JPH09238380A - Registration ID sharing method, portable information terminal and wireless telephone apparatus to which the method is applied - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To enable a carrier registration ID to be shared between a PHS terminal and a mobile information terminal. SOLUTION: A registration ID for a telecommunications carrier is issued by writing it in a registration ID card 4. This registration ID card 4
It can be attached to and detached from each of the portable personal computer 1 and the PHS terminal 3. When the registration ID card 4 is attached to each of the portable personal computer 1 and the PHS terminal 3, the registration I
Read D and use it to connect to the public network.
Therefore, it is possible to share the registration ID between the PHS terminal 3 and the portable personal computer 1 and avoid having duplicate registration IDs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a registration I in a wireless communication system for connecting a subscriber terminal to a public line network by using a registration ID issued to a subscriber by a communication carrier.
The present invention relates to a D sharing method, a portable information terminal and a wireless telephone device to which the method is applied.

[0002]

2. Description of the Related Art Generally, in a wireless communication system using a PHS, a mobile phone or the like, a registration ID is issued to a subscriber at the time of contracting with a telecommunications carrier, and the registration ID is used by the subscriber to purchase the PHS or mobile phone. Written in a wireless terminal such as a telephone.

This registration ID is used to set the wireless terminal in a state in which it can be connected to the public line network, and when the user connects to the line using the wireless terminal, the wireless terminal is transferred to the base station. Will be sent automatically. Then, processing such as billing is performed in the base station based on the registration ID. In this way, the registration ID is written and used in each wireless terminal.

By the way, in recent years, the demand for mobile computing has increased, and various portable information terminals such as portable computers having a built-in communication function have been developed. By connecting such a portable information terminal to a modular jack of a telephone or the like, data and voice can be transmitted and received via a public line.

[0005]

Recently, in addition to the above-mentioned wired communication, development of a portable information terminal having a PHS or a wireless telephone function similar to that of a portable telephone has been started. However, in order to perform wireless telephone communication using a mobile information terminal with a built-in wireless telephone function, as in the case of PHS and mobile phones described above, a contract with a telecommunications carrier should be made and a registration ID issued. , You need to write it in the terminal.

[0006] Therefore, for users who own PHSs and mobile phones and have already made a contract with a telecommunications carrier and have been given a registration ID, purchase a new mobile information terminal with a built-in wireless telephone function. Then, in addition to the existing PHS and mobile phone, a new contract is made with the telecommunications carrier, and the registration I
It is necessary to get D.

That is, the registration is performed twice separately, and it is necessary to pay the subscription fee and the monthly basic fee in duplicate. Further, it is considered that the same subscriber rarely communicates with the PHS or the mobile phone at the same time by using the portable information terminal with the built-in wireless telephone function, so that the same subscriber may have two different registration IDs. It is uneconomical.

Further, conventionally, when making a call using a portable information terminal, it is necessary to connect a voice input / output device such as a dedicated headset or a microphone / earphone set to the portable information terminal. For this reason, in addition to the portable information terminal, the voice input / output device must always be carried and carried around, which is disadvantageous in terms of usability.

The present invention has been made in view of the above circumstances, and a registration ID issued to a subscriber from a telecommunications carrier at the time of contract is used as a wireless telephone such as a PHS or a mobile telephone.
To enable shared use between mobile information terminals with wireless telephone functions, and when making a call on a mobile information terminal, PH
An object of the present invention is to provide a registration ID sharing method capable of using S or a mobile phone as a handset of the mobile information terminal, and a mobile information terminal and a wireless telephone device to which the method is applied.

[0010]

According to the present invention, a plurality of registration IDs are provided in a wireless communication system for connecting a subscriber terminal to a public line network by using a registration ID issued by a communication carrier to a subscriber. A registration ID sharing method for sharing between subscriber terminals, which can be detachably attached to a portable information terminal and a portable wireless telephone device each having a built-in wireless communication means for executing a wireless telephone function. A portable data storage carrier configured to store the registration ID is prepared, and the registration I stored in the portable data storage carrier is prepared.
It is characterized in that D is read by the portable information terminal or the portable wireless telephone device in which the portable data storage carrier is mounted to execute the connection processing with the public line network.

According to this registration ID sharing method, the registration ID for the communication carrier is written and issued in a portable data storage carrier such as a PC card or another IC. This portable data storage carrier can be attached to and detached from each of the portable information terminal and the portable wireless telephone device. When the portable data storage carrier is mounted, each of the portable information terminal and the portable wireless telephone device reads the registration ID from the portable data storage carrier and uses it for connection to the public line network. Therefore, P
It is possible to share a registration ID between a portable wireless telephone device such as an HS or a mobile phone and a mobile information terminal, and avoid having duplicate registration IDs.

Further, when the portable information terminal is mounted on the portable data storage carrier, the microphone and the speaker of the portable wireless telephone device can be used as a handset of the portable information terminal so that the portable information terminal can be used. It is preferable that the microphone and the speaker of the portable wireless telephone device are coupled to the wireless communication means of the portable information terminal via an interface connecting the portable wireless telephone device and the voice signal between the microphone and the speaker. As a result, when making a call with the mobile information terminal, the PHS or the mobile phone can be used as a handset of the mobile information terminal, and the usability can be improved.

Further, the portable radio telephone device is provided with two operation modes, that is, a handset mode in which only the driving device for the microphone and the speaker is operated and a communication mode for executing a normal radio telephone function. , The presence / absence of attachment of the portable data storage carrier is detected by the portable radiotelephone device, and the operation mode is switched between the handset mode and the communication mode according to the detection result or a command from the portable information terminal. It is preferable. As a result, when a PHS or a mobile phone is used as a handset of a personal digital assistant, it is possible to reduce the power consumption of the PHS or the mobile phone.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a usage form of a portable wireless terminal and a portable information terminal to which a registration ID sharing method according to an embodiment of the present invention is applied. The registration ID sharing method according to this embodiment uses a plurality of subscriber IDs in a wireless communication system for connecting a subscriber terminal and a public line network using a registration ID issued by a telecommunications carrier to a subscriber. In this sharing method, the registration ID issued at the time of contracting with the telecommunications carrier is stored and issued in the registration ID card 4, and the registration ID card 4 is used for the portable wireless telephone. The device 3 and the portable personal computer 1 can be used respectively. Hereinafter, the components of FIG. 1 will be specifically described.

A portable personal computer 1 has a built-in wireless telephone function such as a PHS or a mobile phone. Reference numeral 2 denotes a master unit for communicating with the portable personal computer 1, which is connected to the public telephone line network 10 and functions as a PHS wireless base station. A PHS terminal 3 is a simple mobile phone.

Reference numeral 4 is a registration ID card, for example, JEI
It is composed of a DA / PCMCIA specification PC card. The registration ID card 4 stores the registration ID issued to the subscriber by the telecommunications carrier. A PC card slot 5 is provided in both the portable personal computer 1 and the PHS terminal 3. Each of these P
The registration ID card 4 can be detachably attached to the C card slot 5.

An external interface 6 sends and receives signals between the portable personal computer 1 and the PHS terminal 3. Reference numeral 7 is a cable, which is an interface cable for connecting the PHS terminal 3 and the portable personal computer 1. Reference numeral 12 denotes an antenna, which is a PHS antenna built in the portable personal computer 1.

In the system shown in FIG. 1, when the registration ID card 4 is inserted into the PC card slot 5 of the PHS terminal 3, the PHS terminal 3 receives the registration ID from the registration ID card 4.
Read and use it to connect to public telephone networks. On the other hand, when the registration ID card 4 is attached to the PC card slot 5 of the portable personal computer 1,
The portable personal computer 1 reads the registration ID from the registration ID card 4 and uses it to connect to the public telephone line network. In this case, when making a call using the portable personal computer 1, the PHS
By connecting the terminal 3 to the portable personal computer 1 as shown, the microphone and speaker of the PHS terminal 3 can be used as a handset. This is the external interface 6 and cable 7
It is realized by transmitting and receiving voice between the PHS terminal 3 and the wireless communication function of the portable personal computer 1 via the.

Further, the PHS terminal 3 has two operation modes, that is, a handset mode in which only the driving device of its microphone and speaker is operated, and a communication mode in which a normal wireless telephone function is executed. ID card 4
Is removed, it is detected and the handset mode is entered. Therefore, when the microphone and speaker of the PHS terminal 3 are used as a handset during a call by the portable personal computer 1, all communication functions other than voice transmission / reception with the portable personal computer 1 are powered off, and the power consumption is reduced. Can be realized.

FIG. 2 shows a second example of a use form of a portable wireless terminal and a portable information terminal to which the registration ID sharing method of this embodiment is applied. In FIG. 2, reference numeral 8 is a headset having a microphone and a speaker. 9
Is a cable, which is a signal line for transmitting and receiving signals between the headset 8 and the portable personal computer 1. Here, the only difference is that a dedicated headset 8 is used, and the registration ID card 4 is used for PH.
Sharing between the S terminal 3 and the portable personal computer 1 is the same as in FIG.

By the above method, it is possible to use them as one PHS communication carrier registration ID without having two registration IDs for the PHS with built-in portable personal computer 1 and for the PHS 3 alone. Since it becomes possible and the PHS single unit 3 can be used as a handset at the same time, it is not necessary to carry the handset separately for making a call using the PHS built in the portable personal computer 1.

FIG. 3 shows a functional configuration inside the portable personal computer 1. This portable personal computer 1 has a CPU 1 as shown.
3, memory 14, LCD 15, keyboard 16, HDD
17, the FDD 18, a PC card controller 19 for controlling access to the registration ID card 4 connected to the PC card connector 20 of the PC card slot 5, and a connector 20 for transmitting and receiving commands between the PHS terminal 3.
a and a serial interface controller 19. When the PC card inserted in the PC card slot 5 is the registration ID card 4, the PC card controller 19 reads out the registration ID from the registration ID card 4 under the control of the CPU 1.

Further, the portable personal computer 1 is equipped with the following units 21 to 27 as a mechanism for realizing the PHS function for data and voice communication.

Reference numeral 21 denotes an antenna, which serves as an antenna of PHS. Reference numeral 22 denotes an RF module, which is a PHS radio frequency transmitter. A transmission / reception amplifier and a filter are also included here. Reference numeral 23 denotes a BBIC (baseband IC), which controls the RF 21 which is a radio unit of the PHS, and at the same time, exchanges signals with the UAP (user application program) module 26. This B
The BIC 23 is also provided with a frequency modulator, a channel controller, a communication protocol controller, and the like.

Reference numeral 24 is a CPU for controlling wireless communication, and B
Control the BIC 23. Reference numeral 25 is a ROM in which a program for operating the CPU 24 is stored. 26
Is a UAP module, which sends and receives signals to and from the BBIC 23, and also performs functions as a telephone such as dialing. This UAP module 26 has P
A CM codec section is provided. Reference numeral 27 denotes a connector, which is an interface unit for microphone / earphone signals.

Next, the operation of the portable personal computer 1 will be described. The registration ID card 4 in which the communication carrier registration ID is written is the PC card connector 20.
, The PC card controller 19 sends information indicating that the connected PC card is connected to the connector 20, to the CPU 13, and the CPU 13 connects the connected PC.
The attribute information is read from the card to determine the type of PC card. When it is determined that the connected PC card is the registration ID card 4, the read request from the CPU 13
Information of the registration ID is read from the registration ID card 4 by the PC card controller 19 and stored in the memory 14.

When the user uses the PHS built in the portable personal computer 1 to perform a call and data communication, the CPU 24 of the BBIC 23 first drives the RF 22 and the BBIC 23, which are wireless devices for wireless communication, according to the program from the ROM 25. RF22 and B
When the BIC 23 is driven, radio waves can be transmitted and received through the antenna 21.

Next, the CPU 24 reads the program from the memory 14 and drives the UAP 26 to perform the telephone function. When communicating via the public base station 2,
Since the registration ID of the telecommunications carrier is required, a public connection becomes possible by loading the registration ID stored in the memory 14 into the UAP 26.

For public connection, the registration ID loaded in the UAP 26 is transmitted from the PHS built in the portable personal computer 1 to the public base station 2 via the BBIC 23, RF 22, and antenna 21. A response signal indicating that a public connection has been made is transmitted to the PHS built in the computer 1.
With the above, a public connection is established, and thereafter, communication as PHS becomes possible.

When making a call using the PHS, since the portable personal computer 1 does not have a built-in microphone and speaker, the call can be made by connecting the headset or the PHS terminal 3 to the connector 27.

Next, the internal configuration of the PHS terminal 3 will be described with reference to FIG. 4, parts having the same functions as those in FIG. 3 are designated by the same reference numerals. 1
Reference numeral 1 is a connector of the registration ID card 4. 20 is a PC
It is a card connector. 21 is an antenna, PHS
Plays the role of antenna.

Reference numeral 22 is RF, which is a PHS radio frequency transmitter. Reference numeral 23 is a BBIC, which controls RF, which is a radio section of the PHS, and at the same time exchanges signals with the UAP. A CPU 24 controls the BBIC. 25
Is a ROM in which a program for operating the CPU 24 is stored. Reference numeral 26 is a UAP, which exchanges signals with the BBIC and executes functions as a telephone such as dialing. A keyboard 28 is a key input device. Reference numeral 29 denotes a microphone and a speaker, which are a microphone and a speaker when making a call as a telephone. 30 is LC
D is a display device. 31 is a switch, P
It is a switch that executes the HS function. Reference numeral 32 denotes a connector, which is an interface unit for microphone / earphone signals.

A controller 33 controls a signal line between the PC card and the UAP. 34 is a CPU,
Control UAP. A ROM 35 stores a program for operating the CPU 34. A controller 36 controls a signal line between the PHS and the memory 3).
Reference numeral 37 denotes an in-card memory, which stores information such as a PHS registration recognition ID. Reference numerals 39 and 40 respectively denote a connector and a serial interface controller for transmitting / receiving a command to / from the portable personal computer 1.

When a cable for exchanging soft commands with the portable personal computer 1 is connected to the connector 39 and a command is input from the portable personal computer 1, the UAP CPU 34 determines the content of the command.

If the content of the command from the portable personal computer 1 is the handset mode setting, the CPU 34 for UAP makes the microphone / speaker 29 and the connector 32 electrically connected to make the PHS 3 usable as a handset. , RF22, BB
Power management processing for stopping the power supply to the IC 23 and stopping the telephone function as the PHS3 is performed.

On the contrary, if the content of the command from the portable personal computer 1 is the release of the handset mode, the microphone / speaker 29 and the connector 32 are electrically disconnected so that the PHS 3 can be used as a telephone. Power management processing is performed to restart the power supply to the RF 22 and the BBIC 23 and restore the telephone function as the PHS.

On the other hand, when the registration ID card 4 is inserted into the connector 38, the controller 33 causes the CPU 3 for UAP to operate.
The information indicating that the card has been inserted is transmitted to the CPU 4, and the CPU 3
4 determines the type of the card inserted via the controller 33, and therefore reads the attribute information in the card to determine the type of the card.

If the inserted card is the registration ID card 4, the UAP CPU 34 reads the registration ID information from the memory 37 in the registration ID card 4 and loads it into the UAP 26 to establish a public connection with the registered communication carrier. Is possible.

Next, referring to the flowchart of FIG.
The processing procedure executed in the portable computer 1 will be described. When the communication program starts, in order to determine which mode the user is setting,
First, it is determined whether the call mode is set (step S38). Next, it is determined whether the user has released the call mode (step S39). If the mode has not been set, it is determined whether a PC card is inserted in the PC card slot to check the state of the card (step S40).

If neither the mode setting nor the card state has changed, it is judged whether or not the program should be ended at the end (step S41). If the end is detected, the program is ended. Then, the process returns to the call mode determination step (step S38) which is the determination step.

Call mode discrimination step (step S3)
When it is determined in 8) that the call mode is set, the connector 27
And UAP 26 are electrically connected to each other to enable a call using an external speaker and a microphone (headset 8) or PHS3.

When it is determined that the call mode is released in the call mode release determination step (step S39), the connector 27 and the UAP 26 are electrically disconnected, and the external speaker and microphone (headset 8) or PHS3 is used. All calls are disabled.

In the step of checking the card state (step S40), if it is determined that the PC card is inserted in the PC card slot, the process proceeds to the step of determining the type of the inserted PC card (step S44). It is determined whether the inserted PC card is the PHS registration ID card 4 (step S45).

Next, it is determined whether the card is a card conforming to the PC card standard other than the registration ID card 4 (step S48). If it is neither the registration ID card nor another PC card, error processing is performed to inform the user that the wrong card has been set (step S49).

In the step of determining whether it is the PHS registration ID card 4 (step S45), if it is determined to be the registration ID card 4, the ID is loaded from the memory in the PC card and the loaded ID is notified to the UAP 26. At PH
A public connection is possible as S (step S4)
6).

If it is determined that the card is a PC card other than the registered ID card 4 in the step (step S48) of determining whether the card complies with the PC card standard,
A setup process is performed for each card type (step S47).

Next, referring to the flowchart of FIG.
The processing procedure executed in the PHS terminal 31 will be described. When the program starts, it is first determined whether a soft command has been input from the portable personal computer 1 (step S50). Next, in order to determine the state of the card, it is determined whether the PHS registration ID card 4 has been pulled out from the card slot (step S51), and the PHS
It is determined whether the registration ID card 4 of No. 4 is inserted in the card slot (step S52). Finally, it is judged whether or not the program is to be ended (step S53), and if it is ended, the program is ended, and if the end is not selected, the process returns to the first step of judging the command input (step S50).

When it is determined that the soft command is input from the portable personal computer 1 (step S
50), and shifts to the step of determining which mode command has been input. First, it is determined whether the content of the soft command from the portable personal computer 1 is a command for instructing the handset mode setting (step S54). Next, it is determined whether the content of the soft command from the portable personal computer 1 is a command for instructing the handset mode release (step S5).
6) If different commands are input, the process proceeds to the step (step S53) of determining the end of the program.

When it is determined that the content of the soft command from the portable personal computer 1 is a command instructing the handset mode setting (step S5)
4) Since the PHS 3 is used as a handset, the microphone / speaker 29 and the interface connector 32 of the portable personal computer 1 are electrically connected, and the microphone / speaker 29 and the communication circuit inside the PHS terminal 3 are connected. By disconnecting, the PHS3 is ready for use as a handset, and at the same time RF22, B
Power management processing is performed to stop the power supply to the BIC 23 and to stop the telephone function as the PHS.
The function of the telephone as is stopped (step S55).

When it is determined that the content of the soft command from the portable personal computer 1 is a command for instructing the handset mode setting cancellation (step S5).
6), the microphone / speaker 29 and the interface connector 32 of the portable personal computer 1 are electrically disconnected, and the microphone / speaker 29 and the P
By connecting with the communication circuit inside the HS terminal 3, the PHS
RF3 at the same time that 3 is ready to be used as a telephone
3. The power management process for resuming the power supply to the BBIC 23 to restore the telephone function as the PHS is performed, and the PHS 3 is returned to the state usable as the telephone (step S57).

On the other hand, if it is determined that the PHS registration recognition ID card is removed from the card slot (step S5).
8) The mode becomes the same as that when the handset mode setting command is input from the portable personal computer 1, and the process shifts to use the PHS 3 as a handset (step S58).

When it is determined that the PHS registration ID card 4 is inserted in the card slot (step S5).
2) The mode becomes the same as when the handset mode release command is input from the portable personal computer 1, and the PHS 3 is returned to a state usable as a telephone (step S58).

As described above, in this embodiment, the registration ID for the communication carrier is written in the registration ID card 4 and issued. The registration ID card 4 can be attached to and detached from the portable personal computer 1 and the PHS terminal 3, respectively. When the registration ID card 4 is attached to each of the portable personal computer 1 and the PHS terminal 3, the registration ID card 4 reads the registration ID and uses the registration ID card 4 for connection to the public line network.

Therefore, it is possible to share the registration ID between the PHS terminal 3 and the portable personal computer 1 and avoid having duplicate registration IDs.

When the registration ID card 4 is attached to the portable personal computer 1, the microphone and the speaker 29 of the PHS terminal 3 can be used as a handset of the portable personal computer 1 through the interface connectors 27 and 32. PHS on UAP26 of portable personal computer 1
Since the microphone and the speaker 29 of the terminal 3 are coupled and voice signals are transmitted and received between them, the PHS terminal 3 can be used as a handset when making a call with the portable personal computer 1, which is convenient for use. It is possible to improve.

Further, the PHS terminal 3 is provided with two operation modes, that is, a handset mode in which only the driving device of the microphone and the speaker 29 is operated and a communication mode in which a normal wireless telephone function is executed. Commands from the portable personal computer 1,
Since the operation mode is switched between the handset mode and the normal communication mode in accordance with the result of detection of attachment / detachment of the registration ID card 4, when the PHS terminal 3 is used as the handset of the portable personal computer 1, the PHS terminal 3 is used.
The power consumption of the terminal 3 can be reduced.

Although the PHS has been described here, the present invention can be applied to other wireless communication devices such as mobile phones, MCA systems, and teleterminal communication.

[0058]

As described above, according to the present invention, by storing the registration ID issued to the subscriber by the telecommunications carrier at the time of the contract in the card and using it, the PH
A registration ID can be shared between a wireless telephone such as S and a mobile phone and a mobile information terminal having a wireless telephone function, and when a call is made on the mobile information terminal, the PHS or the mobile phone is used as a mobile phone. It becomes possible to use it as a handset of an information terminal. Furthermore, by switching the operation mode of the portable wireless telephone device between the handset mode and the communication mode, it is possible to realize low power consumption.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a usage form of a portable wireless telephone and a portable information terminal to which a registration ID sharing method according to an embodiment of the present invention is applied.

FIG. 2 is a diagram showing a second example of a usage form of a portable wireless telephone and a portable information terminal to which the registration ID sharing method of the embodiment is applied.

FIG. 3 is a block diagram showing a functional configuration of a portable information terminal used in the same embodiment.

FIG. 4 is an exemplary block diagram showing a functional configuration of a portable wireless telephone used in the same embodiment.

FIG. 5 is an exemplary flowchart illustrating a flow of processing executed by the mobile information terminal used in the embodiment.

FIG. 6 is an exemplary flowchart illustrating a flow of processing executed by the portable wireless telephone used in the same embodiment.

[Explanation of symbols]

1 ... Portable personal computer, 2 ... PHS wireless base station, 3 ... PHS terminal, 4 ... Registration ID card, 5 ...
PC card slot, 13 ... CPU, 14 ... Memory, 2
2 ... RF module, 23 ... BBIC, 26 ... UAP module.

Claims (7)

[Claims] 1. A registration for sharing a registration ID among a plurality of subscriber terminals in a wireless communication system for connecting a subscriber terminal to a public line network using a registration ID issued by a communication carrier to the subscriber. An ID sharing method, which is configured to be detachably attachable to a portable information terminal having a built-in wireless communication means for executing a wireless telephone function and a portable wireless telephone device, and to store the registration ID. Prepared portable data storage carrier, and the registration ID stored in the portable data storage carrier is read by the portable information terminal or the portable wireless telephone device in which the portable data storage carrier is mounted, A registration ID sharing method, characterized in that a connection process with a line network is executed. 2. The portable information terminal according to claim 1, wherein when the portable information terminal is mounted on the portable data storage carrier, the microphone and the speaker of the portable wireless telephone device can be used as a handset of the portable information terminal. A microphone and a speaker of the portable wireless telephone device are coupled to a wireless communication unit of the portable information terminal through an interface connecting the portable wireless telephone device, and a voice signal is transmitted and received between the microphone and the speaker. Registration I in paragraph 1
D sharing method. 3. The portable radiotelephone device has two operation modes, a handset mode in which only a driving device for the microphone and the speaker is operated, and a communication mode for executing a normal radiotelephone function, Switching the operation mode between the handset mode and the communication mode according to the detection result or a command from the portable information terminal, by causing the portable wireless telephone device to detect whether or not the portable data storage carrier is attached. 3. The registration ID sharing method according to claim 2. 4. A portable information terminal having a built-in wireless communication means for executing a wireless telephone function for connecting a subscriber terminal to a public line network by using a registration ID issued to the subscriber by a communication carrier. A connector to which a portable data storage carrier storing the registration ID is detachably mounted; a registration ID is read from the portable data storage carrier mounted to the connector; and the read registration ID is used to make a public line A portable information terminal comprising: means for executing a connection process with a network. 5. A communication interface for communicating with a portable wireless telephone device, and a microphone and a speaker of the portable wireless telephone device can be used as a handset of the portable information terminal,
It further comprises a voice signal transmitting / receiving unit for connecting a microphone and a speaker of the portable wireless telephone device to a wireless communication unit of the portable information terminal through the communication interface, and transmitting and receiving a voice signal therebetween. The mobile information terminal according to claim 4. 6. A portable radiotelephone device having a radiotelephone function for connecting a subscriber terminal to a public line network using a registration ID issued by a telecommunications carrier to a subscriber, wherein the registration ID is stored. And a connector to which the portable data storage carrier is detachably mounted, and a registration ID is read from the portable data storage carrier mounted to this connector, and the connection process with the public network is executed using the read registration ID. A portable wireless telephone device comprising: 7. The portable radiotelephone device has two operation modes, a handset mode in which only a driving device for its microphone and a speaker is operated and a communication mode for executing a normal radiotelephone function, Whether or not the portable data storage carrier is attached is detected, and according to the detection result or a command from the portable information terminal,
7. The portable wireless telephone device according to claim 6, further comprising means for switching the operation mode between the handset mode and the communication mode.