JP6013991B2 - Call control apparatus and method for identifying outside line number - Google Patents

Description

The present invention relates to a call control device for realizing a call between terminals in which an external line number used for an external line call and an extension number used for an internal line call are set, and a method for specifying the external line number .

  There is a technique for realizing a voice call between a plurality of terminals connected to a network using a call control device (see, for example, Patent Document 1). In the technique described in Patent Document 1, the call control device manages data in which an extension number is associated with an outside line number. When the user dials the extension number, the call control device converts the dialed extension number into an outside line number and uses the data in which the extension number and the outside line number are associated to connect to the destination.

  Patent Document 1 describes an example in which an extension number is composed of a base number to which a terminal belongs and a terminal number at the base. When an extension number is composed of a base number and a terminal number and the terminal is connected to the call control device via the IP-PBX, the extension number included in the data stored in the call control device uses the base number. In such a case, a method has been proposed in which the call control device searches for a matching base number from the extension number included in the managed data while sequentially deleting the end of the number dialed by the user. By using this method, extension connections between bases are possible even when the extension number setting method differs for each base.

Japanese Patent No. 4249122

  However, as described in Patent Document 1, in the method of searching by sequentially deleting the end of the dialed number, when there is a duplicate number (for example, “44” and “440”) in front of the base number, There is a possibility that a wrong number is converted without being able to distinguish between them, and connection cannot be made properly.

  In addition, there is a problem that the number of processing processes increases because it is necessary to repeatedly retrieve data while sequentially deleting the end of the number in order to extract the matching base number.

  In view of the above problems, an object of the present invention is to realize an appropriate connection with a simple processing process in a call control device.

In order to achieve the above object, a call control device according to the present invention is a call control device that realizes a call between terminals in which an external number used for an external call and an extension number used for an internal call are set. the and external number assigned to the terminal, and the group number that identifies the group to which the terminal belongs, and bases numbers associated with the group number, the extension number of the terminal, including the base number and the terminal number hope and storage device for storing correspondence data associating the specific data for extracting the site number, and extension of the originating terminal transmitted from the originating terminal, the originating terminal the call the specific de receiving means for receiving a signal including a extension number of the called destination terminal, which extracts the specific data associated with external number originating terminal from the correspondence data, extracted for Analyzing means for extracting a site number from the extension number of the destination terminal by using the data, site number of terminals of the extracted destination in the analyzing means, in said correspondence data, associated with the same said group number in determining means and said judging means for determining whether or not to have, a destination terminal bases numbers, when it is determined to be associated with the same of the group numbers, associated with the bases numbers outside line A specifying unit that extracts a number from the correspondence data and specifies the number as an outside line number of a destination terminal;

  According to the present invention, an appropriate connection can be realized by a simple processing process in a call control device.

FIG. 1 is a schematic diagram illustrating a network to which a call control device according to an embodiment is connected. FIG. 2 is a block diagram illustrating the call control device according to the embodiment. FIG. 3 shows an example of data used by the call control device (FIG. 3A) and an example of data to be compared with this (FIG. 3B). FIG. 4 is a flowchart for explaining the call control method. FIG. 5 is an example of data transmitted and received by the call control device.

  Hereinafter, a call control device and a call control method according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals and description thereof is omitted.

  The call control device according to the embodiment is a device that establishes an extension call between terminals registered in advance when a wide area extension service is realized on a network. Note that the call control device according to the embodiment can establish not only an extension call but also an outside call using a public telephone network, but the process executed by the call control device for the outside call is the same as the conventional one. . Therefore, hereinafter, only the configuration of the call control device for the extension call and the processing to be executed will be described.

  As shown in FIG. 1, the call control device 1 according to the embodiment is connected to a plurality of terminals 2 a to 2 d via a network 4. Here, the terminals 2a to 2d are telephones, facsimiles, or the like that transmit / receive data to / from other terminals. For example, these terminals 2a to 2d are each connected to the network 4 via an access line such as a wide area LAN line, and can exchange packets with each other. The network 4 is made up of, for example, an IP-VPN network or a public IP network.

  In FIG. 1, the terminals 2b to 2d are connected via exchange devices 3a and 3b. The exchange apparatuses 3a and 3b are, for example, IP-PBXs, and are apparatuses that relay data transmission / reception with the network 4 and the terminals 2b, 2c, or 2d. Hereinafter, as shown in FIG. 1, a system in which the call control device 1 is connected to the terminals 2 a to 2 d and the exchange devices 3 a and 3 b via the network 4 will be described as a call control system 5.

  When the extension number of another terminal 2a to 2d is dialed from any of the terminals 2a to 2d registered in the call control system 5, the call control device 1 is connected to the other terminal 2a to 2d corresponding to the dialed extension number. The 2d outside line number is specified, and the specified outside line number is used to connect to the other terminals 2a to 2d. Here, the extension number is a number defined in the call control system 5, and the outside line number is a number defined on the public telephone network.

  In such a call control system 5, for example, a base is provided for each management unit such as a different area such as a head office and a branch office or a plurality of departments, and base numbers are set and managed for these bases. In the example shown in FIG. 1, the number of bases is three, but the number of bases is not limited. Further, the number of terminals existing at the base is not limited.

  The extension number used in the call control system 5 includes a “base number” and a “terminal number” that identifies the terminal. The number of digits of the extension number is not limited, but the number of digits of either the base number or the terminal number is fixed. In the example of the extension number described with reference to FIG. 1, the number of digits of the base number is not determined, but the number of digits of the terminal number is fixed to “3”.

  For example, in the example of FIG. 1, the terminal 2 a belongs to the base having the base number “33”, and the terminal number is “330”. Therefore, “33330” is assigned as an extension number to the terminal 2a. Also, an external line number “05011112222” is assigned to this base.

  The terminal 2b belongs to the base having the base number “44”, and the extension number “44010” is given thereto. In this case, the terminal number is “010”. Also, an external line number “05050223333” is assigned to this base. Here, the exchange device 3a is arranged at the base “44”, and when the terminal 2b realizes a call with another terminal, it is realized via the exchange device 3a.

  The terminals 2c and 2d belong to the site with the site number “440”, and are assigned extension numbers “440234” and “440567”, respectively. In this case, the terminal number of the terminal 2c is “234”, and the terminal number of the terminal 2d is “567”. In addition, an outside line number “050444445555” is assigned to this base. Here, the switching device 3b is arranged at the base “440”, and when the terminals 2c and 2d realize a call with another terminal, the switching device 3b is realized.

  Although FIG. 1 shows an example in which one external number corresponds to one base, one external number may correspond to a plurality of bases.

  As shown in FIG. 2, the call control device 1 includes a receiving unit 101, an analyzing unit 102, a determining unit 103, a specifying unit 104, a generating unit 105, and a transmitting unit 106. The call control device 1 is, for example, an information processing device including a CPU 10, a storage device 11, a communication interface 12, an input unit 13, an output unit 14, etc., and a call control program P stored in the storage device 11 is executed. Thus, the CPU 10 executes processing as the receiving unit 101, the analyzing unit 102, the determining unit 103, the specifying unit 104, the generating unit 105, and the transmitting unit 106. Further, the storage device 11 of the call control device 1 stores correspondence data D in addition to the call control program P as shown in FIG.

  As shown in FIG. 3A, the correspondence data D includes an “external line number” assigned to a terminal registered in the call control system 5, a “group number” that identifies a group to which the terminal belongs, It includes a “base number” that identifies the base to which the terminal belongs and an “analysis method” that analyzes an extension number composed of the base number and the terminal number. “Analysis method” includes “fixed part” that specifies whether the fixed part of the extension number is the base number or the terminal number, and the “number of digits” of the part specified by the fixed part. Is included.

  For example, in the example shown in FIG. 3A, it can be seen that the group number of the terminal to which the outside line number “05011112222” is assigned is “1” and the base number is “33”. It can also be seen that the portion of the extension number of this terminal with a fixed number of digits is the “terminal number”. For example, when the extension number is “33330”, the number of digits of the terminal number is a fixed part, and the number of digits of the terminal number is three. Therefore, before the last three digits (330) of “33330” are removed. An analysis result is obtained that the two-digit “33” is the base number.

Note that the example of the correspondence data D shown in FIG. 3 is an example that includes only data relating to the group 1, but the correspondence data D may include data relating to a plurality of groups. When the correspondence data D includes data related to a plurality of groups, the same analysis method is set for the same group.

  The receiving means 101 receives the first request signal transmitted from the source terminal when the terminals 2a to 2d (source terminal) make an extension dial to another terminal (destination terminal). The first request signal is a signal for requesting an extension call by the terminal, and includes the “external line number” of the caller terminal and the “extension number” of the callee terminal.

  The analysis unit 102 analyzes the first request signal received by the reception unit 101. Specifically, the correspondence data D stored in the storage device 11 is read, and from this correspondence data D, the “group number” associated with the “external line number” included in the first request signal is used as the group number of the terminal of the transmission source. Extract as Further, the analysis unit 102 extracts the “analysis method” associated with the “external line number” as an analysis method for analyzing the base number of this group. Further, the analysis unit 102 analyzes the base number of the destination terminal from the “extension number” included in the first request signal, using the extracted analysis method.

  In the correspondence data D, the determination unit 103 determines whether or not the base number associated with the group number of the source terminal analyzed by the analysis unit 102 includes the base number of the destination terminal analyzed by the analysis unit 102. Determine whether. If it is determined by the determination means 103 that the base number is included, an extension call is established by connecting the source terminal and the destination terminal in the subsequent processing, but the base number is not included. If determined, the extension call is not established.

  When the determination unit 103 determines that the site number is included, the specifying unit 104 uses the correspondence data D and the analysis result of the analysis unit 102 to specify the external line number of the terminal of the destination. Specifically, the “external line number” associated with the “base number” of the called party analyzed by the analyzing unit 102 is extracted from the corresponding data D, and the extracted outside line number is specified as the outside line number of the terminal of the called party.

  The generating unit 105 generates the second request signal using the external line number generated by the specifying unit 104. The second request signal is a signal for requesting the destination terminal to make a call with the caller, and includes the “external number” of the caller terminal and the “external number” and “extension number” of the callee terminal. It is out.

  The transmission unit 106 transmits the second request signal generated by the generation unit 105. This second request signal is received by the destination terminal identified by the “external line number” included in the second request signal or the switching device at the base to which the destination terminal belongs, and then the source terminal and the destination A call with the terminal is realized.

  In addition, when the determination unit 103 determines that the base number is not included, the transmission unit 106 transmits a call rejection signal notifying that the extension call is not established to the terminal of the transmission source. For example, the call rejection signal is voice data stored in the storage device 11 in advance, or a control signal for disconnecting the connection of the caller.

  The flow of processing in the call control device 1 will be described using the flowchart shown in FIG. First, the receiving means 101 receives a first request signal including “destination extension number”, “source extension number”, and “source extension number” as shown in FIG. 5A (S1). . The example shown in FIG. 5A is an example including “440234” as the destination extension number, “33330” as the extension number of the caller, and “05011112222” as the extension number of the caller. Further, the first request signal shown in FIG. 5A is an example described using the SIP RFC, the TTC standard, or the like.

The analysis unit 102 extracts a group associated with the outside line number of the caller (S2). Moreover, the analysis means 102 extracts the analysis method linked | related with the sender's outside line number (S3). For example, as shown in FIG. 5 (a), when the first request signal including the caller's external line number “05011112222” is received, the group number associated with “05011112222” from the corresponding data D shown in FIG. 3 (a). “1” is extracted, and the fixed part “terminal number” and the number of digits “3”, which are analysis methods, are extracted.

  Subsequently, the analysis unit 102 extracts the base number from the extension number of the incoming call destination using the analysis method extracted in step S3 (S4). For example, as extracted from FIG. 3 (a), when the number of digits of the terminal number included in the extension number is fixed and the number of digits of the terminal number is 3, the analyzing means 102 uses the extension number “ The base number “440” excluding the last three digits, which is the terminal number, is extracted from “440234”.

  Thereafter, the determination unit 103 determines whether or not the base number of the destination terminal extracted in step S4 is included in the base number associated with the group number of the source terminal extracted in step S2 in the correspondence data D. Determine (S5). As a result, it is possible to determine whether or not the source terminal and the destination terminal are in the same group.

  When the determination unit 103 determines that the base number is included (YES in step S5), the specifying unit 104 specifies the external line number of the destination terminal (S6). Specifically, the specifying unit 104 extracts an external line number associated with the base number extracted in step S4 from the correspondence data D, and specifies the external line number as the destination. For example, in FIG. 3A, when the terminal number extracted in step S4 is “440”, “050444445555” is extracted as the outside line number of the destination.

Thereafter, the generation unit 105 generates a second request signal including “ destination extension number”, “ destination extension number”, “source extension number”, and “source extension number” (S7). For example, an example of the second request signal shown in FIG. 5B or 5C is a signal generated corresponding to the first request signal formed in FIG. The signals shown in FIGS. 5B and 5C are also examples described using the SIP RFC, the TTC standard, or the like.

  When the generation unit 105 generates the second request signal, the transmission unit 106 transmits the generated second request signal to the destination terminal or the switching device connected to the destination terminal (S8). This establishes a call between the caller terminal and the callee terminal.

  If the determination unit 103 determines that the site number is not included (NO in step S5), the transmission unit 106 transmits a call rejection signal (S9).

  For example, as shown in FIG. 3B, data in which an outside line number and an extension number are associated with each other is used, and the tail is sequentially deleted from the extension number of the destination, and the extension number included in this data is used. When searching for an outside line number, the search process is repeated a plurality of times until a matching number is searched, and an incorrect outside line number may be searched. On the other hand, in the call control device 1 according to the above-described embodiment, the correspondence data D is associated with an analysis method including an outside line number, a group number, a base number, a fixed part, and the number of digits. It is possible to convert the extension number dialed by the user from the extension number to the outside line number, facilitate the conversion process without repeating the search process a plurality of times, and search for the correct outside line number. It becomes possible.

  Further, when using the call control device 1 according to the embodiment, in each group, since the number of digits of one of the base number or the terminal number can be set freely, the setting of the base number and the setting of the terminal number are flexible. Can be done.

  Furthermore, when the call control apparatus 1 according to the embodiment is used, the connection data D needs to be updated even when the terminal connected to the network 4 is changed because the base number is used as a key. Absent.

  As mentioned above, although this invention was demonstrated in detail using embodiment, this invention is not limited to embodiment described in this specification. The scope of the present invention is determined by the description of the claims and the scope equivalent to the description of the claims.

1 Call control device 10 CPU
DESCRIPTION OF SYMBOLS 101 Receiving means 102 Analyzing means 103 Judging means 104 Identification means 105 Generation means 106 Transmission means 11 Storage device D Corresponding data P Call control program 12 Communication interface 13 Input means 14 Output means 2a-2d Terminals 3a, 3b Switching device 4 Network 5 Call Control system

Claims (4)

A call control device that realizes a call between terminals in which an external number used for an external call and an extension number used for an internal call are set,
And external number assigned to the terminal, and the group number that identifies the group to which the terminal belongs, and bases numbers associated with the group number, the site from an extension of the terminal, including the base number and the terminal number a storage device for storing correspondence data associating the specific data for extracting numbers,
Receiving means for receiving a signal including the external line number of the caller terminal transmitted from the caller terminal and the extension number of the callee terminal that the caller terminal wishes to call;
Analyzing means for extracting the specific data associated with the external line number of the source terminal from the correspondence data, and extracting a base number from the extension number of the destination terminal using the extracted specific data ;
A determination unit that determines whether the base number of the destination terminal extracted by the analysis unit is associated with the same group number in the corresponding data;
Wherein the determination means, the destination terminal bases numbers, when it is determined to be associated with the same of the group number, extracts the external telephone number associated with the bases numbers from the corresponding data, the destination Identifying means for identifying the external number of the terminal of
A call control device comprising: The specific data may include a fixed portion of a predetermined digit extension number represents whether or site number is a terminal number and the digits of their,
If the analyzing means, when the fixing portion represents the site number, the number represented by digits from the previous extension of the incoming destination terminal and the site number, which the fixed part represents a terminal number, call The call control apparatus according to claim 1, wherein a number obtained by removing the number of digits after the extension number of the previous terminal is used as the base number. A method for identifying an external line number performed by a call control device ,
A reception step of receiving a signal including an external line number of the caller terminal transmitted from the caller terminal and an extension number of a callee terminal that the caller terminal wishes to call;
And external number assigned to the terminal, and the group number that identifies the group to which the terminal belongs, and bases numbers associated with the group number, the site from an extension of the terminal, including the base number and the terminal number from the corresponding data associated with the particular data to extract numbers, the associated and external number originating terminal extracts specified data, extracted using said specific data of incoming destination terminal extension An analysis step for extracting the site number from the number ;
A determination step of determining whether the base number of the destination terminal extracted in the analysis step is associated with the same group number in the corresponding data;
The determination at step, the destination terminal bases numbers, when it is determined to be associated with the same of the group number, extracts the external telephone number that is associated with the bases numbers from the corresponding data, the destination Specific step of identifying as an external number of the terminal of,
A method for identifying an outside line number characterized by comprising : The specific data may include a fixed portion of a predetermined digit of the extension number of the originating terminal indicating whether the or the site number is a terminal number and the digits of their,
Wherein the analysis steps, when the fixed portion represents the site number, the number represented by digits from the previous extension of the incoming destination terminal and the site number, if the fixed part represents a terminal number, 4. The method for identifying an outside line number according to claim 3, wherein a number obtained by removing the number of digits after the extension number of the terminal of the destination is used as the base number.

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