KR100247026B1 - Voice mailing appartus - Google Patents

Abstract

The technical field to which the invention described in the claims belongs.

It relates to a voice mail device.

I. The technical problem that the invention is trying to solve

It is to provide a voice mail device that solves the problem of flexibility by adopting the SCSA (Signal Computing System Architecture) bus.

All. Summary of Solution of the Invention

The present invention provides a voice mail device connected to a subscriber line, and performs a control for providing a voice service in the voice mail device, controls the provision of a data service, and performs another service when the voice service is terminated. A central processing unit for controlling the voice mail device, a memory for storing data separately for each subscriber, a disk control device for controlling the storage and reading of data in the memory for each subscriber, and a plurality of public network subscribers T1 / E1 lines for transmitting and receiving data and voice signals, and tone signals received from subscribers connected directly to the T1 / E1 lines and detecting the tone signals received from subscribers. A voice board for performing a voice service, connecting a call to a data service device, and a voice synthesis board for synthesizing and outputting multiple voice signals; A data service board receiving data through the voice board and performing data service according to the voice board; control signals and data between the central processing unit, the disk control unit, the voice board, the voice synthesis board, and the data service board; And a bus bus for transmitting and receiving a bus and a bus bus for connecting a call connected to the voice board to the voice synthesis board or the data service board to perform service switching.

la. Important uses of the invention

Used for voice mail devices.

Description

Voice mail device {VOICE MAILING APPARTUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice mailing system (hereinafter referred to as "VMS"), and more particularly to a VMS employing a Signal Computing System Architecture (hereinafter referred to as SCSA) BUS.

VMS provides various services such as voice mail, fax mail, and answering service to telephone and fax users in connection with public telephone networks or branch exchanges.

1 shows a configuration diagram of a conventional VMS.

Referring to the drawings, reference numeral 10 denotes a central processing unit (hereinafter referred to as "CPU"), which has a memory that stores a program for executing a VMS, and controls overall operations of the VMS by the program. .

21 is an auxiliary memory device, which is composed of a floppy disk driver (FDD), a cartridge tape driver (CTD), and a hard disk driver (HDD), and provides voice or fax data for each subscriber. And so on. 20 is a disk control unit (hereinafter referred to as "DCU"), which is connected to the auxiliary memory device 21 by a SCSI (Small Computer System Interface: referred to as "SCSI") bus (BUS), The secondary storage device is controlled to store and read data. 30 denotes a local area network (hereinafter referred to as a "LAN"), and interfaces with systems when interworking. 60 is a voice board, which detects a tone, and applies a differential code pulse modulation (Pulse Code Modulation) signal, which is a voice signal. The signal is converted into an ADPCM signal, compressed, and output to the DCU 20 to process 8 ports. In addition, the voice board 60 receives the ADPCM signal, which is the voice signal stored in the auxiliary memory device 21, through the DCU 20 and extends the PCM signal to the T1 / E1 line through the T1 / E1 interface unit 40. Send to (50). 40 is a tee (T) 1 / E (1) interface unit connected to the voice board 60 through an ST bus including 32 time slots, and is connected to the T1 / E1 line 50 as a subscriber line. The tone signal and the PCM signal which are connected and input from the T1 / E1 line 50 are output to the voice board 60. The CPU 10, the DCU 20, the LAN 30, the T1 / E1 interface 40, and the voice board 60 are connected by a Versa Module Euro (hereinafter referred to as a "VME") bus. do.

This conventional voice board 60 processes eight ports. Therefore, four voice boards 60 are connected to one ST bus connected to the T1 / E1 interface unit 40, and each voice board 60 is allocated with eight time slots for processing. Therefore, in order to increase the number of ports, the voice board 60 must be increased by four units because another ST bus must be allocated. And once a board is connected to one ST bus, it is impossible to connect to and use another ST bus.

In order to perform the fax function further, a fax board must be mounted. In order to use the fax service, a user needs to call the fax board. Therefore, in FIG. 1, if there is no fax board on the 1ST bus and the fax board is connected to the 2ST bus, the user cannot receive the fax service without hanging up the phone after receiving the voice service using the voice board connected to the 1ST bus. Therefore, if the user first receives the voice service, and later wants to receive the fax service, there is a problem that the user must use the fax service after the call is disconnected and the fax number is dialed to establish the connection. This problem of flexibility becomes even greater when service needs vary.

It is therefore an object of the present invention to provide a VMS that employs an SCSA bus to solve the problem of flexibility.

In order to achieve the above object, the present invention provides a voice mail device connected to a subscriber line, and performs a control for providing a voice service in the voice mail device, controls the provision of data service, and, if the voice service is terminated, A central processing unit for controlling the voice mail apparatus to perform a service, a memory for storing data separately for each subscriber, a disk control apparatus for controlling the storage and reading of data in the memory for each subscriber; T1 / E1 (T1 / E1) lines connected to a plurality of public network subscribers to transmit and receive data and voice signals, and a tone signal received from a subscriber directly connected to the T1 / E1 lines, and Voice service is performed under the control of the central processing unit, and a voice board for connecting a call to a data service unit and various voice signals are added up. A voice synthesis board for outputting data, a data service board for receiving data through the voice board and performing data service according to the voice board, the central processing unit, the disk control unit, the voice board, the voice synthesis board, and the data; And a bus bus for transmitting and receiving control signals and data between service boards, and a bus bus for performing service switching by connecting a call connected to the voice board to the voice synthesis board or the data service board. .

1 is a block diagram of a conventional voice mail device;

2 is a block diagram of a voice mail apparatus according to an embodiment of the present invention;

3 is a detailed configuration diagram of the voice board of FIG. 2;

4 is a detailed configuration diagram of the fax board of FIG. 2;

5 is a detailed configuration diagram of the voice recognition board of FIG.

6 is a view showing in detail the connection of the SCSA control unit in FIG.

7 is a view showing in detail the connection relationship between the SCSA control unit and the DSP of FIG.

8 is a diagram illustrating time slot allocation of a time slot allocation unit of FIG. 7;

9 is a view showing in detail the connection relationship between the SCSA control unit and the fax modem of FIG.

10 is a flowchart illustrating an embodiment of a service performed by a voice mail apparatus according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In the present invention, the voice board, the fax board, the voice recognition board, and the voice synthesis board employing the SCSA bus, which are connected to the voice board through the ST bus of the conventional T1 / E1 interface unit, are connected to the SCSA bus.

2 is a block diagram of a VMS employing an SCSA bus according to an embodiment of the present invention. Hereinafter, the configuration and operation of the VMS according to the present invention will be described in detail with reference to FIG. 2.

Reference numeral 10 in the figure is a CPU, which has an internal memory that stores a performance program of the VMS, and controls the overall operation of the VMS by the program. 21 is an auxiliary memory device, which is composed of a floppy disk driver (FDD), a cartridge tape driver (CTD), and a hard disk driver (HDD) to store voice data or fax data of subscribers. 20 is a DCU, which is connected to the auxiliary storage device by a SCSI bus (not shown) to control the auxiliary storage device. 30 is a LAN, which connects to another computer or system, and performs interface between systems when interworking with other systems through a network. 50 is a T1 / E1 line which is a subscriber line. 80 shows a voice board with a device for connecting to the SCSA bus, and 90 shows a fax board with a device for connecting to the SCSA bus. Here, only the voice board 80 is directly connected to the T1 / E1 line 50. 100 shows a voice recognition board with a device for connecting to the SCSA bus, 110 shows a voice synthesis board with a device for connecting to the SCSA bus.

Looking at the connection of the bus according to such a configuration as follows. The basic bus that makes up the entire system is the VME bus, which is connected to each board. This transfers data to and from each board. That is, the CPU 10, the DCU 20, the LAN 30, the voice board 80, the fax board 90, the voice recognition board 100, and the voice synthesis board 110 transmit and receive data between boards. In order to transmit and receive a signal for synchronizing with the selection signal, communication is performed by connecting to the VME bus. In addition, the line processing boards 80, 90, 100, and 110, which actually perform the service, are all connected to the SCSA bus in order to provide continuous service in the form of a call between each board according to the present invention. . That is, the line boards are the voice board 80, the fax board 90, the voice recognition board 100, and the voice synthesis board 110, which are connected to the SCSA bus having 2,048 time slots to perform communication. do.

FIG. 3 shows a detailed configuration diagram of the voice board of FIG. 2. Next, the detailed configuration and operation of the voice board will be described in detail with reference to FIG. 3.

Reference numeral 61 denotes a processor, which is connected to a first memory 62 that stores a program for controlling a board to perform a voice function, and controls the voice board as a whole. 64 is a T1 / E1 interface chip, which is controlled by the processor 61 to interface the T1 / E1 line 50 with the SCSA controller 65. 65 is a SCSA control unit, which is connected to the SCSA bus to connect with other boards, and is a device that controls the SCSA bus under the control of the processor 61 provided in the board. The SCSA controller 65 may be configured using a commercially available chip called SC4000. All SCSA controllers attached to the present invention can be configured using the SC4000 chip.

66 is a digital signal processor (hereinafter referred to as "DSP"), which is connected to the SCSA controller 65 and analyzes the tone signal input through the SCSA controller 65, processes the analyzed signal, When a voice signal is received, the PCM signal, which is a voice signal, is converted into an ADPCM signal and compressed. In addition, the DSP 66 expands and outputs the ADPCM signal, which is compressed voice data, to a PCM signal. Here, six DSPs are illustrated in FIG. 3, which may be increased according to a setting. 67 is a memory that stores an execution program of the DSP 66 and temporarily stores data generated during the execution of the program. 63 is a second memory, which is a buffer memory which is connected to the processor 61 and temporarily stores the ADPCM signal output from the DSP 66 before sending it to the auxiliary memory device 21 via the VME bus for storage. In addition, the second memory 63 temporarily stores a signal input from the DCU 20. The processor 61 is connected to the T1 / E1 interface chip 64, the SCSA controller 65, and a plurality of DSP and local (LOCAL) buses. This ensures smooth communication between devices within the voice board.

Figure 4 shows a detailed configuration of the fax board of FIG. Hereinafter, the configuration and operation of the fax board of FIG. 2 will be described in detail with reference to FIG. 4.

Referring to the drawings, reference numeral 71 is a processor, which is connected to a third memory 72 that stores a program for controlling a fax board as a whole to perform a fax function. To control. 74 is an SCSA control unit, which is connected to the SCSA bus in order to connect with other boards, and controls the SCSA bus and the codec 75 under the control of the processor 71 provided in the board. The codec 75 is connected to a fax modem 76 which is a modem for processing fax data, and converts the digital signal input from the SCSA controller 74 into an analog signal and outputs the analog signal to the fax modem 76. In addition, the codec 75 processes an analog fax signal input from the fax modem 76 as a digital signal and outputs the digital signal to the SCSA controller 74. Here, the codec 75 and the fax modem 76 can be changed depending on the setting and are connected in plurality. In addition, the processor 71, the SCSA controller 74, and each modem are connected and communicated with each other through a local bus. Through this, data transmission and reception with each device in the board can be performed. 73 is a fourth memory, and stores or receives data received from the devices connected via the VME bus, such as the other devices CPU 10, DCU 20, LAN 30, etc. of FIG. Shared memory for buffers.

5 is a detailed block diagram of the voice recognition board of FIG. Hereinafter, the configuration and operation of the voice recognition board of FIG. 2 will be described in detail with reference to FIG. 5.

Referring to the drawings, reference numeral 81 is a processor, which is connected to a fifth memory 82 that stores a program for executing a voice recognition execution program, and controls the overall voice recognition board by the program. 84 is an SCSA control unit, which is connected to the SCSA bus in order to connect with another board, and interfaces the SCSA bus with the DSP 86 under the control of the processor 81 provided in the board. Here, the DSP 86 is a DSP for processing speech recognition. The DSP 86 is connected to a memory 85 for storing data for speech recognition, and digitally processes the speech signal input through the SCSA controller 84 to use the speech characteristic. The voice recognition function is performed in comparison with the data of (85). In addition, the DSP and the memory are connected to the SCSA control unit 84 in large numbers according to the setting. The processor 81, the SCSA controller 84, and each of the DSPs are connected and communicated with each other by a local bus. 83 is a sixth memory, which is a shared memory for a buffer shared by the processor 81 and a CPU connected through the VME bus.

6 is a view showing in detail the connection of the SCSA control unit in FIG. Hereinafter, the configuration and operation of the SCSA controller connected to FIG. 3 will be described in detail with reference to FIG. 6.

Referring to the figure, the SCSA control unit 65 operates by receiving a frequency of 65.536 MHz from the oscillator 68. As the oscillator 68, a general crystal oscillator may be used. The T1 / E1 interface chip 64 receives a signal from the T1 / E1 line, extracts a frame synchronization clock of 8 KHz, and outputs the signal to the refresh (REF8K) stage of the SCSA controller 65. In addition, the T1 / E1 interface chip 64 is connected to a T1 / E1 line such as an exchanger, and outputs data input from the T1 / E1 line to the SCSA control unit 65, and inputs from the SCSA control unit 65 to T1. Output to the / E1 line. Here, the SCSA controller 65 receives an 8KHz frame synchronization clock to generate a 2.048 / 4.096 / 8.192MHz clock. The SCSA controller 65 outputs the clock to the corresponding device, transmits and receives data to the DSP 66 according to the output clock, and provides a synchronous clock to all boards connected to the SCSA bus.

FIG. 7 is a diagram illustrating in detail the connection relationship between the SCSA controller and the DSP of FIG. 6. Hereinafter, the connection relationship between the SCSA controller and the DSP shown in FIG. 6 according to the present invention will be described in detail with reference to FIG. 7.

Referring to the figure, the L_FS stage outputs a frame synchronization signal of 8 KHz and the L_CLK stage outputs a 2.048 MHz clock in the SCSA controller 65. The SO_2 stage is a data output stage provided with 32 time slots, and the SI_2 stage is an input stage of data. The time slot allocator 69 is connected to the L_FS terminal to receive a 8KHz frame synchronization signal and a 2.048 MHz clock from the L_CLK terminal to supply frame synchronization signals from DSP # 1 to DSP # 6 and allocate time slots. 8 shows this. FIG. 8 is a diagram illustrating time slot allocation of the time slot allocator of FIG. 7. When the 8KHz frame synchronization signal is input from the L_FS terminal of the SCSA controller, the time slot is allocated by allocating the frame synchronization signals FS1-FS6 to DSP # 1- DSP # 6 in accordance with the frame synchronization signal.

Each of the DSPs 66 (DSP # 1, DSP # 2, ..., DSP # 6) receives a clock and data output from the SCSA controller 65, which receives the clock through a clock stage CLK. Receive the data through the receiving end (RX). The time slot allocator 69 receives the frame synchronization signal according to the corresponding timeslot and processes the data. At this time, the received time slot is the same as the time slot of FIG. When the number of DSPs 66 is changed, the time slot assignment unit 69 also changes the number of timeslots and outputs the number of timeslots accordingly.

9 is a view showing in detail the connection relationship between the SCSA control unit and the fax modem of FIG. Hereinafter, the connection relationship between the SCSA controller and the fax modem shown in FIG. 6 will be described in detail with reference to FIG. 9.

First, the configuration of FIG. 9 is the same as the description of FIG. 7. The codec 75 is connected instead of the DSP of FIG. 7, and the fax modem 76 is connected to each of the codecs instead of the memory of FIG. 7. Transmission and reception of data and transmission and reception of frames are performed in the same manner as in FIG. 7.

When the user requests a fax service, a frame synchronization clock, for example, a clock of 8 KHz is input from the voice board 80 of FIG. 2 to the SCSA controller 74 through the SCSA bus. The SCSA controller 74 then sends a clock to the codec 75 and sends a frame sync signal and clock to the time slot allocator 77. Then, the slot allocator 77 allocates a time slot to the empty codec 75 in accordance with the frame synchronization signal. Accordingly, the fax modem 76 is connected to the codec 75 to perform a fax service.

10 is a flowchart illustrating an embodiment of a service performed by a VMS according to an embodiment of the present invention. Here, a case where the VMS is used in the paging system will be described as an embodiment. Hereinafter, with reference to the configuration of FIG. 2 described above in detail.

When the user makes a call, the tone is input to the voice board 80 through the T1 / E1 line. In operation 100, the voice board 80 detects a tone and outputs the tone to the CPU 10. Then, in step 110, the CPU 10 controls the DCU 20 through the detected tone, reads the first guide message of the corresponding subscriber from the auxiliary memory device 21, and sends it to the voice board 80. Then, the voice board 80 receives it, converts it into a voice signal (PCM signal), and transmits it to the T1 / E1 line. Here, the first guide message is a voice message for guiding a user to select a voice guide message and a service.

The user selects a voice service by operating a corresponding dialing key according to the first guide message. At this time, if the service selected in step 120 is a voice service, the voice board 80 detects the dialing tone and notifies the CPU 10 that the voice service is selected. In response, the CPU 10 proceeds to step 130 according to the voice service selection and performs the voice service.

In operation 140, the CPU 10 checks whether the voice service is terminated. When the voice service is terminated as a result of the test, the CPU 10 controls the DCU 20 to read the second guide message from the auxiliary memory device 21 and send it to the voice board 80. The voice board 80 receives this, converts it to a voice signal, and sends it to the T1 / E1 line. The second guide message is a voice message for guiding a corresponding key to be operated according to the use of another service after the voice service is terminated.

When the user selects the fax service by operating a key according to the second guide message, the voice board 80 detects the dialing tone and outputs it to the CPU 10. Then, the CPU 10 confirms the fax service selection in step 160 and controls the voice board 80 in step 170 to connect the fax board 90. In the voice board 80, the processor 61 receives the control signal from the CPU 10 through the VME bus to control the SCSA controller 65 to disconnect the T1 / E1 line from the DSP 66 and disconnect the SCSA bus. To the fax board (10). Thus, in step 180, the CPU 10 controls the fax board 90 to perform a fax service.

In contrast, if the fax service is not selected in operation 160, the CPU 10 performs a selected service (for example, voice recognition or speech synthesis service) in operation 190.

As described above, the present invention can employ up to 2,048 time slots in conventional limited time slots by employing the SCSA bus, so that even a large capacity system can be flexibly processed.

Claims (6)

In a voice mail device connected to a subscriber line, A central processing unit that performs a control for providing a voice service in the voice mail device, controls the provision of a data service, and controls the voice mail device to perform another service when the voice service is terminated; A memory for storing data separately for each subscriber; A disk control device for controlling the storage and reading of data in the memory for each subscriber; T1 / E1 (T1 / E1) lines connected to multiple public network subscribers to transmit and receive data and voice signals, A voice board connected directly to the tee 1/1 lines to detect a tone signal received from a subscriber, to perform voice service under the control of the CPU, and to connect a call to a data service device; A voice synthesis board for synthesizing and outputting multiple voice signals; A data service board receiving data through the voice board and performing data service according to the voice board; A V bus for transmitting and receiving control signals and data between the CPU, the disk controller, the voice board, the voice synthesis board, and the data service board; And a Scarsa bus configured to connect a call connected to the voice board to the voice synthesis board or the data service board to perform service switching. The method of claim 1, wherein the voice board, A first memory for storing a control program of the voice board; A processor connected to the first memory and performing a control to provide a service for controlling a voice service and switching a set call to another board; A second memory which is a common memory for a buffer connected between the CPU and the Versa module flow path bus; A tee1 / e1 interface chip which extracts and outputs a frame synchronization signal from a signal input from the subscriber line under control of the processor; Under the control of the processor, a clock is generated according to the frame synchronization signal input from the T1 / I1 interface chip to transmit and receive data, provide a synchronization clock to another board connected to the SCSI bus, and block the connected call. The first camera control unit for controlling the connection to the other board without the; Detecting the tone signal received from the T1 / I1 interface chip and informing the processor of the tone signal, and compressing and storing or compressing the received voice signal under control of the processor to read and expand the stored voice signal and output the same. At least two DLs, And a local bus for transmitting and receiving data between the processor, the DSPs, and the SCSI control unit. The method of claim 1, wherein the data service board, Voice mail device, characterized in that the fax board capable of transmitting and receiving image data. The method of claim 3, wherein the fax board, A third memory for storing a control program of the fax board; A processor connected to the third memory and controlling the fax board generally according to the control program; A fourth memory which is a common memory for a buffer connected to the CPU and the Versa module flow path bus; A second SCSI controller configured to make a clock according to the synchronization clock input through the SCASA bus under the control of the processor, transmit and receive data, and output data received through the SCASA bus to codecs; At least two codecs for converting the data input from the second camera controller into an analog signal and outputting the analog signal, and converting the analog signal into digital data and outputting the digital signal to the second camera controller; Fax modems connected in one-to-one correspondence with the codecs and processing analog signals input from the corresponding codecs; And a local bus for transmitting and receiving data between the second camera controller, the fax modems, and the processor. The method of claim 1, And a voice recognition board connected to a Versa module Euro bus (VME BUS) connected to the control unit and simultaneously connected to the Scarsa bus, and encoding and recognizing a voice signal received through the voice board. Voice mail device. According to claim 5, The voice recognition board, A fifth memory for storing a control program of the voice recognition board; A processor connected to the fifth memory and controlling the overall voice recognition board according to the control program; A sixth memory which is a common memory for a buffer connected to the CPU and a Versa module flow path bus; A third SCAS controller which generates a clock according to the synchronization clock input through the SCASA bus under the control of the processor, and transmits and receives data and outputs the DSs to process the data received through the SCASA bus; At least two or more DSPs for encoding and analyzing data inputted from the third camera controller and recognizing the data according to the analyzed value; A memory for temporarily storing data generated when encoding and analyzing data in the DSPs; And a local bus for transmitting and receiving data between the third camera controller, the DSPs, and the processor.

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