JP2006210991A - Exchange controller and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an exchange controller and program operable even when the same extension number is given to telephone terminals belonging to different groups. <P>SOLUTION: The exchange controller 1 extracts a special number of a called party side group indicative of a group to which a called terminal belongs and an extension number in the called party side group from incoming information included in an extension call request message and references an extension management table on the basis of the special number of the called party side group and the extension number in the called party side group to thereby specify a called party side terminal address. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an IP telephone technology, and more particularly to an extension control technology used in an exchange control apparatus that manages a plurality of telephone terminals in a group and controls an extension call between these telephone terminals.

In a telephone system comprising a plurality of telephone terminals and an exchange control apparatus that connects these telephone terminals and accommodates one or more telephone lines, the exchange control apparatus is provided on the basis of an extension number previously assigned to each telephone terminal. Extension calls between telephone terminals are realized.
For example, in a button telephone apparatus representing a telephone system, a telephone line such as an analog telephone line or an IP telephone line is accommodated in a main apparatus corresponding to the control apparatus, and a plurality of extension telephone terminals connected to the main apparatus are previously stored. Based on the assigned extension number, an extension call between telephone terminals via the main unit is realized.

  Conventionally, in such a telephone system, when there are a large number of telephone terminals connected to the exchange control device, an extension control technique has been proposed in which these telephone terminals are divided into several groups for operation management (for example, patents). Reference 1 etc.). In this method, a unique extension number is assigned to each telephone terminal in advance, and the group to which these telephone terminals belong is managed by the switching control device, and call control such as calling / holding or holding is performed for each group. It is a thing. As a result, the telephone system can be shared by a plurality of tenants, offices, and departments.

The applicant has not yet found prior art documents related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in this specification.
JP-A-7-212807 JP-A-7-162913 JP-A-6-1554938

  In recent years, for example, in a tenant building, a large-scale telephone system that controls a large number of telephone terminals with a single switching control device is used. In particular, a telephone system using IP telephone technology is SIP (Session Initiation Protocol). Since the number of telephone terminals that can be connected to an exchange control device such as a server can be easily increased, sharing between different groups such as tenants, offices, and departments is expected. In such a case, there may be a desire to increase the degree of freedom for assigning extension numbers to telephone terminals and assign the same extension number to telephone terminals belonging to different groups.

However, in the conventional extension control technique described above, in order to individually call a telephone terminal belonging to an arbitrary group, it is necessary to give each telephone terminal a unique extension number in the telephone system. Therefore, even if the telephone terminals are in different groups, the same extension number cannot be assigned, and there is a problem in that the degree of freedom for assigning the extension number to the telephone terminal is small.
An object of the present invention is to provide an exchange control apparatus and program that can be operated even when telephone terminals belonging to different groups are assigned the same extension number.

  In order to achieve such an object, an exchange control device according to the present invention includes a plurality of telephone terminals each belonging to an arbitrary group and assigned a unique group extension number within the group, and an extension network. An exchange control device used in a telephone system comprising an exchange control device for connecting these telephone terminals and accommodating a telephone line, and for each telephone terminal, the terminal address of the telephone terminal on the extension network and the telephone terminal Included in an extension call request message from any calling terminal and a storage unit for storing an extension management table in which a set of a group special number consisting of a dial number indicating the group to which the call belongs and a group extension number of the telephone terminal is described By referring to the extension management table based on the called party group special number and the called group extension number. And a control unit for acquiring the callee terminal address of the callee terminal to transmit a line paging message.

At this time, the calling party group special number of the calling terminal obtained by referring to the extension management table based on the calling terminal address included in the extension call request message is referred to the extension management table based on the calling terminal address. The calling side information generating means for generating the calling side information indicating the calling side terminal by adding to the calling party extension number of the calling side terminal obtained in the above is further provided. The generated caller information may be notified to the called terminal by an extension call message.
In addition, the storage unit stores a group management table indicating the relationship of the groups to which each telephone terminal belongs, and the calling side information generating means generates the group management table based on the group to which the calling terminal belongs and the group to which the called terminal belongs. The necessity of adding the calling group special number may be determined based on the belonging relationship between the calling terminal and the called terminal obtained by reference.

  The program according to the present invention connects a plurality of telephone terminals, each belonging to an arbitrary group and having a unique group extension number within the group, to the telephone terminals via the extension network and calling. A group comprising a terminal address of a telephone terminal on the extension network for each telephone terminal and a dial number indicating a group to which the telephone terminal belongs to a computer of the switching control apparatus used in a telephone system including a switching control apparatus that accommodates a line. A step of storing an extension management table in which a set of a special number and a group extension number of the telephone terminal is described in a storage unit; and a called party group special number and a called party included in an extension call request message from an arbitrary calling terminal By referring to the extension management table based on the group extension number, the extension call It is obtained so as to perform the acquiring-side terminal address of the callee terminal to transmit a message.

  At this time, the calling party group special number of the calling terminal obtained by referring to the extension management table based on the calling terminal address included in the extension call request message is referred to the extension management table based on the calling terminal address. Generated by the calling side information generation step in the calling side information generation step for generating the calling side information indicating the calling side terminal by being added to the calling party extension number of the calling side terminal obtained in the above and the call control step. And the step of notifying the called terminal information to the called terminal by an extension call message may be further executed.

  And a group management table based on the group to which the calling terminal belongs and the group to which the called terminal belongs in the step of storing in the storage unit a group management table indicating the relationship of the groups to which each telephone terminal belongs The step of determining whether or not the calling party group special number needs to be added may be further executed based on the belonging relationship between the calling terminal and the called terminal obtained by referring to FIG.

  According to the present invention, in the exchange control device, the called party group special number indicating the group to which the called terminal belongs and the called group extension number are extracted from the called side information included in the extension call request message, and the called group Since the destination terminal address is specified by referring to the extension management table based on the special number and the extension number of the called party group, the called party group special number of the group to which the called terminal belongs when the extension is called is included in the called party group. By adding and specifying the extension number, the telephone terminals belonging to different groups can be individually called by extension, and even when the same extension number is assigned to the telephone terminals belonging to different groups, the telephone terminal can be operated.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a telephone system according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the telephone system according to the first embodiment of the present invention.
The telephone system 10 includes a plurality of telephone terminals 21A, 21B, 22A, 22B, 31A, 31B, 32A, and 32B, and these telephone terminals are connected via an extension network 4 and include an analog telephone line, an IP telephone line, and the like. The switching control apparatus 1 accommodates one or more telephone lines 5.

The exchange control apparatus 1 manages these telephone terminals as a group for each tenant and business office, and each telephone terminal is assigned a unique extension number within each group.
Among these, the telephone terminals 21A and 21B belong to a group called the establishment A (21) of the tenant X (2), and the telephone terminals 22A and 22B belong to a group called the establishment B (22) of the tenant X (2). Belongs to. Further, the telephone terminals 31A and 31B belong to a group called the business office C (31) of the tenant Y (3), and the telephone terminals 32A and 32B belong to a group called the business office D (32) of the tenant Y (3). belong to.

  In this embodiment, an extension number called a special number is assigned to a group such as a tenant or a business office, and the exchange control device uses the called side information included in the extension call request message from any calling terminal to the called side. The called party group special number and the called group extension number are extracted, and the called terminal address of the called terminal is identified from the called group special number and the called group extension number. An extension call message for notifying an extension call from the calling terminal is transmitted to the destination.

In the following, a case where the telephone line 5 is an IP telephone line, each telephone terminal has an IP telephone function, and the exchange control device 1 is composed of an SIP server using SIP (Session Initiation Protocol) as a call control protocol will be described as an example. To do.
At this time, each telephone terminal is grouped for each tenant and each business office in the tenant, and a unique group extension number is assigned in advance for each telephone terminal in the group to which each telephone terminal belongs. . In addition, as a group special number, each tenant is given a tenant special number indicating a unique extension number in the telephone system, and each establishment is assigned a unique establishment number indicating a unique extension number within the tenant to which each tenant belongs. It is assumed that

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

  As shown in FIG. 2, the exchange control device 1 is a server device having a communication function and an information processing function, and includes a line interface unit (hereinafter referred to as a line I / F unit) 11, an extension interface unit (hereinafter referred to as an extension I). / F unit) 12, a storage unit 13, and a control unit 14 are provided.

The line I / F unit 11 is composed of a circuit unit for connecting the call line 5 of the telephone network 6 and performs line control such as incoming call detection, outgoing call, and call by controlling the call line 5 based on a predetermined protocol. It has a function.
The extension I / F unit 12 includes a circuit unit that performs data transmission with the telephone terminals 21A, 21B, 22A, 22B, 31A, 31B, 32A, and 32B via the extension network 4, and performs call control between these telephone terminals. It has a function to exchange various data such as messages and voice data.

The storage unit 13 includes a storage device such as a memory or a hard disk, and has a function of storing various processing information and programs 13P used for various processing such as call control processing in the control unit 14.
The program 13P is written to the storage unit 13 from another device when the exchange control device 1 is manufactured, or an input / output interface provided in the exchange control device 1 such as the line I / F unit 11 or the extension I / F unit 12 is used. To the storage unit 13 from an external device or a recording medium.

Main processing information stored in the storage unit 13 includes call control information 13A and an extension management table 13B.
The call control information 13A includes state information indicating the states of the telephone line 5 and the telephone terminals 21A, 21B, 22A, 22B, 31A, 31B, 32A, and 32B, and setting information indicating various setting contents. 14 and updated as necessary.

The extension management table 13B is information indicating the relationship between the terminal address of each telephone terminal on the extension network 4 and the group extension number. FIG. 3 is a configuration example of an extension management table used in the exchange control device according to the first embodiment of the present invention.
In this extension management table 13B, for each telephone terminal, a unique terminal address assigned to the telephone terminal in the extension network 4, the tenant special number (group special number) of the tenant to which the telephone terminal belongs, and the telephone terminal belong The office special number (group special number) of the office and the group extension number of the telephone terminal are registered as a set.

The control unit 14 includes a microprocessor such as a CPU and its peripheral circuits, and reads and executes the program 13P in the storage unit 13 to realize various functional units by cooperating the hardware and the program 13P. It is a functional part.
As main functional means realized by the control unit 14, there are a call control means 14A and a called side information analysis means 14B.

The call control means 14A connects the communication path using the communication line 5 by exchanging various data with the telephone network 6 and further with the other party telephone terminal (not shown) via the line I / F unit 11 and the communication line 5. And a function of performing disconnection and a function of controlling each telephone terminal by exchanging various control messages with each telephone terminal via the extension I / F unit 12 and the extension network 4.
The called side information analysis means 14B analyzes the called side information indicating the called side terminal included in the extension call request message from an arbitrary telephone terminal, the tenant special number of the tenant to which the called side terminal belongs, and the called side It has a function of extracting a business office special number of a business office to which the terminal belongs.

[Operation of First Embodiment]
Next, the operation of the telephone system according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a flowchart showing an extension call process in the exchange control device used in the telephone system according to the first embodiment of the present invention. FIG. 5 is an explanatory diagram showing called side special number extraction processing in the exchange control device used in the telephone system according to the first embodiment of the present invention. FIG. 6 is a sequence diagram showing an extension call operation in the telephone system according to the first embodiment of the present invention.

First, an extension call process in the exchange control device 1 will be described with reference to FIG.
When calling another telephone terminal from an arbitrary telephone terminal via the extension network 4, an extension call request message including the called side information indicating the desired called terminal and the calling side information indicating the calling terminal is sent to the calling terminal. To the exchange control device 1 via the extension network 4.
At this time, when a called terminal belonging to a group different from the calling terminal is called, the tenant special number of the tenant to which the called terminal belongs and the business office special number of the business office are added to the extension number of the called terminal.

The control unit 14 of the exchange control device 1 receives the extension call request message from the calling terminal via the extension I / F unit 12, and starts the extension call process of FIG. 4 by the call control means 14A.
The call control means 14A first acquires the calling group extension number by referring to the extension management table 13B of the storage unit 13 based on the calling party information included in the extension call request message (step 100). At this time, the terminal address of the calling side terminal is used as the calling side information, and the call control means 14A acquires the group extension number paired with the calling side terminal address from the extension management table 13B. It should be the calling party information that should be notified.

Next, the call control means 14A uses the called side information analyzing means 14B to obtain the called side group special number of the called side terminal, that is, the called side tenant special number and the called side office special number, from the called side information included in the extension call request message. The called group extension number is extracted (step 101). At this time, the called side group extension number to which the called side group special number is added is used as the called side information, and the called side information analyzing means 14B separates the called side group special number and the called side group extension number. And extract.
Subsequently, the call control means 14A refers to the extension management table 13B of the storage unit 13 based on the destination group special number and the destination group extension number, and acquires the terminal address of the destination terminal (step 102). At this time, the call control means 14A obtains the terminal address paired with the destination group special number and the destination group extension number from the extension management table 13B and sets it as the destination terminal address.

  Then, an extension call message including the calling party group extension number obtained in step 100 as the calling party information and the called terminal address obtained in step 102 as the called party information is generated (step 103). This message is transmitted to the destination terminal via the extension I / F unit 12 and the extension network 4 (step 104), and a series of extension call processing is completed.

Next, with reference to FIG. 5, the called side special number extraction process in the exchange control device will be described.
In step 101 of the extension call processing described above, the call control means 14A extracts the called party group special number from the called side information included in the extension call request message by the called side information analysis means 14B as shown in FIG.
At this time, the called party information is linked in the order of “tenant special number” + “business establishment special number” + “group extension number”, and each digit of the tenant special number, establishment special number, and group extension number is displayed. It is assumed that the number is fixed to “1”, “1”, “4” in advance.

According to such a configuration, the sixth digit from the end of the callee information 300 corresponds to the callee tenant special number 301, the fifth digit from the end of the callee information 300 corresponds to the callee site special code 302, The last four digits of the side extension number 300 correspond to the destination group extension number 303.
Therefore, when “2111010” is input as the callee information 300, the callee information analysis unit 14B acquires the sixth digit from the end of the callee information “211010” as the callee tenant special number “2”, The fifth digit from the end of the information “211010” is acquired as the called-side establishment special number “1”, and the last four digits of the called-side information “211010” are acquired as the called group extension number “1010”.

  If the calling terminal and the called terminal belong to the same tenant, the tenant special number can be omitted. Similarly, if the calling terminal and the called terminal belong to the same office, the tenant special number and the office If the special number can be omitted, the number of digits of the group special number added at the beginning of the called party information will change, but the group special number and group extension number are specified by the number of digits from the end of the called party information. Thus, even when the group special number is omitted, the group special number and the group extension number can be obtained accurately. The group special number may be added to the end of the group extension number. In this case, the group special number and the group extension number can be accurately obtained by specifying the number of digits from the head of the called side information.

Next, an extension call operation in the telephone system according to the first embodiment of the present invention will be described with reference to FIG.
In the following, a case where the calling terminal 21B belonging to the office C (31) of the tenant Y (3) is called by extension from the calling terminal 21A belonging to the office A (21) of the tenant X (2) will be described as an example. To do.

  First, in the calling terminal 21A, an extension call operation was performed in which the called tenant special number “2”, the called site special number “1”, and the called group extension number “1010” of the called terminal 31B were specified. In this case (step 200), the extension call request message including the called side information “211010” in which the group special number and the group extension number of the called side terminal 31B are connected as the called side information from the calling side terminal 21A is sent to the extension network 4 Is transmitted to the exchange control device 1 via the terminal (step 201).

The control unit 14 of the exchange control device 1 receives the extension call request message from the calling terminal 21A via the extension I / F unit 12, and executes the extension call control process of FIG. 4 by the call control means 14A. At this time, the called party information analyzing means 14B extracts the called party group special number and the called party group extension number from the called party information “21110” of the extension call request message (step 202). The terminal address “ZZ06YYCC02” of the receiving terminal is specified from the side group extension number (step 203).
Then, the call control means 14A receives an extension call message including the calling party information consisting of the calling party group extension number and the called party information consisting of the called terminal address via the extension I / F unit 12 and the extension network 4. It is transmitted to the terminal 31B (step 204).

The called terminal 31B receives the extension call message from the exchange control device 1 and starts the extension incoming call display such as the transmission of the ringing tone and the display of the incoming call lamp (step 205), and is included in the extension call message. The calling side information and the incoming time are recorded as history information (step 206).
Thereafter, in response to a response operation by the user (step 210), a response message is transmitted from the destination terminal 31B to the exchange control device 1 (step 211).

  This response message is transferred from the switching control device 1 to the calling terminal 21A via the extension network 4 (step 212), and a response confirmation message corresponding thereto is exchanged from the calling terminal 21A via the extension network 4. The call is transferred to the apparatus 1 (step 213), transferred from the exchange control apparatus 1 to the called terminal 31B (step 214), and the extension call is made via the extension network 4 between the calling terminal 21A and the called terminal 31B. Is started (step 215).

  As described above, in the present embodiment, the exchange control device 1 extracts the called group special number indicating the group to which the called terminal belongs and the called group extension number from the called side information included in the extension call request message. Since the destination terminal address is specified by referring to the extension management table based on the destination group special number and the destination group extension number, the telephone terminals belonging to different groups can be individually called by extension. Even when telephone terminals belonging to different groups are assigned the same extension number, they can be operated.

  In addition, as group special numbers for specifying the group to which the called terminal belongs, information such as alphabets and binary numbers that cannot be expressed by dial numbers may be used, but as described above, dial numbers “0” to “9” are used as group special numbers. Therefore, it is not necessary to prepare a special button for selecting a group, and a general telephone terminal having a dial key can easily input the group special number of the called terminal.

  The specific algorithm for extracting the called party group special number and the called group extension number from the called party information of the extension call request message in the called party information analysis means 14B is not limited to the above-described example. The called party group special number and the called group extension number may be extracted using other algorithms.

[Second Embodiment]
Next, the telephone system according to the second embodiment of the present invention will be described in detail with reference to FIG. FIG. 7 is a block diagram showing the configuration of the exchange control device used in the telephone system according to the second embodiment of the present invention, where the same or equivalent parts as those in FIG. .

  In the first embodiment described above, in the extension call message from the exchange control device 1 to the called terminal, the calling group extension number of the calling terminal is notified as the calling side information, and this is recorded in the history of the called terminal. The case of recording as information has been described as an example. Therefore, by using this history information, it is possible to make a return extension call to the calling terminal without operating and inputting the extension number of the calling terminal.

  However, when the calling side terminal and the called side terminal belong to different groups, the calling side terminal cannot be called accurately only by the calling group extension number. For example, when there is an extension call from the calling terminal 21A in FIG. 1 to the called terminal 31B, and then a return extension call is made from the called terminal 31B to the calling terminal 21A based on the history information, the calling information is sent as history information. The calling terminal 21A cannot be called from the called terminal 31B beyond the group only by the calling group extension number “1000” of the calling terminal, and in this example, the same group as the called terminal 31B, that is, the same office is used. The telephone terminal 31A having the extension number “1000” is called up in C (31).

  In the present embodiment, in order to enable the return extension call to the telephone terminals belonging to such different groups, when the extension call message is transmitted from the exchange control device 1 to the destination terminal, the calling side information is sent as the calling side information. The calling party group special number of the group to which the terminal belongs is added to the calling group extension number and notified.

The exchange control device 1 used in the telephone system according to the present embodiment is compared with the exchange control device 1 (see FIG. 2) of the first embodiment described above, and the calling side information generating means 14C is added to the control unit 14. The group management table 13 </ b> C is added to the storage unit 13.
When the calling side information generating means 14C transmits an extension call message from the exchange control device 1 to the called side terminal, the calling side information in which the calling side group special number of the group to which the calling side terminal belongs is added to the calling side group extension number. It has the function to generate.

The group management table 13 </ b> C is information indicating the relationship (hierarchical structure) of each group set in the telephone system 10. FIG. 8 is a configuration example of a group management table used in the exchange control device according to the second embodiment of the present invention.
In the group management table 13C, the correspondence relationship between the tenant special number and the business establishment special number is registered.
Other configurations of the telephone system 10 and the exchange control device 1 according to the present embodiment are the same as those of the first embodiment described above, and detailed description thereof is omitted here.

[Operation of Second Embodiment]
Next, the operation of the telephone system according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a flowchart showing an extension call process in the exchange control device used in the telephone system according to the second embodiment of the present invention. FIG. 10 is an explanatory diagram showing a calling party information generation process in the exchange control device used in the telephone system according to the second embodiment of the present invention. FIG. 11 is an explanatory diagram showing a calling party information generation process in the exchange control device used in the telephone system according to the second embodiment of the present invention. FIG. 12 is a sequence diagram showing an extension call operation in the telephone system according to the second embodiment of the present invention.

First, an extension call process in the exchange control device 1 will be described with reference to FIG. In FIG. 9, the same or equivalent parts as those in FIG.
The call control means 14A of the exchange control device 1 executes steps 100 to 102 equivalent to those in FIG. 4 in the extension call processing in FIG.
Next, the calling party group special number is acquired by referring to the extension management table 13B of the storage unit 13 based on the calling party information included in the extension call request message (step 110). Based on the above, the group management table 13C of the storage unit 13 is referred to and the affiliation relationship between the calling terminal and the called terminal is confirmed (step 111). Based on the obtained affiliation relationship, the calling side information generating means 14C generates calling side information in which the calling group extension number is added to the calling group extension number (step 112).

  Subsequently, the call control means 14A generates an extension call request message including the above-mentioned calling party information and including the called terminal address as the called party information (step 103), and this message is transmitted to the extension I / F unit 12 and the extension. Transmission is made to the destination terminal via the network 4 (step 104), and a series of extension call processing ends.

Next, with reference to FIG. 10, the calling side information generation process in the exchange control device 1 will be described.
In step 112 of FIG. 9, the calling side information generation unit 14C performs a calling side information generation process as shown in FIG.
First, based on the belonging relationship between the calling terminal and the called terminal confirmed in step 111 of FIG. 9, it is determined whether the calling terminal and the receiving terminal belong to the same tenant (step 120).
Here, if both belong to different tenants (step 120: NO), since the offices to which they belong are also different, the calling tenant special number and the calling party special number are assigned to the calling group extension number. Then, new calling side information is generated (step 121), and a series of calling side information generation processing ends.

On the other hand, if both belong to the same tenant (step 120: YES), based on the belonging relationship between the calling terminal and the called terminal confirmed in step 111 in FIG. It is determined whether it belongs (step 122).
Here, if both belong to different establishments (step 122: NO), only the establishment special number is assigned to the calling group extension number to generate new calling party information (step 123). The side information generation process is terminated.
If both belong to the same tenant and office (step 122: YES), the calling group extension number is set as new calling side information (step 124), and the series of calling side information generation processing ends.

Therefore, when an extension call is made from the calling terminal 21A to the called terminal 31B, as shown in FIG. 11, the calling terminal address “ZZ01XXAA01” of the calling terminal 21A is added to the extension call request message from the calling terminal 21A (310). Is included as originating information. At this time, the exchange control device 1 refers to the extension management table 13B, and the calling tenant special number “1” (311), the calling site special number “1” (312) corresponding to the calling terminal address, The side group extension number “1000” (313) is acquired.
At this time, since the calling-side tenant special number “1” of the calling-side terminal 21A and the called-side tenant special number “2” of the called-side terminal 31B are different, the calling-side group extension number “1000” is assigned to the calling-side tenant special number “1”. ”And the calling site special number“ 1 ”are added to the calling group extension number“ 1000 ”, and the calling side information“ 111000 ”(314) is generated.

Next, with reference to FIG. 12, an extension call operation in the telephone system according to the second embodiment of the present invention will be described. In FIG. 12, the same or equivalent parts as those in FIG.
In the following, a case where the calling terminal 21B belonging to the office C (31) of the tenant Y (3) is called by extension from the calling terminal 21A belonging to the office A (21) of the tenant X (2) will be described as an example. To do.

  First, in the calling terminal 21A, an extension call operation was performed in which the called tenant special number “2”, the called site special number “1”, and the called group extension number “1010” of the called terminal 31B were specified. In this case (step 200), an extension call request message including the called side information “211010” obtained by connecting the called side group special number and the called side group extension number of the called side terminal 31B from the calling side terminal 21A via the extension network 4 Is transmitted to the exchange control device 1 (step 201).

The control unit 14 of the exchange control device 1 receives the extension call request message from the calling terminal 21A via the extension I / F unit 12, and executes the extension call control process of FIG. 4 by the call control means 14A. At this time, the called party information analyzing means 14B extracts the called party group special number and the called party group extension number from the called party information “21110” of the extension call request message (step 202). The terminal address “ZZ06YYCC02” of the receiving terminal is specified from the side group extension number (step 203).
At this time, the calling side information generation unit 14C performs the above-described calling side information generation processing of FIG. 10, and the calling side extension number “1000” and the calling side tenant special number “1” of the calling side terminal 21A are added to the calling side. The office special number “1” is added (step 220).

Then, the call control means 14A sends an extension call message including the calling side information “111000” and the called side information consisting of the called side terminal address to the receiving terminal 31B via the extension I / F unit 12 and the extension network 4. Is transmitted (step 204).
The called terminal 31 receives the extension call message from the exchange control device 1 and starts the extension incoming call display such as the transmission of a ringtone or the display of the incoming call lamp (step 205), and is included in the extension call message. The calling side information “111000” and its incoming time are recorded as history information (step 206).

As a result, the calling party extension number “111000” to which the calling party tenant special number and the calling party office special number of the calling terminal are assigned is recorded in the history information as the calling party information. Even when a return extension call is made from the destination terminal 31B to the origination terminal 21A using the side information, the origination terminal 21A of a different group is different depending on the origination tenant special number and the origination office special number of the origination information. Called correctly.
The processing after step 210 is the same as that in FIG. 6 described above, and a description thereof is omitted here.

  As described above, in the present embodiment, the exchange control device 1 is provided with the calling side information generation means 14C, and when the extension call message is transmitted from the exchange control device 1 to the destination terminal, Since the calling group special number of the group to which it belongs is added to the calling group extension number and notified, it is possible to make a return call to a telephone terminal belonging to a different group using the calling party information recorded as the incoming call history Become.

[Extension of each embodiment]
In each of the above embodiments, the extension configuration as shown in FIG. 1, that is, a configuration in which two tenants each have two establishments and two telephone terminals are installed at each establishment has been described as an example. However, the present invention is not limited to this. For example, offices and departments may be used as a group, and each embodiment can be applied in the same manner as described above, even if the group hierarchy is increased and the extension configuration includes tenants, offices, and departments. The effect is obtained.
The number of digits of the group special number assigned to each group is not limited to one digit, and a plurality of digits may be used.

In each of the embodiments, the case where the telephone line 5 is an IP telephone line, each telephone terminal has an IP telephone function, and the exchange control device 1 includes a SIP server has been described as an example. However, the present invention is not limited thereto. However, it may be a general button telephone device.
In each embodiment, a telephone system used in a tenant building or the like has been described as an example. However, the extension network 4 is configured by a large-scale IP network such as a VPN, and the exchange control device 1 is arranged at each base. A service providing system that manages installed telephone terminals of general users as a group may be constructed.

It is a block diagram which shows the structure of the telephone system concerning the 1st Embodiment of this invention. It is a block diagram which shows the structure of the exchange control apparatus used with the telephone system concerning the 1st Embodiment of this invention. It is an example of a structure of the extension management table used with the exchange control apparatus concerning the 1st Embodiment of this invention. It is a flowchart which shows the extension call process in the exchange control apparatus used with the telephone system concerning the 1st Embodiment of this invention. It is explanatory drawing which shows the called side special number extraction process in the exchange control apparatus used with the telephone system concerning the 1st Embodiment of this invention. It is a sequence diagram which shows the extension call operation | movement in the telephone system concerning the 1st Embodiment of this invention. It is a block diagram which shows the structure of the exchange control apparatus used with the telephone system concerning the 2nd Embodiment of this invention. It is a structural example of the group management table used with the exchange control apparatus concerning the 2nd Embodiment of this invention. It is a flowchart which shows the extension call process in the exchange control apparatus used with the telephone system concerning the 2nd Embodiment of this invention. It is a flowchart which shows the calling side information generation process in the exchange control apparatus used with the telephone system concerning the 2nd Embodiment of this invention. It is explanatory drawing which shows the calling party information generation process in the exchange control apparatus used with the telephone system concerning the 2nd Embodiment of this invention. It is a sequence diagram which shows the extension call operation | movement in the telephone system concerning the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Telephone system, 1 ... Exchange control apparatus, 11 ... Line I / F part, 12 ... Extension I / F part, 13 ... Memory | storage part, 13A ... Call control information, 13B ... Extension management table, 13C ... Group management table, DESCRIPTION OF SYMBOLS 14 ... Control part, 14A ... Call control means, 14B ... Arrival side information analysis means, 14C ... Originating side information generation means, 2 ... Tenant X, 21 ... Establishment A, 22 ... Establishment B, 21A, 21B, 22A, 22B ... telephone terminal, 3 ... tenant Y, 31 ... establishment C, 32 ... establishment D, 31A, 31B, 32A, 32B ... telephone terminal, 4 ... extension network, 5 ... call line, 6 ... telephone network.

Claims (6)

From a plurality of telephone terminals each belonging to an arbitrary group and having a unique group extension number within the group, and an exchange control apparatus for connecting the telephone terminals via the extension network and accommodating the telephone line An exchange control device used in a telephone system comprising:
An extension management table in which a set of a group special number consisting of a terminal address of the telephone terminal on the extension network and a dial number indicating a group to which the telephone terminal belongs and a group extension number of the telephone terminal is described for each telephone terminal A storage unit for storing
By referring to the extension management table based on the destination group special number and the destination group extension number included in the extension call request message from any calling terminal, the destination terminal to which the extension call message should be transmitted And a control unit that obtains a destination terminal address. In the exchange control device according to claim 1,
The calling party group special number of the calling terminal obtained by referring to the extension management table based on the calling terminal address included in the extension call request message, and the extension management table based on the calling terminal address. A calling side information generating means for generating calling side information indicating the calling side terminal by adding to the calling group extension number of the calling side terminal obtained by reference;
The call control means notifies the callee information generated by the caller information generation means to the callee terminal using the extension call message. In the exchange control device according to claim 2,
The storage unit stores a group management table indicating a relationship of groups to which each telephone terminal belongs,
The calling side information generating means is a grouping relationship between the calling terminal and the called terminal obtained by referring to the group management table based on a group to which the calling terminal belongs and a group to which the called terminal belongs. And determining whether or not the calling party group special number needs to be added. From a plurality of telephone terminals each belonging to an arbitrary group and having a unique group extension number within the group, and an exchange control apparatus for connecting the telephone terminals via the extension network and accommodating the telephone line In the computer of the exchange control device used in the telephone system
An extension management table in which a set of a group special number consisting of a terminal address of the telephone terminal on the extension network and a dial number indicating a group to which the telephone terminal belongs and a group extension number of the telephone terminal is described for each telephone terminal Storing in the storage unit;
By referring to the extension management table based on the destination group special number and the destination group extension number included in the extension call request message from any calling terminal, the destination terminal to which the extension call message should be transmitted A program for executing a step of obtaining a destination terminal address. The program according to claim 4, wherein
The calling party group special number of the calling terminal obtained by referring to the extension management table based on the calling terminal address included in the extension call request message, and the extension management table based on the calling terminal address. A calling side information generation step of generating calling side information indicating the calling side terminal by adding to the calling party group extension number of the calling side terminal obtained by reference;
A program for further executing, in the call control step, the step of notifying the callee side terminal of the caller side information generated in the caller side information generating step by the extension call message. The program according to claim 5,
Storing a group management table indicating a relationship of groups to which each telephone terminal belongs in the storage unit;
The affiliation relationship between the calling terminal and the called terminal obtained by referring to the group management table based on the group to which the calling terminal belongs and the group to which the called terminal belongs in the calling side information generation step And a step of determining whether or not the calling party group special number needs to be added based on the program.

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