JP5239879B2 - Communication terminal, main apparatus, and parent-child telephone system construction method - Google Patents

Communication terminal, main apparatus, and parent-child telephone system construction method Download PDF

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JP5239879B2
JP5239879B2 JP2009002179A JP2009002179A JP5239879B2 JP 5239879 B2 JP5239879 B2 JP 5239879B2 JP 2009002179 A JP2009002179 A JP 2009002179A JP 2009002179 A JP2009002179 A JP 2009002179A JP 5239879 B2 JP5239879 B2 JP 5239879B2
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unit
parent
information
mobile phone
child
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JP2010161605A (en
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章彦 押之見
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株式会社ナカヨ通信機
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Description

  The present invention relates to a technology for constructing a parent-child telephone system using a communication terminal having a wireless function.

  Patent Document 1 discloses an extension telephone system in which a LAN gateway that transmits and receives voice data using IP packets communicates with terminals in accordance with the Bluetooth standard to perform communication between terminals. In this extension telephone system, the gateway performs voice data communication on the LAN by mutually converting voice data that can be communicated with the Bluetooth standard and IP packets that can be communicated on the LAN. The terminal performs a voice call with the terminal of the other party via the nearest gateway and LAN.

  Patent Document 2 discloses a mobile phone system that enables one mobile phone number to be shared by a plurality of mobile phone terminals owned by different users. In this cellular phone system, a number management server, a call control server, and a gateway for protocol conversion between the local network and the public network are installed for interworking between the local network and the public network. When a call arrives at the gateway from the public network, the number management server specifies one extension telephone terminal as a destination terminal from the call history and usage status of the mobile phone number designated as the destination number. The call control server receives a call by extension call if the destination terminal is on the premises, and transfers the call to the mobile phone number assigned to the destination terminal if the destination terminal is outside the premises.

JP 2004-104531 A JP 2008-219258 A

  For example, when it is desired to communicate a message to a member (another member) of a group that is working outdoors, the radio wave environment around the other member may be poor, and the mobile phone terminal of the other member may not be connected. In this case, usually, another member who knows the mobile phone number is called again and the other member takes the call, but this is troublesome. Also, if any member is not near the other member, the other member cannot be called. Furthermore, even if the partner member can succeed, the mobile phone terminal is lent and borrowed, which is not preferable for hygiene purposes. The techniques described in Patent Documents 1 and 2 do not consider these points.

  This invention is made | formed in view of the said situation, and the objective of this invention is providing the technique which can make a communication terminal connect more easily.

  In order to solve the above problems, in the present invention, a parent-child telephone system is constructed using a plurality of communication terminals having a wireless communication function. A communication terminal having the best radio wave environment of the first wireless network (for example, a wide area wireless communication network such as a mobile phone network) is the parent device. The master unit accommodates each other communication terminal as a slave unit via a second wireless network (for example, a narrow-area wireless communication network such as a wireless LAN), and connects these slave units to the first wireless network.

For example, the present invention is a communication terminal having a wireless communication function,
A first interface means for connecting to a first wireless network;
A second interface means for connecting to a second wireless network;
Another communication terminal connected to the second wireless network is accommodated as a slave unit via the second interface unit, and the slave unit is accommodated in the first wireless network via the first interface unit. A master mode processing means for connecting the machine,
A child connected via the second interface means to another communication terminal operating as a parent device connected to the second wireless network, and connected to the first wireless network via the parent device Machine mode processing means;
Mode selection means for activating any one of the parent device mode processing means and the child device mode processing means;
Radio wave intensity detecting means for detecting the radio wave intensity of the first wireless network;
A radio field intensity notification transmitting unit configured to transmit a notification of the radio field intensity detected by the radio field intensity detection unit to each of the other communication terminals connected to the second wireless network via the second interface unit; ,
Telephone strength notification receiving means for receiving a notification of radio field strength from each of the other communication terminals connected to the second wireless network via the second interface means,
The mode selection means includes
When the radio field intensity detected by the radio field intensity detection unit is greater than any radio field intensity received by the telephone strength notification reception unit from each of the other communication terminals, the master unit mode processing unit is activated; In this case, the slave unit mode processing means is activated.

  ADVANTAGE OF THE INVENTION According to this invention, the parent-child telephone system by a some communication terminal can be constructed | assembled by setting the communication terminal with the best radio wave environment of a 1st wireless network as a main | base station, Thereby, the radio wave environment of a 1st wireless network It is possible to realize a good call between the communication terminal having poor communication and the first wireless network.

FIG. 1 is a schematic diagram of a parent-child phone system according to a first embodiment of the present invention. FIG. 2 is a schematic configuration diagram of the mobile phone terminal 1 shown in FIG. FIG. 3 is a flowchart for explaining the operation of the mobile phone terminal 1 shown in FIG. FIG. 4 is a flowchart for explaining S12 (parent-child phone system construction processing A) in FIG. FIG. 5A is a flowchart for explaining S14 (parent-child phone system construction process B) in FIG. 3, and FIG. 5B shows S16 (parent-child phone system reconstruction process A) in FIG. It is a flowchart for demonstrating. 6A is a flowchart for explaining S18 (parent-child phone system reconstruction process B) in FIG. 3, and FIG. 6B explains S20 (parent-child phone system cancellation process) in FIG. FIG. FIG. 7 is a sequence diagram for explaining the operation when the parent-child phone system according to the first embodiment of the present invention is constructed. FIG. 8 is a sequence diagram for explaining the operation when a handset is added to the parent-child phone system according to the first embodiment of the present invention. FIG. 9 is a sequence diagram for explaining the operation when there is an incoming call in the parent-child phone system according to the first embodiment of the present invention. FIG. 10 is a schematic diagram of the extension telephone system according to the second embodiment of the present invention. FIG. 11 is a schematic configuration diagram of the mobile phone terminal 1A shown in FIG. FIG. 12 is a schematic configuration diagram of the telephone control device 5 shown in FIG. FIG. 13 is a diagram schematically showing the registered contents of the extension terminal information storage unit 55. FIG. 14 is a flowchart for explaining the operation of the telephone control device 5 shown in FIG. FIG. 15 is a sequence diagram for explaining an operation when a parent-child phone system is constructed and each mobile phone terminal 1A is accommodated in the telephone control device 5 as an extension terminal in the second embodiment of the present invention. . FIG. 16 is a sequence diagram for explaining the operation when a slave unit is added to the master-slave telephone system and this slave unit is accommodated in the telephone control device 5 as an extension terminal in the second embodiment of the present invention. is there. FIG. 17 is a sequence diagram for explaining the operation when there is an incoming call in the extension telephone system according to the second embodiment of the present invention.

  Embodiments of the present invention will be described below.

[First embodiment]
FIG. 1 is a schematic diagram of a parent-child phone system according to a first embodiment of the present invention.

  As shown in the figure, in the parent-child phone system according to the present embodiment, a plurality of mobile phone terminals 1-1 to 1-4 (hereinafter also simply referred to as mobile phone terminals 1) are connected to each other by wireless LAN 3 ad hoc communication. It is configured.

  Among the plurality of mobile phone terminals 1-1 to 1-4, the mobile phone terminal (in this case, the mobile phone terminal 1-1) having the best radio wave environment of the mobile phone network 2 is the parent device. Base unit 1-1 accommodates other mobile phone terminals 1-2 to 1-4 as slave units via wireless LAN 3, and connects these slave units 1-2 to 1-4 to mobile phone network 2. The master unit 1-1 not only performs relaying between the slave units 1-2 to 1-4 and the mobile phone network 2, but also performs extension calls and hold / transfer between the slave units 1-2 to 1-4. Control. A plurality of mobile phone numbers are assigned to the mobile phone terminal 1 by the mobile phone network 2, and one of them is a mobile phone number common to all mobile phone terminals 1. This common mobile phone number is used as a representative number of the parent-child phone system.

  FIG. 2 is a schematic configuration diagram of the mobile phone terminal 1 shown in FIG.

  As shown, the mobile phone terminal 1 includes a wireless LAN interface unit 11, a mobile phone network interface unit 12, a user interface unit 13, a mobile phone function unit 14, a handset mode processing unit 15, and a parent device mode. A processing unit 16 and a main control unit 17 are included.

  The wireless LAN interface unit 11 is an interface for connecting to the wireless LAN 3.

  The mobile phone network interface unit 12 is an interface for connecting to the mobile phone network 2.

  The user interface unit 13 is an interface for a user to perform a call and various operations, and includes an operation unit such as a handset and a dial key, and a display unit such as a liquid crystal display (not shown).

  The mobile phone function unit 14 is a processing unit for realizing the original function of the mobile phone terminal 1, and includes a call control unit 141 and a call processing unit 142.

  The call control unit 141 processes outgoing / incoming calls with respect to the mobile phone network 2 and establishes a communication path with the other party via the mobile phone network interface unit 12. Note that the call control unit 141 processes outgoing and incoming calls using a mobile phone number other than the representative number of the parent-child phone system assigned to the mobile phone terminal 1.

  The call processing unit 142 transmits the voice input to the user interface unit 13 to the call partner via the call path established by the call control unit 141, and receives the voice received from the call partner via the call path. Output to the user interface unit 13.

  The slave unit mode processing unit 15 is connected to the mobile phone terminal 1-1 operating in the master unit mode via the wireless LAN interface unit 11, and is connected to the mobile phone network 2 via the mobile phone terminal 1-1. Perform handset mode processing. The slave unit mode processing unit 15 includes a SIP-UA unit 151 and a call processing unit 152.

  The SIP-UA unit 151 performs call control processing in accordance with SIP (Session Initiation Protocol), cooperates with a later-described SIP server unit 161 of the cellular phone terminal 1-1 that operates in the base unit mode, and a wireless LAN interface unit 11 is a SIP user agent (SIP client) that establishes a communication path with the other party via the telephone 11.

  The call processing unit 152 performs call processing according to RTP (Realtime Transport Protocol), and transmits the voice input to the user interface unit 13 to the call partner via the call path established by the SIP-UA unit 151. The voice received from the other party through the call path is output to the user interface unit 13.

  The base unit mode processing unit 16 accommodates the mobile phone terminals 1-2 to 1-4 operating in the slave unit mode via the wireless LAN interface unit 11, and these mobile phone terminals 1-2 to 1-4 are accommodated. Base unit mode processing for connection to the cellular phone network 2 is performed. Base unit mode processing unit 16 includes a SIP server unit 161, a call control unit 162, and a gateway control unit 163.

  The SIP server unit 161 performs call control processing in accordance with SIP, cooperates with the SIP-UA unit 151 of the mobile phone terminals 1-2 to 1-4 operating in the slave mode, and wirelessly transmits via the wireless LAN interface unit 11. This is a SIP server that establishes a communication path on the LAN 3.

  The call control unit 162 cooperates with the SIP server unit 161 to process incoming and outgoing calls to and from the mobile phone network 2 and establish a call path on the mobile phone network 2 via the mobile phone network interface unit 12. The call control unit 162 processes outgoing / incoming calls using the representative number of the parent-child phone system assigned to the mobile phone terminal 1.

  The gateway control unit 163 performs a process of connecting the speech path established on the wireless LAN 3 by the SIP server unit 161 and the speech path established on the mobile phone network 2 by the call control unit 162. Specifically, an RTP packet is received via a communication path on the wireless LAN 3, the RTP packet is converted into a call signal for the mobile phone network 2, and the call signal is converted to a call path on the mobile phone network 2. Send to. In addition, a call signal is received via a call path on the cellular phone network 2, the call signal is converted into an RTP packet, and the RTP packet is transmitted to the call path on the wireless LAN 3.

  The main control unit 17 comprehensively controls each unit 11 to 16 of the own mobile phone terminal 1. The main control unit 17 includes a radio field intensity detection unit 171, a radio field intensity transmission / reception unit 172, a mode selection unit 173, a parent device information transmission / reception unit 174, a child device information transmission / reception unit 175, and a parent / child information setting unit 176. A reconfiguration notification transmission / reception unit 177;

  The radio wave intensity detector 171 detects the radio wave intensity of the mobile phone network 2 in the mobile phone network interface unit 12.

  The radio wave intensity transmission / reception unit 172 transmits the radio wave intensity detected by the radio wave intensity detection unit 171 from the wireless LAN interface unit 11 by multicast. Further, the radio wave intensity transmitting / receiving unit 172 receives the radio wave intensity from another mobile phone terminal 1 via the wireless LAN interface unit 11.

  The mode selection unit 173 compares the radio field intensity detected by the radio field intensity detection unit 171 with the radio field intensity received by the radio field intensity transmission / reception unit 172 from each of the other mobile phone terminals 1, and based on the comparison result, Either one of the mode processing unit 15 and the parent device mode processing unit 16 is activated (the own mobile phone terminal 1 operates in either the child device mode or the parent device mode).

  When the mode selection unit 173 activates the base unit mode processing unit 16, the base unit information transmission / reception unit 174 includes address information, number information (for example, a mobile phone number, an extension number, etc.) of the mobile phone terminal 1. The parent device information is transmitted from the wireless LAN interface unit 11 by multicast. Further, the parent device information transmitting / receiving unit 174 receives the parent device information from the other mobile phone terminal 1-1 operating in the parent device mode via the wireless LAN interface unit 11.

  When the base unit information transmitting / receiving unit 174 receives base unit information from another mobile phone terminal 1-1 operating in the base unit mode, the handset unit information transmitting / receiving unit 175 receives the address information and number of the own mobile phone terminal 1 The slave unit information including information (for example, a mobile phone number, an extension number, etc.) is transmitted to the mobile phone terminal 1-1 that is the transmission source of the master unit information via the wireless LAN interface unit 11. Further, the slave unit information transmission / reception unit 175, when the mode selection unit 173 activates the master unit mode processing unit 16, via the wireless LAN interface unit 11, another mobile phone terminal 1 that operates in the slave unit mode 1- The slave unit information is received from each of 2-1-4.

  The parent / child information setting unit 176 sets the parent device information received by the parent device information transmitting / receiving unit 174 in the child device mode processing unit 15. The parent-child information setting unit 176 sets the child device information received by the child device information transmitting / receiving unit 175 in the parent device mode processing unit 16.

  The construction / reconstruction notification transmission / reception unit 177 transmits a parent / child phone system construction notification from the wireless LAN interface unit 11 by multicast when a predetermined event (parent / child phone system construction event) occurs. Also, the construction / reconstruction notification transmission / reception unit 177 receives a parent-child phone system construction notification from another mobile phone terminal 1 via the wireless LAN interface unit 11. In the present embodiment, as a parent-child phone system construction event, when a parent-child phone system construction instruction is received from the user via the user interface unit 13, the radio field intensity detected by the radio field strength detection unit 171 is a predetermined value S1 (mobile phone). A case where both the handset mode processing unit 15 and the base unit mode processing unit 16 are stopped when the signal strength is less than a value set in advance as a minimum required radio wave intensity for communication with the telephone network 2; Is assumed.

  Also, the construction / reconstruction notification transmission / reception unit 177 transmits a parent / child phone system reconstruction notification from the wireless LAN interface unit 11 by multicast when a predetermined event (parent-child phone system reconstruction event) occurs. Further, the construction / reconstruction notification transmission / reception unit 177 receives a parent-child phone system reconstruction notification from another mobile phone terminal 1 via the wireless LAN interface unit 11. In the present embodiment, when a parent-child phone system rebuilding instruction is received from the user via the user interface unit 13 as the parent-child phone system rebuilding event, the radio wave intensity detected by the radio wave strength detecting unit 171 is the predetermined value S1. It is assumed that the base unit mode processing unit 16 is in operation when it is less than (a value set in advance as the minimum required radio wave intensity for communication with the mobile phone network 2).

  In addition, the construction / reconstruction notification transmission / reception unit 177 sends to the mobile phone terminal 1-1 operating in the parent device mode via the wireless LAN interface unit 11 when a predetermined event (parent-child phone system cancellation event) occurs. Send a handset withdrawal notification. Further, the construction / reconstruction notification transmission / reception unit 177 receives the slave unit leaving notification from the other mobile phone terminals 1-2 to 1-4 operating in the slave unit mode via the wireless LAN interface unit 11. In the present embodiment, when a parent / child phone system cancellation instruction is received from the user via the user interface unit 13 as a parent / child phone system cancellation event, either the slave unit mode processing unit 15 or the parent unit mode processing unit 16 When one of them is in operation, or the radio field intensity detected by the radio field intensity detection unit 171 is equal to or greater than a predetermined value S2 (a value set in advance as a sufficient radio field intensity for good communication with the mobile phone network 2). In the case, it is assumed that the handset mode processing unit 15 is in operation.

  FIG. 3 is a flowchart for explaining the operation of the mobile phone terminal 1 shown in FIG.

  At the start of this flow, the slave unit mode processing unit 15 and the master unit mode processing unit 16 are stopped.

  First, the radio wave intensity detection unit 171 starts, for example, periodic detection of the radio wave intensity of the mobile phone network 2 in the mobile phone network interface unit 12 (S10).

  Next, the construction / reconstruction notification transmission / reception unit 177 determines whether or not a parent-child phone system construction event has occurred (S11). As described above, in the present embodiment, when an instruction to construct a parent / child phone system is received from the user via the user interface unit 13, or when the radio wave intensity detected in S10 is less than the predetermined value S1 described above, When both the handset mode processing unit 15 and the base unit mode processing unit 16 are stopped, it is determined that a parent-child phone system construction event has occurred. If it is determined that a parent-child phone system construction event has occurred (YES in S11), a parent-child phone system construction process A described later is performed (S12).

  Further, the construction / reconstruction notification transmission / reception unit 177 determines whether or not a parent-child phone system construction notification has been received from another mobile phone terminal 1 via the wireless LAN interface unit 11 (S13). When the parent-child phone system construction notification is received (YES in S13), a parent-child phone system construction process B described later is performed (S14).

  Further, the construction / reconstruction notification transmission / reception unit 177 determines whether or not a parent-child phone system reconstruction event has occurred (S15). As described above, in the present embodiment, when a reconfiguration instruction for a parent-child phone system is received from the user via the user interface unit 13, either the child device mode processing unit 15 or the parent device mode processing unit 16 When the parent device mode processing unit 16 is in operation when the device is in operation, or when the radio field intensity detected in S10 is less than the predetermined value S1, the parent-child phone system reconfiguration event has occurred. Judge. If it is determined that a parent-child phone system reconstruction event has occurred (YES in S15), a parent-child phone system reconstruction process A described later is performed (S16).

  Further, the construction / reconstruction notification transmission / reception unit 177 determines whether or not a parent-child phone system reconstruction notification is received from another mobile phone terminal 1 via the wireless LAN interface unit 11 (S17). When the parent-child phone system reconstruction notification is received (YES in S17), the parent-child phone system reconstruction process B described later is performed (S18).

  Further, the mode selection unit 173 determines whether or not a parent-child phone system cancellation event has occurred (S19). As described above, in the present embodiment, when an instruction to cancel the parent / child phone system is received from the user via the user interface unit 13, either the child device mode processing unit 15 or the parent device mode processing unit 16 When it is in operation, or when the radio field intensity detected in S10 is equal to or greater than the predetermined value S2, it is determined that the parent-child phone system cancellation event has occurred when the handset mode processing unit 15 is in operation. To do. If it is determined that a parent / child phone system cancellation event has occurred (YES in S19), the operating child device mode processing unit 15 or the parent device mode processing unit 16 is stopped, and a parent / child phone system cancellation process described later is performed. (S20).

  Further, the construction / reconstruction notification transmission / reception unit 177 receives the slave unit from the other mobile phone terminal 1 operating in the slave unit mode via the wireless LAN interface unit 11 when the master unit mode processing unit 16 is in operation. It is determined whether or not a leave notification is received (S21). When the slave unit leaving notification is received (YES in S21), the construction / reconstruction notification transmitting / receiving unit 177 notifies the parent-child information setting unit 176 of the slave unit information specified by the slave unit leaving notification. In response to this, the parent-child information setting unit 176 cancels the setting of the child device information in the parent device mode processing unit 16 (S22). As a result, the mobile phone terminal 1 that is the transmission source of the slave unit leaving notification is detached from the parent-child phone system.

  Further, the main control unit 17 controls the mobile phone network interface unit 12, the user interface unit 13, and the mobile phone function unit 14 to realize the original functions of the mobile phone terminal 1 (S23). That is, the call control unit 141 performs call control processing according to the call instruction received from the user through the user interface unit 13 or the incoming call received from the mobile phone network 2 through the mobile phone network interface unit 12 to perform the mobile phone. A communication path is established on the network 2. Then, the call processing unit 142 transmits the call signal input to the user interface unit 13 to the call path via the mobile phone network interface unit 12. Further, a call signal received from the call path via the mobile phone network interface unit 12 is output from the user interface unit 13.

  FIG. 4 is a flowchart for explaining S12 (parent-child phone system construction processing A) in FIG.

  First, the construction / reconstruction notification transmission / reception unit 177 transmits a parent / child telephone system construction notification from the wireless LAN interface unit 11 by multicast (S1201).

  Next, the base unit information transmission / reception unit 174 receives from the other mobile phone terminal 1 operating in the base unit mode via the wireless LAN interface unit 11 until a timeout occurs due to the elapse of a predetermined time (for example, several seconds). Wait for information to be sent (S1202, S1203).

  If the parent device information is sent before the timeout (YES in S1202, NO in S1203), the process proceeds to S1215.

  On the other hand, when time-out occurs without the parent device information being sent (NO in S1202 and YES in S1203), the parent device information transmitting / receiving unit 174 instructs the radio wave intensity detecting unit 171 to detect the radio wave intensity. In response to this, the radio wave intensity detector 171 newly detects the radio wave intensity of the mobile phone network 2 in the mobile phone network interface unit 12. Then, the radio wave intensity transmission / reception unit 172 transmits the newly detected radio wave intensity from the wireless LAN interface unit 11 by multicast (S1204).

  Next, the radio wave intensity transmission / reception unit 172 receives the radio wave intensity from each of the other mobile phone terminals 1 through the wireless LAN interface unit 11 until a time-out occurs after a predetermined time (for example, several seconds). Wait (S1205, S1206). Then, the radio field strength received from each of the other mobile phone terminals 1 before the time-out and the radio field strength of the mobile phone terminal 1 transmitted in S1204 are passed to the mode selection unit 173.

  In response to this, the mode selection unit 173 compares the radio field intensity of the own mobile phone terminal 1 with the radio field intensity of each of the other mobile phone terminals 1 (S1207). If the radio field strength of the mobile phone terminal 1 is greater than any of the other mobile phone terminals 1 (YES in S1208), the process proceeds to S1209 to operate the mobile phone terminal 1 in the master mode. On the other hand, if the radio field strength of the mobile phone terminal 1 is equal to or lower than the radio field strength of any other mobile phone terminal 1 (NO in S1208), the process proceeds to S1214 to operate the mobile phone terminal 1 in the slave mode. .

  In step S1209, the mode selection unit 173 activates the parent device mode processing unit 16. Then, the base unit information transmission / reception unit 174 generates base unit information including address information, number information, and the like of the mobile phone terminal 1, and transmits this base unit information from the wireless LAN interface unit 11 by multicast (S1210).

  Next, the slave unit information transmission / reception unit 175 receives address information, number information, and the like from each of the other mobile phone terminals 1 via the wireless LAN interface unit 11 until a timeout occurs due to elapse of a predetermined time (for example, several seconds). Wait for the handset information including Then, the parent-child information setting unit 176 sets the child device information received by the child device information transmitting / receiving unit 175 in the parent device mode processing unit 16 (S1211 to S1213).

  As a result, the base unit mode processing unit 16 accommodates other mobile phone terminals 1 that operate in the slave mode via the wireless LAN interface unit 11 and connects these mobile phone terminals 1 to the mobile phone network 2. Performs master mode processing.

  On the other hand, in S <b> 1214, the parent device information transmission / reception unit 174 waits for parent device information to be sent from another mobile phone terminal 1 via the wireless LAN interface unit 11. Thereafter, the process proceeds to S1215.

  When the parent device information transmitting / receiving unit 174 receives the parent device information (YES in S1202 or S1214), the mode selection unit 173 activates the child device mode processing unit 15 in S1215. Then, handset information transmission / reception section 175 generates handset information including address information, number information, etc. of own mobile phone terminal 1 and transmits the base information (master mode) via wireless LAN interface section 11. The handset information is transmitted to the mobile phone terminal 1) operating in (S1216). Next, the parent / child information setting unit 176 sets the parent device information received by the parent device information transmitting / receiving unit 174 in the child device mode processing unit 15 (S1217).

  As a result, the slave unit mode processing unit 15 is connected to another mobile phone terminal 1 that operates in the master unit mode via the wireless LAN interface unit 11, and is connected to the mobile phone network 2 via this mobile phone terminal 1. The handset mode processing is performed.

  FIG. 5A is a flowchart for explaining S14 (parent-child phone system construction processing B) in FIG.

  First, the parent device information transmission / reception unit 174 determines whether one of the child device mode processing unit 15 or the parent device mode processing unit 16 is in operation (S1401).

  If either one of the child device mode processing unit 15 or the parent device mode processing unit 16 is operating (YES in S1401), if the child device mode processing unit 15 is operating (NO in S1402), what This flow is finished without doing anything. If the base unit mode processing unit 16 is in operation (YES in S1402), the base unit information transmitting / receiving unit 174 generates base unit information including address information, number information, etc. of the mobile phone terminal 1, The parent device information is transmitted to the mobile phone terminal 1 that is the transmission source of the parent-child phone system construction notification via the wireless LAN interface unit 11 (S1403). Thereafter, handset information transmitting / receiving section 175 receives handset information including address information, number information, and the like from mobile phone terminal 1 that is the transmission source of the parent-child phone system construction notification via wireless LAN interface section 11. (S1404). Then, the parent-child information setting unit 176 additionally sets the child device information received by the child device information transmitting / receiving unit 175 in the parent device mode processing unit 16 (S1405).

  On the other hand, if both the slave unit mode processing unit 15 and the master unit mode processing unit 16 are not operating (NO in S1401), the process proceeds to S1204 in FIG. 4, and the processes in S1204 to S1217 in FIG. 4 are executed (S1406).

  FIG. 5B is a flowchart for explaining S16 (parent-child phone system reconstruction process A) in FIG.

  First, the mode selection unit 173 stops the currently operating child device mode processing unit 15 or the parent device mode processing unit 16 (S1601). Next, the construction / reconstruction notification transmission / reception unit 177 transmits a parent / child telephone system reconfiguration notification from the wireless LAN interface unit 11 by multicast (S1602). Then, the process proceeds to S1204 in FIG. 4, and the processes in S1204 to S1217 in FIG. 4 are executed (S1603).

  FIG. 6A is a flowchart for explaining S18 (parent-child phone system reconstruction process B) in FIG.

  First, the mode selection unit 173 stops the active child device mode processing unit 15 or the parent device mode processing unit 16 (S1801). Then, the process proceeds to S1204 in FIG. 4, and the processes in S1204 to S1217 in FIG. 4 are executed (S1802).

  FIG. 6B is a flowchart for explaining S20 (parent-child phone system cancellation processing) in FIG.

  If the base unit mode processing unit 16 is operating (YES in S2001), the mode selection unit 173 stops the base unit mode processing unit 16 (S2002). Next, the construction / reconstruction notification transmission / reception unit 177 transmits a parent / child telephone system reconfiguration notification from the wireless LAN interface unit 11 by multicast (S2003).

  On the other hand, if the handset mode processing unit 15 is in operation (NO in S2001), the mode selection unit 173 stops the handset mode processing unit 15 (S2004). Next, the construction / reconstruction notification transmission / reception unit 177 leaves the mobile phone terminal 1 including the address information and number information of the mobile phone terminal 1 to the mobile phone terminal 1 operating in the base unit mode via the wireless LAN interface unit 11. A notification is transmitted (S2005).

  Now, in the mobile phone terminal 1 operating in the base unit mode, when the construction / reconstruction notification transmission / reception unit 177 receives a handset disconnection notification from another mobile phone terminal 1 via the wireless LAN interface unit 11, The parent / child information setting unit 176 is notified of the child device information specified by the withdrawal notification. In response to this, the parent-child information setting unit 176 cancels the setting of the child device information in the parent device mode processing unit 16. As a result, the mobile phone terminal 1 that is the transmission source of the slave unit leaving notification is detached from the parent-child phone system.

  Next, an operation example of the parent-child phone system according to the present embodiment will be described.

  First, in this embodiment, an operation when a parent-child telephone system is constructed will be described.

  FIG. 7 is a sequence diagram for explaining the operation when the parent-child phone system according to the first embodiment of the present invention is constructed.

  In the initial state, it is assumed that all the mobile phone terminals 1-1 to 1-4 have both the child device mode processing unit 15 and the parent device mode processing unit 16 stopped.

  It is assumed that a parent-child phone system construction event has occurred in the cellular phone terminal 1-2 when a parent-child phone system construction instruction is received from the user or the radio field intensity of the cellular phone network 2 is less than the predetermined value S1 (S201). ). The mobile phone terminal 1-2 sends a parent-child phone system construction notification to the wireless LAN 3 by multicast (S202). Then, the other mobile phone terminals 1-1, 1-3, 1-4 receive this parent / child phone system construction notification.

  Next, each of the mobile phone terminals 1-1 to 1-4 detects the radio field intensity of the mobile phone network 2 (S203), transmits the detected radio field intensity to the wireless LAN 3 by multicast, and other mobile phones. The radio field intensity of the terminal 1 is received (S204).

  Then, each of the mobile phone terminals 1-1 to 1-4 compares the radio field intensity of the own mobile phone terminal 1 with the radio field intensity of the other mobile phone terminals 1 (S205). Then, the cellular phone terminal 1-1 having the highest radio field intensity activates the parent device mode processing unit 16 (S206), and transmits the parent device information to the wireless LAN 3 by multicast (S207).

  When each of the other mobile phone terminals 1-2 to 1-4 receives the base unit information from the mobile phone terminal 1-1 via the wireless LAN 3, it activates the handset mode processing unit 15 (S208), Via the mobile phone terminal 1-1 (S209). In addition, the mobile phone terminal 1-1 is registered in the child device mode processing unit 15 as a parent device (S210).

  On the other hand, the mobile phone terminal 1-1 receives the handset information from each of the mobile phone terminals 1-2 to 1-4, and uses the mobile phone terminals 1-2 to 1-4 as the handset. 16 (S211).

  As described above, the parent-child phone system is constructed, and the mobile phone terminal 1-1 having the best radio wave environment of the mobile phone network 2 becomes the parent device. Base unit 1-1 accommodates mobile phone terminals 1-2 to 1-4 as slave units via wireless LAN 3, and connects these slave units 1-2 to 1-4 to mobile phone network 2.

  Next, the operation when the parent-child phone system is reconstructed in the present embodiment will be described.

  The operation in this case is the same as the operation when the parent-child phone system shown in FIG. 7 is constructed except for the following points. That is, in S201, either a parent-child phone system reconfiguration instruction is accepted from the user instead of the parent-child phone system construction event, or the radio wave intensity of the mobile phone network 2 in the parent device is less than the predetermined value S1, A parent-child phone system reconfiguration event occurs in the mobile phone terminal 1, and in step S202, the mobile phone terminal 1 that has generated the parent-child phone system reconfiguration event wirelessly sends a parent-child phone system reconfiguration notification in place of the parent-child phone system reconfiguration notification. It transmits on LAN3 by multicast. Of course, in this case, it is assumed that the mobile phone terminals 1-1 to 1-4 have already constructed the parent-child phone system in the initial state of FIG.

  Next, in this embodiment, an operation when a slave unit is added to the parent-child phone system will be described.

  FIG. 8 is a sequence diagram for explaining the operation when a handset is added to the parent-child phone system according to the first embodiment of the present invention.

  In the initial state, it is assumed that the mobile phone terminals 1-1, 1-3, 1-4 have already constructed a parent / child phone system, and the mobile phone terminal 1-1 is operating in the master mode.

  It is assumed that a parent-child phone system construction event has occurred in the cellular phone terminal 1-2 when a parent-child phone system construction instruction is received from the user or the radio field intensity of the cellular phone network 2 is less than the predetermined value S1 (S221). . The mobile phone terminal 1-2 sends a parent-child phone system construction notification to the wireless LAN 3 by multicast (S222). Then, the other mobile phone terminals 1-1, 1-3, 1-4 receive this parent / child phone system construction notification.

  The cellular phone terminals 1-3 and 1-4 operating in the slave mode ignore the response without responding to the parent / child phone system construction notification. On the other hand, the mobile phone terminal 1-1 operating in the base phone mode sends base phone information including address information, number information, etc. of the mobile phone terminal 1-1 to the mobile phone terminal 1-2 via the wireless LAN 3. Transmit (S223).

  When the mobile phone terminal 1-2 receives the parent device information from the mobile phone terminal 1-1 via the wireless LAN 3, the mobile phone terminal processing unit 15 is activated (S224), and the mobile phone terminal 1- The slave unit information is transmitted to 1 (S225). In addition, the mobile phone terminal 1-1 is registered in the child device mode processing unit 15 as a parent device (S226).

  On the other hand, the cellular phone terminal 1-1 receives the slave unit information from the cellular phone terminal 1-2, and registers the cellular phone terminal 1-2 in the master unit mode processing unit 16 as a slave unit (S227).

  As described above, the cellular phone terminal 1-2 is newly added as a slave unit to the parent-child phone system.

  Next, an operation when there is an incoming call to the parent-child phone system according to the present embodiment will be described.

  FIG. 9 is a sequence diagram for explaining the operation when there is an incoming call in the parent-child phone system according to the first embodiment of the present invention.

  In the initial state, it is assumed that the mobile phone terminals 1-1 to 1-4 have already constructed the parent-child phone system, and the mobile phone terminal 1-1 is operating in the parent device mode.

  When the mobile phone terminal 1-1 serving as the parent device receives an incoming call from the mobile phone network 2 with the representative number of the parent-child phone system as the destination number (S241), the mobile phone terminal 1-1 responds to this (primary response), 2 establishes a communication path with the other party via the telephone 2 and transmits voice guidance or the like prompting the user to input the mobile phone number of the other party through the communication path (S242).

  Next, for example, when a push button signal indicating a mobile phone number is sent from the calling party (S243), the mobile phone terminal 1-1 identifies the address of the mobile phone terminal 1 to which the mobile phone number is assigned. To do. Here, it is assumed that the address of the mobile phone terminal 1-3 is specified.

  Next, the cellular phone terminal 1-1 calls the cellular phone terminal 1-3 via the wireless LAN 3 (S244). When the mobile phone terminal 1-3 responds, for example, when the user goes off-hook (S245), a communication path is established with the mobile phone terminal 1-3 via the wireless LAN 3. Then, this call path is connected to a call path established on the mobile phone network 2. As a result, a call path is formed between the mobile phone terminal 1-3 and the call partner via the mobile phone terminal 1-1, and a call is started (S246).

  The first embodiment of the present invention has been described above.

  In the present embodiment, a parent-child phone system is constructed by a plurality of mobile phone terminals 1. Among these mobile phone terminals 1, the mobile phone terminal 1-1 having the best radio wave environment of the mobile phone network 2 serves as a master unit, and the mobile phone terminals 1-2 to 1-4 as slave units via the wireless LAN 3. Accommodate. Then, the mobile phone terminal 1-1 connects the mobile phone terminals 1-2 to 1-4 to the mobile phone network 2 via the wireless LAN 3.

  Therefore, according to the present embodiment, since the cellular phone terminal 1-1 having the best radio wave environment of the cellular phone network 2 is used as a parent device, a parent-child phone system with a plurality of cellular phone terminals 1 is constructed. Therefore, it is possible to realize a good call between each of the mobile phone terminals 1-2 to 1-4 having a poor radio wave environment and the mobile phone network 2.

  In the present embodiment, when the base phone mode processing unit 16 is activated, the mobile phone terminal 1-1 wirelessly transmits base unit information including address information, number information, and the like of the mobile phone terminal 1-1. It transmits by multicast on LAN3, receives the subunit | mobile_unit information from other mobile telephone terminals 1-2 to 1-4 via wireless LAN3, and uses these portable telephone terminals 1-2 to 1-4 as a subunit | mobile_unit. Register in the master mode processing unit 16. On the other hand, when the mobile phone terminals 1-2 to 1-4 receive the base unit information from the mobile phone terminal 1-1 via the wireless LAN 3, the mobile phone mode processing unit 15 is activated and the mobile phone terminal 1-2 is started. The handset information including the address information, number information, etc. of 1-4 is transmitted to the mobile phone terminal 1-1, and the mobile phone terminal 1-1 is registered in the handset mode processing unit 15 as the base device.

  Therefore, according to the present embodiment, a parent-child phone system using the mobile phone terminal 1 can be freely and appropriately constructed.

  Further, in the present embodiment, the mobile phone terminal 1 is configured such that the radio field intensity of the mobile phone network 2 is less than the predetermined value S1 when both the handset mode processing unit 15 and the base unit mode processing unit 16 are stopped. Then, a parent-child telephone system construction notification is transmitted on the wireless LAN 3 by multicast. If the base unit information is not received from the other mobile phone terminal 1 within a predetermined time, the radio field strength of the mobile phone network 2 is transmitted to and received from the other mobile phone terminal 1 to construct the parent-child phone system. To start. If the base unit information is received from another mobile phone terminal 1 within a predetermined time, the mobile unit information including address information, number information, etc. of the mobile phone terminal 1 is transmitted to the mobile phone terminal 1 To join the parent-child phone system as a handset.

  On the other hand, if the base phone mode processing unit 16 is operating, the mobile phone terminal 1 that has received the parent-child phone system construction notification transmits base unit information including address information, number information, etc. of the mobile phone terminal 1 itself. Then, the slave unit information is received from the transmission source of the parent-child phone system construction notification, and this transmission source is registered as a slave unit. If the handset mode processing unit 15 is in operation, no response is made to the parent-child phone system construction notification, and it is ignored. If both the handset mode processing unit 15 and the base unit mode processing unit 16 are stopped, the radio wave intensity of the mobile phone network 2 is transmitted to and received from another mobile phone terminal 1, and the base phone system Start building.

  Therefore, according to the present embodiment, the cellular phone terminal 1 automatically constructs a parent / child phone system or joins an existing parent / child phone system when the radio wave environment of the cellular phone network 2 deteriorates. Better communication with the telephone network 2 can be realized.

  In the present embodiment, the cellular phone terminal 1-1 in which the master unit mode processing unit 16 is operating reconstructs the parent / child phone system on the wireless LAN 3 when the radio field intensity of the cellular phone network 2 becomes less than the predetermined value S1. Send notifications by multicast. Then, the radio wave intensity of the mobile phone network 2 is transmitted to and received from the other mobile phone terminals 1-2 to 1-4, and the reconstruction of the parent-child phone system is started.

  Therefore, according to the present embodiment, since the mobile phone terminal 1 having the best radio wave environment of the mobile phone network 2 is automatically changed so as to become the parent device, any mobile phone terminal 1 is connected to the mobile phone network 2. A better call can be realized.

[Second Embodiment]
FIG. 10 is a schematic diagram of the extension telephone system according to the second embodiment of the present invention.

  As illustrated, the extension telephone system of the present embodiment includes a plurality of mobile phone terminals 1A-1 to 1A-3 (hereinafter also simply referred to as mobile phone terminals 1A), at least one fixed phone terminal 6, And a telephone control device 5.

  The telephone control device 5 accommodates the fixed telephone terminal 6 as an extension terminal. The telephone control device 5 is connected to the public telephone network 8 via the gateway 7 and accommodates the mobile telephone terminal 1A as an extension terminal via the public telephone network 8 and the mobile telephone network 2. The public telephone network 8 represents an analog telephone network, but may be connected to other WAN such as ISDN or IP network instead.

  The mobile phone terminals 1A-1 to 1A-3 are connected to each other by ad hoc communication of the wireless LAN 3 to form a parent-child phone system. Of the cellular phone terminals 1A-1 to 1A-3, the cellular phone terminal 1A-1 having the best radio wave environment of the cellular phone network 2 is the parent device. The base unit 1A-1 accommodates other mobile phone terminals 1A-2 and 1A-3 as slave units via the wireless LAN 3, and these slave units 1A-2 and 1A-3 are stored in the mobile phone network 2 and the public telephone network. 8 and the gateway 7 via the gateway 7. The master unit 1A-1 is not only used for relaying between the slave units 1A-2 and 1A-3 and the mobile phone network 2 and the public telephone network 8, but also for extension calls between the slave units 1A-2 and 1A-3. Also controls hold and transfer. In addition to the mobile phone number assigned by the mobile phone network 2, each mobile phone terminal 1A is assigned an extension number and an extension group number by the telephone control device 5.

  FIG. 11 is a schematic configuration diagram of the mobile phone terminal 1A shown in FIG.

  As shown in the figure, the mobile phone terminal 1A of the present embodiment is different from the mobile phone terminal 1 of the first embodiment shown in FIG. 2 in that the base unit mode processing unit 16 is replaced with a call control unit 162. That is, a control unit 162A is provided, and a parent-child information transmission unit 178 is added to the main control unit 17. Other configurations are the same as those of the cellular phone terminal 1 of the first embodiment shown in FIG.

  The call control unit 162 </ b> A cooperates with the SIP server unit 161 to process outgoing / incoming calls to the telephone control device 5 and establish a communication path with the telephone control device 5 via the mobile phone network interface unit 12.

  When the parent device mode processing unit 16 is in operation, the parent / child information transmission unit 178 includes the child device information including the address information and number information of the mobile phone terminal 1A, and the parent device information transmission / reception unit 174 transmitted. The parent-child information including the machine information and the child machine information received by the child machine information transmitting / receiving unit 175 from each of the other mobile phone terminals 1A is transmitted to the telephone control device 5 via the mobile phone network interface unit 12. The reason why the child device information of the mobile phone terminal 1A operating in the parent device mode is included in the parent-child information is to respond to a call for the extension number assigned to the mobile phone terminal 1A.

  The operation of the mobile phone terminal 1A according to the present embodiment is the same as the operation of the mobile phone terminal 1 according to the first embodiment shown in FIGS. 3 to 6 except for the following points.

  That is, in S1213 of FIG. 4, when a time-out occurs due to the elapse of a predetermined time, the parent-child information transmitting unit 178 sends the parent device information transmitted by the parent device information transmitting / receiving unit 174 in S1210 and the child device information transmitting / receiving unit 175 so far in S1211. Generates the parent-child information including the child device information received and the child device information including the address information of the mobile phone terminal 1A, the number information, etc., and calls the parent-child information via the mobile phone network interface unit 12. It transmits to the control apparatus 5.

  In S1405 of FIG. 5, when the parent-child information setting unit 176 additionally sets the child device information received in S1404 to the parent device mode processing unit 16, the parent-child information transmission unit 178 causes the child device information and the parent device information to be set. Parent / child information including the parent device information transmitted by the transmission / reception unit 174 and the child device information including the address information and number information of the own mobile phone terminal 1A is generated, and the parent / child information is transmitted to the mobile phone network interface unit 12. To the telephone control device 5.

  In S22 of FIG. 3, when the parent-child information setting unit 176 cancels the setting of the child device information in the parent device mode processing unit 16, the parent-child information transmission unit 178 causes the address information and the number of the own mobile phone terminal 1A. The extension leaving information including the parent device information including information and the like and the child device information is generated, and the extension leaving information is transmitted to the telephone control device 5 via the mobile phone network interface unit 12.

  FIG. 12 is a schematic configuration diagram of the telephone control device 5 shown in FIG.

  As shown in the figure, the telephone control device 5 includes a fixed telephone terminal interface unit 51, a public telephone network interface unit 52, a call control unit 53, a relay unit 54, an extension terminal information storage unit 55, and an extension terminal management unit. 56.

  The fixed telephone terminal interface unit 51 is an interface for connecting to the fixed telephone terminal 6.

  The public telephone network interface unit 52 is an interface for connecting to the public telephone network 8.

  The call control unit 53 processes incoming / outgoing calls to / from the public telephone network 8 and receives the fixed telephone terminal 6 accommodated via the fixed telephone terminal interface part 51 or the mobile telephone terminal 1A accommodated via the public telephone network interface part 52. And establish a call path with the other party.

  The relay unit 54 relays the call data between the fixed telephone terminal interface unit 51 and the public telephone network interface unit 52 so that the call data is transmitted via the call path established by the call control unit 141.

  The extension terminal information storage unit 55 stores information on extension terminals accommodated by the own telephone control device 5. FIG. 13 is a diagram schematically showing the registered contents of the extension terminal information storage unit 55.

  As illustrated, a record 550 is registered in the extension terminal information storage unit 55 for each extension terminal to be accommodated. The record 550 includes a field 551 for registering an extension group number, a field 552 for registering the terminal type of the extension terminal (whether it is a fixed telephone terminal 6 or a mobile phone terminal 1A), and the extension terminal is a mobile phone terminal. 1A, it has a field 553 for registering the mobile phone number of the master unit and a field 554 for registering the extension number.

  Here, when the terminal type of the field 552 of the record 550 is “fixed”, that is, when the extension terminal is the fixed telephone terminal 6, “Null” (not applicable) is registered in the field 553 of this record 550. The On the other hand, when the terminal type of the field 552 of the record 550 is “mobile”, that is, when the extension terminal is the mobile phone terminal 1A, the mobile phone terminal 1A has any parent-child phone in the field 553 of the record 550. If it belongs to the system, the mobile phone number of the parent device is registered, and if it does not belong to any parent-child phone system, “Null” (not applicable) is registered.

  The extension terminal management unit 56 updates the extension terminal information storage unit 55 in accordance with the parent-child information or extension disconnection information from the mobile phone terminal 1A via the public telephone network interface unit 52. Specifically, when the parent-child information transmitted by the mobile phone terminal 1A operating as the parent device is received in the parent-child phone system construction processing A, B and the parent-child telephone reconstruction processing A, B, the parent-child information is included in the parent-child information. The mobile phone number of the parent device information included in the parent-child information is registered in the field 553 of the record 550 in which the extension number of each child device information is registered in the field 554. Further, in S22 of FIG. 3, when the extension departure information transmitted by the mobile phone terminal 1A operating as the base unit is received, the extension number of the slave unit information included in the extension departure information is registered in the field 554. The mobile phone number of the parent device information included in the extension departure information is deleted from the field 553 of the existing record 550.

  FIG. 14 is a flowchart for explaining the operation of the telephone control device 5 shown in FIG.

  When the extension terminal management unit 56 receives the parent-child information from the mobile phone terminal 1A via the public telephone network interface unit 52 (YES in S301), the extension terminal management unit 56 extracts one piece of child machine information included in the parent-child information (S302). ). Then, the record 550 is searched from the extension terminal information storage unit 55 using the extension number included in the slave unit information as a key (S303), and the field 553 of the searched record 550 is included in the parent-child information. The mobile phone number of the parent device information is registered (S304). The extension terminal management unit 56 performs the processing of S302 to S304 on all the child device information included in the parent-child information (S305).

  Further, when the extension terminal management unit 56 receives the extension departure information from the mobile phone terminal 1A via the public telephone network interface unit 52 (YES in S306), the extension terminal information is extracted from the extension departure information. (S307). Then, the record 550 is retrieved from the extension terminal information storage unit 55 using the extension number included in the slave unit information as a key (S308), and is included in the extension departure information from the field 553 of the retrieved record 550. The mobile phone number in the parent device information is deleted (S309).

  The call control unit 53 realizes the original function (relay processing) of the telephone control device 5 in cooperation with the relay unit 54 (S310).

  That is, the call control unit 53 transmits a call instruction received from the fixed telephone terminal 6 via the fixed telephone terminal interface unit 51, a call instruction received from the mobile phone terminal 1A via the public telephone network interface unit 52, or a public telephone network. Call control processing is performed according to the incoming call received from the public telephone network 8 via the interface unit 52, and a call path is established between the extension terminal (the fixed telephone terminal 6 and the mobile phone terminal 1A) and the other party. The relay unit 54 relays the call data between the fixed telephone terminal interface unit 51 and the public telephone network interface unit 52 so that the call data is transmitted through the call path established by the call control unit 53. .

  Next, an operation example of the extension telephone system according to the present embodiment will be described.

  First, in the present embodiment, an operation when a parent-child telephone system is constructed and each mobile phone terminal 1A is accommodated in the telephone control device 5 as an extension terminal will be described.

  FIG. 15 is a sequence diagram for explaining an operation when a parent-child phone system is constructed and each mobile phone terminal 1A is accommodated in the telephone control device 5 as an extension terminal in the second embodiment of the present invention. .

  In the initial state, it is assumed that all the mobile phone terminals 1A-1 to 1A-3 have both the handset mode processing unit 15 and the base unit mode processing unit 16 stopped.

  In FIG. 15, the processing of S401 to S411 is the same as S201 to S211 of FIG. In step S411, the mobile phone terminal 1A-1 receives the handset information from each of the mobile phone terminal 1A-2 and the mobile phone terminal 1A-3, and sends the mobile phone terminals 1A-2 and 1A-3 to the handset. As the base unit mode processing unit 16, the base unit information including the address information and number information of the mobile phone terminal 1 A- 1, the slave unit information, the mobile phone terminal 1 A- 2, and the mobile phone terminal 1 A- 3 Is generated, and the parent-child information is transmitted to the telephone control device 5 via the mobile phone network 2, the public telephone network 8, and the gateway 7 (S412).

  In step S412, the mobile phone terminal 1A-1 makes a call to the telephone control device 5, forms a communication path with the telephone control device 5, and transmits parent-child information to the telephone control device 5 using this communication path. You may make it do. Alternatively, the cellular phone terminal 1A and the telephone control device 5 may be connected to an IP network (not shown), and parent-child information may be transmitted to the telephone control device 5 using this IP network.

  Next, when receiving the parent-child information from the mobile phone terminal 1A-1, the telephone control device 5 uses the extension number of the handset information as a key for each handset information included in the parent-child information. The record 550 is retrieved from the information storage unit 55, and the mobile phone number of the parent device information included in the parent-child information is registered in the field 553 of the retrieved record 550 (S413).

  Next, in this embodiment, an operation when the parent-child phone system is reconstructed and each mobile phone terminal 1A is accommodated in the telephone control device 5 as an extension terminal will be described.

  The operation in this case is the same as the operation in the case where the parent-child phone system shown in FIG. 15 is constructed and each mobile phone terminal 1A is accommodated in the telephone control device 5 as an extension terminal, except for the following points. In other words, in S401, either a parent-child phone system reconfiguration instruction is accepted from the user instead of the parent-child phone system construction event, or if the radio wave intensity of the mobile phone network 2 is less than the predetermined value S1 in the case of the parent device, Occurs in the mobile phone terminal (for example, the mobile phone terminal 1A-2), and in S402, the mobile phone terminal 1A-2 that is the source of the parent-child phone system rebuilding event notifies the parent-child phone system construction notification Instead, a parent-child phone system reconfiguration notification is transmitted on the wireless LAN 3 by multicast. In this case, as a matter of course, it is assumed that the cellular phone terminals 1A-1 to 1A-3 have already constructed the parent-child phone system in the initial state of FIG.

  Next, in this embodiment, an operation when a slave unit is added to the parent-child phone system and this slave unit is accommodated in the telephone control device 5 as an extension terminal will be described.

  FIG. 16 is a sequence diagram for explaining the operation when a slave unit is added to the master-slave telephone system and this slave unit is accommodated in the telephone control device 5 as an extension terminal in the second embodiment of the present invention. is there.

  In the initial state, it is assumed that the mobile phone terminals 1A-1 and 1A-3 have already constructed the parent-child phone system, and the mobile phone terminal 1A-1 is operating in the parent device mode.

  In FIG. 16, the process of S421-S427 is the same as that of S221-S227 of FIG. Then, when the mobile phone terminal 1A-1 receives the slave unit information from the mobile phone terminal 1A-2 in S427 and registers the mobile phone terminal 1A-2 as the slave unit in the base unit mode processing unit 16, Master unit information including address information and number information of the telephone terminal 1A-1, slave unit information including address information and number information of the own mobile phone terminal 1A-1, and a slave received from the mobile phone terminal 1A-2 The parent-child information including the machine information is generated, and the parent-child information is transmitted to the telephone control device 5 via the mobile phone network 2, the public telephone network 8, and the gateway 7 (S428).

  Next, when the telephone control device 5 receives the parent-child information from the mobile phone terminal 1A-1, the telephone control device 5 records from the extension terminal information storage unit 55 using the extension number of the child device information included in the parent-child information as a key. 550 is searched, and the mobile phone number of the parent device information included in the parent-child information is registered in the field 553 of the searched record 550 (S429).

  Next, the operation when there is an incoming call to the extension telephone system according to the present embodiment will be described.

  FIG. 17 is a sequence diagram for explaining the operation when there is an incoming call in the extension telephone system according to the second embodiment of the present invention.

  In the initial state, it is assumed that the mobile phone terminals 1A-1 to 1A-3 have already constructed the parent-child phone system, and the mobile phone terminal 1A-1 is operating in the parent device mode. Further, it is assumed that the mobile phone terminals 1A-1 to 1A-3 and the fixed phone terminal 6 belong to the same extension group.

  When there is an incoming call with designation of an extension group number from the public telephone network 8 (S441), the telephone control device 5 refers to the extension terminal information storage unit 55 and is fixed to which the designated extension group number is assigned. The telephone terminals 6 are called all at once (S442). Further, referring to the extension terminal information storage unit 55, the base phone mobile phone number of the mobile phone terminals 1A-1 to 1A-3 to which the designated extension group number is assigned (the mobile phone number of the mobile phone 1A-1). ) (S443). This call is received via the public telephone network 8 and the mobile phone network 2 to the mobile phone terminal 1A-1 operating in the master mode.

  Next, the cellular phone terminal 1A-1 responds to this incoming call (primary response), and establishes a communication path with the telephone control device 5 via the cellular phone network 2 and the public telephone network 8 (S444). .

  When a telephone communication path is established with the mobile phone terminal 1A-1, the telephone control device 5 transmits a push button signal or the like representing the designated extension group number using the telephone communication path (S445). In response, the cellular phone terminal 1A-1 calls the cellular phone terminals 1A-2 and 1A-3 to which the designated extension group number is assigned via the wireless LAN 3. Since the designated extension group number is also assigned to the own mobile phone terminal 1A-1, a ringing tone is transmitted (S446).

  Next, when the calling fixed telephone terminal 6 responds, for example, when the user goes off-hook (S447), the telephone control device 5 transmits a response notification to the mobile phone terminal 1A-1 (S448). In response to this, the cellular phone terminal 1A-1 disconnects the communication path established with the telephone control device 5, stops sending the ringing tone, and calls the cellular phone terminals 1A-2, 1A- A response notification is transmitted to 3 (S449).

  In addition, the telephone control device 5 transmits the response received from the fixed telephone terminal 6 to the public telephone network 8. As a result, a call path is formed between the fixed telephone terminal 6 and the call partner via the telephone control device 5, and a call is started (S450).

  When the telephone control device 5 holds the fixed telephone terminal 6 during a call and receives a transfer instruction from the fixed telephone terminal 6 with designation of the extension number of the transfer destination (cell phone terminal 1A-2). (S451) Referring to the extension terminal information storage unit 55, a call is made to the base phone mobile phone number (the mobile phone number of the mobile phone 1A-1) of the mobile phone terminal 1A-2 to which the designated extension number is assigned. (S452). This call is received via the public telephone network 8 and the cellular phone network 2 to the cellular phone terminal 1A-1 operating in the master mode.

  Next, the cellular phone terminal 1A-1 responds to this incoming call (primary response), and establishes a communication path with the telephone control device 5 via the cellular phone network 2 and the public telephone network 8 (S453). .

  When the communication path is established with the mobile phone terminal 1A-1, the telephone control device 5 uses this communication path to transmit a push button signal or the like representing the designated extension number (S454). In response to this, the cellular phone terminal 1A-1 calls the cellular phone terminal 1A-2 to which the designated extension number is assigned via the wireless LAN 3 (S455).

  Next, when the cellular phone terminal 1A-2 responds to the cellular phone terminal 1A-2 that is being called by the user going off-hook or the like (S456), the cellular phone terminal 1A-1 transfers this to the telephone control device 5 and via the wireless LAN 3 A communication path is established with the mobile phone terminal 1A-2. Then, this communication path is connected to a communication path established with the telephone control device 5. Thereby, a communication path is formed between the mobile phone terminal 1A-2 and the telephone control device 5 via the mobile phone terminal 1A-1.

  Further, when receiving a response from the cellular phone terminal 1A-1, the telephone control device 5 transmits a response notification to the fixed telephone terminal 6 that is the transmission source of the transfer instruction (S457). Further, a call path established between the fixed telephone terminal 6 and the other party is connected to a call path established between the mobile phone terminal 1A-2. As a result, a call path is formed between the mobile phone terminal 1A-2 and the call partner via the telephone control device 5 (S458).

  The second embodiment of the present invention has been described above.

  The present embodiment has the following effects in addition to the effects of the first embodiment.

  That is, in the present embodiment, the mobile phone terminal 1A-1 operating in the base phone mode includes the base phone information and handset information of the mobile phone terminal 1A-1 and the mobile phone terminals 1A-2 and 1A-3. The parent-child information including each child device information is transmitted to the telephone control device 5. The mobile phone terminal 1A-1 connects the mobile phone terminals 1A-2 and 1A-3 to the telephone control device 5. On the other hand, the mobile phone terminals 1A-2 and 1A-3 operating in the slave mode are connected to the outside line (public telephone network 8) or the fixed phone terminal 6 via the mobile phone terminal 1A-1 and the telephone control device 5. .

  In addition, the telephone control device 5 determines each of the mobile phone terminals 1A-1 to 1A-3 specified by the handset information for each handset information included in the parent-child information received from the mobile phone terminal 1A-1. As an extension terminal accommodated in the own telephone control device 5, the extension terminal is managed in association with the mobile phone number of the mobile phone terminal 1A-1 specified by the parent machine information included in the parent-child information. When the telephone control device 5 receives a call having the extension group number or the extension number as the destination number, the mobile phone terminal having the parent mobile phone number associated with the extension group number or the extension number The call is relayed to 1A-1.

  In the first embodiment, each mobile phone terminal 1 needs a mobile phone number used as a representative number shared by a plurality of mobile phone terminals 1, in addition to the original mobile phone number. For this reason, it is assumed that the mobile phone network 2 provides a service for assigning a plurality of mobile phone numbers to each mobile phone terminal 1.

  On the other hand, in the present embodiment, the extension number and extension group number of each of the mobile phone terminals 1A to 1A-3 are associated with the mobile phone number of the base unit 1A-1 and managed by the telephone control device 5. Is done. Then, the telephone control device 5 sends the incoming call with the designation of the extension number and extension group number to the mobile phone terminal 1A-1 of the parent device having the mobile phone number associated with the extension number and extension group number. Relay. For this reason, each of the mobile phone terminals 1A to 1A-3 needs an extension number and an extension group number for use as an extension terminal, but only one mobile phone number may be assigned from the mobile phone network 2. Therefore, according to the present embodiment, the mobile phone network 2 may not provide a service for assigning a plurality of mobile phone numbers to the individual mobile phone terminals 1A to 1A-3.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the gist.

  For example, in each of the above embodiments, the mobile phone terminals 1 and 1A are taken as examples of the communication terminals having the wireless communication function, and the mobile phone terminals 1-1 and 1A-1 operating in the master mode are The case of connecting the mobile phone terminals 1-2 to 1-4, 1A-2 to 1A-3 operating in the mobile phone network 2 is described. However, the present invention is not limited to such a case. The communication terminal having the wireless communication function may be another wireless communication terminal such as a PHS terminal. The wireless communication terminal that operates in the parent device mode may connect the wireless communication terminal that operates in the child device mode to another wide-area wireless communication network such as PHS.

  Further, in each of the above embodiments, the master unit accommodates the slave unit via the wireless LAN 3, but may accommodate the slave unit via another narrow area wireless communication network such as Bluetooth.

  In the above-described embodiment, the cellular phone terminals 1 and 1A shown in FIGS. 2 and 11 and the telephone control device 5 shown in FIG. 12 are ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), and the like. The integrated logic IC may be executed by hardware, or may be executed by software by a computer such as a DSP (Digital Signal Processor). Alternatively, in a general-purpose computer such as a PC (Personal Computer) equipped with an auxiliary storage device such as a CPU, memory, HDD, DVD-ROM, and a communication interface such as a NIC (Network Interface Card) and a modem, the CPU executes a predetermined program. It may be realized by loading from an auxiliary storage device onto a memory and executing it.

  1, 1A: mobile phone terminal, 2: mobile phone network, 3: wireless LAN, 5: telephone control device, 6: fixed telephone terminal, 7: gateway, 8: public telephone network, 11: wireless LAN interface unit, 12: Mobile phone network interface unit, 13: user interface unit, 14: mobile phone function unit, 15: handset mode processing unit, 16: base unit mode processing unit, 17: main control unit, 51: fixed telephone terminal interface unit, 52 : Public telephone network interface unit, 53: call control unit, 54: relay unit, 55: extension terminal information storage unit, 56: extension terminal management unit, 141: call control unit, 142: call processing unit, 151: SIP-UA , 152: Call processing unit, 161: SIP server unit, 162, 162A: Call control unit, 163: Gateway control unit, 171: Radio wave intensity detection unit, 172: Radio wave Degree transmitting and receiving unit, 173: mode selection unit, 174: the parent machine information transmitting and receiving unit, 175: child machine information transmitting and receiving unit, 176: parent-child information setting unit, 177: construction and reconstruction notification transmitting and receiving unit, 178: parent-child information transmission unit

Claims (8)

  1. A communication terminal having a wireless communication function,
    A first interface means for connecting to a first wireless network;
    A second interface means for connecting to a second wireless network;
    Each of the other communication terminals connected to the second wireless network is accommodated as a slave unit via the second interface unit, and the first wireless network is connected to the first wireless network via the first interface unit. A master mode processing means for connecting the slave unit;
    A child connected via the second interface means to another communication terminal operating as a parent device connected to the second wireless network, and connected to the first wireless network via the parent device Machine mode processing means;
    Mode selection means for activating any one of the parent device mode processing means and the child device mode processing means;
    Radio wave intensity detecting means for detecting the radio wave intensity of the first wireless network;
    Radio wave intensity notification transmission means for transmitting the radio wave intensity notification detected by the radio wave intensity detection means to each of the other communication terminals connected to the second wireless network via the second interface means. When,
    Telephone strength notification receiving means for receiving a notification of radio field strength from each of the other communication terminals connected to the second wireless network via the second interface means,
    The mode selection means includes
    When the radio field intensity detected by the radio field intensity detection unit is greater than any of the radio field strengths received by the telephone strength notification receiving unit from each of the other communication terminals, the base unit mode processing unit is activated, If not, the communication terminal is configured to activate the slave unit mode processing means.
  2. The communication terminal according to claim 1,
    When the mode selection unit activates the base unit mode processing unit, each of the other communication terminals connected to the second wireless network via the second interface unit transmits its own communication terminal. Parent device information transmitting means for transmitting parent device information including the information of
    When the base unit information transmitting unit transmits the base unit information, from each of the other communication terminals connected to the second wireless network via the second interface unit, A handset information receiving means for receiving handset information including information;
    Slave unit information setting means for setting the slave unit information received by the slave unit information receiving unit in the master unit mode processing unit;
    Via the second interface means, from the other communication terminal connected to the second wireless network, a master information receiving means for receiving master information including information of the communication terminal;
    A master unit information setting unit for setting the master unit information received by the master unit information receiving unit in the slave unit mode processing unit;
    A slave unit information transmitting unit for transmitting slave unit information including information of the own communication terminal to the transmission source of the master unit information received by the master unit information receiving unit via the second interface unit; A communication terminal characterized by comprising:
  3. The communication terminal according to claim 2,
    When the radio field intensity detected by the radio field intensity detection means is less than a predetermined value, if both the master unit mode processing unit and the slave unit mode processing unit are stopped, the second interface unit is provided. Via a construction notification transmission means for transmitting a parent-child telephone system construction notification to each of the other communication terminals connected to the second wireless network,
    Construction notification receiving means for receiving a parent-child telephone system construction notification from the other communication terminal connected to the second wireless network via the second interface means;
    The radio wave intensity notification transmission means includes
    When the construction notification transmission means transmits the parent-child phone system construction notification, if the parent device information receiving means does not receive the parent device information within a predetermined time, or the construction notification receiving means When both the parent device mode processing means and the child device mode processing means are stopped when the parent-child phone system construction notification is received, the second wireless network is connected via the second interface means. A notification of the radio field intensity detected by the radio field intensity detecting means is transmitted to each of the other communication terminals connected to
    The parent device information transmitting means includes
    In the case where the construction notification receiving means receives the parent / child phone system construction notification, if the parent device mode processing means is operating, the transmission source of the parent / child phone system construction notification via the second interface means To the base unit information including the information of the self-communication terminal,
    The mode selection means includes
    A communication terminal, wherein the slave unit mode processing unit is activated when the master unit information receiving unit receives the master unit information from another communication terminal.
  4. The communication terminal according to any one of claims 1 to 3,
    In the case where the radio field intensity detected by the radio field intensity detection means is less than a predetermined value, if the master mode processing means is operating, the second wireless network is connected via the second interface means. Reconfiguration notification transmission means for transmitting a parent-child phone system reconfiguration notification to each of the other communication terminals connected to
    Reconfiguration notification receiving means for receiving a parent-child telephone system reconfiguration notification from the other communication terminal connected to the second wireless network via the second interface means,
    The radio wave intensity notification transmission means includes
    When the reconfiguration notification transmission means transmits the parent / child phone system reconfiguration notification, or when the reconfiguration notification reception means receives the parent / child phone system reconfiguration notification, via the second interface means, The communication terminal, wherein the notification of the radio field intensity detected by the radio field intensity detecting means is transmitted to each of the other communication terminals connected to the second wireless network.
  5. The communication terminal according to any one of claims 1 to 4, wherein
    When the mode selection unit activates the base unit mode processing unit, the base unit information including information of the own communication terminal, and the slave unit information received from each of the other communication terminals by the slave unit information reception unit Further comprising parent-child information transmitting means for transmitting to the main device connected to the first wireless network via the first interface means,
    The master mode processing means is
    Via the first interface means, connect the slave to the main device connected to the first wireless network,
    The slave mode processing means is
    The first wireless network or a terminal accommodated in the main device is connected via the master device and the main device connected to the parent device via the first wireless network. Communication terminal.
  6. A main apparatus for accommodating an extension terminal including the communication terminal according to claim 5,
    Parent-child information receiving means for receiving the parent device information and the child device information from the communication terminal via the first wireless network;
    The master unit specified by the master unit information received by the master-slave information reception unit in association with the extension group number and extension number of the slave unit specified by the slave unit information received by the master-slave information reception unit An extension registration means for registering the mobile phone number of
    Call control means for relaying the call to the mobile phone number of the base unit corresponding to the extension group number or extension number when a call having the extension group number or the extension number as a destination number arrives. A main device characterized by that.
  7. A parent-child telephone system construction method by a plurality of communication terminals having a wireless communication function,
    Each of the plurality of communication terminals detects the radio field intensity of the first wireless network;
    A notification of the detected phone strength is transmitted to each of the other communication terminals connected to the second wireless network;
    From each of the other communication terminals connected to the second wireless network, a notification of radio field strength is received,
    When the detected radio field intensity is greater than any of the radio field intensity received from each of the other communication terminals, the other communication terminal connected to the second wireless network is accommodated as a slave unit, Operates in a master mode for connecting the slave to the first wireless network,
    When the detected radio field intensity is lower than the radio field intensity received from any other communication terminal, connect to the other communication terminal operating in the master mode via the second wireless network, A parent-child telephone system construction method characterized by operating in a handset mode connected to the first wireless network via the communication terminal.
  8. The parent-child phone system construction method according to claim 7,
    The communication terminal operating in the master mode is
    Main unit information including information on its own communication terminal and slave unit information including information on each of the other communication terminals operating in the slave mode are transmitted to the main device connected to the first wireless network. Send
    Connecting each of the other communication terminals operating in the slave mode to the main device connected to the first wireless network;
    The main unit is
    Receiving the master unit information and the slave unit information from the communication terminal operating in the master unit mode via the first wireless network, and the extension group number of each slave unit specified by the slave unit information; In association with the extension number, register the mobile phone number of the parent device specified by the parent device information,
    When a call having the extension group number or the extension number as a destination number arrives, the call is relayed to the mobile phone number of the master unit corresponding to the extension group number or extension number System construction method.
JP2009002179A 2009-01-08 2009-01-08 Communication terminal, main apparatus, and parent-child telephone system construction method Active JP5239879B2 (en)

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