JPH1042361A - Portable telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically control a system in accordance with the propriety of the ringing of an incoming call by providing a means for detecting whether a base station exists in an incoming sound transmission inhibition area or not based on information from the base station at the time of the incoming call to a radio slave machine and controlling the ringing and non-ringing of an incoming sound to the radio slave machine in accordance with the detection output. SOLUTION: An exchange transmits and sets incoming call non-ringing information to the base station in the incoming sound transmission inhibition area. The base station transmits position registration data containing incoming call non-ringing information at prescribed electromagnetic wave intensity. When the power of the radio slave machine 5 is supplied, CPU 57 is started and the presence or absence of the reception of position registration data from the base station is judged. When the existence is recognized, an automatic answering mode where the incoming sound is not rung is set. When the incoming call from the base station is received, a recording/ reproduction part 61 is started, a response message is transmitted and an important message is recorded. That the recording of the important message exists is displayed on a display part 62 after movement to the area of the other base station and it is reported to the possessor of the radio slave machine 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone system comprising an exchange, a base station, a wireless terminal, and the like.

[0002]

2. Description of the Related Art In this type of portable telephone system, when incoming data by a radio signal arrives from a base station, the wireless slave unit receives the incoming data and sounds a buzzer or the like to notify the incoming call. I have. Here, when a predetermined key of the keyboard is operated on the wireless slave device side, the key is returned to the base station as response data, thereby realizing an incoming response call of the wireless slave device.

[0003] As described above, this type of portable telephone system has been spreading rapidly in recent years, since the owner of the wireless handset can call the owner of the wireless handset regardless of the location. However, there is a problem in that the wireless handset side unnecessarily sounds a ringing tone when an incoming call arrives, which causes trouble to the surroundings. For this reason, it has been considered that a changeover switch is provided in the wireless slave device, and the holder operates the changeover switch in a place where the user does not want to ring the incoming call so that the incoming call does not sound when an incoming call is received.

[0004]

However, if the owner of the wireless handset forgets to operate the changeover switch, there is a problem that the incoming call sounds when the user does not want to make the incoming call sound and the surroundings are inconvenienced. Accordingly, it is an object of the present invention to automatically control the ringing / non-ringing of a ring tone according to the necessity of ringing of a wireless handset.

[0005]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention determines whether or not a wireless handset is in a ringtone transmission prohibition area based on ringtone transmission prohibition information from a base station. There is provided a detecting means for detecting, and a control means for controlling either ringing or non-ringing of a ringing tone to the wireless handset in accordance with a detection output of the detecting means at the time of an incoming call to the wireless handset. Therefore, at the time of an incoming call, either the ringing or non-ringing of the ringing tone of the wireless handset is controlled according to the ringing tone transmission prohibition information. An answering machine function that automatically responds to an incoming call, sends out a response message, and records a message from the other party, and when a call arrives at the wireless handset, sounds a ringtone to the wireless handset according to the detection output of the detection means. Control means for performing either control of operating the answering machine function with the ringing tone non-ringing. Therefore, at the time of an incoming call, either the ringing of the ring tone or the operation of the answering machine function unit is automatically controlled in accordance with the ring tone transmission prohibition information.
Further, the detection means, the answering machine function section and the control means are provided in the wireless handset. Further, a detection means, an answering machine and a control means are provided in the exchange. Further, the base station transmits the ringing tone transmission prohibition information at the time of registering the position of the wireless handset, and causes the detecting means to detect it. The base station receives and stores ringtone transmission prohibition information from the exchange in advance. Further, the wireless handset prohibits the calling operation when receiving the ringing tone transmission prohibition information from the base station. When the detection means detects ringtone transmission prohibition release information for releasing the prohibition of ringtone transmission from the base station, if a message from the other party is recorded in the answering machine function section, the message is transmitted wirelessly. The playback control is performed on the slave unit. When the detection means detects the ringtone transmission prohibition release information from the base station, if a message from the other party has been recorded, it indicates that a message has been recorded.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 3 is a block diagram of the exchange 100 constituting the mobile phone system of the present invention. Exchange 100
Transmits / receives signals via a trunk line 103 to / from a subscriber interface 101 for accommodating a base station (wireless base station) to be described later as a subscriber, a switch 102 as a communication path switch, and another exchange via an external line L. And a central controller 1 for controlling the above-described units.
05 and a memory 106. The subscriber interface 101 is provided with a recording / reproducing unit 101A for providing an answering machine function service to each contracted subscriber.

Next, FIG. 2 is a block diagram showing the configuration of the base station 4 connected to the exchange 100 as a subscriber unit. The base station 4 includes a wireless transmission / reception unit 41 for performing wireless communication with a wireless slave unit, a modem demodulator 42 for demodulating data received from the wireless slave unit, a channel codec 43,
45, an audio codec 44 for performing digital / analog conversion of an audio signal, a modem modulator 46 for modulating data received from the base station 4 and sending it to the wireless transmission / reception unit 41, and a radio for controlling communication with the wireless slave unit. A processing CPU 47, a line processing CPU 48 for controlling communication with the exchange 100, a line interface 49 as a communication interface with the exchange 100, and an IDR in which the ID code of the base station 4 is stored.
It comprises an OM 50A and a memory 50B.

The radio transmission / reception section 41 includes an antenna switch 411, a reception amplifier 412, a first mixer 413, a second mixer 414, an intermediate frequency generation section 415, and a quadrature modulator 4
16, the third mixer 417, the transmission amplifier 418, and the first
To a third mixer and a synthesizer 419 for controlling the frequency of the quadrature modulator. Here, the reception amplifier 412 and the transmission amplifier 418 each have an attenuator 4.
12A and 418A are built in and controlled by the wireless processing CPU 47. That is, when the wireless area of the base station 4 includes a movie theater, the CPU 4 of the base station 4 is set so that only the wireless slave units existing in the movie theater can receive radio waves from the base station.
Numeral 7 controls the value of each attenuator according to the distance between the base station and the movie theater to adjust the radio field intensity.

That is, when the distance between the base station 4 and the movie theater is large, the output levels of the transmission radio waves and the reception radio waves of the base station 4 are increased, and when the distance is short, the levels of the transmission radio waves and the reception radio waves are reduced. Adjust to make it smaller. This adjustment value is, specifically, transmitted by the base station 4 to the wireless handset in the movie theater, and the strength of the response radio wave from the wireless handset to the call,
Alternatively, the transmission / reception unit 4 transmits the radio wave transmitted from the wireless handset in the movie theater.
The voltage level is detected by the CPU 47 via the intermediate frequency generator 415 in the memory 1 and is set in the memory 50B in advance. Thereafter, a radio wave having an intensity according to the set value of the memory 50 is transmitted from the base station 4.

The wireless processing CPU 47 transmits control data indicating operation information and the like from the wireless slave device 5 to the wireless transmitting / receiving unit 41, the modem demodulator 42, and the channel codec 4.
3, the control data is transmitted to the line processing C
Send to PU48. The line processing CPU 48 transmits the control data to the exchange 100 via the line interface 49.
Send to the side. On the other hand, when the line processing CPU 48 receives the control data from the exchange 100 via the line interface 49, the control data is transmitted to the wireless processing CPU 47.
Send to The wireless processing CPU 47 sends the received control data to the channel codec 45. As a result, the control data is transmitted to the wireless slave via the channel codec 45, the modem modulator 46, and the wireless transceiver 41.

In response to such a flow of control data, voice data from the wireless handset via the wireless transmission / reception unit 41, the modem demodulator 42 and the channel codec 43 is transmitted to the voice codec 44. Then, the signal is converted into an analog signal by the voice codec 44 and transmitted to the exchange 100 via the line interface 49. The voice signal from the exchange 100 via the line interface 49 is converted into a digital signal by the voice codec 44 and transmitted to the wireless slave via the channel codec 45, the modem modulator 46, and the wireless transmitting / receiving unit 41. .

FIG. 1 is a block diagram showing the configuration of a wireless client 5 wirelessly connected to the base station 4. As shown in FIG. As shown in the figure,
The wireless handset 5 includes a wireless transmission / reception unit 51 having the same configuration as the wireless transmission / reception unit 41 of the base station 4, a modem demodulator 52, channel codecs 53 and 55, a voice codec 54, and a modem demodulator 56. The CPU 57 that controls the wireless slave device 5 includes a keyboard 58 such as a dial key,
ID ROM 59 for storing an ID code, vibrating motor receiving mechanism 60, recording / reproducing unit 6 for recording / reproducing audio signals
1, a display unit 62, and a buzzer 63 (ringing ringing unit) that rings when receiving an incoming call are connected to each other. Further, a receiver 64 and a microphone 65 are connected to the audio codec 54.

The receiving amplifier 5 in the radio transmitting / receiving section 41
As in the base station 4, attenuators 512A and 518A are built in the transmission amplifier 12 and the transmission amplifier 518, respectively.
Is controlled by That is, when the holder of the wireless slave device 5 enters a wireless area (for example, a movie theater) of the base station 4 and performs a position registration described later, the intensity of the radio wave received from the base station 4 is determined via the intermediate frequency generation unit 515. Upon detection, the CPU 57 controls the attenuators 512A and 518A to adjust appropriate levels of the transmission radio wave and the reception radio wave according to the reception radio wave level.

The base station 4 is a PHS (Personal Handy Phone System) base station, and the wireless handset 5 is a PHS wireless telephone. In the base station 4 of such a PHS system, the IDROM is periodically registered via the control channel of the wireless transmission / reception unit in order to register the location of the wireless handset 5.
It transmits its own ID code within 50A. Here, when the holder of the wireless slave device 5 enters the wireless area of the base station 4 and receives the ID code from the base station 4, the wireless slave device 5 returns its own ID code in the ID ROM 59 to the base station 4. As a result, the base station 4 registers the ID code of the wireless slave device 5 in the memory 50B, transmits the ID code to the exchange 100, and registers the ID code in the memory 57A of the wireless slave device 5.
D by registering the location registration data including D.
Is registered.

When the base station 4 detects the incoming call addressed to the wireless handset 5 after the position registration of the wireless handset 5 is performed at the base station 4, the incoming data is sent to the wireless handset 5 whose position has been registered. Notify an incoming call. In addition, the base station 4 also allows a calling operation of the wireless slave device 4 whose position is registered. Here, for example, when the buzzer 63 sounds in the wireless slave device 5 at the time of an incoming call, there is a problem that the surroundings may be troubled depending on the location. In other words, if the buzzer 63 rings when the owner of the wireless handset 5 receives a call while watching a movie in a movie theater, for example, it gives a great deal of trouble to the surroundings.

Therefore, when the base station 4 is installed in a movie theater or the like, the switch 100 transmits incoming non-ringing information to the base station 4 to set it. That is, in the memory 106 of the exchange 100, information as to whether to ring a ring tone such as ringing ring information or ringing non-ringing information is stored in advance in combination with the ID of each base station, and when the base station is installed. When the ID of the base station is sent, central control unit 105 searches memory 106 to check whether or not the non-ringing information is set corresponding to the ID. If so, the terminal transmits the non-ringing information to the corresponding base station. In this case, when the wireless processing CPU 47 of the base station 4 receives the incoming call non-ringing information via the line processing CPU 48, it sets the incoming call non-ringing information in the memory 50B. The information is transmitted to the wireless client device 5 and stored.

Normally, when the base station 4 registers the location of the wireless handset 5, its ID code is the broadcast channel BC of the PHS.
It is transmitted to the wireless handset 5 by the CH. Therefore, in the base station 4, when the incoming call non-ringing information from the main device 1 is set in the memory 50B, the broadcast channel BCCH
Transmits the incoming call non-ringing information to the wireless handset 5 simultaneously with the position registration data including the ID code. Upon receiving the incoming non-ringing information, the CPU 57 of the wireless handset 5 sets the information in the internal memory 57A. In this case, when receiving the incoming data transmitted at the time of the incoming call from the base station 4, the internal memory 57A
After the incoming call non-ringing information is set, the incoming call is displayed on the display unit 62 without performing the incoming call ringing by the buzzer 63. Then, after a certain period of time, it automatically responds to this incoming call and sends a response message stating that "I can't answer the phone right now. Then, the recording / reproducing unit 61 is activated to make the recording / reproducing unit 61 record a message from the other party. Then, a message indicating that the message is being recorded is displayed on the display unit 62. Therefore, in a place such as a movie theater, the ringtone does not sound, so that it is possible to prevent troublesome surroundings.

In this case, the owner of the wireless slave device 5 operates the playback key in the keyboard 58 of the wireless slave device 5 after confirming from the display state of the display section 62 that the message is recorded. Then, the message of the recording / reproducing unit 61 is reproduced and transmitted from the receiver 64 or a speaker (not shown), so that the message of the other party can be heard. In addition, when the incoming call non-ringing information is set in the base station 4, the information is transmitted and set from the exchange 100 side. However, a switch may be provided in the base station 4 and set by switching the switch. .

FIG. 4 is a flowchart showing the operation of the CPU 57 of the wireless handset 5 for setting the incoming call mode and the operation at the time of incoming call. The operation of the main part of the present invention will be described in detail according to this flowchart. When the wireless area includes a movie theater, the base station 4 transmits position registration data and the like with the radio wave intensity adjusted in advance as described above. Here, when the power of the wireless slave device 5 is turned on in step S1, the CPU 57 is activated and starts processing. In this case, the CPU 57 first determines in step S2 whether or not the location registration data including the above-described incoming non-ringing information has been received from the base station 4. If the location registration data has been received and the data includes the incoming non-ringing information, it is determined as “N” in step S2. In such a case, the wireless handset 5 is in the wireless area of the base station 4 installed in, for example, a movie theater or the like. Set.

After the answering machine mode is set in this way, it is determined in step S3 whether there is an incoming call from the base station 4. Then, when there is an incoming call from the base station 4 and the incoming data is received in step S4, in step S5, response data is transmitted to the base station 4 side to respond to the incoming call, and the recording / reproducing unit 61 is activated to send the response to the other party. Send a response message and record a business message from the other party. Next, after the recording of the message of the other party is completed, an area move (roaming) in which the holder moves to the wireless area of another base station while carrying the wireless slave device 5 is performed in step S6.
In step S7, the CPU 57 determines again whether or not the position registration data has been received.

When the location registration data including the ringing / non-ringing information is received from the new base station, "Receive only location registration data" in step S7 is determined to be "N". In this case, the CPU 57 returns the process to step S3 to determine whether or not there is an incoming call again, and when an incoming call arrives, automatically responds to this and records a message from the other party. If only the location registration data has been received from the new base station, "Receive only location registration data" in step S7 is determined to be "Y". In this case, the CPU 57 determines in step S8
To set the ring tone mode in the memory 57A instead of the answering machine mode.

Then, the process shifts to step S9 where the display unit 6
In step 2, a message "recorded message" is displayed to notify the owner of the wireless client device 5 that a message from the other party has been recorded. When the holder operates the play key on the keyboard, noticing the recording notification, the message is reproduced in step S10, and the message is transmitted to the holder. Thereafter, when the incoming data is received from the new base station in step S11, in step S12
Then, the buzzer 63 is driven to make the buzzer 63 ring.

If only the location registration data is received from the base station when the power is turned on and the incoming call non-ringing information cannot be received, the "receive location registration data only" in step S2 is determined to be "Y". In step S13, a ring tone mode is similarly set in the memory 57. In this case, when the incoming call data is received in step S14, the ring tone is similarly sounded from the buzzer 63 in step S15. Further, when the location registration data including the non-ringing information of the incoming call is received, if there is no incoming call and the area movement is performed in step S16, the CPU 57 determines again whether or not the location registration data is received in step S17. . Then, when only the location registration data is received from the new base station, the ring tone mode is set in step S13, the ring tone is sounded when an incoming call is received, and the location registration data including the ringing non-ringing information is received. The process returns to step S3 to perform an answering machine operation at the time of an incoming call.

As described above, according to the location of the wireless slave device 5, it is automatically selected whether to make a ring tone or an answering machine at the time of an incoming call.
As a result, when the holder of the wireless handset 5 is in a quiet area such as a movie theater, the non-ringing information is transmitted from the base station installed at that location when the location of the wireless handset 5 is registered. Since the setting is made, the answering machine can perform an answering machine without ringing the incoming call at the time of receiving an incoming call, so that it is possible to avoid annoying to the surroundings and to surely give the owner of the wireless handset 5 a requirement. Can communicate.

The above operation is performed by the recording / reproducing unit 6
5 is an example in which an answering machine is operated when an incoming call is received, and FIG. 5 and FIG. 6 are flowcharts showing an operation when an answering machine is performed by the recording / reproducing unit 101A provided in the exchange 100 side. First, the operation of the base station 4 shown in the flowchart of FIG. If the base station 4 is installed in an area including a movie theater or the like, information indicating that this base station is installed in the call prohibited area is set in the memory 50B in step S21 based on information from the exchange. At the same time, an answering machine mode is set to indicate that the recording / reproducing unit 101A is installed on the exchange 100 side. Further, the radio wave is transmitted with the intensity adjusted in advance as described above.

Then, in the next step S22, the wireless client 5
In response to this, the transmission / reception prohibited area information and the telephone answering machine mode information set in the memory 50B are transmitted together with the location registration data. Here, the location registration data from the wireless handset 5 that has moved to the area of the base station 4 is stored in step S23.
, The base station 4 registers the position of the wireless client 5 and, in step S24, the ID of the registered wireless client 5
And the answering machine setting data are transmitted to the exchange 100 so that the answering machine operation is performed when an incoming call arrives at the slave unit.

By the way, the fact that the wireless slave device 5 which has performed the location registration moves to an area of another base station (an area which is not the calling / prohibited area) or the power of the wireless slave device 5 is turned off. If detected in step S25, the exchange 100 is controlled to transmit the callable / receivable area information of the registered wireless client 5 to validate the incoming call to the wireless client 5 in step S26.

When the exchange 100 responding to the operation of the base station 4 receives the ID of the registered wireless terminal 5 and the answer phone setting data from the base station 4 in step S31 of FIG. Is stored in the memory 106. When there is an incoming call to the registered wireless handset 5, the recording / reproducing unit 10 automatically responds to the incoming call in step S32.
Record the message of the other party in 1A.

Thereafter, in step S33, when the location registration information of the registered wireless client 5 is received from another base station (a base station in a callable area), the absence of the wireless client 5 stored in the memory 106 is recorded. Record setting data in step S34
To delete the answer phone mode of the wireless slave device 5 and set the ring tone mode. Then, it is determined in step S35 whether or not a message for the registered wireless client 5 has been recorded in the recording / reproducing unit 101A.
If a business message is addressed to the base station 4
And calls the corresponding wireless client device 5 through step S36.
Notifies that the message has been recorded. Here, when the response of the corresponding wireless slave unit 5 is detected, the message in the recording / playback unit 101A is played back in step S37, and
Send to the side for listening.

Next, the operation of the wireless handset 5 responding to the respective operations of the base station and the exchange shown in FIGS. 5A and 5B will be described with reference to the flowchart of FIG. When the power is turned on in step S41, it is determined in step S42 whether or not the location registration data including the above-mentioned calling / receiving prohibited area information and the answering machine mode information has been received from the base station 4. Here, if the location registration data is received and the data includes the call origination / prohibition area information and the telephone answering machine mode information, it is determined as "N" in step S42.
In this case, the wireless handset 5 is in the wireless area of the base station 4 installed in a movie theater, for example.
In step S43, the call origination / prohibition area information and the telephone answering machine mode information are set in the memory 57A, and location registration for returning the own ID to the base station 4 for registration is performed.

Next, when an area movement in which the holder moves to a wireless area of another base station while carrying the wireless slave device 5 is performed in step S44, the CPU 57 proceeds to step S7.
It is determined again whether or not the location registration data has been received, and when location registration data including the call origination / prohibition area information and the answering machine mode information is received from the base station, step S
Returning to step 43, the same processing is performed. That is, when the wireless slave device 5 is moving between the base stations in the calling / prohibited area, the wireless slave device 5 repeatedly executes the processes in steps S42 to S45. During this time, incoming calls to the wireless handset 5 and outgoing calls of the wireless handset 5 are prohibited. If there is an incoming call to the wireless handset 5, a message from the other party is recorded on the exchange 100 side.

In such a situation, if only the location registration data is received from the base station and "Y" is determined in step S45, the CPU 57 stores the ID of the base station in the memory 57A.
The location registration for registering D is performed in step S46, and the ringtone mode is set as the incoming mode. At this point, if the message to the wireless slave device 5 has already been recorded on the exchange 100 side by this time and the result is "Y" in step S48, the exchange 100 notifies that there is a message recording as described above. A call is made, resulting in step S4
At 9, an incoming call to that effect arrives at the wireless handset 5, and the incoming call is displayed on the display unit 62 of the handset 5. When the owner of the wireless slave device 5 notices this and performs a response operation, the response message is transmitted to the exchange 100, the message is reproduced in step S50, and is heard by the holder transmitted to the wireless slave device 5. . Then, in step S51, the mode shifts to the normal calling / receiving mode. Therefore, the outgoing / incoming call of the wireless slave device 5 is permitted thereafter, and a ringtone sounds at the time of incoming call.

On the other hand, if only the location registration data is received from the base station and the "receive location registration data only" of step S42 is determined to be "Y", the CPU 57 determines in step S52 the location for registering the ID of the base station in the memory 57A. At the same time, registration is performed, and in step S53, a ring tone mode is set instead of the outgoing / incoming call prohibition mode. Then, in step S51, the mode shifts to a normal calling / receiving mode, and a normal calling / receiving operation is performed.

As described above, when a call arrives at the wireless slave device 5 existing in an area where quietness is required, such as a movie theater, a message addressed to the wireless slave device 5 is provided by the recording / reproducing unit 101A provided on the exchange 100 side. Is recorded so that the ringtone does not ring. In the present embodiment, the base station 4 transmits incoming non-ringing information, outgoing / incoming call prohibition area information, and the like to the wireless handset 5 at the time of registering the location of the wireless handset 5, and sets the information. The information may be transmitted when an incoming call arrives at the terminal 5. In this case, the setting of the information in the memory 57 </ b> A can be omitted in the wireless slave device 5. Further, in the present embodiment, the recording / reproducing unit is provided in the wireless slave device 5 or the exchange 100, but may be provided in the base station.

In the present embodiment, when a movie theater is included in the wireless area of the base station, the base station adjusts its transmission radio field intensity in advance so that the radio waves can be received only by the wireless handsets existing in the movie theater. Although the transmission / reception prohibited area information and the like are transmitted with the adjusted radio wave intensity, the base station transmits the transmission / reception prohibited area information and the like only to the child device by recognizing the presence of the wireless sub device in the movie theater. You can also. That is, the base station 4
First, the intensity of the radio wave transmitted from the wireless handset in the movie theater is detected in advance and set in the memory 50B. Then, when the radio wave intensity from each wireless handset in the wireless area is input, the input value and By comparing the set value with the set value, it is possible to recognize whether or not the slave unit exists in the movie theater. And
The above-mentioned transmission / reception prohibited area information and the like are transmitted only to the child device having the ID whose input radio field intensity substantially matches the set value, and the answering machine function is operated at the time of an incoming call.

[0036]

As described above, according to the present invention, at the time of an incoming call, either the ringing or non-ringing of the ring tone of the wireless slave unit is controlled in accordance with the ring tone transmission prohibition information. If the handset is located in an area where quietness is required, such as a movie theater, the base station sends ringtone transmission prohibition information, so the ringtone does not ring when an incoming call arrives, thus preventing inconvenience to others. can do. Also, at the time of an incoming call, the operation of one of the ring tone ringing unit and the answering machine function unit is automatically controlled in accordance with the presence or absence of the ringtone sending prohibition information. Can be notified of incoming calls. In addition, the base station transmits the ringtone transmission prohibition information to the wireless slave unit or the exchange at the time of registering the position of the wireless slave unit, so that the ringtone transmission prohibition information can be transmitted at an appropriate transmission timing. Further, since the base station previously receives and stores the ringtone transmission prohibition information from the exchange, accurate information can be set in the base station. Also, since the wireless handset prohibits the transmission operation when receiving the ringtone transmission prohibition information from the base station, transmission of the handset is also prohibited in the area where the quietness is required,
Therefore, it is possible to completely prevent the trouble to the surroundings. Also, when the base station detects ringtone transmission prohibition release information, if a message from the other party has been recorded, this message is played back. The message can be transmitted to the slave without any trouble. In addition, when a message from the other party is recorded when the ring tone transmission prohibition release information is detected from the base station, a message indicating that the message has been recorded is displayed. Can be reliably notified that the message has been recorded upon receiving a call.

[Brief description of the drawings]

FIG. 1 is a block diagram of a wireless handset constituting a mobile phone system of the present invention.

FIG. 2 is a block diagram of a base station included in the system.

FIG. 3 is a block diagram of an exchange constituting the system.

FIG. 4 is a flowchart illustrating an operation of a main part of the wireless slave device.

FIG. 5 is a flowchart showing an operation of a main part of the base station and the exchange.

FIG. 6 is a flowchart illustrating another operation example of the wireless client device.

[Explanation of symbols]

4 ... base station, 5 ... wireless handset, 41, 51 ... wireless transmitting and receiving unit, 47, 48, 57 ... CPU, 50A, 59 ... IDR
OM, 50B, 57A, 106 ... Memory, 61, 101
A: Recording / reproducing unit, 62: Display unit, 63: Buzzer, 100
... switch, 105 ... central control unit, L ... outside line.

Claims (9)

[Claims] 1. A base station having a wireless area, an exchange connected to the base station via a wired line, and a wireless slave unit wirelessly connected to the base station and having a ring tone ringing unit for ringing a ring tone Detecting means for detecting whether or not the wireless handset is in the ringtone prohibited area based on the ringtone sending prohibition information from the base station; and A mobile phone system comprising: a control unit that controls either ringing or non-ringing of a ring tone to the wireless handset in accordance with a detection output of the detecting unit. 2. A base station having a wireless area, an exchange connected to the base station via a wired line, and a wireless slave unit wirelessly connected to the base station and having a ring tone ringing unit for ringing a ring tone. An answering machine function for automatically answering an incoming call and recording a business message from the other party after sending a response message, and determining whether or not the wireless handset is in a ringtone sending prohibited area. Detecting means for detecting based on ringtone transmission prohibition information from the station;
At the time of an incoming call to the wireless handset, either one of a ringing tone for the wireless slave unit or a non-ringing tone for the ringing tone to operate the answering machine function is performed according to the detection output of the detecting means. A mobile phone system comprising control means. 3. The mobile phone system according to claim 2, wherein the detection means, the answering machine and the control means are provided in a wireless handset. 4. The mobile phone system according to claim 2, wherein said detecting means, the answering machine and the control means are provided in an exchange. 5. The mobile phone system according to claim 1, wherein the base station transmits the ringtone transmission prohibition information at the time of registering the position of the wireless handset, and causes the detection unit to detect the ringtone transmission prohibition information. 6. The mobile phone system according to claim 2, wherein the base station previously receives and stores the ringing tone transmission prohibition information from the exchange. 7. The mobile phone system according to claim 5, wherein the wireless handset prohibits the calling operation when receiving the ringing tone transmission prohibition information from the base station. 8. The answering machine according to claim 2, wherein when the detection means detects ringtone transmission prohibition release information for releasing the prohibition of transmission of the ringtone from the base station, a message from the other party is recorded in the answering machine function unit. A mobile phone system for controlling the reproduction of the business message to the wireless handset if the mobile phone system is in use. 9. The message recording device according to claim 2, wherein when the detecting means detects ringtone transmission prohibition release information for releasing the prohibition of transmission of the ringtone from the base station, a message from the other party is recorded in the answering machine function unit. A mobile phone system for displaying a message indicating that a message has been recorded.