JP2011009884A - Mobile exchange system and management server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems that terminals connected to a mobile exchange that does not have an extension additional service function cannot be used as an extension terminal in an enterprises, and pick-up or call-hunting functions available with PBXs cannot be implemented.SOLUTION: The mobile exchange holds registration information indicating whether or not each terminal has the extension additional service, and when the terminal is already registered for the extension additional service, the exchange reports an incoming call for the registered terminal to a management server. The management server holds the information of an extension additional service group for each terminal as extension additional service information. When receiving an incoming call notification to a terminal registered for the extension additional service, the server reports the incoming call to the terminal registered for the extension additional service.

Description

  The present invention relates to an extension service in a mobile switching network, and in particular, a mobile switching system that realizes an extension service such as pick-up or call hunting that is widely serviced by a private branch exchange in a mobile switch that does not have an extension service function. It relates to the management server.

  A private branch exchange (PBX: Private Branch eXchange), which is widely used in enterprises, etc., establishes and maintains the extension additional service group relationships such as CUG (Closed Users Group) pickup service group and call hunting group in the subordinate terminals. By doing so, an extension extension service is provided. Further, coupled with the concept of SOHO (Small Office Home Office), there is a social need to make it possible to use a company extension terminal at home and to use the home as a satellite office.

  On the other hand, in recent years, mobile communication systems have been developed. For example, a third generation mobile switching system (3GPP: Third Generation Partnership Project) has begun to be deployed. There is a need to use a mobile terminal of a mobile switching system as a corporate extension terminal in consideration of the linkage with the conventional extension service of PBX. However, since the mobile exchange is not a PBX, there is no concept of realizing inter-terminal cooperation after grouping terminal numbers, and an extension extension service cannot be provided.

  If the mobile terminal of the IP Centrex system has a dual function capable of communicating with the public network, and the mobile terminal is within the IP Centrex range, it is connected to the extension line, and is connected to the outside line within the public network. A technique is known in which when moving from a network to an IP Centrex range, the range is detected and switched to extension connection. (Patent Document 1)

JP 2007-221554 A

  However, even if dual function mobile terminals that can be used in both the public network and the corporate network are connected to the public network, they can be grouped, picked up, and provided with call hunting functions. Since it cannot know the incoming call, it will not be a service.

  At present, telecommuters who work from home, and work styles where the home office is a satellite office have been developed, but when using a home office as a satellite office, the extension service for regular offices is as described above. Since the mobile terminal is connected to the public network, it cannot be provided.

  It is an object of the present invention to configure a mobile switching system including a management server in a mobile switching system that does not have an extension service function, and to realize an extension service such as pick-up or call hunting for mobile terminals under the system. .

  The mobile switching system and the management server constitute a mobile switching system for providing an extension extension service to a terminal connected to the mobile switching system.

  The mobile exchange is equipped with a DB that holds information on the presence / absence of an extension service for each terminal, and notifies the management server of an incoming call when the destination terminal is a terminal registered with the extension service.

  The management server includes a DB that holds extension additional service information including at least the extension additional service group type and the group name for each terminal, and when receiving an incoming notification to the extension additional service registration terminal, the holding extension additional service The terminal notifies the terminal registered in the extension extension service from the information.

  According to the present invention, it becomes possible for a mobile terminal subordinate to a mobile switch having no extension service function to recognize an incoming call to the extension service group, and to receive extension services such as pickup and call hunting. This makes it possible to use the extension additional service even at a satellite office at home or the like.

It is a figure which shows the mobile switching system of one Embodiment of this invention. It is a figure which shows the block configuration of the 3GPP exchange and management server of one Embodiment of this invention. It is a figure which shows DB of 3GPP exchange of one Embodiment of this invention. It is a figure which shows DB of the management server of one Embodiment of this invention. It is a figure which shows the extension additional service processing procedure (the 1) of the management server of one Embodiment of this invention of this invention. It is a figure which shows the extension additional service processing procedure (the 2) of the management server of one Embodiment of this invention of this invention. It is a figure which shows the extension additional service processing procedure (the 3) of the management server of one Embodiment of this invention of this invention.

  Hereinafter, as a specific example, an example in which an extension extension service is realized in a 3GPP mobile switching network will be described.

  FIG. 1 is a diagram showing a mobile switching system according to an embodiment of the present invention.

  The communication system includes a mobile switching network 1, an Internet network 2, a management server 3, a plurality of 3GPP terminals 8, and a plurality of personal computers 7 paired with 3GPP terminals. The plurality of 3GPP terminals 8 are grouped as extension additional service groups such as extension additional service group A 5 and extension additional service group B 6.

  The mobile switching network 1 is composed of a plurality of 3GPP mobile switching equipment and radio equipment. Here, the 3GPP switch 4 is representative. Also, the 3GPP terminal is actually a component of the mobile switching network 1, but here, it is shown separately for convenience.

An outline procedure of the extension additional service in this system configuration will be described.
A. The 3GPP terminal N 8-3 transmits to the 3GPP terminal 1 8-1.
I. The 3GPP switch 4 transmits the incoming call from the 3GPP terminal 8-3 to the 3GPP terminal 18-1.
C. When the 3GPP terminal 1 8-1 is registered in the extension additional service, the 3GPP exchange 4 notifies the management server 2 of the incoming call to the 3GPP terminal 1 8-1 by referring to the stored DB.

  The management server 2 that has received the incoming notification from the 3GPP switch 4 to the 3GPP terminal 18-1 selects the transfer destination 3GPP terminal by the following method.

If the destination 3GPP terminal 18-1 is a call hunting group with reference to the extension extension service of the DB held, the 3GPP terminal of the next order is selected corresponding to the connection order of the call hunting group. If the extension extension service is a pickup group, the selection is made according to the following procedure.
D-1. All 3GPP terminals of all the same pickup groups are selected as transfer destination 3GPP terminals, and notification of incoming calls (alternative reception request) to 3GPP terminals 18-1 is made to the personal computers paired with each 3GPP terminal.
D-2. The personal computer (for example, 3GPP terminal 2 8-2) that has received the notification notifies the management server 3 that alternative reception will be performed.
D. The management server 3 notifies the selected destination 3GPP terminal to the 3GPP switch 4 to switch the call from the 3GPP terminal N 8-3 to an alternative reception destination (for example, 3GPP terminal 2 8-2).
E. The 3GPP switch 4 transfers the incoming call from the 3GPP terminal N 8-3 to the alternative 3GPP terminal (3GPP2 8-2).

FIG. 2 is a diagram showing a block configuration of a 3GPP switch and a management server according to an embodiment of the present invention. The block configuration of the 3GPP switch and the management server is shown together with the mobile switching network 1 and the Internet network 2.
3GPP exchange Terminal IF 11 with 3GPP terminal (multiple terminal IFs are described as representative IF IF 11), telephone exchange control to each terminal, telephone exchange / transfer control for transferring messages to the management server The management server IF 14 is an interface with the management server.

  In the case of a terminal that receives a call from a 3GPP terminal at the terminal IF 11 and is registered in the extension additional service based on information in a terminal state management table to be described later, the 3GPP terminal registered for the extension additional service in the management server 3 via the management server IF 14 Notify incoming calls to.

  Also, information on the transfer destination terminal of the incoming call to the destination terminal from the management server 3 is received, a message such as transfer from the telephone exchange / transfer control unit 12 is processed, and the corresponding 3GPP terminal is passed through the terminal IF 11 Perform the transfer process.

  Here, the terminal IF 11, the telephone exchange / transfer control unit 12, and the DB 13 shown as blocks according to the present invention are blocks provided in an existing 3GPP exchange, and the management server IF 14 is, for example, a TASPI (Telephony Service Application Programming). A board on which (Interface) is mounted may be mounted as an interface.

TSAPI is a standard interface for computer telephony services. Call connection control (calling, disconnection, telephone number transmission / reception, response, hold, transfer, reconnection, incoming call distribution, routing, etc.), call status notification (calling, disconnection, telephone) Number transmission / reception, response, hold, transfer, reconnection, incoming call distribution, routing, etc.). The 3GPP switch 4 transmits the status state of the 3GPP terminal (standby, outgoing, incoming, incoming call terminal number, etc.) to the management server 3. In addition, the terminal number of the transfer destination is received from the management server 3, the DB information is updated, and connection control is performed to transfer the destination to the transfer destination. Detailed description of TSAPI will be omitted.
Management server 3GPP exchange IF21 which is an interface with 3GPP exchange of the specification of TSAPI, terminal exchange control management function unit 22 for controlling pickup group or call hunting group and message control as terminal exchange control management, extension Additional service information (extension additional service registration presence / absence, PC address, terminal status, etc.), DB 23 for holding message information, personal computer IF 24 as an interface with a personal computer, and message transfer processing unit 25 for processing a message to be transmitted to the personal computer. .

  The 3GPP exchange IF 21 receives the notification of the destination terminal number from the 3GPP exchange 4 and transmits it to the terminal exchange control management function unit 22.

The terminal exchange control management function unit 22 receives the destination terminal number notified from the 3GPP exchange IF 21, acquires the information in the DB 23, and performs the following.
A. Check if it is registered in the extension additional service group (pickup, call hunting) held by the notified destination terminal.
I. A message (refer to the message information below) to the terminal and the paired personal computer that performs the extension service corresponding to the contents of the extension service is selected.
C. An alternative reception message is transmitted via the personal computer IF 24 to the personal computer paired with the selected terminal.
D. A reply is received from the personal computer via the personal computer IF 24, and the terminal number selected as the forwarding destination terminal is notified to the 3GPP exchange IF 21 of the forwarding destination terminal number.

  The 3GPP exchange IF 21 transmits the received transfer destination terminal number to the 3GPP exchange 4.

  The personal computer IF 24 is an interface with the personal computer 7, and transmits messages such as incoming notification and alternative reception to the personal computer 7 according to instructions from the terminal exchange control management function unit 22. On the other hand, an alternative reception reply from the personal computer 7 is received and notified to the terminal exchange control management function unit 22. Although a personal computer is shown as a pair with the 3GPP terminal here, any terminal that can communicate messages with the management server may be used.

  The contents of the DB 23 will be described with reference to FIG.

  The message processing unit 25 selects and generates DB message information according to an instruction from the terminal exchange control management function unit 22.

FIG. 3 is a diagram showing the DB of the 3GPP switch according to the embodiment of the present invention. 1) terminal state management information, and 2) an extension additional service message.
Terminal status management information As terminal status management information, data related to extension service, status, and billing processing is held and managed. The extension additional service section is data to be added to the existing 3GPP exchange in order to realize the present invention.
A. Extension extension service: manages whether or not the extension extension service of the target 3GPP terminal is registered. When the extension extension service is registered in each 3GPP terminal under the 3GPP exchange, it is determined that the extension extension service is present. When the service is provided, the contact server address of the management server is held as a contact address.
I. Status: 3GPP terminal status includes standby, out-of-service area, calling, transfer destination registration, and in-call items. Each 3GPP terminal is held and managed. The transfer destination registration holds the transferred terminal number. When a call is in progress, the other party number and whether or not the call is terminated are managed. The data is also maintained and managed by existing 3GPP exchanges, and detailed description thereof is omitted.
C. Charging processing related: For charging processing when a call is made, it is composed of items related to charging such as call time and distance to the communication partner. Description is omitted.

The case where an incoming call is received at the terminal number “090-xxxx-B” will be described. This terminal is registered in the extension additional service, and the terminal number of the other party is “080-ABCD-1234”. is there. If there is a call to this terminal, the management server at address “AB-CD-1” is notified that there is an incoming call.
Message Information As message information, for example, a terminal ““ XYX-ABCD-EFGH ”is receiving a call. "," Calls from "XYX-AABB-EFGH" will be transferred. Message. According to the operation procedure of the 3GPP exchange, a message is selected and transmitted to the other party. Messages for extension supplementary services are added as needed.

As described with reference to FIGS. 2 and 3, the functions added to the existing 3GPP exchange for the extension additional service are as follows.
A. Information on the presence / absence of the extension additional service is added and held as terminal state management information.
B. Holds a message to the management server 3 and has a management server IF 14 of TASPI specifications, exchanges DB data such as the status of the 3GPP terminal held with the management server 3 and executes call connection control.

FIG. 4 is a diagram showing the DB of the management server according to the embodiment of this invention. As the terminal status management table 1), pickup group, call hunting group, personal computer IP address, and status information items are shown for each 3GPP terminal, and 2) message information is shown as an example of a message.
Terminal number This is the terminal number of all 3GPP terminals under the management server.
Personal computer IP address This is the address of the personal computer paired with each 3GPP terminal, and the notification from the management server to the terminal number is sent to the personal computer corresponding to one to one. For example, the IP address of the personal computer “090-xxxx-A” is “XY-AB-1”.
Pickup group Holds the name of the pupup group to which each 3GPP terminal belongs. For example, five terminals from “090-xxxx-A” to “090-xxxx-E” belong to the same group “A1”.
Call Hunting Group Holds the name of the call hunting group to which each 3GPP terminal belongs. For example, five terminals from “090-xxxx-A” to “090-xxxx-E” belong to the same group “B1”, and the intra-group connection order is a terminal number, for example, “090-xxxx-A”. Are in the first place, and in the following order, "090-xxxx-B", "090-xxxx-C", "090-xxxx-D", and "090-xxxx-E".
Status Waits for the state of each 3GPP terminal at each time, and includes items of out-of-communication, calling, calling, and transfer destination registration, and maintains and manages the normal state of each 3GPP terminal. When a call is in progress, the destination number and whether or not the call is finished are managed, and the transfer destination registration is the transferred terminal number. For example, “090-xxxx-A” is in a standby state, “090-xxxx-B” is in a call, and the other party is “080-ABCD-1234”. “090-xxxx-D” is being called and is being transferred to “090-xxxx-E” as an extension service. Information on the state of these terminals is received from the 3GPP exchange by TSAPI, and the transfer destination 3GPP terminal number is also transmitted from the management server.

  Also, for example, please receive an incoming call to “terminal number“ ABC-XYYX-EFGH ”as message information. ”Or the like.

FIG. 5 is a diagram showing an extension additional service processing procedure (part 1) of the management server according to the embodiment of this invention. The processing procedure of the management server is shown together with an example of information content with the 3GPP switch.
S1: The management server receives the following incoming message from the 3GPP switch to terminal X.
A. Destination terminal number (number of the terminal receiving the incoming call): terminal number of terminal X Caller's terminal number: Terminal number A
C. Status: Incoming (represents current status)
D. Forwarding service setting status (Indicates whether incoming call is being forwarded): No forwarding setting Transfer destination terminal number (transfer destination terminal number when transfer setting is present): None S2: The management server confirms whether the terminal X is registered in the extension additional service. If registered, the process proceeds to S3. Otherwise, the process proceeds to S11, and the process of the management server enters a waiting state.
S3: The management server sets the status of the terminal X to incoming.
S4: Check whether the terminal X belongs to the call hunting group. If it belongs to the call hunting group, the process proceeds to S5, and if not, the process proceeds to S6.
S5: The management server confirms the connection rank and status of the terminal for call hunting group registration, and selects a terminal with a status of waiting in the next rank after the terminal X. If the terminal of the next rank is not on standby because it is out of service or the like, the terminal of the next rank is further selected (here, the selected terminal is C), and the terminal C is set as the transfer destination of the terminal X in the DB. Set and send the following message to the 3GPP switch.
A. When terminal X is registered as a base unit: destination terminal number: terminal number of terminal X Transfer service setting status: Transfer setting available. Transfer destination terminal number: Terminal number of terminal C S6: Check whether the terminal X belongs to the pickup group. If it belongs to the pickup group, the process proceeds to S7. If not, the process proceeds to S11. It will be in a waiting state.
S7: The management server transmits the following message to the standby member of the same group member as the destination terminal X.
A. Calling tip number: Terminal number of terminal X b. Caller's terminal number: Terminal A's terminal number S8: The management server receives the following message from the transmitted 3GPP terminal of the pickup group.
A. Destination terminal number: Terminal number of terminal X Caller's terminal number: Terminal number of terminal A c. Response terminal number: Terminal number of responder terminal S9: While the management server receives the message, if the status of the terminal X becomes “waiting” or “busy”, the pickup group indicates “error (no response required)”. Reply notification.
S10: The management server selects the terminal that responded first (here, terminal D), sets terminal D as the transfer destination of terminal X in the DB, holds it, and notifies the 3GPP switch of the following message:
A. Destination terminal number: Terminal number of terminal X Transfer service setting status: Transfer settings are present c. Transfer destination terminal number: Terminal number of terminal D S11: The management server ends the management of the extension service and enters a waiting state.

  The 3GPP switch 4 receives the notification from the management server 3 and transfers the incoming call to the terminal number X to the selected terminal C (S5) and terminal D (S10).

  If all the 3GPP terminals in the group cannot receive even if they are transferred (they are not off-hook even if they are waiting), the existing telephone response procedure is followed. That is, the call is terminated on the calling side without receiving off-hook.

FIG. 6 is a diagram showing the extension additional service processing procedure (part 2) of the management server according to the embodiment of this invention. A processing procedure when the terminal X starts a call with the terminal A in response to an incoming call from the terminal number A to the terminal X is shown.
S21: The management server receives the following incoming message from the 3GPP switch to terminal X.
A. Destination terminal number: Terminal number of terminal X Caller's terminal number: Terminal number of terminal A c. Status: busy. Transfer service setting status: No transfer setting Transfer destination terminal number: None S22: The management server checks whether the terminal X is registered in the extension extension service. If the terminal X belongs to the call hunting group, the process proceeds to S23, and if not, the process proceeds to S24.
S23: The management server changes the status of the terminal X from receiving to calling.
S24: The management server sends the following message to the 3GPP switch.
A. Destination terminal number: Terminal number of terminal X Caller's terminal number: Terminal number of terminal A c. Status: busy. Transfer service setting status: No transfer setting Transfer destination terminal number: none S25: The management server ends the management of the extension service and enters a waiting state.

FIG. 7 is a diagram showing an extension additional service processing procedure (part 3) of the management server according to the embodiment of this invention. The processing procedure when the call between the terminal A and the terminal C is terminated after the incoming call to the terminal X is transferred to the terminal C is shown.
S31: The management server receives a message for an incoming call to terminal X (transfer terminal C) from the 3GPP switch.
A. Destination terminal number: Terminal number of terminal X Caller's terminal number: Terminal number of terminal A c. Status: End of call d. Transfer service setting status: Transfer setting enabled. Transfer destination terminal number: Terminal C
S32: The management server confirms whether the terminal X terminal C is registered in the extension additional service.
S33: The management server changes the status of terminal C to call end.
S34: The management server cancels the transfer setting set for the DB group member including terminal X and transmits the following message to the 3GPP switch.
A. Destination terminal number: Terminal number of terminal X Caller's terminal number: Terminal number of terminal A c. Status: End of call d. Transfer service setting status: Transfer setting enabled. Transfer destination terminal number: Terminal C
S35: The management server ends the management of the extension service and enters a waiting state.

1 Mobile switching network 2 Internet network 3 Management server 4 3GPP switch 5 Extension extension service group A
6 extension service group B
7-1, 7-2, 7-3 Personal computer 8-1, 8-2, 8-3 3GPP terminal 11 Terminal IF
12 Telephone exchange / transfer control unit 13 DB
14 Management server IF
21 3GPP exchange IF
22 Terminal exchange control management function unit 23 DB
24 PC IF
25 Message transfer processor

Claims (4)

A mobile switching system comprising a mobile switch and a management server,
The mobile switch holds registration information on the presence / absence of an extension service for each terminal, and if the destination terminal received from the terminal is a terminal registered in the extension service, the mobile switch receives an incoming call to the registered terminal. Has a function to notify the management server,
The management server holds at least information on the presence / absence of extension supplementary service, extension supplementary service type and extension supplementary service group information as extension supplementary service information for each terminal, and sends information from the mobile switch to the terminal registered in the extension supplementary service. A mobile switching system having a function of notifying an incoming call to a terminal defined by a registered extension additional service when an incoming call notification is received. The management server according to claim 1,
The mobile switching system further comprising a function of instructing the mobile switching center to transfer the incoming call to the terminal instructed to transfer when the transfer instruction is received from the terminal that has notified the incoming call. A management server in a mobile switching system composed of a mobile switch and a management server,
When at least the presence / absence of extension supplementary service, extension supplementary service type and extension supplementary service group information are held as extension supplementary service information for each terminal, and an incoming call notification is received from the mobile switch to the terminal registered for the supplementary extension service A management server having a function of notifying a terminal defined by a registered extension additional service of an incoming call. 4. The management server according to claim 3, further comprising a function of receiving a transfer instruction from a terminal that has notified the incoming call, and instructing the terminal that has instructed transfer to the mobile switch to transfer the incoming call. The management server according to claim 3, wherein:

Images