KR100204876B1 - A multiprocessing apparatus and method for vms service system - Google Patents

Abstract

The present invention relates to a multiplexing method and apparatus for a voice mailbox service system, wherein a plurality of IPU units are used to multiplex a voice mailbox service system, and IPU units in the multiplexed voice mailbox system are interconnected via a LAN to share data. In addition, even if a specific IPU part fails, the service can be provided using the shared data, and the changed subscriber information can be provided through the LAN even after the failure is recovered, thereby ensuring the continuity of the service.

Description

Multiplexing Method and Apparatus for Voice Mailbox Service System

The present invention relates to a multiplexing method and apparatus for a voice mail service system, and more particularly, to a multiplexing method and apparatus for a multiplex voice mail service system for providing an uninterrupted service even when a failure occurs in the IPU by multiplexing the IPU. .

The voice mailbox service system stores the voice signal to be transmitted to the subscriber by calling the number of the voice mailbox service subscriber, and then receives the voice message by reproducing the stored voice signal by entering a password after the subscriber of the voice mailbox service calls the subscriber's number. Voice signal storage and playback service system. In order to provide the service as described above, the exchange serves to deliver subscriber call number and voice mailbox service request information to the voice mailbox service system. The voice mailbox system is connected to the exchange through a relay line to receive the required subscriber call number and service request. If the subscriber is a valid subscriber, the voice mailbox system provides services such as storage and playback of voice signals according to the user's request. After that, changes to the subscriber's subscriber information are saved.

1 is a block diagram of a voice mail service system according to the prior art.

The conventional voice mailbox service system is composed of an information processing unit (IPU) unit 2, a hard disk driver (H.D.D.) redundancy unit 3, and a hard disk driver (H.D.D.) array unit 4.

The IPU unit 2 receives the subscriber's call number and voice mailbox service request through the relay line connected to the switch 1, reads subscriber information and the like from the HDD redundancy unit 3, and in the case of a valid subscriber, the user desires to provide the desired service. When the service is completed, the subscriber information, which has a relatively small amount of data such as subscriber validity and subscriber mailbox structure and needs to provide a fast service, is stored in RAM (Random Access Memory), which is a fast storage device in the IPU 2. Information having a relatively large amount of data, such as a voice signal, is stored in the H.D.D. redundancy unit 3 through a small computer system interface (SCSI) bus. The contents stored in the H.D.D. redundancy unit 3 are also duplicated and stored in the H.D.D. array unit 4 via a SCSI (Small Computer System Interface) bus. After a certain time has elapsed, the contents of the HDD redundancy unit 3 and the HDD array unit 4 are updated with the contents stored in the RAM of the IPU unit 2 to update the information of the IPU unit 2 and the HDD redundancy unit 3 and the HDD array. The information in section 4 is made to match. As described above, matching the subscriber information after a certain period of time means that the structure of the subscriber's voice mailbox is changed whenever the user's voice mailbox service is provided, and the validity of the subscriber may be changed from time to time. This is because the service needs to be provided promptly whenever there is a demand. Since updating the data in the HDD redundancy unit 3 takes time, the subscriber information stored in the HDD redundancy unit 3 is not updated every time the subscriber information is changed, but temporarily stored in the RAM of the IPU unit 2, Update the subscriber information of the HDD redundancy unit 3 and the HDD array unit 4 with contents stored in the RAM of the IPU unit 2 at regular intervals so that the information of the IPU unit 2 and the HDD redundancy unit 3 and the HDD array unit are updated. The subscriber information of (4) is made to match.

In the prior art as described above, since a redundant H.D.D. part stores the voice signal stored at any time, the voice signal stored in another H.D.D. can be referred to even if a problem occurs in one H.D.D. However, if a failure occurs in the IPU unit before updating the H.D.D. unit with the subscriber information stored in the IPU unit, the latest subscriber information stored in the RAM in the IPU unit is lost.

The present invention is to solve the problems of the prior art as described above, multiplexing the voice mailbox service system using a plurality of IPU units and the IPU units in the multiplexed voice mailbox system are interconnected through a local area network (LAN) SUMMARY OF THE INVENTION An object of the present invention is to provide a multiplexing method and apparatus for voice mailbox service that allow data to be shared so that a service can be provided using shared data even when a specific IPU unit fails.

1 is a block diagram of a conventional voice mailbox service system;

2 is a block diagram of a redundant voice mailbox service system according to an embodiment of the present invention;

3 is a detailed configuration diagram of each IPU unit in FIG. 2; FIG.

Explanation of symbols on the main parts of the drawings

1,10: Exchanger 2,20,30: IPU unit

3,40: H.D.D.redundant part 4,50: H.D.D.array part

31: main control part 32: relay line matching unit

33: RAM34: LAN matching unit

35: SCSI bus match

The multiplexing method of the voice mailbox service according to the present invention for achieving the above object is multiplexed with two or more IPU units that temporarily store subscriber information such as subscriber mailbox structure and subscriber validity, and the plurality of IPU units It is characterized in that the subscriber information stored in each IPU unit to share with each other by connecting via a LAN.

In addition, the multiplexing apparatus of the voice mailbox service system according to the present invention for achieving the above object stores the voice signal in the HDD unit or reproduces the voice signal from the HDD unit in accordance with the subscriber number and service request belonging to the first system. A first IPU unit configured to temporarily store changed subscriber information after the service is finished; And a second IPU unit for storing a voice signal or reproducing a voice signal from the HDD unit in accordance with the subscriber number and service request belonging to the second system, and temporarily storing the changed subscriber information after the service is finished. The 1IPU unit and the second IPU unit are connected via a LAN, and share subscriber information of the first system and subscriber information of the second system which are temporarily stored.

DETAILED DESCRIPTION Hereinafter, a multiplexing method of a voice mail service system and an apparatus thereof according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram of a redundant voice mailbox service system according to an embodiment of the present invention.

The apparatus shown in FIG. 2 is a first dual unit 20, a second dual unit 30, an HDD dual unit 40 for storing voice signals inputted from the respective IPU units, and the HDD for duplication of a voice mailbox system. It includes an HDD array 50 for storing the data stored in the redundant unit 40 redundantly. Each of the IPU units is connected to each other via a LAN to share stored data.

In the exemplary embodiment of the present invention illustrated in FIG. 2, the redundant voice mailbox service system divides a subscriber group into a first system group and a second system group, so that a subscriber belonging to the first system group is connected to the first IPU unit 20. FIG. The subscribers belonging to the second system group are mainly processed by the second IPU unit 30, but both the IPU units 20 and 30 share the subscriber information via the LAN. If this occurs, the IPU unit that does not fail temporarily processes the subscriber of the failed IPU unit.

If any user requests voice mailbox service, the exchange 10 determines the subscriber group from, for example, the station number of the calling subscriber's calling number. As a result of the determination, if the required subscriber belongs to the first system group, the subscriber number and service request are sent to the first IPU unit 20 through the first system relay line, and if the required subscriber belongs to the second system group, the second system relay line is sent. Sends a signal to the second IPU unit 30 through.

Each IPU unit 20, 30 receives the subscriber number and the service request signal received from the switch 10, reads subscriber information from the HDD redundancy unit 40, and provides a service desired by the user in the case of a valid subscriber, When the service is completed, the subscriber information which requires a relatively small amount of data such as subscriber validity, subscriber mailbox structure, etc. and needs to provide fast service is stored in RAM (Random Access Memory), which is a fast storage device in the IPU 20,30. Information having a relatively large amount of data such as a voice signal is stored in the H.D.D. redundancy unit 40 via a small computer system interface (SCSI) bus. The contents stored in the H.D.D. redundancy unit 40 are also duplicated and stored in the H.D.D.array unit 50 through a small computer system interface (SCSI) bus. After a certain time has elapsed, the contents of the HDD redundancy unit 40 and the HDD array unit 50 are updated with the contents stored in the RAM of each IPU unit 20 and 30 to update the information of the IPU units 20 and 30 and the HDD redundancy unit ( 40) and the information of the HDD array unit 50 is made to match.

In the present invention, it is not necessary to use different H.D.D according to each system. However, an area for storing information corresponding to each system is separately allocated inside the H.D.D. (40, 50).

Assume that a failure occurs in any one of the IPU units during the operation of the redundant voice mail service system as described above. For example, it is assumed that a failure occurs in the first IPU unit 20. The fact that the first IPU unit 20 has failed is transmitted to the exchange 10 via a relay line, and also to the second IPU unit 30 via the LAN. As such, when the first IPU unit 20 fails, the switch 10 transmits the subscriber number and the service request signal belonging to the first system group to the second IPU unit 30, and the second IPU unit 30 transmits the LAN. Through the subscriber information data belonging to the first system group shared with the first IPU unit 20, the first system area of the HDD redundancy unit 40 is accessed to store or reproduce voice information. Also, when the service is completed, the subscriber information belonging to the changed first system group is stored. Until the first IPU unit 20 is restored, the second IPU unit 30 must also process service requests for subscribers belonging to the first system group as well as subscribers belonging to the second system group. The reaction rate can be slow. However, even if the first IPU unit 20 is damaged, not only can the service be provided correctly by using the subscriber information temporarily stored in the first IPU unit 20, but also after the IIPU unit 20 is recovered, the first IPU unit is restored. During the failure of 20, since the second IPU unit 30 can receive the changed subscriber information and the like through the LAN, the continuity of the service is ensured.

FIG. 3 is a detailed configuration diagram of each IPU unit of FIG. 2 for performing the above operation.

As shown, each IPU unit 20, 30 includes a relay line matching unit 32 for receiving a subscriber number and a service request signal from the exchange via the relay line; A SCSI bus matching section 35 for storing or reproducing a voice signal from the H.D.D. redundancy section 40 via the SCSI bus in accordance with the subscriber number and the service request signal received from the relay line matching section 32; A RAM 33 for temporarily storing changed subscriber information after the service is completed; A LAN matching unit 34 for transmitting subscriber information stored in the RAM 33 to other IPU units via a LAN; And a main controller 31 controlling the RAM 33, the LAN matching unit 34, and the SCSI bus matching unit 35 according to the subscriber number and the service request signal received from the relay line matching unit 32. .

As described above, the multiplexing method and apparatus of the voice mailbox service system according to the present invention multiplex the voice mailbox service system using a plurality of IPU units, and the IPU units in the multiplexed voice mailbox system are interconnected via a LAN to provide data. In addition to providing services using shared data even in the event of a failure in a specific IPU unit, the changed subscriber information can be provided through the LAN even after the failure is recovered. Can be.

Claims (3)

In the multiplexing method of the voice mailbox service system, It is characterized by multiplexing two or more IPU units temporarily storing subscriber information such as subscriber mailbox structure and subscriber validity, and connecting the plurality of IPU units via a LAN to share subscriber information stored in each IPU unit. To multiplex the voice mailbox service system. In the multiplexing apparatus of the voice mailbox service system for storing and reproducing voice signals that can be accessed by service subscribers divided into each system group in the H.D.D. A first IPU unit for storing a voice signal in the H.D.D. unit or reproducing a voice signal from the H.D.D. unit in accordance with the subscriber number and the service request belonging to the first system and temporarily storing the changed subscriber information after the service is finished; And a second IPU unit for storing a voice signal or reproducing a voice signal from the HDD unit in accordance with the subscriber number and service request belonging to the second system, and temporarily storing the changed subscriber information after the service is finished. And a first IPU unit and a second IPU unit are connected via a LAN to share subscriber information of the first system and subscriber information of the second system which are temporarily stored. 3. The IPU unit of claim 2, wherein the IPU unit of each system A relay line matching unit receiving a subscriber number and a service request signal from the exchange through the relay line; A SCSI bus matching unit for storing or reproducing a voice signal from an H.D.D. unit via a SCSI bus according to a subscriber number and a service request signal received from the relay line matching unit; RAM for temporarily storing the changed subscriber information after the service is completed; A LAN matching unit for transmitting subscriber information stored in the RAM to another IPU unit via a LAN; And And a main control unit controlling the RAM, the LAN matching unit, and the SCSI bus matching unit according to the subscriber number and the service request signal received from the relay line matching unit.

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