JP5425256B2 - Exchange, exchange method, program, and call system - Google Patents

Description

  The present invention relates to an exchange for making a simultaneous call in an extension telephone or the like and an exchange method thereof.

In Patent Literature 1, when an incoming call is received at one of a plurality of extension numbers included in the extension representative group, a special ringing tone is given to the called extension subscriber who has received an incoming call, and another extension in the group is also received. Have been disclosed to call all at once with a normal ringing tone.
In Patent Document 2, a single representative extension telephone number is also set for a plurality of telephones belonging to one group, and when an incoming call addressed to the representative telephone number is received, the incoming call processing to all telephones of that group is performed. It is disclosed to do.
Patent Document 3 discloses that all related parties belonging to the group are directly called by calling the group number from the outside line.
Patent Document 4 discloses that when there is a request for designating a group from an outside line and an extension line, the IP telephone terminal of the group is notified.

JP-A-5-344219 JP 2001-237897 A JP 2003-143303 A JP 2005-197861 A

However, in the techniques described in Patent Literatures 1 and 4, when a call is requested to any terminal belonging to the group and the terminal does not respond, the other terminal can respond, It is not assumed that the user of the terminal on the side calls a plurality of terminals belonging to the group on a group basis without specifying the terminal on the receiving side.
Patent Document 2 discloses that a plurality of telephones are grouped to set one extension representative number (paragraph 45). The extension representative number and each telephone belonging to the group are assigned. It is not related to the number.
For example, if all the extension numbers of terminals belonging to a certain group start with “123”, at least a common group identifier is assigned to each terminal belonging to the group. This is convenient in that it requires fewer identifiers. However, in Patent Document 2, such an advantage cannot be expected because the extension representative number and the number assigned to each telephone are not related as described above.
Patent Document 3 discloses that when an in-house emergency contact public number is received, the telephone numbers of the conference participating members belonging to the general call group number are taken out of the memory and all the members make a conference call ( Paragraph 11), there is no association between the telephone number that identifies one of the members of the group and this in-house emergency contact public number, and guidance for instructing member-designated dialing following the in-house emergency contact public number I needed it (paragraph 14).

  An object of the present invention is to make it possible to assign at least a common group identifier to each terminal belonging to a group and to call a plurality of terminals simultaneously.

  In order to solve the above-described problem, the exchange according to the present invention includes a detection unit that detects a transmission signal for requesting a call from a terminal on a transmission side to a terminal on a reception side, and the transmission signal detected by the detection unit, Extraction means for extracting a group identifier for identifying a group to which a plurality of terminals belong, a terminal identifier for identifying any of the terminals belonging to the group, and the group identifier and the terminal identifier extracted by the extraction means. When one terminal is identified, the one terminal is called as a receiving terminal, and when a plurality of terminals are identified by the group identifier and the terminal identifier, each of the plurality of terminals is called a receiving terminal. And calling means for calling as follows.

  Preferably, it comprises specifying means for specifying a location where the terminal is located, the extracting means extracts the group identifier, the terminal identifier, and a location identifier for identifying the location from the outgoing signal, and the calling means comprises: Of the terminals identified by the group identifier and the terminal identifier extracted by the extracting means, the location specified by the specifying means matches the location identified by the location identifier extracted by the extracting means. Call the terminal.

  Preferably, the location identifier is an identifier for identifying a location having a predetermined relationship with a location where the terminal on the transmission side is located, and the specifying means is a location on which the terminal on the transmission side is located. A first location and a second location where the terminal identified by the group identifier extracted by the extraction means and the terminal identifier are located are respectively specified, and the calling means is specified by the specifying means. When the second location is in the determined relationship with the first location, the terminal located at the second location may be called.

  In addition, the exchange method according to the present invention includes a detection step for detecting a call signal for requesting a call from a calling-side terminal to a receiving-side terminal, and a plurality of terminals from the calling signal detected by the detecting step. An extraction step of extracting a group identifier for identifying a group and a terminal identifier for identifying any of the terminals belonging to the group, and one terminal is identified by the group identifier and the terminal identifier extracted by the extraction step A call step for calling each of the plurality of terminals as a receiving terminal when the one terminal is called as a receiving terminal and a plurality of terminals are identified by the group identifier and the terminal identifier. It is characterized by comprising.

  Further, the program according to the present invention detects a computer provided in an exchange for calling a terminal, a detection means for detecting a call signal for requesting a call from a calling terminal to a receiving terminal, and the detection means detects the computer. Extraction means for extracting a group identifier for identifying a group to which a plurality of terminals belong and a terminal identifier for identifying any of the terminals belonging to the group from the transmission signal, the group identifier extracted by the extraction means, and When one terminal is identified by the terminal identifier, the one terminal is called as a receiving terminal, and when a plurality of terminals are identified by the group identifier and the terminal identifier, Is a program for functioning as calling means for calling as a terminal on the receiving side.

  In addition, the call system according to the present invention includes any one of the above-described exchanges, the caller terminal that transmits a call signal for requesting a call, and the callee that is called by the switch in response to the call signal. And a terminal.

  According to the present invention, at least a common group identifier can be assigned to each terminal belonging to a group, and a plurality of terminals can be called simultaneously.

It is a figure which shows the whole structure of a telephone call system. It is a figure which shows the structure of a terminal. It is a figure which shows the structure of a location register. It is a figure which shows an example of an area database. It is a figure which shows an example of an exchange database. It is a figure for demonstrating the relationship between a base station and an area. It is a figure which shows the structure of an exchange. It is a figure which shows an example of a number database. It is a figure which shows the functional structure of an exchange. It is a sequence diagram which shows the flow of the operation | movement of a terminal location registration. FIG. 5 is a sequence diagram showing a flow of operations until the originating exchange is notified of the terminating exchange. It is a sequence diagram which shows the flow of operation | movement until a speech path is formed. It is a figure which shows the structure of the exchange in a modification. It is a figure which shows an example of the place database in a modification. It is a figure which shows the functional structure of the exchange in a modification. It is a figure which shows an example of the place database in a modification. It is a figure which shows the structure of the terminal in a modification.

1. Embodiment 1-1. Overall Configuration of Call System FIG. 1 is a diagram showing the overall configuration of the call system 9. The call system 9 includes a switch 1, a location register 5, and a gateway switch 6 connected to the private line network 3. The call system 9 includes a base station 4 controlled by the exchange 1 and terminals 2 connected to each other via the base station 4, the exchange 1, and the private line network 3. The call system 9 includes a plurality of exchanges 1, a plurality of base stations 4, and a plurality of terminals 2 (2a, 2b,...). Further, the telephone system 9 includes a public line network 7 connected to the private line network 3 by the gateway exchange 6.

1-2. Terminal Configuration FIG. 2 is a diagram illustrating a configuration of the terminal 2. The terminal 2 is a telephone terminal that performs a telephone call via the dedicated line network 3, and is a mobile phone terminal or the like. The terminal 2 includes a control unit 21, a storage unit 22, a communication unit 23, an operation unit 24, a display unit 25, a sound collection unit 26, and a sound emission unit 27. The control unit 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU reads and executes a program stored in the ROM or the storage unit 22. Each part of the terminal 2 is controlled.

The storage unit 22 is a large-capacity storage unit such as a solid state drive (SSD) and stores a program read by the CPU.
The communication unit 23 is an interface that performs wireless communication with the base station 4.
The operation unit 24 includes a coordinate acquisition unit and operation buttons for inputting various instructions. The operation unit 24 receives an operation by a user and supplies a signal corresponding to the operation content to the control unit 21.

The display unit 25 is a display device that uses liquid crystal or the like, and displays an image in accordance with an instruction from the control unit 21.
The sound collection unit 26 includes a microphone 261 that generates a sound signal according to ambient sound, converts the generated sound signal into a digital signal, and supplies the digital signal to the control unit 21.
The sound emitting unit 27 includes a speaker 271 that generates sound. Under the control of the control unit 21, the instructed sound signal is converted into an analog signal, and the sound corresponding to the signal is generated by the speaker 271.

1-3. Configuration of Location Register FIG. 3 is a diagram showing a configuration of the location register 5. The location register 5 includes a control unit 51, a storage unit 52, and a communication unit 53.
The control unit 51 includes a CPU, a ROM, a RAM, and the like, and controls each unit of the location register 5 when the CPU reads out and executes a program stored in the ROM or the storage unit 52.
The communication unit 53 is an interface that communicates control information, audio signals, and the like with the exchange 1, the base station 4, the terminal 2, and the like via the dedicated line network 3.

  The storage unit 52 is a large-capacity storage unit such as a hard disk drive (HDD) and stores a program read by the CPU. In addition, the storage unit 52 stores an area database (hereinafter, “database” is expressed as DB in the figure) 521 and an exchange database 522.

  FIG. 4 is a diagram illustrating an example of the area database 521. As shown in FIG. 4, the area database 521 stores terminal names and area names in association with each other. The terminal name is identification information for identifying each terminal 2. The area name is identification information for identifying an area (location / range) where the terminal 2 is located. From this area database 521, it can be seen that the area where the terminal 2 identified by the terminal name is located is the area identified by the area name associated with the terminal name.

  FIG. 5 is a diagram illustrating an example of the exchange database 522. As shown in FIG. 5, the exchange database 522 stores the exchange name and the area name in association with each other. The exchange name is identification information for identifying the exchange 1. In the exchange database 522, the area name associated with the exchange name is the area name of the area including the base station 4 controlled by the exchange 1 identified by the exchange name.

  FIG. 6 is a diagram for explaining the relationship between the base station 4 and the area. A range where a radio wave of one base station 4 is received stronger than a radio wave of another base station 4, that is, a range covered by the base station 4 is called a cell. The location register 5 manages a plurality of cells as one area. For example, as shown in FIG. 6, the area Ra includes a cell of the base station 4a, and the area Rb includes a cell of the base station 4b. The reason for managing a plurality of cells as one area is that when one cell is managed as one area, the location must be registered in the location register 5 every time the terminal 2 enters or exits from each cell. This is because the communication load may increase. One cell may be managed as one area.

1-4. FIG. 7 is a diagram illustrating a configuration of the exchange 1. The exchange 1 is a computer having a function of an exchange, and performs a series of processes for realizing a call such as detection of a call, formation of a communication path, detection of an end call, and opening of the communication path. Further, the exchange 1 may perform calculation or authentication related to charging for each user. The exchange 1 includes a control unit 11, a storage unit 12, and a communication unit 13.
The control unit 11 includes a CPU, a ROM, a RAM, and the like, and controls each unit of the exchange 1 by the CPU reading and executing a program stored in the ROM or the storage unit 12.
The communication unit 13 is an interface that performs communication with the private line network 3 and the base station 4.

  The storage unit 12 is a large-capacity storage unit such as a hard disk drive, and stores a program read by the CPU. The storage unit 12 stores a number database 121.

  FIG. 8 is a diagram illustrating an example of the number database 121. The number database 121 has a group number list 1210 and a terminal number list 1211. The group number list 1210 is a list in which a group name, which is identification information for identifying a group to which a plurality of terminals 2 belong, and a number (hereinafter, group number) assigned to the group are described. Since the group number is associated with the group name, it functions as an identifier for identifying the group.

  The terminal number list 1211 is a list in which a terminal name that is identification information of the terminal 2 and a terminal number assigned to the terminal 2 in a group to which the terminal 2 belongs are described. One terminal number list 1211 is associated with each group name in the group number list 1210. Each terminal number list 1211 describes the terminal names of the terminals 2 belonging to the group identified by the associated group name. Therefore, the terminal number described in the terminal number list 1211 functions as a terminal identifier for identifying the terminal 2 belonging to the group by combining with the group number associated with the terminal number list 1211.

  The “number” constituting the group number and the terminal number includes numbers and symbols used in general telephones. For example, ten numbers from “0” to “9” and “*” , “#”, Which is a combination of two types of symbols, or a combination of these two types of symbols. Note that the types of codes included in the numbers are not limited to 12 types, and may be 11 types or less, or 13 types or more.

  The terminal 2 identified by combining the group number and the terminal number may be one or plural. For example, as shown in FIG. 8, in the terminal number list 1211 associated with the group name “G1”, the terminal numbers “1”, “2”, and “3” are the terminal names of one terminal 2, respectively. “T1”, “T2”, and “T3” are associated with each other. On the other hand, the terminal number “*” is associated with “T1, T2, T3,...”, That is, the terminal names of all terminals 2 belonging to this group.

  Therefore, when the user operates the keys or the like in the order of “4” → “5” → “6” → “2” in the terminal 2 on the calling side to specify the terminal 2 on the receiving side, for example, in the exchange 1 The first three characters “456” are interpreted as a group number, and the last one character “2” is interpreted as a terminal number. Then, the exchange 1 refers to the group number list 1210, identifies the group name “G1” from the group number “456”, refers to the terminal number list 1211 associated therewith, and identifies the terminal number “2”. The terminal name “T2” associated with is identified. That is, the exchange 1 identifies one terminal 2 whose terminal name is “T2” from the telephone number “4562”.

  On the other hand, when the user operates the keys in the order of “4” → “5” → “6” → “*” in the calling terminal 2 to specify the receiving terminal 2, the exchange 1 has the group number. The group name “G1” is identified from “456”, the terminal number list 1211 associated therewith is referred to, and the terminal names “T1, T2, T3,. Identify. That is, the exchange 1 has a plurality of terminals 2 whose terminal names are “T1”, “T2”, “T3”,..., That is, all terminals belonging to the group name “G1”, from the telephone number “456 *”. 2 is specified.

1-5. FIG. 9 is a diagram illustrating a functional configuration of the exchange 1. The control unit 11 of the exchange 1 functions as a detection unit 111, an extraction unit 112, and a calling unit 113.
The detection unit 111 detects a transmission signal for requesting a call from the terminal 2 on the transmission side (hereinafter referred to as the terminal 2a) to the terminal 2 on the reception side (hereinafter referred to as the terminal 2b) among the signals received by the communication unit 13.
The extraction unit 112 extracts the group number of the group to which the terminal 2b belongs and the terminal number in the group of the terminal 2b from the transmission signal detected by the detection unit 111. For example, the extraction unit 112 identifies the four keys operated by the user in order from the transmission signal detected by the detection unit 111, and the first three of the four keys are used as group numbers, and the last 1 Are extracted as terminal numbers.

  The calling unit 113 combines the group number and the terminal number extracted by the extracting unit 112 and searches the number database 121 for the terminal 2 corresponding to the combination. When one terminal 2 is identified as the terminal 2 corresponding to the above combination, the calling unit 113 calls the one terminal 2 as the terminal 2 on the receiving side. In addition, when a plurality of terminals 2 are identified as the terminals 2 corresponding to the above combinations, the calling unit 113 calls each of the plurality of terminals 2 as a receiving terminal.

1-6. Location Registration Operation FIG. 10 is a sequence diagram showing the flow of operations for registering the location of the terminal 2 (hereinafter, location registration) in the call system 9. In the following description, as shown in FIG. 1, the terminal 2a that is the originating terminal 2 is located in the cell of the base station 4a, and the terminal 2b that is the terminating terminal 2 is the base station 4b. Located in the cell. The base station 4a is controlled by the exchange 1a, and the base station 4b is controlled by the exchange 1b.

  Under the control of the exchange 1, the base station 4 periodically broadcasts (transmits) a signal including position information toward the cell of the base station 4 using a broadcast channel (hereinafter referred to as BCCH) (step). S101). The terminal 2 scans the BCCH during standby and receives a signal having the highest reception level. The terminal 2 extracts position information from the received signal, and collates the extracted position information with position information stored in the terminal 2 (step S102). Then, the terminal 2 determines whether or not the extracted position information is different from the stored position information (step S103).

  When the extracted position information is different from the stored position information (step S103; YES), the terminal 2 stores the extracted new position information (step S104), and uses its own identification information and the position information as a base. The information is transmitted to the location register 5 via the station 4 and the exchange 1 to request registration of the position information (step S105). The location register 5 registers (stores) the identification information and the position information transmitted from the terminal 2 in association with each other (step S106). On the other hand, when the extracted location information matches the stored location information (step S103; NO), the terminal 2 does not request location registration and waits for the location information to be notified from the base station 4.

1-7. Operation of Call Path Formation FIG. 11 is a sequence diagram showing the flow of operation until the originating exchange 1 is notified of the terminating exchange 1 in the call system 9.
When the user performs an operation for communicating with the terminal 2b on the terminal 2a, the terminal 2a accepts this operation (step S201), and performs a common bidirectional control on a transmission signal for requesting a call in accordance with the operation. Transmission is performed using a channel (Signal Control Channel: SCCH) (step S202). The operation for communication is, for example, an operation of inputting an extension number and pressing a call button.

  The base station 4a covering the cell in which the terminal 2a is located receives this outgoing signal, and the exchange 1a that controls this base station 4a detects this outgoing signal (step S203). The exchange 1a performs authentication based on the identification information of the terminal 2a included in the detected transmission signal (step S204). When the exchange 1a confirms that the terminal 2a is a legitimate terminal, the exchange 1a checks an empty information channel (Traffic Channel: TCH) used for communication and selects an unused (empty) TCH. (Step S205), and notifies the terminal 2a (Step S206). The terminal 2a switches the channel to be used to this notified TCH and continues communication thereafter.

  The exchange 1a extracts the group number and the terminal number from the detected transmission signal (step S207), and by combining these, the terminal 2a identifies the terminal 2b requesting the call (step S208). Then, the exchange 1a inquires the location register 5 about the position information of the identified terminal 2b (step S209). The location register 5 identifies the location information of the terminal 2b (step S210) and notifies the location information to the exchange 1a that made the inquiry (step S211). If there are a plurality of terminals 2b to be identified in step S208, the exchange 1a is notified of the position information for each of the plurality of terminals 2b.

FIG. 12 is a sequence diagram showing an operation flow until a call path is formed in the call system 9.
Based on the location information of the terminal 2b acquired from the location register 5, the exchange 1a specifies the exchange 1b that controls the base station 4b that covers the cell in which the terminal 2b is located, and requests the exchange 1b to call the terminal 2b. (Step S212). When there are a plurality of specified exchanges 1b, the exchange 1a requests each exchange 1b to call the terminal 2b.

The exchange 1b specifies an area including the cell in which the terminal 2b is located based on the location information of the terminal 2b, and simultaneously transmits a calling signal to all the base stations 4 in the area. That is, the exchange 1b transmits a paging signal for a general paging requesting communication with the terminal 2b to all the base stations 4 in the area (step S21 3 ). When receiving the call signal, the base station 4b corresponding to the cell in which the terminal 2b is located transmits a response signal in response to the call signal (step S214). Exchange 1b receives the response signal to cease transmission of the call signal (step S215).

Exchange 1b examines an empty T CH, select the TCH that is not being used (step S217), notifies the terminal 2b (step S218). The terminal 2b continues communication after switching to the TCH notified of the channel to be used. In addition, the terminal 2b sounds a ring tone (ringing sound) through the speaker 271 of the sound emitting unit 27 to notify the user that it is being called (step S219). Further, the exchange 1b notifies the terminal 2a that the terminal 2b is being called (step S219). When the terminal 2a receives this notification, the speaker 271 of the sound emitting unit 27 emits a ringback tone (other party ringing tone) to notify the user that the terminal 2b is being called (step S221).

  When the user of the terminal 2b performs a response operation on the terminal 2b, the terminal 2b receives this operation (step S222) and transmits a response signal corresponding to this operation to the exchange 1b (step S223). Thereby, a speech path is formed between the terminal 2a and the terminal 2b (step S224). Formation of a communication path between terminals means that terminals are connected by a communication path. By forming a communication path, a call between these terminals is established.

  As described above, in the call system 9, when one terminal is identified by combining the group number and the terminal number extracted from the outgoing signal, the exchange 1 can be used as a terminal on the receiving side. Call as 2. Further, when a plurality of terminals are identified by combining the group number and the terminal number extracted from the outgoing signal, the exchange 1 calls each of the plurality of terminals 2 as a terminal 2 on the receiving side. Therefore, the user of the terminal 2 can call one or a plurality of terminals 2 belonging to the group identified by the group number by using a number including both the group number and the terminal number. That is, in the call system 9, at least a common group identifier can be assigned to each terminal 2 belonging to the group, and a plurality of terminals 2 can be called simultaneously.

2. Modification The above is the description of the embodiment, but the contents of this embodiment can be modified as follows. Further, the following modifications may be combined.
2-1. Order and number of group number and terminal number In the above-described embodiment, the extraction unit 112 specifies four keys operated by the user in order from the transmission signal detected by the detection unit 111, and among these four keys, Although the first three are extracted as group numbers and the last one is extracted as a terminal number, the order and number of group numbers and terminal numbers are not limited to this. For example, the extraction unit 112 may identify five keys operated by the user in order from the transmission signal, and extract the first two as terminal numbers and the last three as group numbers. The extraction unit 112 may extract the first, third, and fifth keys as group numbers and the second and fourth keys as terminal numbers.

2-2. Location where the called terminal is located In the above-described embodiment, regardless of the location where the called terminal 2 is located, the exchange 1 is identified by combining the group number and the terminal number extracted from the outgoing signal. Although all the terminals 2 have been called as receiving terminals, whether or not to call the terminal 2 as a receiving terminal may be determined according to the location where the identified terminal 2 is located.

FIG. 13 is a diagram showing the configuration of the exchange 1 in this modification. In this modification, the storage unit 12 of the exchange 1 stores a location database 122 in addition to the number database 121.
FIG. 14 is a diagram showing an example of the location database 122 in this modification. The location database 122 stores location numbers and area names in association with each other. The place number is a number assigned to the area identified by the area name. That is, the location database 122 can identify the location number assigned to the area identified by the area name.

FIG. 15 is a diagram showing a functional configuration of the exchange 1 in this modification. The control unit 11 of the exchange 1 in this modification functions as a detection unit 111, an extraction unit 112, a calling unit 113, and a specifying unit 114.
The detection unit 111 detects a transmission signal that requests a call from the terminal 2 a that is the terminal 2 on the transmission side to the terminal 2 b that is the terminal 2 on the reception side, among the signals received by the communication unit 13.
The extraction unit 112 specifies, for example, five keys operated in order by the user of the terminal 2a from the transmission signal detected by the detection unit 111. Of the five keys, the first one is extracted as a location number, the following three as group numbers, and the last one as a terminal number.

  The identification unit 114 identifies the terminal 2b based on the group number and terminal number extracted by the extraction unit 112 as follows. The specifying unit 114 refers to the number database 121 of the storage unit 12 and searches the group number list 1210 for the group number described above, and specifies the group name corresponding to the group number. Then, the specifying unit 114 searches the above-described terminal number from the terminal number list 1211 associated with this group name, and specifies the terminal name corresponding to this terminal number. The identification unit 114 identifies the terminal 2b by this terminal name.

  Further, the specifying unit 114 connects to the location register 5 via the communication unit 13 and the leased line network 3 and acquires the area name associated with the terminal name in the area database 521. The specifying unit 114 specifies the area identified by the area name as a place where the terminal 2b is located. In addition, when there are a plurality of terminals 2b identified by the group number and the terminal number, the specifying unit 114 specifies the location where each terminal 2b is located.

  The calling unit 113 searches the location database 122 of the storage unit 12 for the location number extracted from the outgoing signal by the extraction unit 112, and specifies the area name corresponding to this location number. Then, the specified area name is compared with the area name acquired from the location register 5 by the specifying unit 114, and when they match, the terminal 2b described above is called. That is, the calling unit 113 has a location identified by the identifying unit 114 and a location identified by the location number extracted by the extracting unit 112 among the terminals 2 identified by the group number and the terminal number extracted by the extracting unit 112. The matching terminal 2 is called as the receiving terminal 2b.

For example, in the terminal 2a, when the user designates the receiving terminal 2b by operating the keys in the order of “7” → “4” → “5” → “6” → “*”, the exchange 1 The location number “7”, the group number “456”, and the terminal number “*” are extracted from the signal.
The exchange 1 refers to the group number list 1210, identifies the group name “G1” from the group number “456”, refers to the terminal number list 1211 associated therewith, and associates it with the terminal number “*”. The terminal names “T1, T2, T3,. That is, the exchange 1 specifies a plurality of terminals 2 whose terminal names are “T1”, “T2”, “T3”,..., That is, all terminals 2 belonging to the group name “G1” from the transmission signal.

  The exchange 1 then inquires the location register 5 and specifies the areas where all the specified terminals 2 are located. The exchange 1 refers to the location database 122 and compares the area name associated with the location number “7” with the area name of the location where each terminal 2 described above is located. Call. For example, the area name associated with the place number “7” in the place database 122 shown in FIG. 14 is “Ra”. As shown in FIG. 4, the terminal 2 having the terminal name “T1” and the terminal 2 having the terminal name “T3” are located in the area indicated by the area name “Ra”. When the terminal 2 that is “T2” is located in the area indicated by the area name “Rb”, the exchange 1 calls the terminal 2 that has the terminal name “T1” and the terminal name “T3”. A call is not made to the terminal 2 with the name “T2”.

  With the above configuration, the call system 9 designates a group and an area from the terminal 2 on the caller side, and calls only the terminal 2 located in that area among the terminals 2 belonging to the group. be able to. Therefore, for example, the call system 9 in this modification can call only those who are in the conference room among members of a certain group.

2-3. Relationship between the location where the terminal on the calling side is located and the location where the terminal on the receiving side is located In the above-described modification, the location database 122 stores the location number and the area name in association with each other. A “location condition” indicating the relationship between the location where the terminal 2 is located and the location where the terminal 2 on the receiving side is located may be stored in association with the location number. FIG. 16 is a diagram showing an example of the location database 122 in this modification. In this location database 122, the location number “*” is associated with the location condition “same location”, the location number “#” is associated with the location condition “different location”, and the location number “0”. Is associated with the place condition “next place”. Here, the “next place” means “next” in the order when the order is assigned to each area in advance, for example, the first floor → the second floor → the third floor →... Refers to the corresponding area.

  In this case, the extraction unit 112 realized by the control unit 11 of the exchange 1 extracts the location number, the group number, and the terminal number from the transmission signal detected by the detection unit 111, and also transmits the terminal 2 of the transmission side. The terminal name is extracted as identification information. Then, the specifying unit 114 realized by the control unit 11 specifies the terminal name of the terminal 2 on the receiving side based on the group number and the terminal number extracted by the extracting unit 112, and receives the terminal 2 on the calling side from the location register 5. The location where the terminal 2 is located is specified. Then, the calling unit 113 realized by the control unit 11 is configured so that the relationship between the location where the calling-side terminal 2 specified by the specifying unit 114 and the location where the receiving-side terminal 2 is located is the location number described above. If the relationship is indicated by the location condition associated with, the terminal 2 on the receiving side is called.

  For example, in the terminal 2a which is the terminal 2 on the transmission side, the user operates the keys in the order of “*” → “4” → “5” → “6” → “*”, and the terminal which is the terminal 2 on the reception side When 2b is designated, the exchange 1 extracts the location number “*”, the group number “456”, and the terminal number “*” from the transmission signal. Then, the exchange 1 uses the group number “456” and the terminal number “*” to assign the terminal names “T1”, “T2”, “T3”,..., That is, the group name “G1”. All the terminals 2 to which it belongs are specified. The exchange 1 inquires the location register 5 to identify the area (second location) where all the identified terminals 2 are located.

  Further, the exchange 1 extracts the terminal name of the terminal 2a from the outgoing signal, and inquires the location register 5 to identify the area (first place) where the terminal 2a is located. For example, when the terminal name of the terminal 2a is “T11” and the area database 521 shown in FIG. 4 is stored in the storage unit 52 of the location register 5, the area (first place) where the terminal 2a is located is This is the area indicated by the area name “Ra”.

  Then, the location condition associated with the location number “*” in the location database 122 shown in FIG. 16 is “same location”. In other words, when the area (second place) where the identified terminal 2 on the called side is located is in the “same place” relationship with the area (first place) where the terminal 2 a is located, the exchange 1 Call terminal 2. That is, the terminal 2 located in the same place as the area where the terminal 2a is located is called out of the specified terminals 2 on the receiving side.

  Therefore, the terminal 2 with the terminal name “T1” and the terminal 2 with the terminal name “T3” are the same as the area where the terminal 2a with the terminal name “T11” is located, as shown in FIG. Since it is located in the area of “Ra”, a call is made. On the other hand, the terminal 2 with the terminal name “T2” located in the area indicated by the area name “Rb” is not called.

  With the above configuration, the call system 9 designates a group and a location condition from the terminal 2 on the calling side, and among the terminals 2 belonging to the group, the area where the terminal 2 on the calling side is located Can be called only to the terminal 2 located in an area where the relationship of Therefore, the call system 9 in this modification can call, for example, only those who are gathered in the same room as the user of the terminal 2 on the calling side among members of a certain group.

2-4. Positioning In the above-described modification, the exchange 1 specifies the location where the terminal 2 on the transmission side or the reception side is located by an inquiry to the location register 5, but it may be specified by other methods.
FIG. 17 is a diagram showing a configuration of the terminal 2 in this modification. The terminal 2 includes a control unit 21, a storage unit 22, a communication unit 23, an operation unit 24, a display unit 25, a sound collection unit 26, and a sound emission unit 27 illustrated in FIG. 2, and a positioning unit 28.
The positioning unit 28 measures the position of the terminal 2 based on a GPS (Global Positioning System) positioning method. And the terminal 2 includes the positioning information which shows the position of the terminal 2 which the positioning part 28 measured in the transmission signal transmitted according to a user's operation. The positioning information is data including numbers representing latitude and longitude, for example.

  The exchange 1a, which is the originating exchange 1, extracts the location number, group number, and terminal number from the outgoing signal transmitted by the terminal 2a, which is the originating terminal 2, and uses the group number and terminal number to extract the destination number. The terminal 2b which is the terminal 2 is identified. Further, the exchange 1a extracts positioning information indicating the position of the terminal 2a from the transmission signal described above. The exchange 1a inquires the location register 5 for the area where the identified terminal 2b is located, and causes the exchange 1b associated with this area to make a general call. Then, the exchange 1a receives a response signal from the terminal 2b via the leased line network 3. This response signal includes the positioning information measured by the positioning unit 28 of the terminal 2b, and the exchange 1a extracts the positioning information from the response signal. Then, the exchange 1a compares the position (location) where the terminal 2a is located with the position (location) where the terminal 2b is located based on the two pieces of extracted positioning information, and these are associated with the location number. It is determined whether or not the location condition is satisfied. When each of these positions satisfies the above place condition, the exchange 1a causes the exchange 1b to call the terminal 2b.

  With the above configuration, the call system 9 can specify the location where the terminal 2 on the receiving side is located under conditions different from the area of the cell of the base station 4 as a unit. Therefore, the call system 9 in this modification, for example, calls only those members of a certain group who are inside a circle having a radius of a distance determined around the position of the terminal 2 on the transmission side. It is possible.

2-5. Number Representation Method In the above-described embodiment, the telephone number is interpreted as a different type of number depending on the appearing position and the fixed length, but may be interpreted by other methods. For example, the telephone number may be interpreted as a plurality of types of separators by characters constituting the telephone number.

  For example, when there is a telephone number represented by a character string “10 # 456 *”, the exchange 1 checks the telephone numbers in order from the first character. Then, when “#” as a delimiter (delimiter) first appears, the exchange 1 interprets the character before “#” as a location number. Then, the exchange 1 may interpret the first three characters of the subsequent character strings as a group number and the last one character as a terminal number. In this case, the location number is represented by variable length data up to the appearance of the delimiter, and the other numbers are represented by the same fixed length data as in the above-described embodiment.

  When there is a telephone number represented by the character string “21034561 *”, the exchange 1 checks the telephone number in order from the first character. The exchange 1 interprets the first character as the number of digits used for the location number. In this case, since the first character is “2”, the exchange 1 interprets the subsequent two-digit number as a location number. That is, “10” in which the second character and the third character are combined in order is interpreted as the location number. In this case, the location number, the group number, and the terminal number all have leading fixed-length characters, and each number is represented by variable-length data in which each data length is represented by the preceding fixed-length characters. Is expressed.

  Next, the exchange 1 interprets one character arranged next to the last character interpreted as the location number as the number of digits used for the group number. In this case, since the fourth character arranged next to the third character is “3”, the exchange 1 interprets the subsequent three-digit number as a group number. That is, “456”, which is a combination of the fifth to seventh characters in order, is interpreted as a group number.

  Then, the exchange 1 interprets one character arranged next to the last character interpreted as the group number as the number of digits used for the terminal number. In this case, since the eighth character arranged next to the seventh character is “1”, the exchange 1 interprets the subsequent one-digit number as a terminal number. That is, the ninth character “*” is interpreted as the terminal number.

  Various numbers may be represented by other variable length expressions. For example, when a terminal number is represented by a fixed length expression, if the number of digits is fixed to one digit, it cannot be assigned to a terminal 2 that exceeds one character type. In the above-described example, since one character is represented by 12 types of codes, the maximum number of terminals 2 belonging to the same group is 12. On the other hand, when “9” is a special character, “0” to “8” represent nine terminals 2, “90” to “98” represent another nine terminals 2, and “990” to “990” “998” can represent another nine terminals 2. By expressing at least a part of various numbers as variable-length data, the number of objects indicated by the numbers can be increased without limitation.

2-6. The program executed by the control unit 11 of the program exchange 1 is a recording medium readable by a computer device, such as a magnetic recording medium such as a magnetic tape or a magnetic disk, an optical recording medium such as an optical disk, a magneto-optical recording medium, or a semiconductor memory. Can be provided in a stored state. It is also possible to download this program via a network such as the Internet. Note that various devices other than the CPU may be applied as the control means exemplified by the control unit 11. For example, a dedicated processor or the like is used.

2-7. Terminal

  In the above-described embodiment, the terminal 2 communicates with the base station 4 wirelessly and is connected to the exchange 1 on the private line network 3 via the base station 4, but is connected to the exchange 1 by wire. It may be a so-called fixed telephone.

2-8. Call after answering In the above-described embodiment, there is no mention of after a response signal is transmitted from the terminal 2 on the receiving side to form a communication path. When a call is requested by designating a plurality of calls 2, when the first one of the callee terminals 2 requested to call the call responds, the exchange 1 on the callee side sends another caller terminal 2 on the other callee side. You may cancel the call to. In addition, even after some of the terminals 2 on the incoming side requested to make a call, the exchange 1 on the incoming side may continue calling the other terminal 2 on the incoming side that has not responded. . In this case, the call may be continued until there is a response from all the designated terminals 2.

  When a plurality of terminals 2 are designated and a call is requested, as described above, when the first one of the designated terminals 2 responds, the terminal number when the call to the other terminal 2 is canceled, The number database 121 may distinguish and store the terminal number when the call to the other terminal 2 is continued even after some of the designated terminals 2 respond. For example, when dials and buttons are designated in the order of “456 *”, the exchange 1 stops calling when one of the terminals 2 belonging to the group having the group number “456” responds. On the other hand, when dials and buttons are designated in the order of “456 #”, the exchange 1 makes a call to the terminal 2 that has not responded until all the terminals 2 belonging to the group having the group number “456” respond. It may be continued.

2-9. Public line network In the above-described embodiment, the private line network 3 is provided with the gateway switch 6, and the gateway switch 6 is connected to the public line network 7. However, the terminal 2 on the calling side is connected to the public line network 7 and the gateway switch. 6, a call may be requested to the terminal 2 on the receiving side. In this case, an outside line telephone number including a group of numbers for identifying the private line network 3 in the public line network 7 and a number for identifying each terminal 2 in the private line network 3 such as the group number and the terminal number described above. In combination, the caller terminal 2 may request a call. Further, the call system 9 may not be connected to the public line network 7. In this case, it is only necessary to form a call between the terminals 2 within the range connected by the leased line network 3, and the gateway exchange 6 may be omitted.

DESCRIPTION OF SYMBOLS 1 (1a, 1b) ... Switch, 11 ... Control part, 111 ... Detection part, 112 ... Extraction part, 113 ... Calling part, 12 ... Storage part, 121 ... Number database, 1210 ... Group number list, 1211 ... Terminal number list , 122 ... Location database, 13 ... Communication section, 2 (2a, 2b) ... Terminal, 21 ... Control section, 22 ... Storage section, 23 ... Communication section, 24 ... Operation section, 25 ... Display section, 26 ... Sound collection section 261, microphone, 27 sound emitting unit, 271 speaker, 28 positioning unit, 3 dedicated network, 4 (4a, 4b) base station, 5 location register, 51 control unit, 52 storage unit 521 ... Area database, 522 ... Switch database, 53 ... Communication unit, 6 ... Gateway switch, 7 ... Public line network, 9 ... Call system

Claims (6)

A detecting means for detecting a call signal for requesting a call from a caller terminal to a callee terminal;
Extraction means for extracting a group identifier for identifying a group to which a plurality of terminals belong, and a terminal identifier for identifying any of the terminals belonging to the group, from the transmission signal detected by the detection means;
When one terminal is identified by the group identifier and the terminal identifier extracted by the extracting means, the one terminal is called as a terminating terminal, and a plurality of terminals are identified by the group identifier and the terminal identifier. And a call means for calling each of the plurality of terminals as a callee terminal. A means for identifying the location of the terminal,
The extraction means extracts the group identifier, the terminal identifier, and a location identifier for identifying a location from the outgoing signal,
The calling means is identified by the location specified by the specifying means and the location identifier extracted by the extracting means among the terminals identified by the group identifier and the terminal identifier extracted by the extracting means. 2. The exchange according to claim 1, wherein a terminal having the same location is called. The location identifier is an identifier for identifying a location having a determined relationship with a location where the terminal on the calling side is located,
The specifying means includes a first place where the terminal on the calling side is located, and a second place where the terminal identified by the group identifier extracted by the extracting means and the terminal identifier is located; Identify each
The calling means calls the terminal located at the second location when the second location specified by the specifying means is in the determined relationship with the first location. Item 3. The exchange according to item 2. A detection step of detecting a call signal for requesting a call from the calling terminal to the called terminal;
An extraction step for extracting a group identifier for identifying a group to which a plurality of terminals belong, and a terminal identifier for identifying any of the terminals belonging to the group, from the transmission signal detected by the detection step;
When one terminal is identified by the group identifier and the terminal identifier extracted in the extraction step, the one terminal is called as a terminating terminal, and a plurality of terminals are identified by the group identifier and the terminal identifier. And a calling step for calling each of the plurality of terminals as a receiving terminal. A computer installed in the exchange that calls the terminal
A detecting means for detecting a call signal for requesting a call from a caller terminal to a callee terminal;
Extraction means for extracting a group identifier for identifying a group to which a plurality of terminals belong, and a terminal identifier for identifying any of the terminals belonging to the group, from the transmission signal detected by the detection means;
When one terminal is identified by the group identifier and the terminal identifier extracted by the extracting means, the one terminal is called as a terminating terminal, and a plurality of terminals are identified by the group identifier and the terminal identifier. A program for causing each of the plurality of terminals to function as calling means for calling each of the plurality of terminals as a receiving terminal. The exchange according to any one of claims 1 to 3,
A terminal on the calling side that transmits a call signal for requesting a call;
A call system comprising: the called terminal called by the exchange in response to the outgoing signal.

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