KR0135202B1 - Multi-function signal processing device in the full electronic switching system - Google Patents

Abstract

The present invention relates to a signal processing apparatus of an electronic switching system. The present invention provides a protocol for mutual protocol conversion between a terminal and a system connected to a subscriber interface, operation control of the terminal, and R ₂ -MFC signal processing. -law It is a multi-function signal processing device of an electronic switchboard which simultaneously mounts each R ₂ tone data to facilitate economical use and operation of the system.

The exchange system according to the present invention efficiently utilizes the system by accommodating not only the mutual protocol conversion between the subscriber station and the system and the operation control function of the terminal, but also the R ₂ -MFC signal processing function, and uses the data stored in the address area of the ROM. The A-law and μ-law R ₂ signal data can be processed simultaneously for ease of use.

Description

Multifunction Signal Processing Device of Electronic Switching System

1 is a block diagram of a signal processing apparatus of a conventional all-electronic exchange.

2 is a block diagram of a multifunctional signal processing apparatus of an electronic switching system according to the present invention.

3 is a detailed block diagram of the multifunction signal processing apparatus shown in FIG.

4 is a diagram showing the structure of R ₂ -MFC signal data stored in the transmission ROM of FIG.

FIG. 5 is a detailed block diagram of the tone / timeslot control unit shown in FIG.

Explanation of symbols on the main parts of the drawings

20: main control unit 21: system interface unit

22: subscriber control unit 23: communication control unit

24 _{1 to} 24 _n : subscriber interface 25: R ₂ -MFC signal processing control

26: R ₂ signal receiving unit 27: R ₂ signal receiving unit

41: DSP interface unit 42: DSP control unit

43: tone / timeslot control unit 45: ROM

46: DSP47: Transmission ROM

51 delay unit 52 bottle / serial converter

53: system clock interface 54: parallel bus interface

61: counter 62: first register

63: second register 64: multiplexer

65: RAM

The present invention relates to a signal processing apparatus of an electronic switching system, and in particular, provides a protocol conversion between each terminal and a system connected to a subscriber interface, an operation control of the terminal, and a R ₂ -MFC signal processing function. μ-law This is a multi-function signal processing device of an electronic switching system which simultaneously mounts each R ₂ tone data to facilitate economical use and operation of the system. I e-exchanger in the prior, as shown in FIG. 1, the main controller 10, a system interface unit 11, the subscriber controller 12, communication control section 13 and a plurality of subscriber interface units (14 ₁ ~14 _a digital subscriber matching device consisting of _n ); The R ₂ -MFC signal processing apparatus each consisting of the main control unit 20, the system interface unit 16, the R ₂ -MFC signal processing control unit 17, the R ₂ signal transmitting unit 18, and the R ₂ signal receiving unit 19, respectively. Separately operated, R ₂ -MFC signal processing device is equipped with ROM which stores A-law and μ-law type data separately.

Therefore, in order to provide the R ₂ -MFC signal processing function in the conventional all-electronic exchange, a separate R ₂ -MFC signal processing device as well as a digital subscriber device must be provided and transmit ROM of A-law and μ-law according to the usage environment. The use of all-electronic exchanges is inefficient because it needs to be replaced by the manual maintenance of the maintainer, and the transmission ROM is manually replaced to transmit and receive signal data in the form of A-law and μ-law depending on the usage environment. There was a problem inconvenient to use.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to increase the efficiency of mutual protocol conversion and operation control of each terminal between a subscriber station and a system connected to each subscriber interface of an electronic switchgear, and R _It supports simultaneous _2- MFC signal processing, and simultaneously supports A-law and μ-law tone data through a single transmit ROM to effectively use an all-electronic exchange system.

The characteristics of the present invention for achieving the above object is a main control unit for controlling the overall operation of the use of the system, such as the conversion of the protocol between each terminal and the system, the operation control of the terminal and the R ₂ -MFC signal processing, and the digital subscriber A system interface for interfacing data transmitted and received between the matching device and the R ₂ -MFC signal processing device, and a subscriber interface for interfacing voice signals and data signals transmitted and received with the subscriber terminal by connecting respective user terminals connected to the communication network. And a communication control unit for controlling voice and data transmission and reception of each subscriber station connected to the subscriber interface unit, and a communication protocol between the subscriber station connected to the subscriber interface unit and the system for controlling the overall operation of the digital subscriber matching device. Interconversion processing Applied from the control unit and the character, and R ₂ -MFC signal processing control unit connected to the system interface unit for controlling the overall operation R ₂ for the treatment of -MFC tone signal transmitted to the subscriber terminal side, the signal processing control unit R ₂ -MFC R ₂ and signal transmitting unit for transmitting the R ₂ -MFC tone signal which are compressed according to a control signal to the subscriber terminal side that, with a R ₂ signal receiving unit for receiving a detection signal from the other station -MFC R ₂ supplied from the subscriber station It provides a multi-function signal processing device of an all-electronic exchange.

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

2 is a block diagram of the multi-function signal processing apparatus of the electronic switching system according to the present invention, FIG. 3 is a detailed block diagram of the multi-function signal processing apparatus shown in FIG. 2, and FIG. 4 is an R ₂ stored in the transmission ROM of FIG. -A diagram showing the structure of MFC signal data. 5 is a detailed block diagram of the tone / time slot control unit shown in FIG.

As can be seen in FIG. 2, the multi-function signal processing apparatus of the electronic switching system according to the present invention includes a main controller 20, a system interface unit 21, a subscriber controller 22, a communication controller 23, and a plurality of a subscriber interface unit _{(24 1 -24 N), R} 2 -MFC signal processing control part (25), R ₂ signal transmission unit 26 and the signal R ₂ through interaction receiving unit 27, the main control section 20 and each of the terminals It controls the overall operation of the system, such as the inter-protocol conversion between the systems, the operation of the terminal and the R ₂ -MFC signal processing. The system interface unit 21 is a digital subscriber matching device consisting of a subscriber control unit 22, a communication control unit 23, and a plurality of subscriber interface units 24 _{1 to} 24 _N , and an R ₂ -MFC signal processing control unit 25 and R. _It is responsible for the interfacing of data transmitted and received between the R ₂ -MFC signal processing apparatus comprising the _two signal transmitter 26 and the R ₂ signal transmitter 27. A plurality of subscriber interface units (24 ₁ -24 _N) is connected to each user terminal connected to the communication network interfaces to the subscriber terminal and the audio signal and a data signal to be transmitted and received. Communication control unit 23 controls voice and data transmission and reception for each subscriber station connected to the subscriber interface unit (24 ₁ ~24 _N). The communication control unit 23 controls the overall operation of the digital subscriber matching device and converts the communication protocol between each subscriber station connected to the subscriber interface units 24 _{1 to} 24 _N and the system. The R ₂ -MFC signal processing control unit 25 is connected to the system interface unit 21 and controls the overall operation for processing the R ₂ -MFC tone signal transmitted to the subscriber terminal side. The R ₂ signal transmitter 26 compresses and stores the R ₂ -MFC tone data signal as a digital signal, and compresses the R ₂ -MFC tone signal according to a control signal applied from the R ₂ -MFC signal processing controller 25. Is transmitted to the subscriber station. The R ₂ signal receiver 27 receives and detects the R ₂ -MFC signal of the other station applied from the connected subscriber station.

In addition, a detailed configuration of the multi-function signal processing apparatus according to the present invention is shown in FIG. 3, wherein the R ₂ -MFC signal processing control section 25 includes a DSP interface section 41, a DSP control section 42 and a tone / time. The slot controller 43 is provided, and the R ₂ signal transmitter 26 and the R ₂ signal receiver 27 are equipped with a DSP (Digital Signal Processor) 46, a ROM 45, and a transmit ROM 47. The system interface unit 21 includes a delay unit 51, a parallel / serial conversion unit 52, a system clock interface unit 53, and a parallel bus interface unit 54.

At this time, the system clock interface unit 53 of the system interface unit 21 is connected to the exchange system and is applied from the exchange to match the synchronization of the R ₂ -MFC signal processing and mutual protocol conversion between the system and each subscriber station. The clock signal is applied to each circuit section of the R ₂ -MFC signal processing control section 25. The delay unit 51 delays the digital type R ₂ -MFC tone signal applied from the exchanger for a predetermined time, synchronizes with the system clock, and applies it to the DSP 46 side of the R ₂ signal transmitter 26. do. The DSP interface 41 of the R ₂ -MFC signal processing control unit 25 controls the system according to control signals applied through the address bus AB and the data bus DB and the control bus CB of the main control unit 20. The transmission and reception of the R ₂ tone signal are interfaced in synchronization with the system clock applied from the clock interface unit 53. The DSP controller 42 controls the operation of the DSP 46 for processing the digital type R ₂ tone signal. The ROM 45 stores and stores program data for operation processing of the DSP 46. The transmission ROM 26 stores R ₂ -MFC signal data of 1 to ₁₅ digitally by 200 bytes for each A-law, µ-law, and high level, as shown in FIG. 3.

In addition, the tone / time slot control unit 43 includes a counter 61, first and second registers 62 and 63, a multiplexer 64, and a RAM 65 as shown in FIG. The counter 61 counts the period of the clock signal applied from the system clock interface 53. The first register 62 and the second register 63 buffer data signals of the main controller 20 applied through the data bus DB to adjust the flow of the signals. The multiplexer 64 multiplexes the data signal of the main controller 20 applied from the first register 62 in synchronization with the system clock applied from the counter 61. The RAM 65 temporarily stores the transmission R ₂ -MFC signal multiplexed and applied from the multiplexer 64 at a predetermined address.

Referring to the operation of the present invention having the function as described above is as follows.

Subscriber control section 22 to the subscriber terminal after the subscriber has occurred interface unit (24 ₁ -24 _N) when transmitting data to any subscriber terminal connected to an interrupt indicating a transmittable state to the subscriber terminal side (Interrupt) The data to be transmitted is detected, and the detected transmission data is sequentially recorded in the shift register in the communication control unit 23.

Thereafter, the subscriber control unit 22 selects a port of the parallel interface unit 54 to transmit data through the port selection register in the communication control unit 23, and then transmits predetermined data to the subscriber station through the selected corresponding port.

In addition, when data is transmitted from any subscriber terminal to the subscriber control unit 22 of the system via a trunk line, the data transmitted from the subscriber terminal is generated at irregular intervals, and simultaneously generated at several ports.

However, since the amount of data applied from the subscriber station to the system is very small, the data transmitted from the various ports are simultaneously read and received through software processing. The system clock interface unit of the subscriber interface units 24 _{1 to} 24 _n ( 53 divides the data communication clock applied from the exchange system and generates a reception interrupt between the subscriber station applying the data and the subscriber control unit 22, the subscriber control unit 22 periodically generates a communication control unit according to the interrupt signal. 23) The receiving register in 23) is read to read data received from the subscriber station.

In addition, the operation of the transmission and reception of the R ₂ -MFC signal will be described with reference to FIG. 3.

First, if there is an R ₂ tone signal to be transmitted to the subscriber station side connected to the exchange system in the main control unit 20, the main control unit 20 first selects a timeslot number on which the R ₂ tone signal to be transmitted is transmitted through the address bus AB. As shown in FIG. 4, the signal to be sent to the RAM 65 is selected through the multiplexer 64 of the tone / timeslot control unit 43, and the signal to be sent through the data bus DB is attached. each R ₂ tone data of to to 15 the a-law, μ-law, and the high level and the stored digitized by 200 (h) bytes to the low level to chair carrying the tone signal to the address address of the transmission ROM (47) which The address is stored in the same RAM 65 as the timeslot of the transmission highway TxHW.

Thereafter, when the time slot address address selected from the counter 61 in the tone / time slot control unit 43 synchronized with the clock of 2 MHz and the system clock signal of the frame signal (/ FH) is outputted, it is stored through the multiplexer 64. is sent to (65), RAM (65) is to convert the R ₂ tone signals stored in the address specified address as serial data through the parallel / serial converter 52 through the transmission highway (TxHW) exchanger system side send.

When the R ₂ signal is received from the exchange system through the receive highway RxHW, the delay unit 51 delays a predetermined period in order to synchronize the operation timing of the DSP 46 with the signal, and inputs it to the DSP 46 side. Let's do it. The DSP 46 analyzes the received R ₂ signal according to the program set in the ROM 45, and then simultaneously outputs the R ₂ signal data and the corresponding timeslot in 16 bits through its parallel bus to the DSP interface. Temporarily stored in the register of section 41.

At this time, the main controller 20 periodically reads the R ₂ tone signal stored in the register of the DSP interface 41 in accordance with the synchronization of the system clock applied from the exchange system through the system clock interface 53.

As described in the above description, the exchange system according to the present invention efficiently utilizes the system by accommodating not only the mutual protocol conversion between the subscriber station and the system and the operation control function of the terminal, but also the R ₂ -MFC signal processing function. A-law and μ-law R ₂ signal data can be processed at the same time through the data stored in the address area of, providing convenience.

Claims (5)

In the electronic switching system, a main control unit which controls the overall operation of the use of the system such as mutual protocol conversion between the terminal and the system, operation control of the terminal and R ₂ -MFC signal processing, digital subscriber matching device and R _2- A system interface unit for interfacing data transmitted and received between MFC signal processing apparatuses, a subscriber interface unit for interfacing voice signals and data signals transmitted and received with a subscriber station by connecting respective user terminals connected to a communication network, and the subscriber interface A communication control unit that controls voice and data transmission and reception of each subscriber station connected to the unit, and controls the overall operation of the digital subscriber matching device and interconverts the communication protocol between each subscriber station connected to the subscriber interface unit and the system. With, system in Stored is connected to the face portion compresses R ₂ -MFC signal processing and control unit, the R ₂ -MFC tone signal data for controlling the overall operation for processing the R ₂ -MFC tone signal transmitted to the subscriber terminal side to a digital signal A R ₂ signal transmitter for transmitting the compressed R ₂ -MFC tone signal to the corresponding subscriber station according to the control signal applied from the R ₂ -MFC signal processing controller, and an R2-MFC of the other station applied from the subscriber station. A multi-function signal processing apparatus for an all-electronic exchange comprising a R ₂ signal receiving unit for receiving and detecting a signal. The system of claim 1, wherein the R ₂ -MFC signal processing controller applies a control signal applied through the address bus AB, the data bus DB, and the control bus CB of the main controller from the system interface unit. DSP interface for interfacing the transmission and reception of R ₂ tone signals by synchronizing with the clock, DSP control unit for controlling the overall operation of the DSP processing, and applying from the main control unit through the address bus, data bus and control bus And a tone / time slot control unit for designating an address address of a ROM in which an R ₂ tone signal for transmission is stored according to a signal to be transmitted. The DSP of claim 1, wherein the R ₂ signal receiving unit is configured to store and store operation program data of a DSP for processing an R ₂ -MFC signal received through a communication network, and a DSP to process a received R ₂ tone signal in a digital form. Multi-function signal processing apparatus of an all-electronic exchange comprising a. The method of claim 1, wherein the R ₂ signal transmitter is characterized in that the R ₂ -MFC signal data up to 1-15 is digitalized and stored for each A-law, μ-law and high level, 200 bytes each Multifunction signal processing device of electronic exchanger. 3. The tone / time slot control unit according to claim 2, wherein the tone / time slot control unit buffers a counter for counting a period of a clock signal applied from a system clock interface unit and buffers a data signal of a main control unit applied through a data bus DB to control the flow of the signal. adjusting the first and second registers and, wherein the multiplexer and to the main control unit to match the synchronization of data signals applied to the system clock supplied from the multiplex counter from the first register, a multiplexer from the multiplexer is transmitted to which R ₂ -MFC And a RAM for temporarily storing a signal at a predetermined address.