JPH0662455A - Radio telephone system - Google Patents

Abstract

PURPOSE:To call a desired portable telephone set just with a series of key operations required for calling an extension regardless of the presence or absence of the relevant telephone set in a calling area in regard of a radio telephone system which can be applied to another radio telephone system to which a portable telephone set controlled by itself is connected via a communication circuit. CONSTITUTION:A ROM 21 stores the extension and outside line numbers opposite to each other for the portable telephone sets. If the portable telephone set that is called and designated through an extension with operation of keys of a key input part 22 is not included in a calling area, the DTMF code corresponding to the extension call number stored in the ROM 21 is outputted to a voice CODEC part 16 from a DTMF code memory 25. Thus the DTMF signal corresponding to an outside line call number is outputted from a circuit interface part 11 and the relevant telephone set is called in another radio telephone system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises at least two telephones including a mobile telephone and a radio base station for establishing a radio line between these telephones, and the mobile telephone is a radio base station via a communication line. The present invention relates to a wireless telephone device that can be used in other wireless telephone systems connected to the.

[0002]

2. Description of the Related Art As a telephone system related to a wireless telephone device, there is, for example, a second-generation cordless telephone system currently under study in Japan. This second-generation cordless telephone system is based on PSTN (Public Switched Tele
phone network) and ISDN (Integrated Services Digi)
used in general homes and businesses by connecting multiple public wireless base stations and a control center that controls communication via these wireless base stations to an existing communication network such as By registering the mobile phone of the cordless telephone device in the control center, the mobile phone of the cordless telephone device can be used outdoors like the ordinary mobile phone. In other words, this telephone system allows the same mobile phone to make and receive calls from anywhere, not only in private areas such as homes and offices, but also outdoors. .

In this telephone system, when the mobile phone of the cordless telephone device is registered in the control center, the calling method for calling the mobile telephone registered by the other telephone of the cordless telephone device is as described above. Differs depending on whether the mobile phone is at home or in the office or taken outside. That is, when the mobile phone is in a home or office, it can be called via a private wireless base station installed in the home or office as in the case of a conventional cordless telephone device. Dial operation to operate, that is, after operating the extension selection key, perform the dial operation to enter the extension number,
On the other hand, when the mobile phone is taken out of the outdoors, it must be called through the communication network and the public wireless base station, so the dial operation for calling the outside line is performed.

[0004]

However, in this telephone system, since the mobile phone of the cordless telephone device can be used outdoors as described above, the user of the mobile phone does not need to inform his family or colleagues of his / her whereabouts. In some cases, you are out and carry your mobile phone.

In such a case, first, the person who is needed by the user performs a dial operation for calling the mobile phone carried by the user by extension as if the user is at home or in the office. After that, the dial operation for calling the outside line must be performed again. Therefore, there is an inconvenience that the dial operation for calling becomes complicated.

[0006] Such inconvenience is not limited to the above-mentioned second generation cordless telephone system, but other complex wireless telephone systems, for example, cordless telephone devices independently installed at a plurality of business establishments are used for exclusive lines. This also occurs in a system in which the mobile phone of each cordless telephone device can communicate with the wireless base station of the cordless telephone device of another office by connecting with each other.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to perform a series of key operations regardless of whether or not the portable telephone to be called is in the extension calling area. It is to provide a wireless telephone device capable of calling the mobile phone.

[0008]

According to the present invention, there is provided at least two telephones including a mobile telephone and a radio base station for establishing a radio line between these telephones, and the mobile telephone is adapted to perform the wireless communication via a communication line. In a radiotelephone device that can also be used in another radiotelephone system connected to a base station, an extension call number for calling the mobile phone via the radio base station and the mobile telephone in the other radiotelephone system A calling number storage means for storing an outside line calling number for calling via a wireless base station in association with each other, and an extension calling mode or an outside line calling mode is set by the mobile phone and another phone, and based on the set mode. And a call control means for making an extension call or an outside call, and the call control means is set to an extension call mode for calling the portable telephone by extension. At this time, the call control means is provided with an outside line calling command means for outputting a command signal for sending the outside line calling number stored in the calling number storage means corresponding to the extension calling number of the mobile phone to the communication line. It becomes.

More specifically, the outside line calling command means more specifically determines whether or not the portable telephone is within the calling area of the wireless telephone device, and automatically outputs the command signal when it is determined that the portable telephone is not within the calling area. Or the manual operation switch provided on the calling side telephone which designates the portable telephone as an extension call.

[0010]

According to the present invention, when the call control means is set to the extension call mode for calling the portable telephone by extension, the call control means is associated with the extension calling number of the portable telephone in the calling number storage means. Since an outside line calling command means for outputting a command signal for sending the stored outside line calling number to the communication line is provided, when the mobile phone is not in the calling area of the wireless telephone device, it is automatically Alternatively or with a simple switch operation, the mobile phone can be called via a radio base station in another radio telephone system.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a schematic configuration of a second generation cordless telephone system.

In FIG. 1, reference numeral 1 denotes an existing communication network consisting of PSTN, ISDN and the like. This communication network 1
Includes an ordinary fixed telephone 2, one wireless base station 3a and one
Cordless telephone device 3 including one or a plurality of mobile phones 3b, so-called system cordless telephone device 4 including a plurality of wireless base stations 4a and a plurality of mobile phones 4b, and multiple public wireless base stations 5 to 7 Also, a control center 8 for controlling communication via these public wireless base stations 5 to 7 is connected.

The cordless telephone device 3 is usually installed in a general home, and the radio base station 3a is directly connected to the subscriber line. The system cordless telephone device 4
Is usually installed at a business site, and the wireless base station 4a is
It is connected to a plurality of subscriber lines via a BX (Private Branch Exchange) 4c. A plurality of fixed telephones 4d are also connected to the PBX 4c.

The control center 8 has a subscriber storage unit, and only mobile phones registered in this subscriber storage unit can communicate via the public radio base stations 5-7. The mobile phone 3b of the cordless phone device 3, the mobile phone 4b of the system cordless phone device 4, and the other mobile phone 9 can be registered in the subscriber storage unit. The data registered in the subscriber storage unit includes an ID (Indentification) code of each mobile phone, a telephone number (a number for designating a call of the mobile phone from the fixed telephone 2 or the like), and the owner name of the mobile phone.

The control center 8 also has a position information storage unit for storing information about which public wireless base station the calling area (communication area) 5a to 7a of each subscribing mobile phone is.

When the telephone number of the mobile telephone registered in the subscriber storage unit is input from the fixed telephone 2 or the telephones of the cordless telephone devices 3 and 4, the control center 8 stores it in the position information storage unit. The calling area in which the mobile phone is located is determined based on the information, and the ID code of the mobile phone to be called is sent from the wireless base station in the calling area to call the mobile phone.

In the above-mentioned second-generation cordless telephone system, the calling method performed by the present invention can be applied to the cordless telephone device 3 and the system cordless telephone device 4.

Next, a case where the present invention is applied to the cordless telephone device 3 will be described. FIG. 2 is a diagram showing a circuit configuration of the wireless base station 3a of the cordless telephone device 3 to which the present invention is applied. Note that the wireless base station described in this embodiment is a wireless base station having a telephone function, and is provided with a dial key, a handset, and the like.

In FIG. 2, 11 is the communication line network 1 of FIG.
This is a line interface unit connected to the subscriber's line, and includes a call detection circuit for detecting a call from the subscriber line, a line connection switch for turning on / off the line connection, a speech network circuit, and the like. The call detection circuit and line connection switch of the line interface unit 11 are connected to the control unit 12, and the speech network is connected to the wireless communication unit 13 via a pair of input / output lines.

The wireless communication unit 13 is for performing wireless communication with the mobile phone 3b shown in FIG. 1, and is also connected to the control unit 12 to communicate with the control unit 12. It exchanges data such as control data.

A line switching circuit 14 controlled by the control unit 12 is provided at the pair of input / output lines connecting the line interface unit 11 and the radio communication unit unit 13.
A handset 15 is connected via a line, and the handset 15 is connected to both the line interface unit 11 and the wireless communication unit 13 by line switching by the line switching circuit 14.

The wireless communication unit 13 is for performing wireless communication with the mobile phone 3b as described above, and its circuit configuration differs depending on the modulation method and transmission method of the wireless signal. In the case of the second-generation cordless telephone system, the modulation method is π / 4 shift QPSK (Quarternary Ph
ase-Shift Keying) and the transmission method is TDMA-
TDD (Time Division Multiplex Access-Time Divis)
Ion Duplex) system, the wireless communication unit 13
Is composed of a voice codec unit 16, a frame processing unit 17, a digital modulation / demodulation unit 18, a transmission / reception unit 19 and an antenna 20.

The voice codec unit 16 converts an analog voice signal input from the line interface unit 11 or the handset 15 into a digital voice signal and sends the digital voice signal to the frame processing unit 17, or vice versa. It is a circuit unit that converts a signal into an analog voice signal and sends it to the line interface unit 11 and the handset 15.

The frame processing unit 17 is connected not only to the voice codec unit 16 but also to the control unit 12,
It is a circuit unit that transmits and receives communication control signals and digital audio signals based on the A-TDD system. That is, the control unit 12
A communication control signal from the mobile phone, for example, a calling number of the mobile phone (an ID code of the mobile phone) or a digital voice signal from the voice codec unit 16 is sent to the digital modulation / demodulation unit 18 at a predetermined timing, and conversely is received at a predetermined timing. The process of sending the signal from the digital modulation / demodulation unit 18 to the control unit 12 and the voice codec unit 16 is performed.

The digital modulation / demodulation section 18 is a π / 4 shift QPS modulated by the digital signal from the frame processing section 17.
K signal is sent to the transmitter / receiver 19 or π /
A circuit unit that demodulates the 4-shift QPSK signal into a digital signal and sends the digital signal to the frame processing unit 17.

The transmitting / receiving unit 19 converts the π / 4 shift QPSK signal into a UHF (Ultra High Frequency) band radio wave and transmits it from the antenna 20, or obtains the π / 4 shift QPSK signal from the radio wave received by the antenna 20. It is a circuit part.

The control unit 12 is a circuit unit for controlling communication and communication via the line interface unit 11 and the wireless communication unit 13 and other controls. The control unit 12 has a built-in microprocessor and a ROM (Read Onl
The above-mentioned control is performed based on the program stored in the (y Memory) 21.

The ROM 21 stores not only a control program but also management data for managing the ID code of the radio base station 3a itself and the mobile phone 3b. Figure 3
FIG. 3 is a diagram showing the details of a management data storage unit provided in the ROM 21 for storing the management data.
As shown in FIG. 3, the management data storage unit has an area for storing a management number of a mobile phone, an area for storing an ID code of the mobile phone, and an area for storing a phone number for calling the mobile phone via an outside line. For all mobile phones managed by the wireless base station, the management number, ID code, and telephone number of each mobile phone can be stored as a set of data.

One of the features of the present invention is as data for managing a mobile phone belonging to a cordless telephone device.
Not only the management number of each mobile phone and its ID code,
The point is that the telephone number for calling the mobile phone via an outside line is also stored.

The ID code of each mobile phone stored in the management data storage unit of the ROM 21 is used as a calling number when calling the mobile phone via the wireless communication unit 13, and the mobile phone requesting communication. It is used to determine whether the phone is a mobile phone managed by the wireless base station.

The control unit 12 is further provided with twelve dial keys for inputting dial data and the like and an extension selection key for selecting an extension call via the wireless communication unit 13. A key input unit 22, a RAM (Random Access Memory) 23 for storing dial data input from the key input unit 22, a display unit 24 for displaying dial data input from the key input unit 22, a key DTMF (Dual-Tone Multi-Frequency) corresponding to dial data input from the input unit 22
A DTMF code memory 25 for outputting a signal from the voice codec unit 16, a speaker 26 for notifying a call from a subscriber line or a call from a mobile phone, and a hook switch 27 for detecting that the handset 14 has been lifted. Are connected.

Next, a calling process for calling the mobile phone 3b managed by the radio base station 3a using the telephone function of the radio base station 3a shown in FIG. 2 will be described with reference to the flowchart shown in FIG.

In this embodiment, in the case of extension call,
After the handset 15 is off-hook, the extension selection key is operated and the dial key for inputting the extension number is operated. In the case of an outside call, the handset 15 is off-hook and the telephone number of the telephone to be called is input. In the following description, it is assumed that the dial key is operated and that the control unit 12 once turns on the line connection switch in the line interface unit 11 when the handset 15 is off-hook even when calling the extension.

When the handset 15 is off-hook,
The control unit 12 repeatedly executes the determination as to whether the extension selection key of the key input unit 22 has been operated (step S1) and the determination as to whether the dial key has been operated (S2).

When it is detected in step S1 that the extension selection key is operated, the extension mode is set in step S3, and the line interface unit 1 is set in step S4.
After turning off the line connection switch in step 1, step S1
Return to.

When it is detected in step S2 that the dial key has been operated, it is determined in step S5 whether or not the extension mode is set. If the extension mode is not set, the process proceeds to step S6, the DTMF code memory 25 is accessed based on the key code of the operated dial key, and the DTMF code memory 25 is accessed.
To output a DTMF code corresponding to the key code. DTM output from the DTMF code memory 25
The F code is converted to a DTMF signal by the voice codec unit 16 and then output to the communication line network 1 through the line interface unit 11 and the subscriber line, and the communication line network 1
It is recognized as one digit of the telephone number by the exchange, which is the interface with the subscriber's line.

After the processing of step S6 (access processing of the DTMF code memory 25) is completed, step S1
Return to and prepare for the next key input. If the extension mode is not set, the process of step S6
It is executed every time the dial key is operated.

As described above, after the off-hook of the handset 15, the dial key is operated without operating the extension selection key. This key operation is a dial operation for calling an outside line and is carried out outdoors. This dial operation is also used to call a mobile phone that is currently in use. That is,
After off-hooking the handset 15, the telephone number of the mobile phone to be called is input by operating the dial key of the key input unit 22. As a result, the information designating the mobile phone to be called is sent to the control center 8 shown in FIG.
7a, the corresponding public wireless base station 5
Can be called via 7.

If it is determined in step S5 that the extension mode is set, that is, if the extension selection key is operated prior to the operation of the dial key, the control unit 12 is instructed in step S7. After starting the built-in timer I, the extension calling process is started in step S8.

The extension calling process is a process for calling the corresponding mobile phone via the wireless communication unit 13 based on the extension number input by the dial key, that is, the management number of the mobile phone to be called. For example, when the dial key operated after the operation of the extension selection key is the key of the numerical value "1", that is, when the mobile phone of the management number 1 is designated to call, the management data storage unit of the ROM 21 is stored. The ID code “303” (see FIG. 3) corresponding to the management number 1 is read out from the stored ID codes of the plurality of mobile phones and is sent to the frame processing unit 17 of the wireless communication unit 13 to be wirelessly transmitted. A calling signal for calling the mobile phone with the management number 1 is transmitted from the antenna 20 of the communication unit 13.

The timer I is a timer that defines the time for performing this extension calling process, and the timer time allows the carrier of the mobile phone receiving the call to recognize the call by the call alert sound. In addition, it is sufficient if the time is enough to perform the key operation for responding to the call.

After the processing of step S8 is executed, it is judged whether or not there is a signal in response to the call from the mobile telephone having the management number 1 which has been called (step S9).
Then, the process of determining whether or not the timer I has timed out (step S10) is repeatedly executed.

If there is a signal for responding to the call from the portable telephone with the management number 1 before the timer I times out, steps S9 to S1.
The process proceeds to 1 to stop the extension calling process, set a channel for a call, and end the process. Step S1
When the call channel is set at 1, the call can be made thereafter between the handset 15 and the mobile phone with the management number 1 via the wireless communication unit 13.

When the timer I times out,
In step S12, the extension calling process is stopped, and at the same time, the display unit 24 and the speaker 26 notify that the mobile phone is not in the calling area.
At 13, the timer II built in the control unit 12 is started.
This timer II is a timer that regulates the time until the mobile phone is automatically called via an outside line. The timer time indicates that the mobile phone is not in the calling area due to the notification processing in step S12. The caller who knows can judge whether or not it is necessary to call the mobile phone through the outside line, and when it is judged that the calling is not necessary, an operation for stopping the outside line call, for example, the handset 15 is hooked on the hook. The time may be sufficient for the operation.

The notification in step S12 is performed by the timer II.
It is desirable to continue until the time is up. More preferably, the timer II is a subtraction timer, and the remaining time of the timer, which is changing every moment, is continuously displayed on the display unit 24 until the remaining time of the timer becomes zero.

After the timer II is started, it is judged whether or not there is an instruction to cancel the outside line calling (step S).
14) and the process of determining whether or not the timer II has timed out (step S15) are repeatedly executed.

If there is a command to cancel the outside call before the timer II times out, step S16
Then, the process proceeds to step S17 to execute a process for canceling the call of the mobile phone with the management number 1 via the outside line, that is, a process for preventing the outside line calling process in step S17 described later. Specifically, this stop processing is, for example, processing for stopping the operation of the timer II.

When the timer II times out,
The process proceeds to step S17 to execute the calling process via the outside line. That is, a signal is sent to the line interface unit 11, the line connection switch built in the line interface unit 11 is turned on, and the telephone number “7000” of the mobile phone with the management number 1 stored in the management data storage unit of the ROM 21 is stored. (See FIG. 3) and read DT
The process of sending to the MF code memory 25 is executed. As a result, the DTMF signal corresponding to the telephone number "7000" is generated by the voice codec unit 16, and the generated DTMF signal is generated.
The signal is output to the communication line network 1 shown in FIG. 1 via the line interface unit 11. Therefore, if the mobile phone with the management number 1 is in any of the calling areas 5a to 7a shown in FIG. 1, the mobile phone is called via the corresponding public wireless base stations 5 to 7.

As described above, according to this embodiment, not only the ID code of the mobile phone used for extension call, but also the telephone number when the mobile phone is called via the outside line is stored in the ROM 21 as the management data of the mobile phone. If the mobile phone does not respond within a predetermined time when the mobile phone is called by an extension, the phone number stored in the ROM 21 is used to automatically call the mobile phone by an outside line. Therefore, even if the mobile phone is carried out outdoors, the mobile phone can be called only by the dial operation for calling the extension, and the dial operation for the call can be greatly simplified.

Next, a second embodiment of the present invention will be described. In this embodiment, information indicating whether or not the mobile phone managed by the radio base station is within the calling area of the radio base station is stored in the radio base station, and an extension call operation for calling the mobile phone is performed. At this time, whether the extension call or the outside call is made is automatically determined based on the stored information.

The above-mentioned information as to whether or not the mobile phone is within the calling area of the radio base station can be stored in the RAM. The configuration of the wireless base station of the present embodiment is almost the same as the configuration of the wireless base station of the first embodiment shown in FIG. 2, so it is not particularly shown, and the wireless base station of the first embodiment shown in FIG. Description will be made with reference to the configuration of the base station.

The information as to whether or not the mobile phone is within the calling area of the radio base station is stored in the RAM 23 connected to the control unit 12. FIG. 5 is a diagram showing details of a storage unit that is provided in the RAM 23 and stores the information. As shown in FIG. 5, this storage unit has an area for storing the management number of the mobile phone and a flag area for storing flag information for identifying whether or not the mobile phone is within the calling area of the radio base station. For all mobile phones managed by the wireless base station, a management number of each mobile phone and flag information indicating whether or not the mobile phone is within the calling area of the wireless base station 3a are stored as a set of data. You can do it.

To set the flag information, for example, in the system of the cordless telephone device 3, the wireless base station 3a periodically sends a response request signal to the mobile phone 3b, and the mobile phone 3b receives the request signal. However, if the configuration is such that a confirmation signal is immediately transmitted to respond, it can be automatically performed. That is, the wireless base station 3a periodically transmits a response request signal to the mobile phone 3b, and when the confirmation signal is received, the mobile phone 3 that has transmitted the confirmation signal.
When the flag b is set and the confirmation signal does not come back within the predetermined time, the process of clearing the flag of the mobile phone 3b may be performed. Even if such a mobile phone exchanges signals, the mobile phone can be charged at any time in the home and is often charged, so that it is not necessary to pay much attention to the power consumption of the battery.

FIG. 6 is a flow chart for explaining the calling method of the portable telephone in the second embodiment.
Also in this embodiment, the dial operation for the extension call and the outside call will be explained as the same dial operation as in the first embodiment.

In FIG. 6, the processing of steps T1 to T6 is the same as the processing of steps S1 to S6 of the first embodiment shown in FIG. That is, after the off-hook of the handset 15, the operation key determination process is performed in steps T1 and T2, and when the operation key is determined to be the extension selection key in step T1, the extension mode setting process in step T3 and The OFF process of the line connection switch in step T4 is performed. If it is determined in step T2 that the operation key is a dial key, step T2
It is determined in 5 whether the extension mode is set,
If the extension mode is not set, the access processing of the DTMF code memory 25 of step T6 is executed,
Normal outside line calling processing is performed.

In this embodiment, the RAM 23 stores flag information for identifying whether or not the mobile phone managed by the radio base station is within the calling area of the radio base station, and the extension call is made based on the flag information. Since it is configured to automatically determine whether the extension line is called or the outside line is called, the first process is the process when it is determined that the extension mode is set in step T5.
Different from the embodiment.

That is, when it is determined in step T5 that the extension mode is set, the process proceeds to step T7, and the mobile telephone having the extension number (management number) input by the dial key calls the radio base station. Whether it is in the area or not is determined based on the flag information stored in the RAM 23. For example, when the extension number input by the dial key is "2", the flag information corresponding to the management number 2 stored in the RAM 23 is read,
Based on the content of the read flag information, it is determined whether the mobile phone with the management number 2 is in the calling area.

If it is determined in the determination process of step T7 that the user is in the calling area, the process proceeds to step T8 to execute the extension calling process. That is, the ID code “304” (see FIG. 3) corresponding to the management number 2 stored in the management data storage unit of the ROM 21 is read and sent to the frame processing unit 17 of the wireless communication unit 13 for wireless communication. The antenna 20 of the machine section 13 sends a call signal for calling the mobile phone with the management number 2 and the process is terminated. The call signal is sent until a call cancel operation (for example, the handset 15 is returned to the original state) or a response signal based on the key operation of the carrier is received from the mobile phone with the management number 2. Continue.

When it is determined in the determination processing in step T7 that the mobile phone with the management number 2 is not in the calling area, the process proceeds to step T9 and steps S12 to S12 of the first embodiment shown in FIG. The same process as S17 is performed. That is, in step T9, the display unit 24 and the speaker 26 notify that the mobile phone is not in the calling area, and at the same time, in step T10, the timer built in the control unit 12 is started. The function of the timer is the same as the function of the timer II in the first embodiment, and the notification that the mobile phone is not in the calling area indicates the remaining time of the timer in the display unit 24 as described in the first embodiment. It is desirable to continue the process until the timer expires while displaying in.

After the timer is started, it is judged whether or not there is an instruction to cancel the outside call (step T1).
1) and the process of determining whether or not the timer has timed out (step T12) are repeatedly executed. If there is an instruction to stop calling the outside line before the timer times out, the process proceeds to step T13 to execute a process for stopping the call to the mobile phone with the management number 2 via the outside line. That is, processing such as stopping the operation of the timer is executed.

When the timer times out, the process proceeds to step T14 to execute the calling process via the outside line. That is, a signal is sent to the line interface unit 11, the line connection switch built in the line interface unit 11 is turned on, and the telephone number “7001” of the mobile phone with the management number 2 stored in the management data storage unit of the ROM 21 is stored. (See FIG. 3) to read the DTM
The process of sending to the F code memory 25 is executed. As a result, the DTMF signal corresponding to the telephone number "7001" is generated by the voice codec unit 16, and the generated DTMF signal is generated.
The signal is output to the communication line network 1 shown in FIG. 1 via the line interface unit 11. Therefore, if the mobile phone with the management number 2 is in any of the calling areas 5a to 7a shown in FIG. 1, it is called via the corresponding public wireless base stations 5 to 7.

In the second embodiment, the RAM 23 is provided with a storage unit for storing information as to whether or not the mobile phone managed by the radio base station is within the calling area of the radio base station, and is stored in this storage unit. Information is periodically updated, and when the dial operation for calling the extension is performed, whether the designated mobile phone is within the calling area of the wireless base station based on the information stored in the storage unit. It is determined whether or not the extension call and the outside call are automatically made. Therefore, if the specified mobile phone is not within the calling area of the wireless base station, the outside call can be made in a relatively short time. You can Therefore, if the phone number used to call the mobile phone via an outside line is not registered as an abbreviated number, that is, if all digits of the phone number must be entered by key operation, the person who should call Even when it is known that the person is out, the dial operation is easier to perform by calling the above-mentioned extension.

In the above-described first and second embodiments, when it is determined that the mobile phone to be called is not within the calling area of the wireless base station, a notification is given and a timer is activated at the same time. Although the outside line call is automatically executed based on the time-up, the outside line call may be executed based on the manual operation. That is, when the predetermined key for instructing the execution of the outside line call is operated before the handset 15 is on-hook after the notification, the telephone of the mobile phone stored in the management data storage unit in the ROM 21. The number may be read and the outside line calling may be executed. In this case, the number of key operations is increased once compared to the first and second embodiments, but the outside line call is executed at the time when the predetermined key is operated, so that the first and second embodiments using the timer. It is possible to make an outside line call in a shorter time than the above.

Further, in the first embodiment, the operation of the predetermined key for instructing the execution of the outside line calling is detected not only after the notification, but also during the execution period of the extension calling process. You may Specifically, in the call processing flow of the mobile phone shown in FIG. 4, a step of determining whether or not the predetermined key is operated is provided in the determination processing routine which is repeatedly executed by steps S9 and S10. Good. As a result, the outside line calling process can be executed in a shorter time.

Further, in the above-mentioned first and second embodiments, the case where the call designation of the mobile phone is performed by the key input unit 22 provided in the radio base station has been described, but the present invention is the call designation of the mobile phone. Can also be applied to the case where the above is performed by another mobile phone of the cordless telephone device. In this case, the wireless base station relays the call of the mobile phone and relays the call between the calling mobile phone (the calling mobile phone) and the called mobile phone (the calling mobile phone). Although it functions as a relay station, the configuration of the radio base station itself is almost the same as the configuration shown in FIG. 2, and the only difference is the internal configuration of the frame processing unit 17. Therefore, not specifically shown,
Only the differences will be described.

In the first and second embodiments, the frame processing section 17 sends the received digital audio signal from the digital modulation / demodulation section 18 to the audio codec section 16 and digitally outputs the digital audio signal from the audio codec section 16. Processing for sending to the modulation / demodulation unit 18 was performed.

However, when the call relay between the calling side mobile telephone and the called side mobile telephone is performed, the frame processing section 17 is used.
When receiving the digital audio signal from the calling side mobile phone, the digital audio signal is sent to the digital modulation / demodulation unit 18 at the transmission timing for the called side mobile phone, and the digital audio signal from the calling side mobile phone is received. When the voice signal is received, it is necessary to send the received digital voice signal to the digital modulation / demodulation unit 18 at the transmission timing for the calling side mobile telephone.

The signal transmission system of the embodiment is TDMA-TDD.
Therefore, specifically, it is necessary to temporarily hold the previously received digital audio signal in the frame processing unit 17, and send the subsequently received digital audio signal to the digital modulation / demodulation unit 18 first.

For this reason, the frame processing unit 17 in the present embodiment transfers the audio data previously received via the digital modulation / demodulation unit 18 to, for example, the transmission buffer in the frame processing unit 17 and temporarily holds it. The post-received audio data can be directly sent from the reception buffer in the frame processing unit 17 to the digital modulation / demodulation unit 18. Also,
Add one transmission buffer in the frame processing unit 17,
It is also possible to transfer the audio data from the two mobile phones, which are received with a time lag, to different transmission buffers and send them from the respective transmission buffers to the digital modulation / demodulation unit 18 at predetermined transmission timings. Is.

That is, the frame processing section 17 in the present embodiment can not only send the received digital audio signal from the digital modulation / demodulation section 18 to the audio codec section 16, but also digitally demodulate the received digital audio signal at each timing described above. It can also be sent to the unit 18, and can be switched depending on whether the mode is the normal mode or the relay mode.

Next, the difference in the calling process will be described. When the mobile phone is designated to be called by another mobile phone of the cordless telephone device, the dialing operation for calling the mobile phone with an extension line and the key operation for canceling an outside line call are performed by the calling side mobile phone. Be seen. Therefore,
In the first and second embodiments, the processing which the control unit 12 discriminates by the signal from the key input unit 22, that is, the processing of steps S1, S2 and S14 in FIG. 4, or the steps T1, T2 and T11 in FIG. The processing is performed on the basis of the key code signal of the mobile phone on the calling side, which is received by the antenna 20 and input via the frame processing unit 17.

Further, since it is necessary to notify the calling side portable telephone that the portable telephone specified to call is not in the calling area, the notification processing in step S12 in FIG. 4 or the notification in step T9 in FIG. 6 is performed. The process is a process of sending a notification command signal to the calling side mobile phone.

Further, the present invention can be applied to a system cordless telephone device. In this case, the storage unit stores the mobile phone management data and the flag information indicating whether or not the mobile phone is in the office, rather than providing each of the plurality of wireless base stations with the exchange function unit in the system cordless telephone device.
For example, in the system cordless telephone device 4 shown in FIG. 1, it is desirable to provide the PBX 4c. As a result, the management of all mobile phones belonging to the system cordless telephone device is unified, and the processing is facilitated.

[0074]

According to the present invention, at least two telephones including a mobile telephone and a radio base station for setting a radio line between these telephones are provided, and the mobile telephone has the radio base station via a communication line. In a radiotelephone device that can be used in another radiotelephone system connected to, an extension calling number for calling the mobile phone via the radio base station and the radiotelephone in the other radiotelephone system. A calling number storage means for storing an outside line calling number for calling through a station in association with each other, and an extension calling mode or an outside calling mode is set by the mobile phone and another telephone, and the extension line is set based on the set mode. When call control means for making a call or an outside call, and the call control means are set to an extension call mode for calling the mobile phone by extension, The call control means is provided with an outside line calling command means for outputting a command signal for sending the outside call number stored in the calling number storage means corresponding to the extension calling number of the mobile telephone to the communication line. So
When the mobile phone is not within the calling area of the wireless phone device, the mobile phone can be called automatically or by a simple switch operation via a wireless base station in another wireless phone system.

Therefore, even if the caller wants to call the portable telephone set taken out of the door without the calling party's knowledge, the calling party dials the portable telephone set by extension. By itself, or after this dial operation, when it is found that the mobile phone is not in the calling area of the wireless telephone device, only one additional key operation is required to operate the wireless base station in another wireless telephone system. The mobile phone can be called through the station, and the dial operation for calling can be greatly simplified.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a composite wireless telephone system according to the present invention.

FIG. 2 is a circuit configuration diagram of a radio base station of the cordless telephone device according to the present invention.

3 is a diagram showing a management data storage unit for a mobile phone, which is provided in the ROM shown in FIG.

FIG. 4 is a flowchart illustrating a calling process of a mobile phone.

5 is a diagram showing a data storage unit for a mobile phone, which is provided in the RAM shown in FIG.

FIG. 6 is a flowchart illustrating another example of the calling process of the mobile phone.

[Explanation of symbols]

 1 communication line network 3 cordless telephone device 4 system cordless telephone device 5, 6, 7 public wireless base station 8 controller center 11 line interface unit 12 control unit 13 wireless communication unit unit 14 line switching circuit 15 handset 16 voice codec unit 17 frame processing Part 18 Digital modulation / demodulation part 19 Transmission / reception part 20 Antenna 21 ROM 22 Key input part 23 RAM 24 Display part 25 DTMF code memory

Claims (10)

[Claims] 1. A mobile phone comprising at least two telephones including a mobile telephone and a radio base station for establishing a radio line between these telephones, wherein the mobile telephone is connected to the radio base station via a communication line. In a wireless telephone device that can be used in a wireless telephone system, an extension calling number for calling the mobile phone via the wireless base station and for calling the mobile phone via a wireless base station in the other wireless phone system And a call number storage means for storing the call number of the outside line in association with each other, and an extension call mode or an outside call mode is set by the mobile phone and other telephones, and an extension call or an outside call is made based on the set mode. Call control means, and when the call control means is set to an extension call mode for calling the portable telephone by extension, the call control means And an outside line calling command means for outputting a command signal for sending the outside line calling number stored in the calling number storage means corresponding to the extension calling number of the mobile phone to the communication line. Wireless telephone device. 2. The wireless telephone device is a cordless telephone device having one wireless base station, and the calling number storage means and the call control means are provided in the wireless base station. The wireless telephone device according to Item 1. 3. The wireless telephone device according to claim 1, wherein one of the telephones is a telephone connected to the wireless base station. 4. The wireless telephone device is a system cordless telephone device having a plurality of wireless base stations, and the call number storage means and the call control means connect the plurality of wireless base stations to a communication line. The wireless telephone device according to claim 1, wherein the wireless telephone device is provided in an exchange unit. 5. The outside call commanding means has means for judging whether or not the portable telephone is within the calling area of the wireless telephone device, and when the judging means judges that the portable telephone is not within the calling area. The wireless telephone device according to claim 1, wherein the command signal is output. 6. The outside call commanding means is means for determining whether or not the portable telephone is within the calling area of the wireless telephone device, and is activated when the determining means determines that the portable telephone is not within the calling area. 2. The radiotelephone device according to claim 1, further comprising a timer unit for outputting the command signal when the timer unit times out. 7. The outside line calling command means further determines that the outside area calling command means is not in the calling area by the determination means,
7. The radiotelephone device according to claim 5, further comprising informing means for informing that effect. 8. The determining means is means for determining whether or not a response signal has been received from the mobile phone within a predetermined time after calling the mobile phone with an extension line. Alternatively, the wireless telephone device according to item 6. 9. The determination means further comprises storage means for storing information indicating whether or not the mobile phone is in the calling area, and update means for periodically updating the storage information in the storage means. 7. The radiotelephone device according to claim 5, wherein the radiotelephone device is means for making a determination based on information stored in the storage means. 10. The radiotelephone apparatus according to claim 1, wherein the outside call commanding means is a manual operation switch provided on a calling side telephone that specifies the mobile telephone as an extension call.