mode setting information set by the mode setting key of the key input unit 111 is also stored. Further, in this example, as will be described later, when the priority ringing mode is set, the number of groups is sequentially increased in order of priority and the ringing operation of a plurality of telephones is executed.
Information on the number of calls preset by the key input unit 111 to obtain the timing for increasing the number of groups is also stored in the setting state storage unit 112. The display unit 113 displays a telephone number input using the key input unit 111 when a call is made, the above-mentioned various setting states, and the like.

Reference numeral 114 is a well-known DT corresponding to the telephone number of the other party input by using the key input unit 111 at the time of calling.
It is a DTMF modulator that outputs an MF (Dual Tone Multiple Frequency) signal, and its operation is controlled by the microcomputer 106. At the time of calling, the DTMF signal output from the DTMF modulator 114 is supplied to the line via the voice path controller 102 and the line controller 101.

Reference numeral 115 is an incoming call (ringer) detecting section for detecting an incoming call. A line signal is supplied to the incoming call detection unit 115 from the line via the line control unit 101. Incoming call detection unit 11
In FIG. 5, a call signal of 16 Hz, which is intermittently supplied from the exchange, is supplied, and, for example, a high level “H” incoming detection signal is formed during the supply period of this call signal. The incoming call detection signal output from the incoming call detection unit 115 is the microcomputer 106.
Is supplied to.

Reference numeral 117 is a line disconnection detecting unit for detecting line disconnection on the calling side. If the calling side disconnects the line, a 400Hz continuous signal (dial tone signal) from the exchange,
Alternatively, a 400 Hz intermittent signal (busy tone signal) is sent or the silence state occurs. The line disconnection detecting unit 117 detects line disconnection by detecting any one of the above-mentioned states. This line disconnection detector 117
The line disconnection detection signal output from the above is supplied to the microcomputer 106.

Reference numeral 116 is a hook state detecting unit for detecting whether the handset 103 is in an on-hook state or an off-hook state. The hook state detection unit 116 is configured to have a switch that operates in conjunction with a hook switch HS (not shown in FIG. 2) arranged in the line control unit 101. As is well known, the hook switch HS is turned on when the handset 103 is in the off-hook state to bring the line into a DC closed state (DC loop closed), and when the handset 103 is in the on-hook state. It is turned off and the line is in the DC open (DC loop open) state.

Although not shown in FIG. 2, the line control unit 1
The connection switch is arranged in parallel with the hook switch HS of 01. The on / off of the connection switch is controlled by the microcomputer 106. For example, the speaker key of the key input unit 111 is pressed to set the speaker 104 to the use mode, or the call keys of the _slaves 2 _-1 to 2 _-m described later are pressed to set the slave to the use mode. At that time, the connection switch is turned on, and even if the handset 103 is in the on-hook state, the line is in the DC closed state. When the connection switch is turned on in the use mode of the speaker 104 and the line is in the DC closed state, when the speaker key of the key input unit 111 is pressed, the connection switch is turned off and the line is turned off. Is in the DC open state. Similarly, when the connection switch described above is turned on in the usage mode of the child device and the line is in the DC closed state, when the call key of the child device in the used state is pressed, the connection switch is turned off. Then, the line is opened to direct current.

FIG. 3 shows a configuration example of the line control unit 101 and the like. As shown, the line is a 2-wire / 4-wire conversion circuit 10.
It is connected to the voice path control unit 102 via 1a. Further, the hook switch HS described above is inserted and connected to the line, and the microcomputer 1 is connected in parallel with the hook switch HS.
The connection switch 101b whose ON / OFF is controlled by 06 is connected. Further, a line is connected to the incoming call detecting unit 115 and the line disconnection detecting unit 117 via the DC cut capacitor 101c, whereby a line signal is supplied to the incoming call detecting unit 115 and the line disconnecting detecting unit 117. Also,
The hook state detection unit 116 is configured to include a connection switch 116a that is turned on / off in conjunction with the hook switch HS. One end of the connection switch 116a is connected to the power supply terminal, and the other end is grounded via the resistor 116b.
Then, the signal obtained at the connection point of the connection switch 116a and the resistor 116b is supplied to the microcomputer 106 as a hook state detection signal.

In the above configuration, the handset 103
Off the hook, or the key input unit 111
After the speaker key is pressed to bring the line into a DC-closed state and the telephone number of the other party is input by operating the key of the key input unit 111, a calling operation is performed. That is, the DTMF signal corresponding to the telephone number of the other party is output from the DTMF modulator 114 under the control of the microcomputer 106,
This DTMF signal is transmitted to the exchange (not shown) through the voice path control unit 102 and the line control unit 101 and further through the line. As a result, the line with the other party is connected and the call becomes possible.

When the telephone number of the other party is input by the key operation of the key input section of the slave units 2 _-1 to 2 _-m , which will be described later, and the calling operation is performed, the slave units 2 _-1 to 2 _-m. The telephone number data is sent from the user side, and the microcomputer 106 is sent from the wireless modem unit 105.
Is supplied to. Then, under the control of the microcomputer 106, a DTMF signal corresponding to the telephone number of the other party is output from the DTMF modulator 114, and is sent to the exchange (not shown) via the voice path controller 102 and the line controller 101 and through the line. Sent. As a result, the line with the other party is connected, and a call can be made using the slave units 2 _-1 to 2 _-m .

In addition, when a call signal is transmitted through the line in the standby state, the incoming call detection unit 115 detects an incoming call, and as described later, the master unit 1 or the slave units 2 _-1 to 2 _-1 .
A ringing operation is performed in which a ringing tone is output from 2- _m .
The base unit 1 can respond by putting the handset 103 in an off-hook state while the ringing operation is being performed or by pressing the speaker key of the key input unit 111. On the other hand, the handset units 2 _{-1 to} 2 _-m can respond by pressing a call key to be described later while the ringing operation is being performed. When the response operation is performed by the master unit 1 or the slave units 2 _-1 to 2 _-m , the hook switch HS or the connection switch 101b is turned on, and the line is in a DC closed state. As a result, the line with the other party is connected and the call becomes possible.

When the line is connected and in a callable state, the handset 103 is put in the on-hook state when the base unit 1 is used, or the speaker key of the key input unit 111 is pressed to use the handset unit. Sometimes the line is disconnected by pressing the call key of the cordless handset in use to open the line to DC.

FIG. 4 shows a configuration example of each of the slave units 2 _-1 to 2 _-m . In the figure, a signal from the base unit 1 side received by the antenna 201 is supplied to the wireless modulation / demodulation unit 203 via the wireless unit 202, and digital demodulation processing and compression decoding processing (including error correction processing) are performed. later,
It is converted into an analog signal and output. Wireless modem 2
The received voice signal output from 03 is supplied to the speaker 204 that constitutes the receiver.

The transmission voice signal output from the microphone 205 constituting the transmitter is supplied to the radio modulation / demodulation unit 203, converted into a digital signal, and then subjected to compression coding processing (including error correction coding processing) and digital coding. Modulation processing is performed. Then, it is supplied to the antenna 201 via the wireless unit 202 and transmitted to the base unit 1 side.

The control data for controlling signal, a 2 _-1 to 2 _-m base unit 1 Yoriko machine for communication master unit 1 and the slave device 2 _-1 to 2 _-m as described above, a digital The voice data is multiplexed and transmitted / received. That is, the signal and control data for communication transmitted from the base unit 1 side are separated from the digital voice data by the wireless modulation / demodulation unit 203 and supplied to the microcomputer 206 constituting the control unit. The signal output from the microcomputer 206 for communication is multiplexed with the digital voice data by the wireless modulation / demodulation unit 203 and transmitted to the base unit 1 side.

Reference numeral 207 is a ringing tone output section for outputting a ringing tone when an incoming call arrives, and is constituted by including a speaker, a buzzer and the like. The operation of the ring back tone output unit 207 is performed by the microcomputer 20.
6. In other words, when the instruction data for ringing tone output is supplied as control data from the master unit 1, the ringing tone output unit 207 is controlled by the microcomputer 206.
A ringing tone is output and the ringing operation is executed. In addition, on the slave units 2 _{-1 to} 2 _-m side, it is confirmed that the slave unit number information added to the control data matches the slave unit number information stored in the setting state storage unit described later. , Make sure that the control data is for itself.

The microcomputer 206 is provided with a keypad 208 for inputting a telephone number or the like, a key for setting a slave unit number, etc., and an off-hook state to an on-hook state or vice versa. Call key 209
Is connected. The information of the slave unit number preset by the key operation of the key input unit 208 is stored in the setting state storage unit 210 including a non-volatile memory connected to the microcomputer 206.

Here, the communication operation between the master unit 1 and the slave units 2 _-1 to 2 _-m will be briefly described. When a call is received from the calling side, the following communication operation is performed, for example. First, the master unit 1 notifies the slave units 2 _-1 to 2 _-m that there is an incoming call through the control channel. At this time, an ID code is transmitted in order to confirm that they are paired with each other. The slave units 2 _-1 to 2 _-m that have received this ID code check whether the ID codes match, and if they match, send the ID code back to the master unit 1.

Next, the base unit 1 is free to make a call.
To find a channel_-1~ 2_-mNotify. Cordless handset 2
_-1~ 2_-mWhether the call channel is open
And if it is available, it will go through the call channel
A confirmation signal is sent to base unit 1. Now you can talk
Therefore, the base unit 1 uses the call channel to set the handset 2_-1~ 2 _-m
Sending instruction data for ringing tone output to. This place
Group, increase the number of groups in order of priority as described later.
The ring tone output instruction data
The information of the child device number is added to the data.

When the cordless handsets 2 _-1 to 2 _-m receive the ringing tone output instruction data for themselves, the ringing tone output unit 207.
Output ringing sound. When the call key 209 of the slave unit that outputs the ringing tone is pressed, a response signal is sent to the master unit 1 and the connection switch 101 of the line control unit 101.
b (see FIG. 3) is turned on and the line is connected, whereby a call is made using the handset.

When making a call to the other party from any of the slave units 2 _-1 to 2 _-m , the following communication operation is performed, for example. First, the call key 209 of a predetermined slave unit is pressed, and a signal "transmit" and an ID code are sent to the master unit 1 side through the control channel. Upon receiving this, the base unit 1 confirms that it is the ID code of its own handset, searches for a vacant channel for communication, and notifies the handset. The slave unit detects whether or not the call channel is free, and when it is free, sends a confirmation signal to the base unit 1 through the call channel.

Next, in the base unit 1, the connection switch 101b of the line control unit 101 is turned on to connect to the exchange, and when the connection is established, the dial tone signal sent from the exchange is transmitted through the communication channel to the handset. Send to the side.
The following is similar to the case of using the base unit 1, the key input unit 2
A call operation can be performed by using 08 to input the telephone number of the other party.

[0037] While the communication of the master unit 1 and the handset 2 _-1 to 2 _-m as described above are performed using a control channel or a predetermined communication channel, the master unit 1 and handset 2 _-1 to 2 _{- m} microcomputer 10
Reference numerals 6 and 206 control so as to switch the transmission / reception frequency of the radio units 107 and 202 according to the control channel and the communication channel used.

In this example, an incoming call is detected by the incoming call detection unit 115.
If it is detected, the microcomputer 106 uses the flowchart of FIG.
Along with the main unit 1 and the child unit 2_-1~ 2_-mControl the ringing behavior of
I do. In this case, press the priority setting key on the key input unit 111.
Therefore, the master unit 1 and the slave unit 2 _-1~ 2_-mIndicates the priority order
Pre-grouped into loops 1-N (see Figure 1)
Shall be. Also, by operating the keys on the key input unit 111
Call to get the timing to increase the number of groups
The number of repetitions is set to n times, for example, 5 times.
It

First, in step ST1, it is determined whether or not the priority ringing mode is set by referring to the mode setting information stored in the setting state storage section 112. When the priority ringing mode is set, a = 1 is set in step ST2, and then the process proceeds to step ST3. Step S
At T3, groups 1 to a (because a = 1 at the beginning,
A ringing operation for outputting a ring tone to a telephone belonging to group 1 only) is executed. In this case, the cordless handset 2 _-1 to 2 _-m
The ringing tone output instruction data to be sent to
The number information of the child device belonging to a is added.

Next, in step ST4, it is determined whether or not there is a response, in step ST5 it is determined whether or not the calling of the calling side is stopped, and in step ST6, the number of calls is n. Or not. Step ST4
If there is a response in step ST4, or if the calling of the other party is stopped in step ST4, call in step ST12,
That is, the ringing operation is ended.

When the number of calls reaches n in step ST6, after incrementing a in step ST7, it is determined in step ST8 whether or not a = N, and a =
If not N, the process returns to step ST3. As a result, until the telephone belonging to the group N is caused to perform the ringing operation,
The number of groups that perform the ringing operation is controlled to increase sequentially in the order of priority each time a call is made n times.

If a = N in step ST8, all telephones belonging to groups 1 to N in step ST9,
Therefore, the master unit 1 and the slave units 2 _-1 to 2 _-m for which the priority order is set
Cause the ringing sound to be output to. As a result, the ringing tone is finally output from all the telephones whose priority order is set. Next, in step ST10, it is determined whether or not there is a response, and in step ST11, it is determined whether or not the calling of the other party is stopped. When there is a response in step ST10, or when the calling of the other party is stopped in step ST11, the calling is ended in step ST12.

If the priority ringing mode is not set in step ST1, that is, if the normal mode is set, step ST9 follows and the ringing operation for immediately outputting a ringing tone to all telephones is executed. Then, in step ST10, there is a response, or in step ST
The ringing operation is continued until the calling of the other party is stopped at 11.

In this example, a plurality of telephones (master unit 1 and slave units 2 _-1 to 2 _-m ) are grouped into groups 1 to N, the priority order is set, and the priority ringing mode is set. When there is an incoming call in the state, the number of groups for performing the ringing operation is controlled to be sequentially increased in the order of priority 1 to N. Therefore, as in the past, not all telephones start ringing immediately when they do not respond while another phone with priority set is performing ringing operation. it can. In addition, the telephone that has started ringing continues to ring until there is a response or the other party's call is stopped. It is possible to avoid such an inconvenience that a response cannot be made thereafter even though the operation is performed.

In the above-mentioned embodiment, the number of groups for performing the ringing operation is increased every n calls, but the increase timing is obtained not by the number of calls but by the calling time. You may do it. In that case, in step ST6 of FIG. 5, it may be determined whether or not the calling time has exceeded a predetermined time.

Further, in the above-described embodiment, all of the master unit 1 and the slave units 2 _-1 to 2 _-m are grouped into 1 to N and the priority order is set so that they all ring finally. It was done. However, it is conceivable that some phones do not have all phones grouped and no priorities are set.In that case, after all the phones for which priority is set ring, further priorities are set. You may make it ring the telephone which is not set.

[0047]

According to the present invention, when a plurality of telephones of a master unit and a slave unit are grouped and a priority order is set and a call is received in the priority ringing mode, the ringing operation is performed. Since the number of groups to be executed is controlled to increase sequentially in the order of priority, all phones start ringing immediately when one of the prioritized phones does not respond while performing ringing. However, it is possible to prevent the meaning of priority setting from fading. In addition, the telephone that has started the ringing operation continues the ringing operation until there is a response or the call of the other party stops, and the phone that executes the ringing operation can be switched sequentially as in the conventional case. In this way, it is possible to avoid the inconvenience of not being able to respond after the ringing operation has been performed.

[Brief description of drawings]

FIG. 1 is a system diagram showing an embodiment of a telephone device according to the present invention.

FIG. 2 is a system diagram showing a configuration example of a master unit according to the embodiment.

FIG. 3 is a system diagram showing a configuration example of a line control unit and the like of a parent device.

FIG. 4 is a system diagram showing a configuration example of a slave unit of the embodiment.

FIG. 5 is a flowchart showing a ringing operation when an incoming call is received in the embodiment.

FIG. 6 is a system diagram showing an example of a telephone device including a master unit and a plurality of slave units.

FIG. 7 is a flowchart showing an example of a ringing operation of a conventional telephone device when an incoming call is received.

FIG. 8 is a flowchart showing an example of a ringing operation of a conventional telephone device when an incoming call is received.

[Explanation of symbols]

1 Master unit 2 _{-1 to} 2 _-m Slave unit 101 Line control unit 102 Voice path control unit 103 Handset 104, 204 Speaker 105, 203 Wireless modulation / demodulation unit 106, 206 Microcomputer 107, 202 Wireless unit 108, 201 Antenna 109, 205 Microphone 110,207 Ring tone output section 111,208 Key input section 112,210 Setting state storage section 113 Display section 114 DTMF modulation section 115 Incoming call detection section 116 Hook state detection section 117 Line disconnection detection section 209 Call key

Claims (1)

[Claims] 1. In a telephone device comprising a plurality of telephones, a master and a slave, an incoming call detecting means for detecting an incoming call and a priority order setting for grouping the plurality of telephones and setting a priority order. Means, a mode setting means for setting the priority ringing mode, and when the incoming call detection means detects an incoming call in the state where the priority ringing mode is set by the mode setting means, the priority order setting means sets And a ringing control means for causing the ringing operation of the plurality of telephones by sequentially increasing the number of groups in the order of priority given.