JP4492506B2 - Telephone system, telephone control device, and program - Google Patents

Description

  The present invention relates to a telephone control technology, and more particularly to a telephone system in which a telephone line is shared by a plurality of telephones including a wireless telephone using a Bluetooth (registered trademark: Bluetooth) wireless communication system, and a radio channel used by these wireless telephones is managed. It relates to channel management technology.

In a telephone system such as a button telephone apparatus that shares a telephone line (external line) by a plurality of extension telephones, there is a telephone system that accommodates a Bluetooth radio telephone using a Bluetooth radio communication system as an extension telephone.
For example, in a curl cordless telephone comprising a wireless master unit connected to a telephone control device via a wired transmission line and a handset type wireless slave unit, voice data and control exchanged between the wireless master unit and the wireless slave unit It is configured to transmit and receive data using the Bluetooth wireless communication system, and a telephone can be communicated by the wireless slave unit even at a distance from the wireless master unit.

In such a Bluetooth wireless communication system that is a general-purpose wireless interface, a frequency hopping spread spectrum (FHSS) modulation system is used as a modulation system (see Non-Patent Document 1, etc.). The frequency hopping spread spectrum modulation system is a system in which the carrier frequency (center frequency) is changed at fixed time intervals, that is, the frequency hopping is performed for transmission.
In general, the power of any bandwidth is low when averaged over a sufficiently long time with respect to the frequency hopping period, so it is difficult to interfere with communication of other systems, and even if there is an interference wave at a specific frequency, It is said that it is resistant to interference from other systems because it hops to a frequency.

  In the Bluetooth wireless communication system, 79 or 23 channels are provided in the 2.4 GHz band at 1 MHz intervals, and the rate is 1600 times / second based on the channel selection order set between the master side and the slave side at the start of communication. Data communication is performed by repeating frequency hopping and transmitting / receiving a desired packet to / from a counterpart wireless device using a selected channel.

Conventionally, as such a frequency hopping technique, when a packet transmission / reception error occurs in an arbitrary channel due to a radio wave transmitted from another device, adaptive frequency hopping (hereinafter referred to as AFH: Adaptive) that disables the channel is used. (Frequency Hopping) technology is used (for example, see Non-Patent Document 2 / Bluetooth 1.2).
According to this adaptive frequency hopping technique, a channel determined to be unusable is excluded from the channel selection order, so that frequency hopping is no longer performed on the channel, and other channels at the carrier frequency of the channel Wireless communication interruption due to mutual interference of radio waves and collision of packet transmission / reception in the channel with the same type of wireless communication apparatus can be reduced.

On the other hand, as with the Bluetooth wireless communication system, wireless LAN communication using various spread spectrum modulation systems as a general-purpose wireless interface that performs wireless communication using ISM (Industrial Scientific Medical) band frequencies prepared for industrial scientific medicine. There are methods (see Non-Patent Document 3, etc.).
For example, in the IEEE 802.11g wireless LAN communication system, 13 channels are provided at 2.4 MHz intervals in the 2.4 GHz band, and wireless communication is performed by a CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance) system.

  In the CSMA / CA method, first, before transmitting data from a channel to be used, it is checked whether another wireless communication apparatus is transmitting data on the channel (Carrier Sense), and further data addressed to itself is transmitted. (Sense Multiple Access). As a result, if it is determined that there is no risk of collision, data is transmitted, and if there is another wireless communication device in communication, transmission standby (Collision Avoidance) is entered. In transmission waiting, the above procedure is repeated again after waiting for a randomly assigned time. Further, when two wireless communication apparatuses collide for the first time at the same time, error recovery cannot be performed, so retransmission is performed at the higher layer level.

http://www.bluetooth.org/spec/ http://www.ericsson.com/bluetooth/files/whitepaper_on_afh_final.pdf http://grouper.ieee.org/groups/802/11/

  However, in such a conventional technique, when radio wave interference occurs between a wireless LAN communication device using various ISM bands and various devices and a Bluetooth wireless telephone, an ISM band such as a wireless LAN communication apparatus used together with the Bluetooth wireless telephone is used. There is a problem that the wireless communication environment of other wireless communication apparatuses using the wireless communication device or the wireless communication environment of the Bluetooth wireless telephone itself cannot be maintained satisfactorily.

  For example, in the AFH of the Bluetooth wireless communication method, the carrier sense operation is not performed as in the wireless LAN communication method, the packet is transmitted / received through the selected channel, and the availability of the channel is determined according to the presence or absence of the communication error. Yes. For this reason, when a Bluetooth wireless telephone is used in the communication area of the wireless LAN communication device, depending on the timing of signal transmission / reception, the Bluetooth wireless telephone preferentially secures a channel, and the channel of the frequency corresponding to the wireless LAN communication device May not be secured, and the wireless communication environment of the wireless LAN communication device may deteriorate.

  Also, when there are ISM devices that use the ISM band, such as microwave electronic devices such as microwave ovens and medical scalpels, amateur radio devices, etc., the Bluetooth wireless communication system uses AFH to select the frequency channel used by these ISM devices. In response to the occurrence of a communication error, the avoidance operation for making the channel unusable is performed. However, when processing time such as statistical processing is required in the avoiding operation, the communication quality is temporarily lowered, but the wireless communication environment of the Bluetooth wireless telephone itself is deteriorated.

  The present invention is intended to solve such problems. Even when a wireless LAN using an ISM band or various ISM devices are used in combination with a Bluetooth wireless telephone which is an extension telephone of a telephone system, wireless communication in the ISM band is possible. An object of the present invention is to provide a telephone system, a telephone control device, and a program that can maintain a good communication environment.

  In order to achieve such an object, a telephone system according to the present invention connects a plurality of extension telephones including a radio telephone having a data communication function using a Bluetooth (registered trademark) radio communication system, and the extension telephones. And a telephone control apparatus that accommodates the telephone line, and the telephone control apparatus controls the extension telephone and the telephone line to arbitrarily exchange and connect the telephone using the telephone line. The wireless telephone is a communication system that performs wireless data communication using channels sequentially selected based on arbitrary communication conditions from a plurality of channels having different carrier frequencies, and communication conditions related to wireless data communication. A communication condition selection means for acquiring an item for identification from the telephone control device, selecting it, and notifying the telephone control device; A communication condition instructing unit that designates the communication condition notified from the control device as a communication condition for wireless data communication to the communication control unit, and the telephone control device specifies a communication condition related to wireless data communication in the wireless telephone. A storage unit for storing the item, and in response to an acquisition request from the wireless telephone, notifies the wireless telephone of the item in the storage unit, and in response thereto, extracts a communication condition corresponding to the item selected by the wireless telephone Communication condition setting means for setting the wireless telephone.

  At this time, when extracting the communication condition by the communication condition setting means, the communication condition indicating whether or not the channel used in the wireless data communication is usable is extracted from the item, and when the communication condition is designated by the communication condition instruction means, the telephone control is performed. Based on the communication conditions notified from the apparatus, the communication control means may designate whether or not each channel used in wireless data communication is usable.

  The telephone control device further includes a setting telephone having an item registration means for registering an item for specifying a communication condition related to wireless data communication in the wireless telephone with the telephone control device. Item updating means for updating and storing the items in the storage unit based on the items notified from the setting telephone may be further provided.

  At this time, the setting telephone is further provided with a display unit that displays various information on the screen, and the item registration unit displays each item notified from the telephone control device on the screen when selecting an item, Any one of the items displayed on the display unit may be selected in accordance with the operation input.

  Furthermore, when selecting an item by the communication condition selection means, an item indicating a wireless LAN channel used in the wireless LAN communication method may be selected as an item, or when an item is selected by the communication condition selection means The item indicating the electronic device may be selected as the item.

  In addition, the communication condition setting means notifies the wireless telephone of the item update in response to the update to the item in the storage unit, and the communication condition selection means indicates that the item has been updated in response to the item update notification from the telephone control device. You may make it display on a display part.

  In addition, the communication condition setting means notifies the wireless telephone of the item update in response to activation of the telephone control device, and the communication condition selection means indicates that the item has been updated in response to the item update notification from the telephone control device. You may make it display on a display part.

  Further, when notifying the item by the communication condition selection means, the telephone information indicating the radio telephone to be designated for the communication condition is notified to the telephone control device, and when notifying the communication condition by the communication condition setting means, the telephone information Communication conditions may be set in a wireless telephone corresponding to the above.

  The telephone control device according to the present invention includes a plurality of extension telephones including a radio telephone having a data communication function using a Bluetooth (registered trademark) radio communication system, and a telephone that connects these extension telephones and accommodates a telephone line. A telephone control device that is used in a telephone system having a control device and realizes a call by the extension telephone using the telephone line by controlling an extension telephone and a telephone line and arbitrarily switching and connecting the wireless telephone, A storage unit for storing items for specifying communication conditions when performing wireless data communication using channels sequentially selected based on arbitrary communication conditions from a plurality of channels having different carrier wave frequencies from a telephone; In response to the acquisition request, the storage unit is notified of the item in the storage unit, and in response to the item selected by the wireless phone, Communication condition setting means for extracting the corresponding communication condition and setting it in the wireless telephone.

  The program according to the present invention includes a plurality of extension telephones including a radio telephone having a data communication function using a Bluetooth (registered trademark) radio communication system, and a telephone control apparatus for connecting the extension telephones and accommodating a telephone line. A telephone control device computer that realizes a call by the extension telephone using the telephone line by controlling the extension telephone and the telephone line to be arbitrarily exchanged and connected to each other by a wireless telephone. A step of storing an item for specifying a communication condition when performing wireless data communication using a channel sequentially selected based on an arbitrary communication condition from a plurality of channels having different carrier frequencies in a storage unit; In response to the acquisition request, the wireless telephone item is notified to the wireless telephone, and the wireless telephone is selected in response to the notification. A communication condition setting step for extracting a communication condition corresponding to the selected item and setting the communication condition to the wireless telephone is executed.

  According to the present invention, in the telephone control device, an item for specifying a communication condition related to wireless data communication with the wireless telephone is stored in the storage unit, and the communication condition setting means responds to an acquisition request from the wireless telephone. The item of the storage unit is notified to the wireless telephone, and the communication conditions corresponding to the item selected by the wireless telephone are extracted and set in the wireless telephone accordingly, so that the wireless LAN using the ISM band is used. Even when various ISM devices are used in combination with a Bluetooth radio telephone which is an extension telephone of a telephone system, the radio communication environment in the ISM band can be kept good.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a telephone system according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the telephone system according to the first embodiment of the present invention.
In this telephone system, a plurality of wireless telephones 4 (4A, 4B, 4C,...) Operating as extension telephones are connected to the wireless telephones 4 via a wired extension transmission line 5, and an analog telephone line, ISDN line, Or it is comprised from the telephone control apparatus 1 which accommodates the 1 or more telephone line 9 which consists of an IP telephone line.

  The radio telephone 4 is a curl cordless radio telephone composed of a curl cordless radio master unit (hereinafter referred to as “master unit”) 2 and a curl cordless radio slave unit (hereinafter referred to as “slave unit”) 3. The wireless telephone 4 is a telephone in which a base unit 2 having a call control function and a handset 3 having a call function are connected via a wireless transmission path using a Bluetooth wireless communication system. The base unit 2 is an extension transmission path 5. It is connected to the telephone control device 1 via.

  In the present embodiment, when wireless data communication is performed using a channel sequentially selected based on an arbitrary communication condition from a plurality of channels having different carrier frequencies in the wireless telephone 4, the telephone control device 1 causes the wireless telephone 4 to An item for specifying the communication condition related to the wireless data communication is stored in the storage unit, the item in the storage unit is notified to the wireless telephone 4 in response to the acquisition request from the wireless telephone 4, and the item is Communication conditions corresponding to the item selected by the wireless telephone are extracted and set in the wireless telephone.

[Telephone control device]
Next, the telephone control device of the telephone system according to the first embodiment of the present invention will be described in detail with reference to FIG. Here, a case will be described as an example where all of the extension telephones are composed of wireless telephones 4.

  The telephone control device 1 is a communication control device corresponding to, for example, a main device of a button telephone device, and includes an external line interface unit (hereinafter referred to as an external line I / F unit) 10 and an internal line interface unit (hereinafter referred to as an internal line I / F unit). ) 11, a switch 12, a storage unit 14, and a control unit 15.

The external line I / F unit 10 is composed of a dedicated interface circuit unit, and has a function of terminating control of the telephone line (external line) 9.
The extension I / F unit 11 includes a dedicated interface circuit unit, and has a function of performing data transmission with the radio telephone 4 (4A, 4B, 4C,...) Via the extension transmission path 5.
The switch 12 includes a dedicated switching circuit unit and has a function of exchanging and connecting transmission lines between the external line I / F unit 10 and the internal line I / F unit 11.

The storage unit 14 includes a storage device such as a memory and a hard disk, and has a function of storing various processing information and programs used for processing in the control unit 15.
Main processing information includes call control information 14A, item information 14B, and radio channel information 14C.

The call control information 14A is information used for call control of the entire telephone system, and manages the state of the telephone line 9 and each wireless telephone 4.
The item information 14 </ b> B is information indicating items for specifying communication conditions related to wireless data communication in each wireless telephone 4. FIG. 3 is a configuration example of item information. In this item information 14B, the item type and the item content are registered as a set.

  Among these, the item type is a category related to a method for specifying communication conditions such as a Bluetooth channel number, an electronic device, and a wireless LAN channel number, and the item content is a category specified by the item type such as a channel number and a model of the electronic device. This is the content of the item that is actually selected. For example, in FIG. 3, the item content “CH50 (2452 MHz)” is registered for the item type “Bluetooth channel number”, and the item content “microwave oven” is registered for the item type “electronic device”.

  The wireless channel information 14 </ b> C is information indicating communication conditions regarding wireless data communication in each wireless telephone 4. FIG. 4 is a configuration example of radio channel information. In this wireless channel information 14C, a wireless telephone ID for identifying the wireless telephone 4 and an unusable channel number of the Bluetooth wireless communication system are registered as a pair as a communication condition when performing wireless data communication with the wireless telephone. ing.

The control unit 15 has a microprocessor such as a CPU and its peripheral circuits, and has a function of realizing various functional units by cooperating the hardware and the program by reading and executing the program of the storage unit 14. is doing.
Main functional means include call control means 15A, item update means 15B, and communication condition setting means 15C.

  The call control means 15A is means for performing call control of the entire telephone system, and controls the external line I / F unit 10 and the switch 12 based on the call control information in the storage unit 14, and the extension I / F unit 11 and extension transmission. By exchanging various control information with each wireless telephone 4 via the path 5, it has a function of controlling the external line incoming / outgoing operation by the wireless telephone 4 using the communication line 9 and the internal line outgoing / incoming operation between the wireless telephones 4. ing.

  The item updating unit 15B has a function of accepting an item for specifying a communication condition related to wireless data communication in the wireless telephone 4, and a function of updating and registering the accepted item in the item information 14B of the storage unit 14. .

  The communication condition setting means 15C has a function of notifying each wireless telephone 4 of the item update in response to the item update in the item update means 15B, and each item of the item information 14B in response to an acquisition request from any wireless telephone 4. A function for notifying the wireless telephone 4, a function for extracting a communication condition corresponding to an item selected by the wireless telephone in response to this, and a function for registering the extracted communication condition in the wireless channel information 14 C of the storage unit 14 And a function of notifying the wireless telephone of the extracted communication condition and setting it.

[Wireless telephone]
Next, a radio telephone used in the telephone system according to the first embodiment of the present invention will be described in detail with reference to FIG. FIG. 2 is a block diagram showing a configuration of a radio telephone used in the telephone system according to the first embodiment of the present invention.

  The wireless telephone 4 is a telephone in which a base unit 2 having a call control function and a handset 3 having a call function are connected via a wireless transmission path using a Bluetooth wireless communication system. The base unit 2 is an extension transmission path 5. It is connected to the telephone control device 1 via.

[Base unit]
The base unit 2 includes a transmission interface unit (hereinafter referred to as a transmission I / F unit) 20, an audio processing unit 21, a display unit 22, an operation input unit 23, a storage unit 24, a base unit control unit 25, and a wireless module 26. Is provided.

The transmission I / F unit 20 includes a dedicated interface circuit unit, and has a function of performing data transmission with the telephone control device 1 via the extension transmission path 5.
The audio processing unit 21 includes a dedicated audio processing circuit, a speaker (not shown), and a microphone (not shown), and the audio data received by the transmission I / F unit 20 in response to an instruction from the parent device control unit 25. Has a function of decoding the sound signal into a sound signal and outputting it from the speaker, and a function of coding the sound signal input from the microphone into sound data and outputting it to the transmission I / F unit 20.

The display unit 22 includes a display device such as an LCD or an LED, and has a function of displaying a display for call control and an item selection screen for setting communication conditions in response to an instruction from the parent device control unit 25.
The operation input unit 23 includes a dial key, item selection operation keys, and various switches, and has a function of detecting a user operation and outputting it to the parent device control unit 25.
The storage unit 24 includes a storage device such as a memory, and has a function of storing various processing information and programs used for processing in the parent device control unit 25.

The base unit control unit 25 has a microprocessor such as a CPU and its peripheral circuits, and reads and executes the program in the storage unit 14 so that the hardware and the program cooperate to realize various functional units. have.
Main functional means include call control means 25A, item registration means 25B, communication condition selection means 25C, and communication condition instruction means 25D.

  The call control means 25A exchanges various control information with the telephone control device 1 through the transmission I / F unit 20 and the extension transmission line 5, and exchanges various control information with the slave unit 3 through the wireless module 26. Thus, it has a function of controlling the parent device 2 and the child device 3 to control the outgoing / incoming operation using the communication line 9 and the outgoing / incoming operation with the other wireless telephones 4.

  The item registration unit 25B acquires each item used for specifying the communication condition regarding the wireless data communication between the base unit 2 and the handset 3 of the wireless telephone 4 from the telephone control device 1 and displays the screen on the display unit 22. It has a function and a function of selecting an item that specifically uses a communication condition according to an operation and registering it in the telephone control device 1.

  The communication condition selection means 25C obtains each item for specifying the communication condition regarding the wireless data communication between the base unit 2 and the handset 3 of the wireless telephone 4 from the telephone control device 1 and displays the screen on the display unit 22. It has a function of displaying and a function of selecting an item for specifying a communication condition according to an operation and notifying the telephone control device 1 of the selected item.

  The communication condition instructing unit 25D has a function of designating the communication condition notified from the telephone control device 1 to the wireless module 26 as a communication condition for wireless data communication between the parent device 2 and the child device 3 of the wireless telephone 4 concerned. is doing.

The wireless module 26 is a functional module that provides a wireless interface compliant with the Bluetooth wireless communication system, and various functional units are integrally mounted as one constituent element constituting the parent device 2.
The main functional units provided in the wireless module 26 include a wireless transmission / reception unit 27, a module storage unit 28, and a module control unit 29.

  The wireless transmission / reception unit 27 is a circuit unit that transmits / receives a wireless signal in accordance with the Bluetooth wireless communication method, and has a function of performing data communication via the wireless line 6 by transmitting / receiving a wireless signal to / from the slave unit 3. Have. At this time, the radio transmission / reception unit 27 repeats frequency hopping based on an instruction from the module control unit 29 for 79 channels or 23 channels provided at 1 MHz intervals in the 2.4 GHz band based on the frequency hopping spread spectrum modulation method, Data communication is performed by transmitting / receiving a desired packet to / from the handset 3 using the channel selected by the frequency hopping.

The module storage unit 28 includes a storage device such as a memory, and has a function of storing various processing information used for processing operations in the module control unit 29. As main processing information stored in the module storage unit 28, there is a channel table 28A.
The channel table 28A is processing information for managing the availability of each channel that is sequentially selected by the frequency hopping spread spectrum modulation method, and the availability information of the channel corresponds to each channel number as shown in FIG. It is registered with it. In the example of FIG. 5, “usable” is registered for all channel numbers.
In addition, the module storage unit 28 may store a program for realizing various functional units by being read and executed by the module control unit 29 in advance.

  The module control unit 29 cooperates with hardware composed of a CPU and its peripheral circuits, a memory (not shown) provided in these CPUs or peripheral circuits, and a program stored in the module storage unit 28 in advance. Functional means for controlling the wireless transmission / reception unit 27 in accordance with the Bluetooth wireless communication system is realized.

The main functional means realized by the module control unit 29 is a communication control means 29A.
The communication control unit 29A controls the wireless transmission / reception unit 27 to control data communication between the child device 3 and the parent device control unit 25, and the frequency hopping / spread spectrum modulation method. And a function of sequentially selecting one of the channels based on the order of channel selection decided at the start of data communication and instructing the wireless transmission / reception unit 27. At this time, the communication control unit 29A refers to the channel table 28A of the module storage unit 28, and if the next channel selected in accordance with the channel selection order is not usable, the communication control unit 29A skips to the next available channel and uses the channel. Select the channel.

  In addition, the communication control means 29A has a function of notifying the parent device control unit 25 of the communication status of packet transmission / reception with the child device 3 in the channel selected by frequency hopping during data communication, and an instruction from the parent device control unit 25. In response to the function, the channel table 28A of the module storage unit 28 updates the availability information of an arbitrary channel, and the channel table 28A of the module storage unit 28 is notified to the slave unit 3 in response to an instruction from the parent device control unit 25. And a function of updating.

[Cordless handset]
The handset 3 includes a voice processing unit 31, a display unit 32, an operation input unit 33, a storage unit 34, a handset control unit 35, and a wireless module 36.

  The audio processing unit 31 includes a dedicated audio processing circuit, a speaker (not shown), and a microphone (not shown), and receives audio data received by the wireless module 36 in response to an instruction from the child device control unit 35. And a function of encoding a sound signal input from the microphone into sound data and outputting the sound data to the wireless module 36.

The display unit 32 includes a display device such as an LCD or an LED, and has a function of performing display for call control in response to an instruction from the child device control unit 35.
The operation input unit 33 includes operation keys such as dial keys and various switches, and has a function of detecting a user operation and outputting the operation to the child device control unit 35.
The storage unit 34 includes a storage device such as a memory, and has a function of storing various processing information and programs used for processing in the slave unit control unit 35.

The slave unit control unit 35 has a microprocessor such as a CPU and its peripheral circuits, and reads and executes the program in the storage unit 14 to realize various functions by cooperating the hardware and the program.
Main functions include a function for controlling the operation state of the child device 3 by exchanging various control information with the parent device 2 via the wireless line 6 and the wireless module 36, and an operation detected by the operation input unit 33. Has a function of notifying the parent machine 2 of the contents of

The wireless module 36 is a functional module that provides a wireless interface that is compliant with the Bluetooth wireless communication system, and various functional units are integrally mounted as one component constituting the handset 3.
The specific configuration of the wireless module 36 is the same as that of the wireless module 26 of the parent device 2, and detailed description thereof is omitted here.

[Operation of First Embodiment]
Next, the operation of the telephone system according to the first embodiment of the present invention will be described with reference to FIG. FIG. 6 is a sequence diagram showing a communication condition setting operation as the operation of the telephone system according to the first embodiment of the present invention.
Here, an example of an operation of registering communication condition specifying items from the wireless telephone 4A to the telephone control apparatus 1 and setting its own communication conditions based on the items registered in the telephone control apparatus 1 by the wireless telephone 4B is taken as an example. Will be described.

When the operation input unit 23 detects an item registration request operation (step 100), the base unit control unit 25 of the base unit 2 constituting the wireless telephone 4A uses the item registration unit 25B to register for registration of communication condition items. A screen request is transmitted from the transmission I / F unit 20 to the telephone control device 1 via the extension transmission path 5 (step 101).
When the control unit 15 of the telephone control apparatus 1 receives a registration screen request from the wireless telephone 4A via the extension I / F unit 11, the item update unit 15B causes registration screen data (not shown) from the storage unit 14 to be received. Is sent from the extension I / F unit 11 to the radio telephone 4A via the extension transmission path 5 (step 102).

The item registration unit 25B of the base unit 2 receives the setting screen data from the telephone control device 1 via the transmission I / F unit 20, displays the registration screen data on the display unit 22, and allows the user operation. Acquire necessary information accordingly.
FIG. 7 is a display example of a registration screen. Screen 200 is a target phone registration screen that is initially displayed in the item registration operation. Here, item types such as “1. Wireless LAN channel”, “2. Bluetooth channel (frequency)”, and “3. Electronic device” are displayed as item registration methods. Is selected.

For example, when “1. Wireless LAN channel” is selected as the setting method on the screen 200, a wireless LAN channel item selection screen 201 is displayed. Here, channel numbers used in wireless LAN devices used in the vicinity of the wireless telephone 4A are displayed as items, and any item is selected as a registration request item in accordance with the user's operation.
In addition, when “2. Bluetooth channel (frequency)” is selected as the setting method on the screen 210, the screen 211 is for selecting a Bluetooth channel item. Here, the channel number or carrier frequency (center frequency) used in the wireless telephone 4A is displayed as an item, and any item is selected according to the user's operation.

On the screen 210, when “3. Electronic device” is selected as the setting method, an electronic device item selection screen 213 is displayed. Here, the names (model names and product names) of electronic devices (ISM devices) used in the vicinity of the wireless telephone 4A are displayed as items, and any item is selected according to the user's operation.
The item registration unit 25B detects the user's operation on these screens with the operation input unit 23 (step 103), and sends a registration request including the registration request item acquired according to the operation from the transmission I / F unit 20 to the extension. It transmits to the telephone control apparatus 1 via the transmission line 5 (step 104).

When the item update unit 15B of the telephone control device 1 receives a registration request from the wireless telephone 4A via the extension I / F unit 11, the item update unit 15B acquires the registration request item included in the registration request, and the item in the storage unit 14 Update information 14B is stored (step 105).
For example, when the wireless LAN channel number “CH5” is selected on the screen 201, the item type “wireless LAN channel number” and the item content “CH5” are notified from the wireless telephone 4A to the telephone control apparatus 1 as registration request items. The item information 14B is updated. As a result, as shown in FIG. 8, a new item consisting of the item type “wireless LAN channel number” and the item content “CH5” is added to the item information 14B.

  In response to the storage update of the item information 14B, the control unit 15 of the telephone control device 1 reads item update screen data (not shown) from the storage unit 14 by the communication condition setting unit 15C, and the extension I / F unit 11 To each wireless telephone 4 via the extension transmission line 5 (step 106).

When receiving the item update screen data from the telephone control device 1 via the transmission I / F unit 20, the base unit control unit 25 of the base unit 2 constituting each wireless telephone 4 updates the item by the item registration unit 25B. The screen data is displayed on the screen by the display unit 22 (step 107).
Thus, the fact that the item information 14B of the telephone control device 1 has been updated is displayed on the screen of the display unit 22 of each wireless telephone 4 and is notified to each user.

In response to this, when the base unit control unit 25 of the base unit 2 constituting the wireless telephone 4B detects a communication condition setting request operation by the operation input unit 23 (step 110), the communication condition selection unit 25C causes the communication condition selection unit 25C to A request for a setting screen used for setting is transmitted from the transmission I / F unit 20 to the telephone control apparatus 1 via the extension transmission path 5 (step 111).
When the control unit 15 of the telephone control device 1 receives the setting screen request from the wireless telephone 4B via the extension I / F unit 11, the communication condition setting unit 15C refers to the item information 14B in the storage unit 14 (Step 112), setting screen data is generated and notified from the extension I / F unit 11 to the wireless telephone 4B via the extension transmission path 5 (Step 113).

The communication condition selection means 25C of the base unit 2 receives the setting screen data from the telephone control device 1 via the transmission I / F unit 20, displays the setting screen data on the display unit 22, and operates by the user. Acquire necessary information according to
FIG. 9 is a display example of the item update screen and the setting screen. In FIG. 9, a screen 210 is an item update screen, a screen for notifying that the item information 14 </ b> B has been updated by the telephone control device 1, and a screen 211 is a setting displayed in response to a communication condition setting request. It is a screen. In the wireless telephone 4B, the screen 211 is displayed by performing an operation on the screen 210 to set the communication condition with the updated item (step 110).

On the screen 211, items “1. Wireless LAN channel CH5”, “2. Bluetooth channel CH50 (2452 MHz)”, and “3. Microwave oven” are displayed as items for specifying communication conditions. One of the items is selected accordingly.
The communication condition selection means 25C detects the user's operation on these screens with the operation input unit 23 (step 114), and transmits the setting request including the target telephone identification information and the communication condition specifying item acquired according to the operation. The data is transmitted from the I / F unit 20 to the telephone control device 1 via the extension transmission line 5 (step 115).

  When the communication condition setting unit 15C of the telephone control device 1 receives a setting request from the wireless telephone 4B via the extension I / F unit 11, communication related to wireless data communication is performed from the communication condition specifying item included in the setting request. As a condition, a channel that cannot be used by the wireless telephone 4B is extracted (step 120).

In the Bluetooth wireless communication system, a unique channel number is assigned to each carrier frequency fa used in wireless data communication. FIG. 10 is an explanatory diagram showing the channel configuration of the Bluetooth wireless communication system, where 2402 MHz is channel 0 (CH0), and 79 channels are set from this to every 2MHz channel 78 (CH78). .
On the other hand, in the wireless LAN communication system, a unique channel number is assigned to each carrier frequency fb used in wireless data communication. FIG. 11 is an explanatory diagram showing the channel configuration of the wireless LAN communication system. The channel 1 (CH1) to channel 13 (CH13) set every 5 MHz from 2412 MHz to 2472 MHz and the last channel 14 of 2484 MHz are combined. 14 channels are set.

As described above, the Bluetooth communication device and the wireless LAN communication device have overlapping frequency bands. Therefore, when these communication devices are used at a short distance, the carrier frequency is close depending on the channel to be used. Will occur.
Based on these channel configurations, the communication condition setting means 15C extracts channels that cannot be used by the wireless telephone 4B as communication conditions related to wireless data communication from the communication condition specifying items selected by the wireless telephone 4B.

The carrier frequency fa used in the Bluetooth wireless communication system is obtained by the equation (1) using the channel number X (X is an integer of 0 to 78).
fa = 2402 (MHz) + X x 1 (MHz) (1)
Further, the carrier frequency fb used in the wireless LAN communication method is obtained by Expression (2) using the channel number Y (Y is an integer of 1 to 14).
fb = 2407 (MHz) + Y × 5 (MHz) + fb '(MHz) (2)
However, fb ′ = 0 when Y = 1 to 13, and fb ′ = 7 when Y = 14.

  At this time, in the wireless LAN communication method, the frequency band used at the time of wireless data communication is a used frequency band fbw having a bandwidth Δf of about 10 MHz, for example, with the carrier frequency fb as the center. FIG. 12 is an explanatory diagram showing the channel correspondence between the Bluetooth wireless communication system and the wireless LAN communication system. For example, when channel 5 (CH5) is used in a wireless LAN communication apparatus, the carrier frequency fb is 2432 MHz. When Δf = 10 MHz, the use frequency band fbw is b ± Δf, that is, 2422 MHz to 2442 MHz. In this case, the channel numbers that cannot be used in the Bluetooth wireless communication system are channel 20 (CH20) to channel 40 (CH40).

Therefore, the unusable channel Xw in the Bluetooth wireless communication system can be obtained from the channel number Y of the wireless LAN communication system selected as the communication condition specifying item by the equation (3).
Xw = {Y + 1 (MHz)} × 5 (MHz) + {fb '/ 1 (MHz)} ± {Δf / 1 (MHz)} (3)
However, fb ′ = 0 when Y = 1 to 13, and fb ′ = 7 when Y = 14.

In this way, the communication condition setting means 15C extracts channels that cannot be used by the wireless telephone 4B as communication conditions, and then registers them in the wireless channel information 14C of the storage unit 14 (step 111). As a result, as shown in FIG. 13, “20 to 40” is registered in the unusable channel number of the wireless telephone 4B in the wireless channel information 14C.
Further, the communication condition setting unit 15C notifies the wireless telephone 4B of a setting notification including an unusable channel, thereby setting the communication condition in the wireless telephone 4B (step 120).

When the base unit control unit 25 of the base unit 2 constituting the wireless telephone 4B receives the setting notification from the telephone control device 1 via the transmission I / F unit 20, the communication condition instructing unit 25D includes the setting notification. The unusable channel to be used is designated to the wireless module 26 (step 121).
The module control unit 29 of the wireless module 26 registers the unusable channel designated by the communication condition instruction unit 25D in the channel table 28A of the module storage unit 28 by the communication control unit 29A. Thereby, as shown in FIG. 14, unusable is registered with respect to channel numbers 20-40.

  Further, the communication condition setting unit 15C instructs the wireless module 26 to synchronize the channel table with the slave unit 3. In response to this, the communication control unit 29A reads the channel table 28A of the module storage unit 28 and notifies the slave unit 3 from the wireless transmission / reception unit 27 via the wireless line 6. The wireless module 36 of the child device 3 updates its own module table based on the contents of the channel table 28A notified from the wireless module 26 of the parent device 2. As a result, the contents of the module table are synchronized between the parent device 2 and the child device 3, the same unusable channels are recognized, and a series of communication condition setting operations is completed.

  As described above, the present embodiment provides a wireless telephone with communication control means for performing wireless data communication using channels sequentially selected based on arbitrary communication conditions from among a plurality of channels having different carrier frequencies, and wireless data communication. Communication condition selection means for acquiring and selecting items for specifying communication conditions related to the telephone control device and notifying the telephone control device, and communication control using the communication conditions notified from the telephone control device as communication conditions for wireless data communication Communication condition indicating means to be specified in the means, and the telephone control device stores items for specifying communication conditions relating to wireless data communication with the wireless telephone, and is acquired from the wireless telephone by the communication condition setting means. In response to a request, the wireless telephone is notified of the item in the storage unit, and in response to this, the communication condition corresponding to the item selected by the wireless telephone is extracted. And to set to the wireless telephone Te.

As a result, even when a wireless LAN or various ISM devices using the ISM band are used in combination with a Bluetooth wireless telephone that is an extension telephone of the telephone system, the wireless communication environment in the ISM band can be kept good.
In addition, each wireless telephone can set the communication conditions based on the items stored in the telephone control device, and the same communication conditions can be easily set in each wireless telephone installed in the same communication environment. it can.

  At this time, when extracting the communication condition by the communication condition setting means, the communication condition indicating whether or not the channel used in the wireless data communication is usable is extracted from the item, and when the communication condition is designated by the communication condition instruction means, the telephone control is performed. Since the communication control means specifies whether or not each channel used in wireless data communication can be used based on the communication condition notified from the device, the unusable channel in the Bluetooth wireless communication system used in actual control can be specified from any item. Extraction can be performed centrally by the telephone control device, and a telephone system having a very simple configuration can be realized as compared with the case where each wireless telephone extracts unusable channels.

Also, using one of the extension telephones as a setting telephone, select an item for specifying communication conditions related to wireless data communication with the wireless telephone, register it in the telephone control device, and set it with the item update means of the telephone control device. Since the items in the storage unit are updated and stored based on the items notified from the telephone, there is no need to separately provide a device for item registration.
In this embodiment, the case where the wireless telephone 4A is a setting telephone used for item registration has been described as an example. However, the setting telephone does not have to be the wireless telephone 4, for example, the handset is connected via a curl cord. A general extension telephone connected to the telephone body may be used.

  Further, when an item is selected by the item registration means of the setting telephone, each item notified from the telephone control device is displayed on the display unit, and each item displayed on the display unit according to an arbitrary operation input is displayed. Since one of them is selected, items can be easily selected and registered.

At this time, an item indicating a wireless LAN channel used in the wireless LAN communication method may be selected and registered as an item, and knowledge about the channel configuration of the wireless LAN communication method or the Bluetooth wireless communication method and its carrier frequency is required. It is possible to easily set items without.
In addition, an item indicating an electronic device (ISM device) may be selected and registered as an item, and knowledge about the frequency band used for the electronic device, the channel configuration of the Bluetooth wireless communication system, and the carrier frequency is required. You can easily set items.

In addition, an item indicating a channel of the Bluetooth wireless communication system may be selected and registered as an item, and a channel used in another Bluetooth communication device can be easily set. As a result, it is possible to easily realize channel segregation with other Bluetooth communication devices, and to use channels without any bias between the two.
In addition, an item indicating the carrier frequency of the Bluetooth wireless communication system may be selected and registered as an item, and interference with an electromagnetic wave having a predetermined frequency emitted from any ISM device can be easily confirmed without AFH. Can be avoided.

  Further, the communication condition setting means 15C of the telephone control device 1 notifies the wireless telephone 4 of the item update in response to the activation of the telephone control apparatus, and the communication condition selection means 25C of the wireless telephone 4 receives the update from the telephone control device 1. Since the fact that the item has been updated is displayed on the display unit 22 in response to the item update notification, it is not necessary to check whether the item has been updated from the wireless telephone 4, thereby reducing the burden on the user.

  In addition, when the communication condition selection unit of the setting telephone notifies the item, the telephone control device is notified of the telephone information indicating the radio telephone to be designated for the communication condition, and the communication condition setting unit of the telephone control apparatus When notifying the condition, the communication condition is set for the wireless telephone corresponding to the telephone information, so that the communication condition can be set for each wireless telephone from the setting telephone, and the communication condition is individually set for each wireless telephone. Compared to the above, the maintenance work of the telephone system can be simplified.

[Second Embodiment]
Next, a telephone system according to a second embodiment of the present invention is described.
In the first embodiment (see FIG. 1), the case has been described in which only the items registered in the telephone control device 1 are notified to the radio telephone 4 when setting communication conditions. In the present embodiment, a wireless telephone set with communication conditions using each item is registered in the item information 14B, and when setting communication conditions with an arbitrary wireless telephone, the corresponding item is used in addition to each item. A case where the identification information of the wireless telephone set with the communication conditions is displayed will be described.

  Compared with the first embodiment, the configuration of the telephone system according to the present embodiment includes a column of “set wireless telephone ID” in item information 14B, as shown in FIG. The identification information of the wireless telephone 4 for which the communication condition is set using the item is stored.

In the example of FIG. 15, an item indicating the communication condition “Bluetooth channel number” is “CH50 (2452 MHz)” is used in the wireless telephone “4C”, and an item indicating the communication condition “electronic device” is “electronic range”. It is recorded that the item used for the wireless telephone “4C” and the item indicating the communication condition “wireless LAN channel number” “CH4” is used for the wireless telephone “4B”.
The other configuration of the telephone control device 1 and the configuration of the radio telephone 4 are the same as those in the first embodiment described above, and detailed description thereof is omitted here.

[Operation of Second Embodiment]
Next, the operation of the telephone system according to the second embodiment of the present invention will be described with reference to FIG. 6 described above.
In step 111 of FIG. 6, when the setting screen request is received from the wireless telephone 4B, the communication condition setting means 15C of the telephone control device 1 refers to the item information 14B in the storage unit 14 (step 112), and sets the screen data. Is transmitted from the extension I / F unit 11 to the radio telephone 4B via the extension transmission path 5 (step 113).

  FIG. 16 is an example of a communication condition setting screen. In this setting screen example, for each item registered in the storage unit 14 of the telephone control device 1, in addition to the item type and item content, identification information of the wireless telephone 4 in which the item is used, for example, an extension number is displayed. Has been.

Normally, the radio wave environment of a radio telephone does not change so much when the installation position is close to a certain extent. For example, if radio interference occurs with a radio LAN communication device in any radio telephone, it is close to the radio telephone. There is a high possibility that the same radio wave interference will occur in the installed radio telephone.
As shown in FIG. 17, when the radio telephone 4A and the radio telephone 4B are close to each other and the radio interference at the radio telephone 4A is avoided by setting the communication conditions, the communication conditions for the radio interference 300 used by the radio telephone 4B are as follows. There is a high possibility that the wireless telephone 4A is also effective.

  Therefore, as in the present embodiment, for each item, the identification information of the wireless telephone 4 for which the communication condition is set using the item is displayed on the setting screen, so that the validity of the validity can be referred to the past setting history. High communication conditions can be set easily.

[Third Embodiment]
Next, a telephone system according to a third embodiment of the present invention will be described with reference to FIG. FIG. 18 is a configuration example of a channel number extraction table used in the telephone system according to the third embodiment of the present invention.

In the first embodiment described above, when the telephone control device 1 extracts a communication condition for disabling the Bluetooth wireless communication system channel from the wireless LAN channel selected as the communication condition specifying item, the expression (3) The case where the channel number of the Bluetooth wireless communication system is obtained using the above has been described as an example.
In this embodiment, a case will be described in which the channel number of the Bluetooth wireless communication system is obtained using the channel number extraction table of FIG. The configuration of the telephone system is the same as that of the first embodiment described above, and a description thereof is omitted here.

In the channel number extraction table of FIG. 18, the channel number Y of the wireless LAN channel and the channel number of the channel of the Bluetooth wireless communication system corresponding to the used frequency band of these channels are registered as a set. At this time, it is necessary to register the correspondence between both in consideration of the frequency band Δf used in the wireless LAN communication system.
In the communication condition setting means 15C of the telephone control device 1, based on the channel number extraction table, from the communication condition specifying item selected by the item selection means 18B, a channel that cannot be used by the wireless telephone 4 as a communication condition related to wireless data communication. To extract.

  As described above, in the present embodiment, when extracting communication conditions related to wireless data communication, the channel number extraction table that stores the correspondence between the communication condition specifying item and the channel number of the Bluetooth wireless communication method is used. Since the channels to be disabled are extracted, a desired unusable channel can be extracted very easily.

[Extended embodiment]
In each of the above embodiments, the case where the Bluetooth wireless communication system is used when connecting the base unit 2 and the handset 3 via a wireless line in the wireless telephone 4 has been described as an example. The usage is not limited to this. For example, even if the extension telephone uses the Bluetooth wireless communication system for data communication with other terminal devices, the extension telephone is regarded as the wireless telephone 4. Each embodiment can be carried out in the same manner as described above, and the same effects can be obtained.

  In each of the above embodiments, the case where the use frequency bandwidth Δf of the wireless LAN communication method is 10 MHz has been described as an example. However, the present invention is not limited to this, and the wireless LAN communication device actually used is not limited to this. The used frequency bandwidth Δf may be selected according to the frequency characteristics and the interference performance of the wireless telephone 4.

  In each of the above embodiments, the case where the communication condition selection unit 25C and the communication condition instruction unit 25D are provided in the parent device control unit 25 of the parent device 2 constituting the wireless telephone 4 has been described as an example. Any or all of the means may be realized by the module control unit 29 of the wireless module 26 and can be implemented in the wireless module as one of the frequency hopping functions of the Bluetooth wireless communication system. As a result, the processing in the base unit control unit 25 can be greatly reduced, the program executed in the base unit control unit 25 can be simplified, and an inexpensive wireless communication apparatus as a whole can be realized.

It is a block diagram which shows the structure of the telephone system concerning the 1st Embodiment of this invention. It is a block diagram which shows the structure of the radio | wireless telephone set used with the telephone system concerning the 1st Embodiment of this invention. It is an example of composition of item information. It is an example of a structure of radio channel information. It is a structural example of a channel table. It is a sequence diagram which shows communication condition setting operation | movement as operation | movement of the telephone system concerning the 1st Embodiment of this invention. It is a display example of a registration screen. It is an example of composition of item information (after registration). It is a display example of an item update screen and a setting screen. It is explanatory drawing which shows the channel structure of a Bluetooth radio | wireless communication system. It is explanatory drawing which shows the channel structure of a wireless LAN communication system. It is explanatory drawing which shows the channel correspondence of a Bluetooth wireless communication system and a wireless LAN communication system. It is an example of registration of wireless channel information. It is an example of registration of a channel table. It is an example of composition of item information. It is a display example of a setting screen. It is explanatory drawing which shows the relationship between the installation position of a radio telephone, and radio wave interference. It is an example of a structure of a channel number extraction table.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Telephone control apparatus, 10 ... External line I / F part, 11 ... Extension I / F part, 12 ... Switch, 14 ... Memory | storage part, 14A ... Call control information, 14B ... Item information, 14C ... Radio channel information, 15 ... Control unit, 15A ... call control means, 15B ... item update means, 15C ... communication condition setting means, 2 ... master unit, 20 ... transmission I / F part, 21 ... voice processing part, 22 ... display part, 23 ... operation input Unit 24, storage unit 25, parent device control unit 25A, call control unit, 25B item registration unit, 25C communication condition selection unit 25D communication condition instruction unit 26 wireless module 27 wireless transmission / reception unit 28 ... Module storage unit, 28A ... Channel table, 29 ... Module control unit, 29A ... Communication control means, 3 ... Slave unit, 31 ... Audio processing unit, 32 ... Display unit, 33 ... Operation input unit, 34 ... Storage unit 35 ... Slave unit control , 36 ... radio module, 4, 4A, 4B, 4C ... radiotelephone, 5 ... extension transmission line, 6 ... radio line, 9 ... communication line.

Claims (11)

A plurality of extension telephones including a wireless telephone having a data communication function using a Bluetooth (registered trademark) wireless communication system; and a telephone control device for connecting the extension telephones and accommodating a telephone line; A telephone system that realizes a call by the extension telephone using the call line by controlling the extension telephone and the call line to be arbitrarily switched and connected,
The wireless telephone includes a communication control means for performing wireless data communication using a channel sequentially selected based on an arbitrary communication condition from among a plurality of channels having different carrier frequencies, and for specifying a communication condition related to the wireless data communication Communication condition selection means for acquiring and selecting an item from the telephone control apparatus and notifying the telephone control apparatus, and specifying the communication condition notified from the telephone control apparatus to the communication control means as a communication condition for the wireless data communication Communication condition indicating means for
The telephone control device stores an item for specifying communication conditions relating to wireless data communication in the wireless telephone, and sends the item in the storage to the wireless telephone in response to an acquisition request from the wireless telephone. A telephone system comprising: communication condition setting means for notifying, extracting communication conditions corresponding to an item selected by the wireless telephone in accordance with the notification, and setting the communication condition to the wireless telephone. The telephone system according to claim 1, wherein
The communication condition setting means, when extracting the communication condition, extracts a communication condition indicating whether or not a channel used in the wireless data communication is usable from the item,
The communication condition instructing means, when specifying the communication condition, specifies to the communication control means whether or not to use each channel used in the wireless data communication based on the communication condition notified from the telephone control device. And phone system. The telephone system according to claim 1, wherein
A telephone set for setting comprising item registration means for registering an item for specifying a communication condition related to wireless data communication with the wireless telephone set in the telephone control device, which is any of the extension telephones;
The telephone control device further includes item updating means for updating and storing items in the storage unit based on items notified from the setting telephone. The telephone system according to claim 3,
The setting telephone further includes a display unit for displaying various information on a screen,
The item registration means displays each item notified from the telephone control device on the screen when selecting the item, and displays each item displayed on the display unit according to an arbitrary operation input. A telephone system characterized by selecting one of them. The telephone system according to claim 4, wherein
The communication condition selecting means, when selecting the item, selects an item indicating a wireless LAN channel used in a wireless LAN communication system as the item. The telephone system according to claim 4, wherein
The communication condition selecting means, when selecting the item, selects an item indicating an electronic device as the item. The telephone system according to claim 3,
The communication condition setting means notifies the wireless telephone of an item update in response to an update to the storage unit item,
The communication system selecting means displays on the display section that the item has been updated in response to an item update notification from the telephone control device. The telephone system according to claim 3,
The communication condition setting means notifies item update to the wireless telephone according to the activation of the telephone control device,
The communication system selecting means displays on the display section that the item has been updated in response to an item update notification from the telephone control device. The telephone system according to claim 1, wherein
The communication condition selection means, when notifying the item, notifies the telephone control device of telephone information indicating a wireless telephone that is a target of the communication condition specification,
The communication condition setting means sets the communication condition to a radio telephone corresponding to the telephone information when notifying the communication condition. Used in a telephone system having a plurality of extension telephones including a radio telephone having a data communication function using a Bluetooth (registered trademark) wireless communication system, and a telephone control device for connecting the extension telephones and accommodating a telephone line, A telephone control device that realizes a call by the extension telephone using the call line by controlling the extension telephone and the call line to be arbitrarily switched and connected,
A storage unit for storing items for specifying communication conditions when performing wireless data communication using channels sequentially selected based on arbitrary communication conditions from a plurality of channels having different carrier frequencies in the wireless telephone;
In response to an acquisition request from the wireless telephone, the storage unit is notified of the item in the storage unit, and in response to this, the communication condition corresponding to the item selected by the wireless telephone is extracted and set in the wireless telephone A telephone control device comprising: communication condition setting means. Used in a telephone system having a plurality of extension telephones including a radio telephone having a data communication function using a Bluetooth (registered trademark) wireless communication system, and a telephone control device for connecting the extension telephones and accommodating a telephone line, In the computer of the telephone control device that realizes a call by the extension telephone using the call line by controlling the extension telephone and the call line to be arbitrarily switched and connected,
Storing in the storage unit an item for specifying a communication condition when performing wireless data communication using a channel sequentially selected based on an arbitrary communication condition from a plurality of channels having different carrier frequencies in the wireless telephone; ,
In response to an acquisition request from the wireless telephone, the storage unit is notified of the item in the storage unit, and in response to this, the communication condition corresponding to the item selected by the wireless telephone is extracted and set in the wireless telephone A program that executes the communication condition setting step.

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