JP5979717B2 - IP Centrex system, server, communication control method, and communication control program - Google Patents

Description

  The present invention relates to a communication control technique in an IP Centrex system.

  In a general company telephone system using an existing telephone network, an extension telephone network and an outside line are connected to a PBX (Private Branch eXchange) and controlled. Functions such as extension calls, representative calls, hold, and transfer are provided by PBX. On the other hand, in recent years, IP (Internet Protocol) telephones using the Internet have become widespread. An IP phone also requires a PBX function in order to connect and control an extension telephone or an external public network. Corresponding to this, there is IP-PBX. IP Centrex is an IP phone that converts an in-house telephone system into an IP phone and places the in-house telephone system in a specific location or connects to a server provided by a telecommunications carrier to make calls. This refers to a service group telephone (Centrex Service). Since this server (IP-PBX) provides the extension function and the like, the company does not necessarily have to install the PBX in the company. When the server is installed on the telecommunications carrier side, general data communication services on the Internet can be used for communication up to that point.

  According to such a method, the company does not need to install and maintain a PBX or an IP telephone server that replaces it, so that it can save costs and personnel. In addition, since an existing IP network facility such as a LAN can be used, it is not necessary to install an extension telephone network. When corporate bases are located in various parts of the country, the conventional telephone system used to make external calls between bases. On the other hand, when IP Centrex is used, remote bases can communicate with each other as an extension network, and the burden of communication charges is reduced.

  An example of extension number control in an IP Centrex system of a voice server is described in Patent Document 1. As shown in FIG. 1 of Patent Document 1, the first mode of extension number control in the IP Centrex system of this related voice server is to call the extension number of only the subscriber accommodated in the own station. Extension number / telephone number conversion means (3-1, 3-2) for converting to own number, all subscriber extension numbers / phone numbers for converting extension numbers into telephone numbers for all subscribers belonging to each IP Centrex group And converting means (4).

Extension number control in the voice server IP Centrex system having such a configuration is the following extension number conversion system.
This system includes a data concentration station (1) and a plurality of subscriber accommodation stations (2-1, 2-2). A telephone number and an extension number are assigned to each subscriber, and the telephone number is used for the incoming call processing for the subscriber. When a call is made from one subscriber to another subscriber in the IP Centrex group to which the one subscriber belongs, the extension number is used as the calling number, and the extension number is converted into a telephone number. Perform connection processing. Each of the subscriber accommodation stations includes an extension number / telephone number conversion means (3-1, 3-2) for converting the extension number of only the subscriber accommodated in the own station into a telephone number. ing.

  The data concentration station (1) includes all subscriber extension number / phone number conversion means (4) for converting extension numbers into telephone numbers for all the subscribers belonging to each IP Centrex group. When subscribers belonging to one IP Centrex group are accommodated in a plurality of subscriber accommodation stations, when a call is made from one subscriber by an extension number, first, conversion means (3-1, 3, 3) in the own station is established. -2) is used to retrieve the telephone number corresponding to the extension number, and when the corresponding telephone number is retrieved, connection processing is performed using the telephone number. When the corresponding telephone number is not retrieved, a conversion request is sent to the data central station (1), the extension number is converted into a telephone number using the conversion means (4) of the data central station (1), Using the obtained telephone number, connection processing is performed.

  As shown in FIG. 2 of Patent Document 1, the second mode of the extension number control in the IP Centrex system of the related voice server has the following configuration. Extension number / telephone number conversion means (6-1, 6-2) for converting the extension number of only the subscriber accommodated in the own station into a telephone number, and the extension of the subscriber not accommodated in the own station It is composed of own extension number / telephone number conversion means (7-1, 7-2) for converting the number into a specific telephone number for extension call reception of the subscriber accommodation station in which the subscriber is accommodated. .

  The extension number control in the IP Centrex system of the related voice server having such a configuration is the following extension number conversion system. A plurality of subscriber accommodation stations (5-1, 5-2) are provided, and a telephone number and an extension number are assigned to each subscriber, and a telephone number is used for incoming call processing for the subscriber. When a call is made from one subscriber to another subscriber in the IP Centrex group to which the one subscriber belongs, the extension number is used as the calling number, and the extension number is converted into a telephone number. Perform connection processing. Each of the subscriber accommodation stations has its own extension number / telephone number conversion means (6-1, 6-2) for converting the extension number of only the subscriber accommodated in the own station into a telephone number; Extension number / telephone number conversion means (7-1, 7) for converting the extension number of the subscriber not accommodated in the telephone into the specific telephone number for receiving the extension call of the subscriber accommodation station accommodated by the subscriber -2).

  When subscribers belonging to one IP Centrex group are accommodated in a plurality of subscriber accommodation stations, if a call is made from one subscriber by an extension number, the extension number of the own station is The corresponding telephone number is searched by the telephone number conversion means and the local extension number / telephone number conversion means. If the result obtained by this search is a telephone number, the telephone number is used to connect to the terminating subscriber in the local station. To do. If the result obtained by this search is a specific telephone number for extension call reception, the local station notifies the receiving station of the IP Centrex number and extension number for identifying the IP Centrex group. The receiving station uses the extension number / telephone number conversion means in the receiving station to convert it to the telephone number of the called subscriber based on the sent IP Centrex number and extension number, and performs connection processing.

  According to the above method, data operations such as registration / deletion / change of the extension number data and telephone number data of each subscriber accommodation station cannot be performed in a lump on the server of the data concentration station. In the IP Centrex system, there is a case where the maintenance person is only in the data concentration station. At that time, the maintenance person may need to perform data operation on each subscriber accommodation station side. Further, even if the maintenance person is in the data concentration station or the like, there arises a problem that the data operation work becomes inefficient, for example, a login is requested to the server on each subscriber accommodation station side.

  Further, in order to solve the above-mentioned problem, this system tries to overcome it by using unique control signal transmission / reception between the voice servers of each station. If this is done (if a unique control signal transmission / reception is defined between the voice servers), the system defines a unique control signal transmission / reception between the voice servers of each station. There is a problem that a system is constructed by selecting and combining products, and it becomes impossible to cope with multi-vendors. Further, there arises a problem that a large cost is required for adding functions of all the servers of the related subscriber accommodation stations.

  Furthermore, in order to solve the above-mentioned problems and the like, this method requires batch distribution of station data from the maintenance console to the voice server of each subscriber accommodation station. As a result, this method causes problems such as an increase in data traffic to the network and an increase in time required for batch registration of station data in order to perform batch distribution of station data from the maintenance console to each subscriber accommodation station. .

  In addition, when SIP (Session Initiation Protocol) is used as a protocol for providing a fixed-line telephone service by IP telephone, a general standard SIP terminal or the like may change an extension number (telephone number). In addition to changing the station data on the server side, it is necessary to change the configuration data (environment setting data) built in the terminal side. Then, it is necessary for general standard SIP terminals and the like to re-register their own extension numbers (phone numbers) in the built-in configuration data on the terminal side, and cannot be collectively managed by the central station server. Cause problems.

JP-A-3-106165

  As described above, the IP Centrex system according to the background art has a problem in maintenance and management that data such as an extension number cannot be changed in one place.

  The present invention has been made to solve such problems, and data operations such as registration, deletion, and change of terminal data of each subscriber accommodation station can be collectively managed by a server on the central station side. It is an object of the present invention to provide an IP Centrex system, a server, a communication control method, and a communication control program.

  An IP Centrex system according to one aspect includes a communication terminal and a server. The communication terminal has means for storing terminal identification data different from the terminal telephone number as a terminal telephone number, and notifying the terminal identification data when making a call. The server includes a terminal station data storage unit that associates and stores a terminal telephone number and the terminal identification data, and the terminal station data based on the terminal identification data notified by transmission from the communication terminal. Terminal station data control means for searching the storage means and utilizing the terminal telephone number associated with the terminal identification data for communication control with respect to the receiving terminal.

An IP Centrex system according to one aspect includes a communication terminal and a server. The communication terminal has means for storing terminal identification data different from a terminal telephone number as a terminal telephone number;
ing. The server is notified from the transmission source when receiving a terminal phone data and a terminal station data storage means for storing the terminal phone number and terminal identification data different from the terminal phone number in association with each other. A terminal station data control unit that searches the terminal station data storage unit based on a terminal phone number of a destination and uses terminal identification data associated with the terminal phone number for communication control with respect to the communication terminal; I have.

  An IP Centrex system server according to one aspect includes a terminal station data storage unit that stores a terminal telephone number and terminal identification data different from the terminal telephone number in association with each other, and the terminal notified by a call from a communication terminal And a terminal station data control unit that searches the terminal station data storage unit based on the identification data and uses a terminal telephone number associated with the terminal identification data for communication control with respect to the receiving terminal. .

  The IP Centrex system server according to one aspect receives a terminal phone data and a terminal station data storage means for storing the terminal phone number and terminal identification data different from the terminal phone number in association with each other and an incoming call to the communication terminal The terminal station data storage means is searched based on the destination terminal telephone number notified from the caller, and the terminal identification data associated with the terminal telephone number is used for communication control for the communication terminal. Terminal station data control means.

  A communication control method according to an aspect includes a step of notifying a server of terminal identification data different from a terminal telephone number as a terminal telephone number when making a call from a communication terminal; and the server identifies a terminal identification notified from the communication terminal Converting the data for use into the terminal telephone number associated with the terminal identification data and using it for communication control with respect to the receiving terminal.

  The communication control method according to one aspect includes a step of acquiring a terminal phone number of a destination, and converting the terminal phone number into terminal identification data associated with the terminal phone number in advance, And a step used for communication control.

  A communication control program according to an aspect causes a computer to execute the communication control method described above.

  According to the present invention, there is provided an IP Centrex system, a server, a communication control method, and a communication control program capable of collectively managing data operations such as registration / deletion / change of terminal data of each subscriber accommodation station by a central station server. Can be provided.

It is a block diagram which shows the structure of the IP Centrex system concerning this Embodiment. It is explanatory drawing for demonstrating the process in the IP Centrex system concerning this Embodiment. It is a figure which shows the outgoing / incoming operation | movement from a standard protocol terminal to an original protocol terminal in the IP Centrex system concerning this Embodiment. It is a sequence diagram which shows the transmission / reception operation | movement from a standard protocol terminal to an original protocol terminal in the IP Centrex system concerning this Embodiment. It is a figure which shows the outgoing / incoming operation | movement from an original protocol terminal to a standard protocol terminal in the IP Centrex system concerning this Embodiment. It is a sequence diagram which shows the transmission / reception operation | movement from an original protocol terminal to a standard protocol terminal in the IP Centrex system concerning this Embodiment. It is a figure which shows the transmission operation | movement to the outside line from a standard protocol terminal in the IP Centrex system concerning this Embodiment. It is a flowchart figure which shows the transmission / reception operation | movement in the IP Centrex system concerning this Embodiment. It is a flowchart figure which shows the transmission / reception operation | movement in the IP Centrex system concerning this Embodiment.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the IP Centrex system according to the first embodiment.

  The IP Centrex system according to the first embodiment includes a voice server A1, which is an IP Centrex system server, a protocol conversion unit B1, a standard protocol terminal C1, and a unique protocol terminal D1.

  The voice server A1 has terminal station data storage means for storing the terminal telephone number (extension telephone number) and the terminal identification data in association with each other. Also, the voice server A1 searches the terminal station data storage means based on the terminal identification data notified by the transmission from the unique protocol terminal D1, and sets the terminal telephone number associated with the terminal identification data as the receiving terminal. It is used for communication control. Furthermore, when the voice server A1 receives an incoming call to the communication terminal, the voice server A1 searches the terminal station data storage means based on the destination terminal telephone number notified from the caller and associates it with the terminal telephone number. The terminal identification data is used for communication control for the communication terminal.

  The voice server A1 includes terminal station data control means A11. The terminal station data control means A11 is composed of standard protocol terminal data A111 and unique protocol terminal data A112.

  The standard protocol terminal data A111 includes extension number data, telephone number data, tenant data, class data, name data, and the like, like the unique protocol terminal data A112. Further, the standard protocol terminal data A111 includes terminal identification data (hereinafter also referred to as “terminal identification number data”). Here, the telephone number data means the telephone number data of the own terminal when connected to the external line, in contrast to the extension number.

  The unique protocol terminal data A112 includes extension number data, telephone number data, tenant data, class data, name data, and the like.

  The protocol conversion means B1 may be a device independent of the voice server A1, or may be built in the voice server A1. The protocol conversion means B1 is configured and operated by a conventional technique that is currently generally used.

  The protocol conversion means B1 and the standard protocol terminal C1 communicate with each other using the standard protocol P1. The protocol conversion means B1 is for converting the standard protocol P1 and the original protocol P21. The protocol conversion means B1 may be a small capacity exchange that converts the standard SIP protocol into a manufacturer's original common signal line protocol. Further, the protocol conversion means B1 may be protocol conversion software built in the voice server A1, or may be a SIP gateway (SIP-GW) that converts the standard SIP protocol into a manufacturer's original protocol. .

  The standard protocol terminal C1 includes standard protocol terminal control means C11 that controls and stores the terminal identification data C111 and at the same time controls the standard protocol. The standard protocol terminal C1 is a communication terminal that is configured and operated by a conventional technique that is generally used at present. The standard protocol terminal C1 is a standard SIP telephone or the like, and it is assumed that the telephone configuration data (environment setting data) of the telephone has the telephone number of the terminal itself, but the telephone number data of the terminal itself is essential. . In the present embodiment, the configuration data of the telephone number of the own terminal is used as terminal identification number data.

The unique protocol terminal D1 is a communication terminal provided with unique protocol terminal control means D11 for controlling the unique protocol. The unique protocol terminal D1 communicates with the voice server A1 using the unique protocol P22.
The unique protocol terminal D1 has a means for storing terminal identification data different from the terminal telephone number (extension telephone number) as the terminal telephone number, and notifying the terminal identification data when making a call.

  The unique protocol terminal D1 is used in combination with the voice server A1 according to the present embodiment, but is assumed to be configured by a conventional technique that is generally used at present. The original protocol terminal D1 is a manufacturer's original digital multi-function telephone or the like, and performs outgoing / incoming operations and display of telephone number and name information under the control of the voice server.

  Next, processing operations in the IP Centrex system according to the present embodiment will be described in detail with reference to FIGS. First, as shown in FIG. 2, the IP Centrex system according to this embodiment includes a voice server A1, a SIP-GW B1, a standard SIP terminal C1, and a multi-function telephone D1, each in a LAN (Local Area Network). Connected so that communication is possible.

  The voice server A1 includes, for example, extension number data STN: 2000, tenant data TN: 2, class data CLS: 2, name data NAME: extension number data STN: 3000, tenant data as terminal data related to the multi-function telephone D1, for example. TN: 10, class data CLS: 10, name data NAME: “Chiba Branch General Affairs Section”, and terminal identification number data CSTN: 00001234 are set and stored from the maintenance console. Here, the telephone number data shown in FIG. 1 is omitted for the sake of simplicity.

  As the configuration data of the standard SIP terminal, for example, the same number as the terminal identification number data CSTN: 0000001234 set in the voice server A1 is registered. This number is originally intended to register an extension number actually used, and is self-terminal telephone number data which is general configuration data of a standard SIP terminal. However, if the actual extension number is registered here, the configuration data of the standard SIP terminal must be changed when the extension number is changed in the voice server A1. Therefore, in order to be able to uniquely identify the terminal, in the present embodiment, the same number as the terminal identification data CSTN: 0000001234 is registered instead of the extension number.

  Next, using FIG. 3, the sequence diagram of FIG. 4, and the flowcharts of FIG. 8A and FIG. 8B, the operation when making a call connection from the standard SIP terminal C1 to the multi-function telephone D1 will be described in detail.

  The standard SIP terminal C1 (standard terminal) dials “2000”, which is the extension number of the multi-function telephone D1 (unique terminal), and makes a call operation. The standard SIP terminal C1 notifies the SIP-GW B1 (gateway) that the called party number is “2000” and the calling party number is “00001234” using the standard SIP protocol (specifically, the notification is an INVITE message). The SIP-GW B1 converts the voice server A1 into a protocol that can be handled by the voice server (for example, a common channel signaling (JT-Q931-a), etc.), and then receives the called number “2000”. , The calling number “00001234” is notified.

  The voice server A1 identifies the calling extension terminal in step S101 in FIG. 8A, and the caller in step S103 flows to the step of the standard terminal. In step A105, data search is performed using the calling number “000001234” as a key for the identification number, and the extension number data STN of the caller: 3000, tenant data TN: 10, class data CLS: 10, name data NAME: “Chiba branch” Ask the General Affairs Division. Here, in the present embodiment, the calling number “0000001234” is not handled as extension number data, but is used as a search key as terminal identification number data.

  In step S111, the incoming extension terminal is identified, and the recipient in step S112 flows to the step of the unique terminal. In step S112, data retrieval is performed using the called party number as a key for extension data, and the extension number data STN of the called party: 2000, tenant data TN: 2, class data CLS: 2, name data NAME: “Tokyo Branch General Affairs Division” Ask.

  By the above method, the called number “2000”, the calling number “3000”, and the name of the caller “Chiba Branch General Affairs Section” are obtained. In step S121, the calling extension terminal is identified, and the caller in step S123 flows to the step of the standard terminal. In step S125, the standard SIP terminal C1, which is the caller, displays the dial number “3000” as the terminal control of the callee (the display of this dial number may be a function of the terminal rather than the voice server). In the voice server A1, numerical analysis is performed by a number plan for the caller tenant, and connection control and service control are checked by the caller class to control transmission. In step S131, the incoming extension terminal is identified, and the callee in step S132 flows to the step of the unique terminal.

  In step S132, the voice server A1 performs numerical analysis based on the number plan for the recipient tenant as terminal control of the recipient, and performs incoming call control by checking connection restriction and service restriction in the caller class. The multi-function telephone D1, which is the callee, is notified and displayed with the caller extension number “2000” and the caller name information “Chiba Branch General Affairs Section” using a unique protocol.

  Next, using FIG. 5 and the sequence diagram of FIG. 6 and the flowcharts of FIG. 8A and FIG. 8B, the operation when making a call connection from the multi-function telephone D1 to the standard SIP terminal C1 will be described in detail.

  The multi-function telephone D1 (unique terminal) dials “3000”, which is the extension number of the standard SIP terminal C1 (standard terminal), and performs a call operation. The multi-function telephone D1 (unique terminal) notifies the voice server A1 that the called number is “3000” and the calling number is “2000” using the unique SIP protocol. The voice server A1 identifies the calling extension terminal in step S101 in FIG. 8A, and the caller in step S102 flows to the step of the unique terminal.

Step S 104 is to data search for the calling party number "2000" as the key of the extension data, the caller's extension number data STN: 2000, tenant data TN: 2, class data CLS: 2, name data NAME: "Tokyo Branch Ask the General Affairs Division. This part is not a part specific to the present invention, but is required by logic of related technology. Thus, the called number “3000” and the calling number “2000” are obtained. In step S111, the incoming extension terminal is identified, and the callee in step S113 flows to the standard terminal step.

  In step S115, data retrieval is performed using the called number as a key of extension data, and the extension number data STN of the called party: 3000, tenant data TN: 10, class data CLS: 10, name data NAME: “Chiba Branch General Affairs Section” In addition, terminal identification data CSTN: 00001234 is obtained. The voice server A1 identifies the calling extension terminal in step S121, and the caller in step S122 flows to the step of the unique terminal. In step S124, the dial number “3000” and the callee name information “Tokyo Branch General Affairs Division” are displayed on the multi-function telephone D1 as the caller as terminal control of the callee. Analyze and check connection restrictions and service restrictions in the caller class to control outgoing calls.

  Next, the voice server A1 identifies the incoming extension terminal in step S131, and the called party in step S133 flows to the step of the standard terminal. In step S135, as a terminal control of the callee, a numerical analysis is performed with a numbering plan for the callee tenant, connection control and service control are checked in the caller class, and the call control is performed. In SIP-GW B1, In addition to “2000”, “00003434” is notified as the called number. That is, the voice server A1 does not use the actual extension number “3000” as the called number to be notified to the SIP-GW B1 and the standard SIP terminal C1 that is the receiving terminal, but notifies the terminal identification number data “00001234”. .

  SIP-GW B1 converts standard SIP terminal C1 to a protocol that can be handled by standard SIP terminal C1, and then notifies "0000001234" as the called number in addition to the calling number "2000". The standard SIP terminal C1, which is the called party, recognizes that the incoming call is to the own terminal because “0000001234” is registered in the own terminal telephone number data built in the standard SIP terminal, and the incoming call is displayed. At the same time, the caller extension number “2000” is displayed.

  Next, using FIG. 7 and the flowcharts of FIGS. 8A and 8B, the operation in the case of performing outgoing connection from the standard SIP terminal C1 to a dedicated line or a public network will be described in detail. MG-PRI (Media Gateway-Primary Rate Interface: Temporary Group Interface Media) in which the standard SIP terminal C1 (standard terminal) is one of its own trunks (a general term for devices for matching the outgoing interface of the PBX) (Gateway) Consider a case where an outgoing connection is made to a public network via E1. The standard SIP terminal C1 performs a transmission operation by dialing a transmission number to the public network, for example, “0-03-3111-2222”. The standard SIP terminal C1 notifies the SIP-GW B1 (gateway) that the called party number is “0-03-3111-2222” and the calling party number is “00001234” (specifically, the INVITE message). Will be notified by).

  The SIP-GW B1 notifies the voice server A1 that the destination number is “0-03-3111-2222” and the calling party number is “00001234” after conversion into a protocol that can be handled by the voice server. The voice server A1 searches the calling number “0000001234” as a terminal identification number which is a terminal data search key in step A105 of FIG. 8 and searches for extension number data STN of the caller: 3000, tenant data TN: 10 , Class data CLS: 10, Name data NAME: “Chiba Branch General Affairs Section” is obtained. This is the logic that forms the core of the present invention, and the calling number "000001234" is not handled as extension number data, but is used as a search key as terminal identification number data. The called number “0-03-3111-2222”, the calling number “3000”, and the name of the caller “Chiba Branch General Affairs Division” are required.

  In step S123, the dial number “0-03-3111-2222” is displayed on the standard SIP terminal C1 as the caller as terminal control of the callee (this may be a function on the terminal side). Then, the voice server A1 performs numerical analysis with a numbering plan for the caller tenant, performs connection control and service control check by the caller class, and performs call control. Specifically, the voice server A1 selects a free trunk of MG-PRI E1, and sends the called number “03-3111-2222” to the public network. Although omitted in FIG. 8, since the callee type is not an extension terminal, the determinations in steps S111 and S131 are skipped, and outgoing call control is performed by a related technique when the callee is a trunk.

  In step S112, the incoming call of the standard SIP terminal C1 from the trunk is converted into an extension number or the incoming call number received from the trunk (when the received incoming call number matches the called extension number as in the case of an incoming trunk line). The terminal identification number is searched by using the terminal data key as the terminal data key (if the incoming call number needs to be converted into the extension number of the destination by the station data, such as dial-in incoming from the public network) By obtaining the data “00001234”, the incoming call ringing display can be made to the standard SIP terminal C1.

  Next, the effect of this embodiment will be described. In the present embodiment, when calling from the standard SIP terminal C1 (standard terminal), the local terminal telephone number data of the configuration of the standard SIP terminal C1 is not the actual extension number but the terminal identification number data “00001434”. Register. Then, the voice server A1 searches for the calling number “00001234” notified from the terminal as terminal identification number data which is a terminal data search key, and the extension number data, tenant data, class data, name data of the caller Therefore, when changing the actual extension number, the extension number data in the configuration of the standard SIP terminal C1 can be changed.

  Further, according to the present embodiment, when an incoming call is made to the standard SIP terminal C1 (standard terminal), the extension number data in the configuration of the standard SIP terminal C1 is not an actual extension number but is used for terminal identification. "Register. Then, the voice server A1 is configured to notify the standard SIP terminal C1 as a called party number, which is “003001234”, which is terminal identification number data, instead of an actual extension number as a called party number to be notified when an incoming call is received. Therefore, when changing the actual extension number, it is possible to change the local telephone number data in the configuration of the standard SIP terminal C1.

  In addition, since the present embodiment is configured as described above, only the actual extension number can be used as the dial number used when making a call or the extension number of the other party displayed on the standard SIP terminal C1 or the multifunction telephone D1. Not used. The terminal identification number data can be prevented from touching the eyes of a person who makes and receives calls using the telephone. The terminal identification data can be seen by the telephone user only when the configuration data is registered when the telephone is first installed. After that, since the configuration data does not need to be changed when the extension number or the telephone number for calling the outside line is changed, the terminal identification data is not noticed.

Embodiment 2. FIG.
Next, the IP Centrex system according to the second embodiment will be described. In the first embodiment, the protocol conversion means B1 is SIP-GW B1, but in the second embodiment, the voice server B1 has a standard SIP interface and a common signal line interface.

  In the first embodiment, when changing the terminal data with the station data of the voice server A1, it is not necessary to modify the configuration data of the standard SIP terminal, and the SIP-GW B1 data need not be changed. This means that in the second embodiment, when the terminal data is changed with the station data of the voice server A1, it is not necessary to change the station data of the voice server B1. That is, when the voice server A1 is regarded as a center station that performs centralized control of station data, and the voice server B1 is regarded as a local station that directly accommodates SIP-GW B1 (direct control communication), only the center station changes the terminal data. This means that an IP Centrex system capable of supporting

  As described above, according to the IP Centrex system according to the second embodiment, in a voice server that controls a voice network that accommodates a terminal that does not have manufacturer-specific configuration data, such as a standard SIP terminal, Extension number data can be changed without changing the built-in configuration.

  In addition, more advanced data such as phone number data for external connection, tenant data, class data, and name data can be provided on the voice server side, and configuration data built into the terminal side when these changes are made It is applicable to uses such as a voice server, in which no change is required. Further, the present invention can be applied to an application such as a voice server IP Centrex system including a center station that centrally manages terminal data and a local station that directly accommodates each terminal.

  In addition, the extension number / phone number / tenant / class / name data of the extension is not included in the configuration data built into each subscriber accommodation station or each extension telephone terminal. Data operations such as registration / deletion / change of terminal data can be registered in the central server's voice server, and can be managed in a single window, which improves the efficiency of station data maintenance. Furthermore, the terminal data can be changed only by changing the station data without changing the configuration data built in the telephone, and the efficiency of maintenance of the station data can be further improved.

  Furthermore, in order to realize a single window for station data operation, it is possible to provide an IP Centrex system for a voice server that does not place a burden on the network, and that does not perform batch distribution of station data to the voice server of each subscriber accommodation station. .

  Furthermore, since the terminal phone number data generally registered in the standard protocol terminal is used as the terminal identification number data instead of the actual extension number, a unique control signal transmission / reception between the voice servers of each station is performed. It is possible to provide an IP Centrex system for a voice server that can be used without using the. Therefore, when the present invention is added to an existing system, if it is modified so that it is added only to the voice server, protocol conversion devices such as telephone terminals and gateways can be used for the existing system, and the cost of system migration can be reduced. Can do.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, although the number is used for terminal identification in the above embodiment, a combination using characters such as alphanumeric characters, kanji, hiragana, and symbols may be used.

  The voice server A1 may be configured by storing a communication control program in a computer and executing the program. The communication control program is a computer program that realizes the processing executed by the voice server A1 as described above. The communication control program is stored using various types of non-transitory computer readable media and can be supplied to a computer. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)) are included. The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

A1 voice server A11 terminal station data control means A111 standard protocol terminal data A112 unique protocol terminal data B1 protocol conversion means C1 standard protocol terminal C11 standard protocol terminal control means C111 terminal identification number data D1 unique protocol terminal D11 unique protocol terminal control means P1 Standard protocol (between protocol conversion means and original protocol terminal control means)
P21 original protocol (between voice server and protocol conversion means)
P22 Original protocol (voice server to original protocol terminal control means)
E1 MG-PRI (Temporary Group Interface Media Gateway)

Claims (10)

An IP Centrex system comprising a communication terminal and a server,
The communication terminal is
Stores terminal phone number and different terminal identification data for use in dialing for calling the communication terminal as the terminal telephone number, when calling is notified of the destination telephone number specified by the terminal identification data and dialing Means to
The server
A terminal station data storage means for associating the previous term terminal telephone number with the terminal identification data and storing it as terminal data ;
The terminal station data storage means is searched by using the terminal identification data on the calling side notified by the calling from the communication terminal to obtain the terminal data on the calling side, and the call is transmitted based on the terminal data on the calling side. A terminal station data control means for performing outgoing control for the terminal and performing incoming control for the incoming terminal ,
IP Centrex system. Said terminal station data control unit, when receiving the incoming call to the called terminal, based on the notified from the source the destination telephone number, the terminal of the called party by searching the terminal station data storage means seeking identification data, utilizing the terminal identification data of the called party to call control for the terminating terminal,
The IP Centrex system according to claim 1 .   When the communication terminal is a standard protocol terminal, the terminal data includes the terminal identification data of the communication terminal, and further includes at least one of extension telephone number data, telephone number data, tenant data, class data, and name data. Including one,
The IP Centrex system according to claim 1 or 2. When the communication terminal is a unique protocol terminal, the terminal data includes at least one of extension telephone number data, telephone number data, tenant data, class data, and name data.
The IP Centrex system according to any one of claims 1 to 3. It said terminal telephone number, IP Centrex system according to claims 1 to 4 any one, which is a telephone extension. The telephone number data is an external telephone number.
The IP Centrex system according to any one of claims 3 to 5. When the communication terminal is a standard protocol terminal, the terminal station data control means does not communicate directly with the communication terminal at the time of outgoing or incoming calls, but communicates via a protocol conversion means for converting a standard protocol and a unique protocol. To
The IP Centrex system according to any one of claims 1 to 6. A server in an IP Centrex system comprising a communication terminal and a server,
A terminal station data storage means for associating a terminal telephone number used for dialing operation when calling the communication terminal with terminal identification data different from the terminal telephone number and storing it as terminal data ;
When receiving an incoming call to the communication terminal, the terminal station data storage means is searched for the terminal data on the caller side based on the terminal phone number of the callee notified from the caller. Terminal station data control means for performing outgoing call control for the calling terminal based on the terminal data, and performing incoming call control for the called terminal;
IP Centrex system server with A control method in an IP Centrex system including a communication terminal and a server,
The communication terminal is terminal identification data different from a terminal telephone number used for dialing operation when calling the communication terminal at the time of outgoing call, and is specified by the terminal identification data stored as the terminal telephone number and the dialing operation Informing the server of the destination telephone number ;
The server
When the terminal telephone number in the previous term and the terminal identification data are associated and stored as terminal data in the terminal station data storage means,
Obtains the terminal data of the calling party by searching the terminal station data storage means using said terminal identification data of the calling party notified from the communication terminal, calling for the originating terminal based on the terminal data of the calling Performing control and performing incoming control on the receiving terminal ;
To execute the steps that comprise the computer, communication control method in IP Centrex system. The communication control program which makes a computer perform each step in the communication control method of Claim 9 .

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