KR100278803B1 - Apparatus and method for processing message in voice mail system - Google Patents

Abstract

In the message processing apparatus of the voice processing system according to the present invention, a plurality of line interface units each include a SCSI control unit, and the SCSI control units share a message storage unit through a local bus, and a line interface unit is a system bus when a call occurs on a telephone line. Notify the system control unit through, and in accordance with the command of the system control unit SCSI control unit accesses the message storage unit through the local bus, characterized in that for processing voice data.

Description

Message processing device and method of voice processing system {APPARATUS AND METHOD FOR PROCESSING MESSAGE IN VOICE MAIL SYSTEM}

The present invention relates to an apparatus and method for processing a message in a voice processing system, and more particularly, to an apparatus and method for traffic control of a voice message.

1 is a diagram showing the configuration of a general speech processing system, wherein the control unit 111 is a master processing unit (MPU) for controlling the overall operation of the speech processing system. The SCSI controller 114 is connected to a system bus and generates a control signal for recording and reading voice data to the message storage 115 under the control of the controller 111. The message storage unit 115 stores voice data received under the control of the SCSI controller 114. The message storage unit 115 may use a hard disk. The line interface unit 113 is connected between an external telephone line and a system bus to perform a connection with the telephone line, and restores and outputs voice data received when the line is connected. The input / output unit 112 is connected to the system bus and is responsible for communication between the voice processing system and an external host terminal.

Referring to the operation of the voice processing system as shown in FIG. 1, when a call is connected through the line interface 113, the controller 111 is notified of the call connection, and the controller 111 detects a call connection and sends a corresponding command to the line interface unit 113. Output to Then, the line interface unit 113 outputs voice, facsimile or general data received through the telephone line under the control of the controller 111 on the system bus, or receives data on the system bus and outputs the data on the telephone line. The SCSI controller 114 is connected to the system bus and is responsible for data transfer from the line interface unit 113 to the message storage unit 115 or from the message storage unit 115 to the line interface unit 113.

In the voice processing system as described above, when the system is operated and operated, most of the operations performed by the voice processing apparatus are to access the message storage unit 115. The voice processing system mainly stores the voice, facsimile and general data applied from the telephone line in the message storage unit 115, and accesses and transmits the information through the telephone line upon request of the subscriber.

However, in the conventional voice processing system as described above, all data is transferred through the system bus, which causes a bottleneck of bus traffic. At this time, among the data transmitted through the system bus is a lot of data that does not have to go through the system bus. Therefore, the conventional voice processing system is not a problem in the case of the service when the number of telephone lines is small and the type of service is small, but as the number of telephone lines increases, the limited performance of the system bus can not handle much traffic. It is an obstacle to large capacity.

Accordingly, an object of the present invention is to provide an apparatus and method for efficiently processing voice messages by reducing message traffic of a system bus in a voice processing system.

Another object of the present invention is to provide a control function of a message storage unit directly in a line interface of a voice processing system so as not to go through the system bus during data transmission, thereby reducing the traffic of the system bus and simplifying the data flow. In providing.

It is still another object of the present invention to provide an apparatus and a method for allowing a message interface of a voice processing system to be shared by line interfaces so that a jurisdiction message store of the line interface can be accessed from another line interface when a line interface unit fails.

In a message processing apparatus of a voice processing system for achieving the above objects, a plurality of line interface units each include a SCSI control unit, and the SCSI control units share a message storage unit via a local bus, and a line interface unit when a call is generated on a telephone line. Notify the system control unit through a system bus, characterized in that the SCSI control unit processes the voice data by accessing the message storage unit via the local bus in accordance with the command of the system control unit.

1 is a block diagram of a general speech processing system.

2 is a diagram illustrating a configuration of a speech processing system according to an embodiment of the present invention.

3 is a diagram showing a first configuration example of the line interface section in FIG. 2; FIG.

FIG. 4 is a diagram showing a second configuration example of the line interface unit in FIG. 2; FIG.

5 is a flowchart illustrating a process of processing a voice message in a voice processing system according to an embodiment of the present invention.

6 is a flowchart illustrating a process of processing a voice message in the event of a failure of one line interface in the voice processing system according to an exemplary embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating a configuration of a voice processing system according to an exemplary embodiment of the present invention, and shows a case where two line interface units are provided.

The control unit 211 is a master processing unit (MPU) for controlling the overall operation of the speech processing system. The line interface unit 213 is connected between the external telephone line and the system bus 251. The line interface unit 213 is in charge of the connection with the telephone line to compress and encode the voice data received at the line connection to reduce the amount of information or to convert the compressed data into the original voice. Restore the data and output it. The SCSI controller 214 is embedded in the line interface unit 213 and generates a control signal for recording and reading voice data in the message storage unit 215. The message storage unit 215 is connected to the SCSI controller 214 via a local bus 252 and stores voice data received under the control of the SCSI controller 214. In addition, the local bus 252 is connected so that each SCSI controller 214 shares the message storage units 215a and 215b, where the message storage units 215a and 215b use a hard disk. The input / output unit 212 is connected to the system bus 251 and is responsible for communicating with the voice processing system and an external host terminal.

Referring to FIG. 2, the line interface unit 213 has a SCSI control unit 214 therein. The control unit 211 controls the entire system and takes care of the events occurring in each board. That is, various events input from the input / output unit 212 are processed, and events input from the line interface unit 213 are also processed. In this case, if the input / output processing is configured in the control unit 211, the system may be configured without the input / output 212.

Looking at the call processing process in the voice processing system according to an embodiment of the present invention, first, when a call occurs in the telephone line, the line interface unit 213 detects this and delivers an event to the control unit 211, the control unit 211 Transfers the drive of the SCSI controller 214 to the line interface unit 213 by a command. Then, the line interface unit 213 drives the SCSI controller 214 provided therein to access the message storage unit 215 having jurisdiction over the local bus 252. Then, the data of the message storage unit 215 can directly input and output the external line through the local bus 252, thereby significantly reducing the traffic of the system bus 251.

In addition, the message storage unit 215 is to be shared by the line interface (213a, 213b), even in the event of failure of one line interface (213a or 213b), the message storage unit (213a or 213b) has jurisdiction over the message storage unit ( 215b or 215a) can be accessed. That is, at all times, each line interface unit accesses only a message storage unit which has jurisdiction over each other, but when one line interface unit fails, another normal line interface unit also accesses the jurisdiction message storage unit of the fault line interface unit. This is also limited to the normal recovery of the failed line interface part.

FIG. 3 is a diagram of a first embodiment showing the internal configuration of the line interface unit 213 in FIG. Referring to FIG. 3, the CPU311 controls the overall operation of the line interface unit 213. The memory 312 is accessed under the control of the CPU311, and includes a ROM for storing a program for controlling the operation of the line interface unit 213, a RAM for temporarily storing data generated during program execution, and the like.

The DSP314 is connected between the telephone line 253 and the CPU311, and detects a call on the telephone line 253 to interface with the CPU311. The ADPCM 312 is connected between the telephone line 253 and the CPU 311, compresses and outputs PCM voice data received from the telephone line 253 to ADPCM data, and converts the ADPCM data into PCM data and outputs the data on the telephone line 253. . A dual port memory (DPM) 315 is connected between the CPU 311 and the system bus 251 and functions to interface a control command between the control unit 211 and the CPU 311.

The SCSI controller 214 shares the message storage unit 215, and stores the compressed voice data output from the ADPCM313 in the jurisdiction message storage unit 215 under the control of the CPU 311, or reads the compressed voice data stored in the jurisdiction message storage unit 215. Output to ADPCM313.

Referring to the operation of the line interface unit 213 having the configuration as shown in FIG. 3, when a call is input through the telephone line 253, the DSP314 detects this and notifies the CPU311. Then, the CPU311 records the call detected by the DSP314 in the DPM315, and the controller 211 accesses the DPM315 through a system bus 215 to detect that the call is generated. Then, the control unit 211 again writes the processing command according to the call generation to the DPM315 via the system bus 251, and the CPU311 receives the command code of the control unit 211 recorded in the DPM315 to perform the next operation.

At this time, when the calling subscriber makes a recording request, the CPU 311 directly drives the SCSI control unit 214 in the line interface unit 213 according to the command of the control unit 211. The SCSI controller 214 records the voice message received by the local message storage unit 215 via the local bus 252. In addition, even when the calling subscriber requests the listening of the recorded message, the CPU311 directly drives the SCSI control unit 214 in the line interface unit 213 according to the command of the control unit 211. Then, the SCSI controller 214 accesses the voice message recorded in the jurisdiction message storage 215 through the local bus 252, which is extended through the ADPCM313 and output on the telephone line 253.

As described above, the line interface unit 213 has a SCSI controller 214 therein, and the SCSI controller 214 has a structure in which the message storage unit 215 is shared through the local bus 252. Accordingly, the line interface unit 213 may also access the message storage unit 215 under the control of another line interface unit through the local bus 252. The line interface unit 213 includes a DMP315 to interface with the controller 214 through the system bus 251. Therefore, when a call is generated on the telephone line, the CPU 311 notifies the controller 211 and records the voice message received by the message storage unit 215 or accesses and outputs the recorded voice message according to the command of the controller 211. .

4 is a diagram illustrating still another configuration of the line interface 213 of FIG. 2 and has a structure similar to that of FIG. In the line interface unit 213 having the structure as shown in FIG. 4, the DSP314 includes ADPCM software therein. Accordingly, the DSP314 of the line interface unit 213 having the structure as shown in FIG. 4 detects a call on the telephone line 253 and compresses the received voice data or expands the output compressed voice data.

FIG. 5 is a diagram showing the control flow of the SCSI controller 214 in the voice processing system having the structure as shown in FIGS. 2 to 4, and shows the flow of events when a call is generated. In the embodiment of the present invention, the CPU311, the SCSI control unit 214 and the control unit 211 will be described based on the control operation.

Referring to FIG. 5, when a ring occurs on the telephone line 253, the CPU 311 detects it through the DSP 314 in step 512, and records call generation information in the DPM 315 in step 514. Then, the control unit 211 accesses the call generation information recorded in the DPM315 through the system bus 251, and outputs a hook-off command to the DPM315. Then, the CPU311 receives the hookoff command recorded in the DPM315 in step 516, and then records the acknowledgment message of the hookoff command in the DPM315 in step 518. Then, the control unit 211 accesses the hookoff confirmation information recorded in the DPM315 through the system bus 251, and outputs a play or record command to the DPM315.

In step 520, the CPU311 receives a play or record command output from the controller 211, and then outputs a SCSI command to the SCSI controller 214 in step 522. Then, the SCSI controller 214 analyzes the received SCSI command and checks the playback or recording mode, and then records the received voice data in the message storage unit 215 or records the voice data recorded in the message storage unit 215 according to the mode. Read and output. When the above operation is performed, the line interface unit 213 records the message received through the telephone line or reproduces the recorded message and outputs the recorded message on the telephone line.

At this time, the SCSI controller 214 outputs to the CPU311 the termination state of the mode in the form of a SCSI command when message recording is completed or playback is completed. The CPU 311 detects this in step 524, and notifies the DPM315 that the recording mode is completed or the playback mode is completed in step 526. Then, the control unit 211 detects this through the system bus 251 as described above, and records the hook-on command in the DPM315. The CPU311 detects this in step 528 and then controls the DSP314 to perform the hook-on processing operation.

FIG. 6 illustrates an event flow when a line interface that manages the call does not provide a service (overload or self failure) when a call occurs in the voice processing system having the structure as shown in FIGS. 2 to 4. . In the present embodiment, the CPU311, the SCSI control unit 214 and the control unit 211 will be described based on the control operation.

Referring to FIG. 6, when a ring occurs on the telephone line 253, the CPU 311a detects it through the DSP314a in step 612, and records the call generation information in the DPM315a in step 614. In this case, when the line interface unit 214a is not in the situation of processing the call, the CPU311a records a failure (or overload) of the line interface 214a in the DPM315. Then, the controller 211 accesses the call generation information recorded in the DPM315a and the failure occurrence information (overload information) of the line interface 214a through a system bus 251, and outputs a hook-off command to the DPM315b. . Then, the CPU311b receives the hookoff command recorded in the DPM315b in step 616, and then, in step 618, the CPU311b records an acknowledgment message of the hookoff command in the DPM315b. Then, the control unit 211 accesses the hookoff confirmation information recorded in the DPM315b through the system bus 251, and outputs a play or record command to the DPM315b.

Then, the CPU311b receives the playback or recording command outputted from the controller 211 in step 620 and then outputs a SCSI command to the SCSI controller 214a in step 622. Then, the SCSI controller 214a analyzes the received SCSI command and checks the playback or recording mode. Then, the SCSI controller 214a records the received voice data in the message storage unit 215a or records the voice data recorded in the message storage unit 215a. Read and output. When the above operation is performed, in conclusion, the line interface unit 213b records the message received through the telephone line in the message storage unit 215a or reproduces the recorded message on the telephone line.

At this time, the SCSI controller 214a outputs the termination mode of the mode in the form of a SCSI command when the message recording is completed or the reproduction is completed, to the CPU311b. The CPU311b detects this in step 624, and notifies the DPM315b that the recording mode is completed or the playback mode is completed in step 626. Then, the control unit 211 detects this through the system bus 251 as described above, and records the hook-on command in the DPM315b. Then, the CPU311b detects this in step 628 and controls the DSP314b to perform a hook-on processing operation.

As described above, the present invention has a structure in which a SCSI control unit is provided in a line interface unit of a voice processing system, each SCSI control unit shares a message storage unit through one local bus, and controls the overall operation of the system. Under the command, the SCSI controller processes a voice message by accessing a message storage unit connected to a local bus. Therefore, since the voice messages are not transmitted through the system bus, the bottleneck of the traffic on the system bus can be eliminated, and thus, a large capacity of the voice processing system can be realized. In addition, when one line interface is overloaded or failed, the message storage can be accessed through the other line interface, thereby increasing the efficiency of the system.

Claims (3)

In the message processing apparatus of the speech processing system, A plurality of line interface units each have a SCSI control unit, and the SCSI control units share a message storage unit through a local bus, and when a call occurs on a telephone line, the line interface unit notifies the system control unit through the system bus and according to the command of the system control unit. And a SCSI controller processes voice data by accessing the message storage unit through the local bus. In the message processing method of the voice processing apparatus in which a plurality of line interface units each have a SCSI controller, and the SCSI controllers share a message storage unit through a local bus, Notifying a system control unit through a system bus when a call occurs on the telephone line; Determining an operation mode of the SCSI controller under the control of the system controller, accessing a local message store according to the determined mode, and processing a voice message through a local bus; And the SCSI controller notifying the system controller through the system bus when the operation mode ends, thereby terminating a call processing. The method of claim 2, And performing a call processing by accessing another normal line interface unit to a jurisdiction message storage unit of the failing line interface unit under a command of the system control unit when a failure occurs in any one of the plurality of line interface units. Message processing method of a voice processing system characterized in that.

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