JP4784489B2 - Call system - Google Patents

Description

  The present invention relates to a call system.

2. Description of the Related Art Conventionally, a call system is known that includes a parent device connected to a public line and a child device connected to the parent device via a wireless line (for example, Patent Document 1).
In addition, a call system is also known that is configured to store telephone numbers of a plurality of mobile phones in a slave unit and operate the mobile phones as a base unit (for example, Patent Document 2).
In a call system including a parent device connected to a network and a child device connected to the parent device via a wireless line, by transmitting data acquired by the parent device via the network line to the child device, A device in which a slave device is provided with a browser function is also known (for example, Patent Document 3).
JP 2003-244766 A JP 2002-135409 A Japanese Utility Model Publication No. 2003-348254

  However, in a conventional call system including a parent device and a child device, only a predetermined child device can be used for a predetermined parent device, and the number and types of child devices are limited, and various It did not meet the needs.

  The subject of this invention is providing the telephone system which can select the subunit | mobile_unit connected to a main | base station more freely.

The invention according to claim 1 is a call system comprising a parent device connected to a public line, and a child device connected to the parent device via a wireless line.
The base unit is
Authentication means for authenticating the slave connected to the wireless line based on a wireless LAN standard;
A first call means for making a call by communication connection based on the DLNA standard, and a handset connected to the wireless line;
With
The slave is
Retrieval acquisition means for searching the master unit and other slave units connected to the radio line and acquiring identification information of the searched master unit and other slave units when connecting to the radio line When,
Storage means for storing identification information of the master unit and other slave units acquired by the search acquisition unit;
Display control means for displaying a list of identification information of the master unit and other slave units stored in the storage unit on a display unit;
A selection means for selecting a parent device or a child device to be connected from among the identification information of the parent device and other child devices displayed on the display unit;
A second call means for making a call by communication connection based on the DLNA standard with the parent device or the child device selected by the selection means;
When the slave unit newly connected to the wireless line is authenticated by the authentication means, the identification information of the slave unit is acquired from the slave unit, based on the acquired identification information of the slave unit, Updating means for updating the storage means;
It is characterized by having.

The invention according to claim 2 is a call system comprising a parent device connected to a public line, and a child device connected to the parent device via a wireless line,
The base unit is
Comprising authentication means for authenticating the slave connected to the wireless line based on a wireless LAN standard;
The slave is
Retrieval acquisition means for searching the master unit and other slave units connected to the radio line and acquiring identification information of the searched master unit and other slave units when connecting to the radio line When,
Call means for making a call by communication connection based on the DLNA standard with the other slave units searched by the search acquisition means;
It is characterized by having.

According to a third aspect of the present invention, there is provided a call system comprising: a parent device connected to a public line; and a child device connected to the parent device via a wireless line;
The base unit is
Authentication means for authenticating the slave connected to the wireless line based on a wireless LAN standard;
A first call means for making a call by communication connection based on the DLNA standard, and a handset connected to the wireless line;
With
The slave is
Retrieval acquisition means for searching the master unit and other slave units connected to the radio line and acquiring identification information of the searched master unit and other slave units when connecting to the radio line When,
Second call means for making a call by communication connection based on the DLNA standard with the master unit and other slave units searched by the search acquisition unit;
It is characterized by having.

According to a fourth aspect of the present invention, in the call system according to the third aspect,
The slave is
Storage means for storing identification information acquired by the search acquisition means;
Display control means for displaying a list of identification information of the master unit and other slave units stored in the storage unit on a display unit;
A selection means for selecting a parent device or a child device to be connected from among the identification information of the parent device and other child devices displayed on the display unit;
With
The second call means is characterized in that a call is established by communication connection with the master unit or the slave unit selected by the selection means based on the DLNA standard.

  According to the first aspect of the present invention, in the master unit, the slave unit connected to the wireless line is authenticated by the authentication unit based on the wireless LAN standard, and the slave unit connected to the wireless line by the first call unit When a call is made by communication connection with a machine based on the DLNA standard, and the slave unit is connected to the radio line by the search acquisition means, the master unit and other slave units connected to the radio line are The identification information of the retrieved master unit and other slave units is acquired, and the second call means establishes communication connection with the master unit and other slave units searched by the search acquisition unit based on the DLNA standard. Since any device can be authenticated based on the wireless LAN standard and can be connected to the communication based on the DLNA standard, the wireless line can be connected to the wireless line as a slave unit. It is connected to the Since you call the machine and other slave unit can select the number and type of the slave unit to be connected to the master unit more freely.

  In the slave unit, the storage unit stores the identification information acquired by the search acquisition unit, and the display control unit displays a list of identification information of the master unit and other slave units stored in the storage unit on the display unit. The master unit or slave unit to be connected is selected from the identification information of the master unit and other slave units displayed on the display unit by the selection unit, and the master unit selected by the selection unit by the second call unit Alternatively, since a call is made by communication connection with the slave unit based on the DLNA standard, even if the user of the slave unit does not recognize the master unit connected to the wireless line and other slave units, the desired parent unit Can be more easily connected to the machine or the slave unit.

  Also, in the slave unit, when the update unit authenticates the slave unit newly connected to the wireless line by the authentication unit, the identification information of the slave unit is acquired from the slave unit, and the acquired slave unit is acquired. Since the storage means is updated based on the identification information of the machine, even if a new slave unit is added to the wireless line, all other slave units connected to the wireless line are displayed in a list and selected. can do.

  According to the second aspect of the present invention, in the master unit, the slave unit connected to the wireless line is authenticated based on the wireless LAN standard by the authentication unit, and the slave unit is connected to the radio line by the search acquisition unit. When searching, the master unit and other slave units connected to the wireless line are searched, the identification information of the searched master unit and other slave units is acquired, and the call acquisition unit searches for the search unit. Since a call is made by communicating with another slave unit based on the DLNA standard, any device that can be authenticated based on the wireless LAN standard and can be connected based on the DLNA standard can be used. However, since it is possible to connect as a slave unit to a wireless line and talk with other slave units connected to the wireless line, the number and types of slave units connected to the master unit can be selected more freely.

  According to the third aspect of the present invention, in the master unit, the slave unit connected to the wireless line is authenticated by the authentication unit based on the wireless LAN standard, and the slave unit connected to the wireless line by the first call unit When a call is made by communication connection with a machine based on the DLNA standard, and the slave unit is connected to the radio line by the search acquisition means, the master unit and other slave units connected to the radio line are The identification information of the retrieved master unit and other slave units is acquired, and the second call means establishes communication connection with the master unit and other slave units searched by the search acquisition unit based on the DLNA standard. Since any device can be authenticated based on the wireless LAN standard and can be connected to the communication based on the DLNA standard, the wireless line can be connected to the wireless line as a slave unit. It is connected to the Since you call the machine and other slave unit can select the number and type of the slave unit to be connected to the master unit more freely.

  According to the invention described in claim 4, the same effect as that of the invention described in claim 3 can be obtained. In particular, in the slave unit, the identification information acquired by the search acquisition means by the storage means. Is stored, the display control means displays a list of identification information of the master unit and other slave units stored in the storage unit, and the selection unit displays the master unit and other slave units displayed on the display unit. Since the base unit or handset to be connected is selected from the identification information of the mobile phone, the second call means communicates with the base unit or handset selected by the selection means based on the DLNA standard and makes a call. Even if the user of the child device does not recognize the parent device and other child devices connected to the wireless line, the user can easily connect to the desired parent device or child device.

  Hereinafter, the best mode for carrying out a call system according to the present invention will be described in detail with reference to the drawings.

  The call system 1 according to the present invention is connected to an external telephone (not shown) via a public line T, for example, as shown in FIG. Note that the number of external telephones connected to the telephone system 1 is arbitrary.

  As shown in FIG. 1, for example, the call system 1 includes a master unit 2 connected to a public line T, a slave unit 3 connected to the master unit 2 via a radio line (not shown),. It is configured with.

  As shown in FIGS. 1 and 2, for example, the base unit 2 includes a connection unit 21, a wireless communication unit 22, a receiving unit 23, a conversion unit 24, a display unit 25, an operation unit 26, a CPU (Central Processing Unit) 27, A RAM (Random Access Memory) 28, a storage unit 29, and the like are provided.

  The connection unit 21 includes, for example, an incoming call detection unit (not shown). The incoming call detection unit is configured to include, for example, an incoming call detection circuit and the like, and detects incoming calls by detecting the voltage of the line current.

  The wireless communication unit 22 includes, for example, an RF module and performs wireless communication with the slave units 3. Examples of the wireless LAN include a network conforming to the Bluetooth standard, the IEEE (Institute of Electrical and Electronic Engineers) 802.11 standard, and the Ethernet (registered trademark) standard.

  The receiver unit 23 is configured to include, for example, a speaker, a microphone, and the like. The speaker outputs sound based on an electrical signal input from the conversion unit 24, for example. For example, the microphone acquires voice uttered by the user, converts it into an electrical signal, and outputs the electrical signal to the conversion unit 24.

  The conversion unit 24 converts, for example, an electrical signal input from an external telephone (not shown) via the telephone receiver 23 or the public line into audio data such as MP3 in accordance with a control signal input from the CPU 27. Also, audio data such as MP3 input via a wireless line is converted into an electrical signal and output to the receiver 23.

  The display unit 25 includes, for example, a liquid crystal panel, and displays various operation screens, operation result screens, and the like according to control signals input from the CPU 27. In addition, the display unit 25 is controlled by the CPU 27 executing a display control program 29D described later, and displays identification information of a plurality of slave units 3,... Connected via a wireless line (not shown). Display a list.

  The operation unit 26 includes, for example, various operation keys, numeric keys, and the like, and outputs various operation signals, telephone numbers, and the like to the CPU 27 when these keys are pressed. Moreover, the operation part 26 outputs the operation signal which selects the identification information of the subunit | mobile_unit 3 connected from the identification information of the subunit | mobile_unit 3, ... displayed as a list on the display part 25 to CPU27.

  For example, the CPU 27 reads out a processing program or the like stored in the storage unit 29, develops it in the RAM 28, and executes it, thereby controlling the entire base unit 2.

  The RAM 28 expands, for example, a processing program executed by the CPU 27 in a program storage area in the RAM 28, and stores input data and a processing result generated when the processing program is executed in the data storage area.

  The storage unit 29 has, for example, a recording medium (not shown) in which programs, data, and the like are stored in advance, and this recording medium is configured by, for example, a semiconductor memory. In addition, the storage unit 29 stores various data, various processing programs, data processed by executing these programs, and the like that enable the CPU 27 to realize the function of controlling the entire parent device 2. More specifically, for example, as shown in FIG. 2, the storage unit 29 includes a list data file 29A, an authentication program 29B, an update program 29C, a display control program 29D, a browse program 29E, a communication confirmation program 29F, and a signal sound output. A program 29G, a call program 29H, and the like are stored.

  The list data file 29A stores, for example, identification information for identifying the slave units 3,... Connected to a wireless line (not shown). Here, the identification information is, for example, device information such as the model and telephone number of the slave units 3.

  The authentication program 29B is, for example, a program that causes the CPU 27 to realize a function of authenticating the slave unit 3 connected to a wireless line (not shown) based on the wireless LAN standard. More specifically, for example, when the authentication program 29B detects the slave unit 3 connected to the wireless line to the CPU 27, the authentication program 29B transmits an authentication information request signal for requesting authentication information to the slave unit 3. Then, it is determined whether or not the authentication information transmitted from the child device 3 matches the authentication information stored in the parent device 2 in advance, and only if the authentication information matches, the connection of the child device 3 to the wireless line is determined. Is a program that realizes the function of authenticating Here, the authentication information is, for example, an SSID (Service Set Identifier). The CPU 27 functions as an authentication unit by executing the authentication program 29B.

  The update program 29C detects, for example, the slave unit 3 newly connected to the wireless line in the CPU 27 and executes the authentication program 29B, thereby authenticating the slave unit 3 from the slave unit 3. This is a program for realizing the function of acquiring the identification information of the child device 3 and updating the list data file 29A based on the acquired identification information of the child device 3.

  The display control program 29D is, for example, a program that realizes a function of causing the CPU 27 to control the display unit 25 to display a list of identification information of the slave units 3,... Stored in the list data file 29A.

  The browse program 29E is, for example, a program that causes the CPU 27 to implement a browsing function based on the DLNA standard. More specifically, the browse program 29E is based on, for example, the DL27 standard for the CPU 27 targeting the slave unit 3 selected from the operation unit 26 or targeting the slave unit 3 connected to the wireless line. It is a program that realizes a function of performing browsing and acquiring a URI (Uniform Resource Indicator) of the child device 3.

  The communication confirmation program 29F is a program that, for example, causes the CPU 27 to realize a connection confirmation function using HTTP HEAD. More specifically, for example, the communication confirmation program 29F designates the URI of the child device 3 acquired by executing the browse program 29E to the CPU 27, and transmits a request signal using HTTP HEAD, for example. This is a program that realizes a function for confirming whether or not communication is possible depending on whether or not HTTP header information is returned from the machine 3.

  For example, the signal sound output program 29G is a program for causing the CPU 27 to realize a function of outputting a call waiting sound, a ringing tone, a non-calling tone, a holding tone, and the like.

The call program 29H, for example, causes the CPU 27 to control the conversion unit 24 to convert the electric signal input from the reception unit 23 into audio data such as MP3, and to control the wireless communication unit 22 to connect the audio data. This is a program for realizing a function to be transmitted to the previous slave unit 3. In addition, the call program 29H, for example, causes the CPU 27 to control the conversion unit 24 so as to convert voice data such as MP3 input via a wireless line into an electrical signal and output it to the reception unit 23. It is a program. Here, transmission / reception of audio data via a wireless line is performed using, for example, HTTP GET.
The CPU 27 functions as a first call means by executing the browse program 29E, the communication confirmation program 29F, and the call program 29H.

  The handset 3 includes, for example, a wireless communication unit 31, a receiving unit 32, a conversion unit 33, a display unit 34, an operation unit 35, a CPU 36, a RAM 37, a storage unit 38, and the like as shown in FIGS. Is done.

  The wireless communication unit 31 includes, for example, an RF module, and performs wireless communication with the parent device 2 and the other child devices 3,. Examples of the wireless LAN include a network conforming to the Bluetooth standard, the IEEE (Institute of Electrical and Electronic Engineers) 802.11 standard, and the Ethernet standard.

  The receiver 32 is configured with, for example, a speaker and a microphone. The speaker outputs sound based on an electrical signal input from the conversion unit 33, for example. For example, the microphone acquires voice uttered by the user, converts the voice into an electrical signal, and outputs the electrical signal to the conversion unit 33.

  The converter 33 converts the electrical signal input from the receiver 32 into audio data such as MP3, for example, according to the control signal input from the CPU 36. Also, audio data such as MP3 input via a wireless line is converted into an electrical signal and output to the receiver 32.

  The display unit 34 includes, for example, a liquid crystal panel and displays various operation screens, operation result screens, and the like according to control signals input from the CPU 36. The display unit 34 is controlled by the CPU 36 executing a display control program 38E to be described later, and is connected to the master unit 2 and other slave units 3,... Connected via a wireless line (not shown). Displays a list of identification information.

  The operation unit 35 includes, for example, various operation keys and numeric keys, and outputs various operation signals, telephone numbers, and the like to the CPU 36 when these keys are pressed. In addition, the operation unit 35 selects an identification information of the parent device 2 or the child device 3 to be connected from the identification information of the parent device 2 and the other child devices 3,... Displayed in the list on the display unit 34. Is output to the CPU 36 and functions as selection means.

  For example, the CPU 36 reads out a processing program or the like stored in the storage unit 38, develops it in the RAM 37, and executes it, thereby controlling the entire slave unit 3.

  For example, the RAM 37 develops a processing program executed by the CPU 36 in a program storage area in the RAM 37, and stores input data and a processing result generated when the processing program is executed in the data storage area.

  The storage unit 38 includes, for example, a recording medium (not shown) in which programs, data, and the like are stored in advance, and this recording medium is configured by, for example, a semiconductor memory. Further, the storage unit 38 stores various data, various processing programs, data processed by the execution of these programs, and the like that realize the function of the CPU 36 controlling the entire slave unit 3. More specifically, for example, as shown in FIG. 3, the storage unit 38 includes a list data file 38A, an authentication program 38B, a multicast program 38C, an update program 38D, a display control program 38E, a browse program 38F, and a communication confirmation program 38G. , A signal sound output program 38H, a call program 38I, and the like are stored.

  The list data file 38A stores, for example, identification information for identifying the parent device 2 and other child devices 3,... Connected to a wireless line (not shown). Here, the identification information is, for example, device information such as the model of the parent device 2 and the other child devices 3,. The storage unit 38 functions as a storage unit by storing the list data file 38A.

  The authentication program 38B has a function of, for example, transmitting the authentication information of the slave unit 3 to the master unit 2 and authenticating it based on the wireless LAN standard when the CPU 36 is connected to a wireless line (not shown). This is a program to be realized. More specifically, for example, when the authentication program 38B receives an authentication information request signal for requesting authentication information from the parent device 2 when the CPU 36 connects to the wireless line, the authentication device 38B sends the child device to the parent device 2. 3 is a program for realizing a function of transmitting authentication information 3. Here, the authentication information is, for example, an SSID.

  The multicast program 38C, for example, searches the CPU 36 for the parent device 2 and other child devices 3,... Connected to the wireless line when connecting to the wireless line, Is a program for realizing the function of acquiring the identification information of the slave units 3. Here, the search for the master unit 2 and the other slave units 3,... Connected to the wireless line and the acquisition of the identification information of the master unit 2 and the other slave units 3,. -Performed using SEARCH. The CPU 36 functions as a search acquisition unit by executing the multicast program 38C.

  For example, when the slave unit 3 is newly connected to the wireless line and the slave unit 3 is authenticated by the master unit 2, the update program 38 </ b> D receives the identification information of the slave unit 3 from the slave unit 3. This is a program that implements the function of acquiring and updating the list data file 38A based on the acquired identification information of the slave unit 3. The CPU 36 functions as an update unit by executing the update program 38D.

  The display control program 38E has a function of, for example, causing the CPU 36 to control the display unit 34 to display a list of identification information of the parent device 2 and the other child devices 3,... Stored in the list data file 38A. This is a program to be realized. The CPU 36 functions as a display control unit by executing the display control program 38E.

  The browse program 38F is a program that, for example, causes the CPU 36 to realize a browsing function based on the DLNA standard. More specifically, the browse program 38F performs, for example, browsing based on the DLNA standard for the parent device 2 or the child device 3 selected from the operation unit 35 to the CPU 36, and the parent device 2 or the child device 3 It is a program that realizes a function of acquiring the URI of.

  The communication confirmation program 38G is, for example, a program that causes the CPU 36 to realize a function of performing connection confirmation using HTTP HEAD. More specifically, the communication confirmation program 38G specifies, for example, the URI of the parent device 2 or other child device 3 acquired by executing the browse program 38F to the CPU 36, and a request signal using HTTP HEAD. , And a function for realizing whether or not communication is possible depending on whether or not HTTP header information is returned from the parent device 2 or another child device 3.

  For example, the signal sound output program 38H is a program that causes the CPU 36 to realize a function of outputting a call waiting sound, a ringing tone, a non-calling tone, a holding tone, and the like.

For example, the call program 38I causes the CPU 36 to control the conversion unit 33 to convert the electric signal input from the reception unit 32 into audio data such as MP3, and to control the wireless communication unit 31 to connect the audio data. This is a program for realizing a function to be transmitted to the previous master unit 2 or another slave unit 3. In addition, the call program 38I, for example, causes the CPU 36 to control the conversion unit 33 to realize a function of converting voice data such as MP3 input via a wireless line into an electrical signal and outputting it to the reception unit 32. It is a program. Here, transmission / reception of audio data via a wireless line is performed using, for example, HTTP GET.
The CPU 36 functions as a second call means by executing the browse program 38F, the communication confirmation program 38G, and the call program 38I.

Next, an example of the authentication operation in the call system 1 configured as described above will be described with reference to the flowchart shown in FIG.
First, when the master unit 2 detects the slave unit 3 newly connected to the wireless line (step S1), the CPU 27 requests authentication information from the slave unit 3 by executing the authentication program 29B. An authentication information request signal to be transmitted is transmitted (step S2).

  Next, when the handset 3 newly connected to the wireless line receives the authentication information request signal transmitted from the base unit 2 (step S3), the CPU 36 executes the authentication program 38B, whereby the base unit 2 is executed. The authentication information of the child device 3 is transmitted to (step S4).

  Next, when the parent device 2 receives the authentication information transmitted from the child device 3 (step S5), the CPU 27 obtains the authentication information transmitted from the child device 3 in advance based on the execution of the authentication program 29B. In step S6, it is determined whether or not the authentication information matches the stored authentication information.

In step S6, if the CPU 27 determines that the authentication information transmitted from the child device 3 does not match the authentication information stored in the parent device 2 in advance (step S6; No), the process is terminated.
If the CPU 27 determines in step S6 that the authentication information transmitted from the child device 3 matches the authentication information stored in advance in the parent device 2 (step S6; Yes), the CPU 27 determines that the child device 3 The connection to the wireless line is authenticated (step S7).

  Next, in the child device 3 authenticated in step S7, the CPU 36 executes the multicast program 38C to search for the parent device 2 connected to the wireless line, and for the searched parent device 2, An identification information request signal for requesting identification information of the parent device 2 is transmitted (step S8).

  Next, when the parent device 2 receives the identification information request signal from the child device 3 (step S9), the CPU 27 controls the wireless communication unit 22 to transmit the identification information of the parent device 2 to the child device 3. (Step S10).

  Next, when the child device 3 receives the identification information of the parent device 2 from the parent device 2, the CPU 36 stores the received identification information of the parent device 2 in the list data file 38A (step S11) and the multicast program 38C. Are searched for other slave units 3,... Connected to the wireless line, and the identification information of the slave unit 3 is obtained for the other slave units 3,. The requested identification information request signal is transmitted (step S12).

  Next, when the other slave units 3,... Receive the identification information request signal from the slave unit 3 (step S13), the CPU 36 of the other slave units 3,. And the identification information of the said other subunit | mobile_unit 3 is transmitted to the subunit | mobile_unit 3 (step S14).

  Next, when the child device 3 receives the identification information of the other child device 3 from the other child devices 3,..., The CPU 36 displays the received identification information of the other child devices 3,. It is stored in the file 38A (step S15).

  Next, in the base unit 2, the CPU 27 executes the update program 29C to control the wireless communication unit 22 to transmit an identification information request signal to the handset 3 authenticated in step S7 (step S7). S16).

  Next, when the child device 3 receives the identification information request signal from the parent device 2 (step S17), the CPU 36 controls the wireless communication unit 31 to transmit the identification information of the child device 3 to the parent device 2 ( Step S18).

  Next, when the parent device 2 receives the identification information of the child device 3 from the child device 3, the CPU 27 executes a list data file based on the received identification information of the child device 3 based on the execution of the update program 29C. 29A is updated (step S19).

  Next, in the other slave units 3,..., The CPU 36 executes the update program 38D, thereby controlling the wireless communication unit 31 and requesting the identification information to the slave unit 3 authenticated in step S7. A signal is transmitted (step S20).

  Next, when the slave unit 3 receives the identification information request signal from the other slave units 3,... (Step S21), the CPU 36 controls the wireless communication unit 31 to change the identification information of the slave unit 3 to the other. Are transmitted to the slave units 3,... (Step S22).

  Next, when the other child devices 3,... Receive the identification information of the child device 3 from the child device 3, the CPU 36 adds the received identification information of the child device 3 to the received identification information of the child device 3 based on the execution of the update program 38D. Based on this, the list data file 38A is updated (step S23).

Next, referring to the flowchart shown in FIG. 5 for an example of a call start operation between the first handset 3 and the second handset 3 when the second handset 3 can talk in the call system 1 according to the present embodiment. While explaining.
First, in the first handset 3, when the CPU 36 executes the display control program 38E, identification information between the base unit 2 connected to the wireless line and the other handset 3, ... is displayed on the display unit 34. The identification information of the connected child device 3 (second child device 3) from the identification information of the parent device 2 and the other child devices 3,... Displayed in a list from the operation unit 35 and displayed on the display unit 34 as a list. When the operation signal for selecting is output (step S101), the CPU 36 executes the browse program 38F to control the wireless communication unit 31 to generate a browse signal for searching for the selected second slave unit 3. Transmit (step S102).

  Next, when the second handset 3 receives the browse signal transmitted from the first handset 3 (step S103), the CPU 36 of the second handset 3 controls the wireless communication unit 31 to perform the second operation. The URI of the handset 3 is transmitted to the first handset 3 (step S104).

  Next, the first slave unit 3 receives the URI transmitted from the second slave unit 3 (step S105).

  Next, the CPU 36 of the second slave unit 3 controls the wireless communication unit 31 by executing the browse program 38F, and transmits a browse signal for searching for the first slave unit 3 (step S106).

  Next, when the first handset 3 receives the browse signal transmitted from the second handset 3 (step S107), the CPU 36 of the first handset 3 controls the wireless communication unit 31 to control the first handset 3. The URI of the handset 3 is transmitted to the second handset 3 (step S108).

  Next, the second handset 3 receives the URI transmitted from the first handset 3 (step S109).

  Next, the CPU 36 of the second slave unit 3 executes the communication confirmation program 38G to control the wireless communication unit 31 to designate the URI of the first slave unit 3 and to request the request signal using HTTP HEAD. Is transmitted, and whether or not communication is possible is confirmed based on whether or not HTTP header information is returned from the first handset 3 (step S110).

  Similarly, the CPU 36 of the first slave unit 3 executes the communication confirmation program 38G, thereby controlling the wireless communication unit 31 to specify the URI of the second slave unit 3 and request signal using HTTP HEAD. Is transmitted, and whether or not communication is possible is confirmed based on whether or not HTTP header information is returned from the second slave unit 3 (step S111).

  Next, the CPU 36 of the first handset 3 outputs a call waiting sound by executing the signal sound output program 38H (step S112).

  Next, the CPU 36 of the first handset 3 executes the call program 38I to control the wireless communication unit 31, specify the URI of the second handset 3, and request voice data using HTTP GET. A signal is transmitted (step S113).

  Next, when the second handset 3 receives the audio data request signal transmitted from the first handset 3 (step S114), the CPU 36 of the second handset 3 executes the signal sound output program 38H. The ring tone is output (step S115).

  Next, the CPU 36 of the second handset 3 executes the call program 38I to control the wireless communication unit 31, specify the URI of the first handset 3, and request voice data using HTTP GET. A signal is transmitted (step S116).

  Next, when the first handset 3 receives the voice data request signal transmitted from the second handset 3 (step S117), the CPU 36 of the first handset 3 receives an incoming call based on the execution of the call program 38I. The electric signal input from the unit 32 is converted into audio data such as MP3, and the radio communication unit 31 is controlled to transmit the audio data as a response signal to the second slave unit 3 (step S118).

  Next, the second handset 3 receives voice data as a response signal from the first handset 3 (step S119), and when the user presses a call button (not shown) of the operation unit 35 (step S119). S120) Based on the execution of the call program 38I, the CPU 36 of the second handset 3 converts the electrical signal input from the receiver 32 into audio data such as MP3, and controls the radio communication unit 31 to control the audio. Data is transmitted as a response signal to the first slave unit 3 (step S121).

  Next, when the first handset 3 receives voice data as a response signal from the second handset 3 (step S122), a call is started between the first handset 3 and the second handset 3. (Step S123, Step S124).

Next, referring to the flowchart shown in FIG. 6 for an example of a call start operation between the first handset 3 and the second handset 3 when the second handset 3 rejects the incoming call in the call system 1 according to the present embodiment. While explaining.
The processing from step S201 to step S219 is the same as the processing from step S101 to step S119 in the flowchart shown in FIG.

  When the user presses a disconnect button (not shown) of the operation unit 35 (step S220), the CPU 36 of the second slave unit 3 controls the wireless communication unit 31 based on the execution of the call program 38I to generate an error signal. Is transmitted to the first slave unit 3 (step S221).

  Next, when the first handset 3 receives an error signal from the second handset 3 (step S222), the CPU 36 of the first handset 3 executes the signal sound output program 38H, so that no sound is interrupted. Output (step S223), the process is terminated.

Next, a flowchart shown in FIG. 7 is an example of a call start operation between the first handset 3 and the second handset 3 when the second handset 3 cannot receive an incoming call or the like in the call system 1 according to the present embodiment. The description will be given with reference.
Note that the processing from step S301 to step S303 is the same as the processing from step S101 to step S103 in the flowchart shown in FIG.

  The CPU 36 of the second slave unit 3 controls the wireless communication unit 31 to transmit an empty response signal to the first slave unit 3 (step S304).

  Next, when the first handset 3 receives an empty response signal transmitted from the second handset 3 (step S305), the CPU 36 of the first handset 3 executes the signal sound output program 38H. Then, a non-sounding sound is output (step S306), and this process is terminated.

Next, referring to a flowchart shown in FIG. 8, an example of a call start operation between the parent device 2 and the child device 3 that has received an incoming call when the child device 3 can make a call in the call system 1 according to the present embodiment. explain.
First, when the base unit 2 receives an incoming call via the public line T (step S401), the CPU 27 controls the wireless communication unit 22 by executing the browse program 29E, so that everything connected to the wireless line is connected. A browse signal for searching for the slave unit 3 is transmitted (step S402).

  Next, when one slave unit 3 connected to the wireless line receives the browse signal transmitted from the master unit 2 (step S403), the CPU 36 of the slave unit 3 controls the wireless communication unit 31, The URI of the child device 3 is transmitted to the parent device 2 (step S404).

  Next, base unit 2 receives the URI transmitted from handset 3 (step S405).

  Next, the CPU 36 of the child device 3 controls the wireless communication unit 31 by executing the browse program 38F, and transmits a browse signal for searching for the parent device 2 (step S406).

  Next, when the parent device 2 receives the browse signal transmitted from the child device 3 (step S407), the CPU 27 of the parent device 2 controls the wireless communication unit 22 to set the URI of the parent device 2 as the child device. 3 (step S408).

  Next, the subunit | mobile_unit 3 receives URI transmitted from the main | base station 2 (step S409).

  Next, the CPU 36 of the child device 3 controls the wireless communication unit 31 by executing the communication confirmation program 38G, designates the URI of the parent device 2, transmits a request signal using HTTP HEAD, Whether or not communication is possible is confirmed based on whether or not HTTP header information is returned from the parent device 2 (step S410).

  Similarly, the CPU 27 of the parent device 2 controls the wireless communication unit 22 by executing the communication confirmation program 29F, designates the URI of the child device 3, and transmits a request signal using HTTP HEAD, Whether or not communication is possible is confirmed based on whether or not HTTP header information is returned from the slave unit 3 (step S411).

  Next, the CPU 27 of the parent device 2 controls the wireless communication unit 22 by executing the call program 29H, specifies the URI of the child device 3, and transmits a voice data request signal using HTTP GET. (Step S412).

  Next, when the handset 3 receives the voice data request signal transmitted from the base unit 2 (step S413), the CPU 36 of the handset 3 outputs a ring tone by executing the signal sound output program 38H. (Step S414).

  Next, the CPU 36 of the child device 3 controls the wireless communication unit 31 by executing the call program 38I, designates the URI of the parent device 2, and transmits a voice data request signal using HTTP GET. (Step S415).

  Next, when the parent device 2 receives the voice data request signal transmitted from the child device 3 (step S416), the CPU 27 of the parent device 2 is input from the receiver 23 based on the execution of the call program 29H. The electrical signal is converted into audio data such as MP3, and the wireless communication unit 22 is controlled to transmit the audio data as a response signal to the slave unit 3 (step S417).

  Next, the handset 3 receives voice data as a response signal from the base unit 2 (step S418), and when the user presses a call button (not shown) of the operation unit 35 (step S419), the handset 3 Based on the execution of the call program 38I, the CPU 36 of the machine 3 converts the electrical signal input from the receiver 32 into audio data such as MP3, and controls the wireless communication unit 31 to use the audio data as a response signal. Transmit to the machine 2 (step S420).

  Next, when the parent device 2 receives voice data as a response signal from the child device 3 (step S421), a call is started between the parent device 2 and the child device 3 (step S422, step S423). .

Next, an example of a call start operation between the master unit 2 and the slave unit 3 when the slave unit 3 rejects an incoming call in the call system 1 according to the present embodiment will be described with reference to the flowchart shown in FIG.
The processing from step S501 to step S518 is the same as the processing from step S401 to step S418 in the flowchart shown in FIG.

  When the user presses a disconnect button (not shown) of the operation unit 35 of the child device 3 (step S519), the CPU 36 of the child device 3 controls the wireless communication unit 31 based on the execution of the call program 38I. An error signal is transmitted to the parent device 2 (step S520).

  Next, when the parent device 2 receives an error signal from the child device 3 (step S521), the parent device 2 enters a state of waiting for a response from another child device 3 (step S522), and ends this process.

Next, the master unit 2 and the slave unit 3 when the master unit 2 receives an incoming response from another slave unit 3 during the connection operation between the master unit 2 and the slave unit 3 in the call system 1 according to the present embodiment. An example of the call start operation will be described with reference to the flowchart shown in FIG.
The processing from step S601 to step S618 is the same as the processing from step S401 to step S418 in the flowchart shown in FIG.

  Next, when the base unit 2 receives an incoming call response from another mobile unit 3 connected to the wireless line (step S619), the CPU 27 of the base unit 2 activates the wireless communication unit 22 based on the execution of the call program 29H. Control to transmit a disconnection signal to one slave unit 3, disconnect the connection with the one slave unit 3 (step S 620), and call with another slave unit 3 that has received an incoming call response at step S 619. Is started (step S621).

  Next, when the one slave unit 3 receives the disconnection signal transmitted from the master unit 2, the CPU 36 of the one slave unit 3 stops the output of the ringtone (step S622) and ends this process.

Next, refer to the flowchart shown in FIG. 11 for an example of a call start operation when an external telephone (not shown) connected to the base unit 2 and the public line T in the call system 1 according to the present embodiment can make a call. While explaining.
First, in the slave unit 3, when the CPU 36 executes the display control program 38E, the display unit 34 displays a list of identification information of the master unit 2 and the other slave units 3,. Then, from the operation unit 35, an operation signal for selecting the identification information of the parent device 2 to be connected is output from the identification information of the parent device 2 and the other child devices 3,. At the same time, when the telephone number of an external telephone (not shown) connected to the base unit 2 via the public line T is input (step S701), the CPU 36 executes wireless communication by executing the browse program 38F. The unit 31 is controlled to transmit a browse signal for searching for the selected parent device 2 (step S702).

  Next, when the parent device 2 receives the browse signal transmitted from the child device 3 (step S703), the CPU 27 of the parent device 2 controls the wireless communication unit 22 to set the URI of the parent device 2 as the child device. 3 (step S704).

  Next, the subunit | mobile_unit 3 receives URI transmitted from the main | base station 2 (step S705).

  Next, the CPU 27 of the parent device 2 controls the wireless communication unit 22 by executing the browse program 29E, and transmits a browse signal for searching for the child device 3 (step S706).

  Next, when the handset 3 receives the browse signal transmitted from the base unit 2 (step S707), the CPU 36 of the handset 3 controls the wireless communication unit 31 to set the URI of the handset 3 to the base unit. 2 (step S708).

  Next, the parent device 2 receives the URI transmitted from the child device 3 (step S709).

  Next, the CPU 27 of the parent device 2 controls the wireless communication unit 22 by executing the communication confirmation program 29F, designates the URI of the child device 3, and transmits a request signal using HTTP HEAD, Whether or not communication is possible is confirmed based on whether or not HTTP header information is returned from the slave unit 3 (step S710).

  Similarly, the CPU 36 of the child device 3 controls the wireless communication unit 31 by executing the communication confirmation program 38G, specifies the URI of the parent device 2, and transmits a request signal using HTTP HEAD. Whether or not communication is possible is confirmed based on whether or not HTTP header information is returned from the parent device 2 (step S711).

  Next, the CPU 36 of the child device 3 outputs a call waiting sound by executing the signal sound output program 38H (step S712).

  Next, the CPU 36 of the child device 3 executes the call program 38I to control the wireless communication unit 31 to specify the URI of the parent device 2, and to perform the voice data request signal using HTTP GET and step S701. The telephone number input in step S713 is transmitted (step S713).

  Next, when the parent device 2 receives the voice data request signal and the telephone number transmitted from the child device 3 (step S714), the CPU 27 of the parent device 2 makes a call to the telephone number (step S715).

  Next, the CPU 27 of the parent device 2 controls the wireless communication unit 22 by executing the call program 29H, specifies the URI of the child device 3, and transmits a voice data request signal using HTTP GET. (Step S716).

  Next, when handset 3 receives the voice data request signal transmitted from base 2 (step S717), CPU 36 of handset 3 is input from receiver 32 based on the execution of call program 38I. The electrical signal is converted into audio data such as MP3, and the wireless communication unit 31 is controlled to transmit the audio data as a response signal to the parent device 2 (step S718).

  Next, base unit 2 receives voice data as a response signal from handset 3 (step S719), and when a telephone call is received by an external telephone (not shown) (step S720), CPU 27 of base unit 2 Converts the electrical signal transmitted from the external telephone through the public line T into voice data such as MP3 based on the execution of the call program 29H, and controls the wireless communication unit 22 to use the voice data as a response signal. It transmits to the subunit | mobile_unit 3 (step S721).

  Next, when the handset 3 receives voice data as a response signal from the base unit 2 (step S722), a call is started between the handset 3 and the external telephone via the base unit 2 ( Step S723, Step S724).

Next, an example of a call start operation when an external telephone connected to the base unit 2 via the public line T in the call system 1 according to the present embodiment rejects an incoming call will be described with reference to the flowchart shown in FIG. To do.
Note that the processing from step S801 to step S819 is the same as the processing from step S701 to step S719 in the flowchart shown in FIG.

  When the base unit 2 receives a call impossible notification signal via the public line T due to the reason that the telephone number is wrong (step S820), the CPU 27 of the base unit 2 performs the call program 29H based on the execution of the call program 29H. The wireless communication unit 22 is controlled to transmit an error signal to the handset 3 (step S821).

  Next, when the handset 3 receives an error signal from the base unit 2 (step S822), the CPU 36 of the handset 3 executes a signal sound output program 38H to output a non-sound (step S823). This process is terminated.

Next, a flowchart shown in FIG. 13 is an example of a call start operation when an external telephone (not shown) connected to the base unit 2 via the public line T in the call system 1 according to the present embodiment cannot receive a call during a call or the like. Will be described with reference to FIG.
Note that the processing from step S901 to step S903 is the same as the processing from step S701 to step S703 in the flowchart shown in FIG.

  The CPU 27 of the parent device 2 controls the wireless communication unit 22 to transmit an empty response signal to the child device 3 (step S904).

  Next, when the handset 3 receives an empty response signal transmitted from the base unit 2 (step S905), the CPU 36 of the handset 3 outputs a dead sound by executing the signal sound output program 38H. (Step S906), the process is terminated.

Next, in the call system 1 according to the present embodiment, when the second handset 3 can make a call, a call between the external handset (not shown) via the base unit 2 and the first handset 3 is made to the second handset 3. An example of the transfer operation for transferring to the machine 3 will be described with reference to FIG.
First, when the CPU 36 of the first handset 3 in communication with the external telephone via the base unit 2 executes the display control program 38E, the base unit 2 connected to the wireless line and the like are displayed on the display unit 34. The identification information of the child devices 3,... Is displayed in a list, and from the operation unit 35, the identification information of the parent device 2 and the other child devices 3,. When an operation signal for selecting identification information of a certain handset 3 (second handset 3) is output (step S1001), the CPU 36 controls the wireless communication unit 31 based on the execution of the call program 38I, The base unit 2 is caused to transmit a disconnection signal, and the connection with the base unit 2 is disconnected (step S1002).

  Next, when the base unit 2 receives the disconnection signal transmitted from the first handset 3, the CPU 27 outputs a hold sound to the external telephone by executing the signal sound output program 29G (step S1003).

  Next, the CPU 36 of the first slave unit 3 controls the wireless communication unit 31 by executing the browse program 38F to transmit a browse signal for searching for the second slave unit 3 selected in step S1001 ( Step S1004).

  Next, when the second handset 3 receives the browse signal transmitted from the first handset 3 (step S1005), the CPU 36 of the second handset 3 controls the wireless communication unit 31 to perform the second operation. The URI of the handset 3 is transmitted to the first handset 3 (step S1006).

  Next, when the first handset 3 receives the URI transmitted from the second handset 3 (step S1007), the CPU 36 of the first handset 3 executes the call program 38I, whereby the wireless communication unit 31 is executed. To designate the second slave unit 3 and transmit a Post request signal using HTTP POST (step S1008).

  Next, the second slave unit 3 receives the Post request signal transmitted from the first slave unit 3 (step S1009).

  Next, the CPU 36 of the first handset 3 executes the call program 38I to control the wireless communication unit 31 to designate the base unit 2 and transmit a Post request signal using HTTP POST ( Step S1010).

  Next, the master unit 2 receives the Post request signal transmitted from the first slave unit 3 (step S1011).

  Next, based on the reception of the Post request signal in step S1009, the CPU 36 of the second handset 3 executes the call program 38I to convert the electric signal input from the receiver 32 into audio data such as MP3. The wireless communication unit 31 is controlled to transmit the audio data to the parent device 2 (step S1012).

  Next, when base unit 2 receives the audio data transmitted from second handset 3 (step S1013), CPU 27 of base unit 2 executes call program 29H based on the reception of the post request signal in step S1011. By executing this, an electric signal input from an external telephone via a public line is converted into audio data such as MP3, and the radio communication unit 22 is controlled to transmit the audio data to the second slave unit 3 ( Step S1014), the output of the hold tone to the external telephone is stopped (Step S1015).

  Next, the second handset 3 receives the voice data transmitted from the base unit 2 (step S1016), and a call between the external telephone and the second handset 3 is started via the base unit 2 (step S1016). S1017).

Next, in the call system 1 according to the present embodiment, when the second handset 3 is unable to make a call, the second handset 3 makes a call between the external handset (not shown) and the first handset 3 via the second handset 2. An example of a transfer operation for transferring to the child device 3 will be described with reference to FIG.
Note that the processing from step S1101 to step S1105 is the same as the processing from step S1001 to step S1005 in the flowchart shown in FIG.

  The CPU 36 of the second slave unit 3 controls the wireless communication unit 31 to transmit an empty response signal to the first slave unit 3 (step S1106).

  Next, when the first slave unit 3 receives an empty response signal transmitted from the second slave unit 3 (step S1107), the CPU 36 of the first slave unit 3 indicates that transfer to the display unit 34 is impossible. A predetermined display is displayed (step S1108), and by executing the call program 38I, the radio communication unit 31 is controlled, the URI of the base unit 2 is specified, and the voice data request signal using HTTP GET is designated. Is transmitted (step S1109).

  Next, when the base unit 2 receives the voice data request signal transmitted from the first handset 3 (step S1110), the CPU 27 of the base unit 2 executes the call program 29H to input from the receiver unit 23. The converted electrical signal is converted into audio data such as MP3, and the wireless communication unit 22 is controlled to transmit the audio data to the first slave unit 3 as a response signal (step S1111).

  Next, the first slave unit 3 receives audio data as a response signal from the master unit 2 (step S1112).

  Next, the CPU 27 of the base unit 2 controls the wireless communication unit 22 based on the execution of the call program 29H, specifies the URI of the first handset 3, and outputs a voice data request signal using HTTP GET. Transmit (step S1113).

  Next, when the first handset 3 receives the voice data request signal transmitted from the base unit 2 (step S1114), the CPU 36 of the first handset 3 receives the receiving unit 32 based on the execution of the call program 38I. Is converted into audio data such as MP3, and the wireless communication unit 31 is controlled to transmit the audio data as a response signal to the base unit 2 (step S1115).

  Next, when the base unit 2 receives the voice data as a response signal transmitted from the first handset 3 (step S1116), the CPU 27 of the base unit 2 stops outputting the hold sound to the external telephone ( In step S1117), the call between the external telephone and the first handset 3 is resumed via the base unit 2 (steps S1118 and S1119).

  According to the call system 1 according to the present invention described above, in the parent device 2, the CPU 27 executes the authentication program 29B, whereby the child device 3 connected to the wireless line is authenticated based on the wireless LAN standard. When the CPU 27 executes the call program 29H, a call is made by communication connection with the slave unit 3 connected to the wireless line based on the DLNA standard. In the slave unit 3, the CPU 36 executes the multicast program 38C. Thus, when connecting to the wireless line, the master unit 2 and the other slave units 3,... Connected to the radio line are retrieved, and the retrieved master unit 2 and the other slave units 3,. Is acquired, and when the CPU 36 executes the call program 38I, the master unit searched by executing the multicast program 38C And other slave units 3,..., A communication connection is made based on the DLNA standard, so that a call can be made by a device that can be authenticated based on the wireless LAN standard and can be connected based on the DLNA standard. If there is anything, it can be connected to the base unit 2 because it can be connected to the wireless line as the handset 3 and can communicate with the base unit 2 and the other handset 3 connected to the wireless line. The number and type of the slave units 3 can be selected more freely.

  Further, in the slave unit 3, identification information acquired by the CPU 36 executing the multicast program 38C is stored by the list data file 38A, and stored in the list data file 38A by the CPU 36 executing the display control program 38E. The identification information of the master unit 2 and the other slave units 3,... Displayed in a list is displayed on the display unit 34, and the master unit 2 and the other slave units 3,. The parent device 2 or the child device 3 to be connected is selected from the identification information, and the CPU 36 executes the call program 38I, so that the parent device 2 or the child device 3 selected by the operation unit 35 and the DLNA standard are selected. Since the communication is performed based on the communication, the user of the slave unit 3 recognizes the master unit 2 and the other slave units 3,. Without having, it can be more easily connected to the main terminal 2 or sub-terminal 3 that desired.

  Further, in the slave unit 3, when the CPU 36 executes the update program 38D and the CPU 27 of the master unit 2 executes the authentication program 29B, the slave unit 3 newly connected to the wireless line is authenticated. Since the identification information of the child device 3 is acquired from the child device 3 and the list data file 38A is updated based on the acquired identification information of the child device 3, the child device 3 is newly added to the wireless line. Even when added, it is possible to select and display a list of all the other slave units 3,... Connected to the wireless line.

  In this embodiment, the base unit 2 is configured to function as a fixed telephone connected to the public line. However, a separate fixed telephone is provided, and the fixed telephone is connected to the public line via the main unit 2. You may comprise.

It is a figure which shows an example of schematic structure of the telephone call system which concerns on this invention. It is a block diagram which shows an example of a structure of the main | base station which concerns on this invention. It is a block diagram which shows an example of a structure of the subunit | mobile_unit which concerns on this invention. It is a flowchart explaining an example of the authentication operation | movement in the telephone system which concerns on this invention. It is a flowchart explaining an example of the telephone call start operation | movement between the subunit | mobile_unit in the telephone call system which concerns on this invention. It is a flowchart explaining an example of the telephone call start operation | movement between the subunit | mobile_unit in the telephone call system which concerns on this invention. It is a flowchart explaining an example of the telephone call start operation | movement between the subunit | mobile_unit in the telephone call system which concerns on this invention. It is a flowchart explaining an example of the telephone call start operation | movement with the external telephone and a subunit | mobile_unit via the main | base station in the telephone call system which concerns on this invention. It is a flowchart explaining an example of the telephone call start operation | movement with the external telephone and a subunit | mobile_unit via the main | base station in the telephone call system which concerns on this invention. It is a flowchart explaining an example of the telephone call start operation | movement with the external telephone and a subunit | mobile_unit via the main | base station in the telephone call system which concerns on this invention. It is a flowchart explaining an example of the telephone call start operation | movement when the subunit | mobile_unit in the telephone system which concerns on this invention makes a telephone call to an external telephone via a parent | base station. It is a flowchart explaining an example of the telephone call start operation | movement when the subunit | mobile_unit in the telephone system which concerns on this invention makes a telephone call to an external telephone via a parent | base station. It is a flowchart explaining an example of the telephone call start operation | movement when the subunit | mobile_unit in the telephone system which concerns on this invention makes a telephone call to an external telephone via a parent | base station. It is a flowchart explaining an example of the transfer operation | movement at the time of transferring the telephone call of the external telephone and a subunit | mobile_unit via a main | base station in another telephone system which concerns on this invention to another subunit | mobile_unit. It is a flowchart explaining an example of the transfer operation | movement at the time of transferring the telephone call of the external telephone and a subunit | mobile_unit via a main | base station in another telephone system which concerns on this invention to another subunit | mobile_unit.

Explanation of symbols

1 Call system 2 Master unit 27 CPU (authentication means, first call means)
29B authentication program (authentication means)
29E Browse program (first call means)
29F Communication confirmation program (first calling means)
29H call program (first call means)
3 Child machine 34 Display part 35 Operation part (selection means)
36 CPU (search acquisition means, update means, display control means, second call means)
38 storage unit (storage means)
38A List data file (storage means)
38C Multicast program (search and acquisition means)
38D update program (update means)
38E Display control program (display control means)
38F Browse program (second call means)
38G communication confirmation program (second call means)
38I call program (second call means)
T Public line

Claims (4)

In a call system configured to include a parent device connected to a public line and a child device connected to the parent device via a wireless line,
The base unit is
Authentication means for authenticating the slave connected to the wireless line based on a wireless LAN standard;
A first call means for making a call by communication connection based on the DLNA standard, and a handset connected to the wireless line;
With
The slave is
Retrieval acquisition means for searching the master unit and other slave units connected to the radio line and acquiring identification information of the searched master unit and other slave units when connecting to the radio line When,
Storage means for storing identification information of the master unit and other slave units acquired by the search acquisition unit;
Display control means for displaying a list of identification information of the master unit and other slave units stored in the storage unit on a display unit;
A selection means for selecting a parent device or a child device to be connected from among the identification information of the parent device and other child devices displayed on the display unit;
A second call means for making a call by communication connection based on the DLNA standard with the parent device or the child device selected by the selection means;
When the slave unit newly connected to the wireless line is authenticated by the authentication means, the identification information of the slave unit is acquired from the slave unit, based on the acquired identification information of the slave unit, Updating means for updating the storage means;
A call system comprising: In a call system configured to include a parent device connected to a public line and a child device connected to the parent device via a wireless line,
The base unit is
Comprising authentication means for authenticating the slave connected to the wireless line based on a wireless LAN standard;
The slave is
Retrieval acquisition means for searching the master unit and other slave units connected to the radio line and acquiring identification information of the searched master unit and other slave units when connecting to the radio line When,
Call means for making a call by communication connection based on the DLNA standard with the other slave units searched by the search acquisition means;
A call system comprising: In a call system configured to include a parent device connected to a public line and a child device connected to the parent device via a wireless line,
The base unit is
Authentication means for authenticating the slave connected to the wireless line based on a wireless LAN standard;
A first call means for making a call by communication connection based on the DLNA standard, and a handset connected to the wireless line;
With
The slave is
Retrieval acquisition means for searching the master unit and other slave units connected to the radio line and acquiring identification information of the searched master unit and other slave units when connecting to the radio line When,
Second call means for making a call by communication connection based on the DLNA standard with the master unit and other slave units searched by the search acquisition unit;
A call system comprising: The slave is
Storage means for storing identification information acquired by the search acquisition means;
Display control means for displaying a list of identification information of the master unit and other slave units stored in the storage unit on a display unit;
A selection means for selecting a parent device or a child device to be connected from among the identification information of the parent device and other child devices displayed on the display unit;
With
4. The call system according to claim 3, wherein the second call unit makes a call by performing communication connection with a master unit or a slave unit selected by the selection unit based on a DLNA standard. 5.

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