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KR100293387B1 - Voice connection device of exchange - Google Patents

Voice connection device of exchange Download PDF

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Publication number
KR100293387B1
KR100293387B1 KR1019970071189A KR19970071189A KR100293387B1 KR 100293387 B1 KR100293387 B1 KR 100293387B1 KR 1019970071189 A KR1019970071189 A KR 1019970071189A KR 19970071189 A KR19970071189 A KR 19970071189A KR 100293387 B1 KR100293387 B1 KR 100293387B1
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voice
signal
telephone
decoder
volume
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KR19990051795A (en
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김궁
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박종섭
현대전자산업주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/02—Delta modulation, i.e. one-bit differential modulation
    • H03M3/022—Delta modulation, i.e. one-bit differential modulation with adaptable step size, e.g. adaptive delta modulation [ADM]
    • H03M3/024—Delta modulation, i.e. one-bit differential modulation with adaptable step size, e.g. adaptive delta modulation [ADM] using syllabic companding, e.g. continuously variable slope delta modulation [CVSD]

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE: A voice access apparatus in an exchange is provided to transmit the voice of a telephone to an ATM exchange using a CVSD(Continuously Variable Slope Deltamodulation) encoder/decoder and to transfer a voice signal, transmitted through the ATM exchange, to the telephone after amplifying it. CONSTITUTION: A voice access system is composed of a telephone(9) and an ATM exchange(8). A line interface part(7) is inserted between the telephone(9) and the ATM exchange(8). The telephone(9) is comprised of a mike transformer(1), a transmitting amplifier(2), a CVSD encoder/decoder(3), a volume controller(4), a receiving amplifier(5), and an MPU(6). The mike transformer(1) amplifies a slight voice signal transferred through a microphone. The transmitting amplifier(2) amplifies and transmits the signal of the mike transformer(1). The CVSD encoder/decoder(3) encodes the analog voice signal inputted through the transmitting amplifier(2) into a digital signal and transmits it to the ATM exchange(8) when a voice call is selected. Also the CVSD encoder/decoder(3) converts a terminal voice signal received through the line interface part(7) into an analog signal. The volume controller(4) adjusts the volume of a signal inputted from the CVSD encoder/decoder(3). The receiving amplifier(5) amplifies the output of the volume controller(4). The MPU(6) executes data write necessary for the volume controller(4), and transfers volume adjustment data through a data bus during a voice call.

Description

교환기의 음성접속장치Voice connection device of exchange

본 발명은 교환기의 음성접속장치에 관한 것으로, 특히 ATM교환기를 거쳐 송수신되는 필요한 음성신호를 변복조 과정을 거쳐 전화기로 전달할 수 있도록 한 것이다.The present invention relates to a voice access device of a switchboard, and more particularly, to transfer a necessary voice signal transmitted and received through an ATM switch to a telephone through a demodulation process.

종래에는 ATM교환기로부터 신호가 전송되면 전화기의 필터에서 필터링한 후 디지털신호를 아날로그신호로 변환시켜 수화기로 전달하였으며 이와반대로 전화기의 송신신호는 디지털신호로 변환된 후 ATM교환기로 전송되었다.Conventionally, when a signal is transmitted from an ATM switch, it is filtered by a filter of the telephone and then converted into an analog signal and transmitted to the receiver. On the contrary, the transmission signal of the telephone is converted into a digital signal and then transmitted to the ATM switch.

본 발명은 이와같은 종래 전화기와 ATM교환기와의 상호 신호전달시스템에 관한 것으로, 본 발명의 목적은 전화기의 음성을 CVSD(Continuously Variable Slope Deltamodulation)부호기/복호기를 사용하여 ATM교환기로 전송하고, 이와반대로 ATM교환기를 통하여 전송되는 음성신호를 소정레벨로 증폭하여 전화기로 전달할 수 있는 교환기의 음성접속장치를 제공하는데 있다.The present invention relates to such a mutual signal transmission system between a conventional telephone and an ATM switch, and an object of the present invention is to transmit a voice of a telephone to an ATM switch using a CVSD (Continuously Variable Slope Delta Modulation) encoder / decoder and vice versa. The present invention provides a voice connection device of an exchange that can amplify a voice signal transmitted through an ATM switch to a predetermined level and transmit the same to a telephone.

이와같은 목적을 달성하기 위한 본 발명은 전화기의 송화기로부터 전달되는 아날로그 음성신호를 여과 및 증폭하여 CVSD변조 방식으로 변조하여 선로정합부를 거쳐 ATM교환기에 송신하는 수단과, ATM교환기로부터 선로 정합부를 통하여 수신되는 음성신호를 CVSD복조과정을 거쳐 수화기로 전달하는 수단을 포함하여 구성함을 특징으로 한다.In order to achieve the above object, the present invention provides a means for filtering and amplifying analog voice signals transmitted from a telephone transmitter of a telephone, modulating them in a CVSD modulation, and transmitting them through a line matching unit to an ATM switch, and receiving them from the ATM switch through a line matching unit. Characterized in that it comprises a means for transmitting the voice signal to the receiver through the CVSD demodulation process.

도 1은 본 발명 교환기의 음성접속장치의 구성도1 is a block diagram of a voice connection device of the exchange of the present invention

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1:마이크 트랜스포머 2:송신증폭부1: Microphone transformer 2: Transmission amplifier

3:CVSD부호기/복호기 4:볼륨제어기3: CVSD encoder / decoder 4: Volume controller

5:수신증폭부 6:MPU5: receiving amplifier 6: MPU

7:선로정합부 8: ATM교환기7: Line matching unit 8: ATM switch

9:전화기9: telephone

이하, 본 발명의 실시예를 첨부된 도면을 참고로 하여 상세히 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 구성도로, 크게 전화기(9)와 ATM교환기(8)로 구성되며 상기 전화기(9)와 ATM교환기(8)사이에 선로정합부(7)가 개재되어 구성된다.FIG. 1 is a block diagram of the present invention, and includes a telephone 9 and an ATM switch 8, and a line matching unit 7 is interposed between the telephone 9 and the ATM switch 8.

그리고 상기 전화기(9)가,마이크로폰을 통하여 전달된 미약한 음성신호를 소정레벨로 증폭하는 마이크 트랜스포머(1)와,상기 마이크 트랜스포머(1)의 신호를 소정레벨로 증폭하여 송신하는 송신 증폭부(2)와,상기 송신증폭부(2)를 통하여 입력되는 아날로그 음성신호를 디지털로 부호화하고 음성통화가 선택될 때 선로를 통하여 교환기로 전송하며,상기 선로정합부(7)를 통하여 수신된 단말 음성신호를 아날로그 신호로 변환시켜 전송하는 CVSD부호기/복호기(3)와,상기 CVSD부호기/복호기(3)로부터 입력되는 신호의 음량을 조절하는 볼륨제어기(4)와, 상기 볼륨제어기(4)의 출력을 사용자가 들을 수 있도록 소정레벨로 증폭하는 수신증폭부(5)와,상기 볼륨제어기(4)에 필요한 데이터쓰기를 수행하며,음성통화중 데이터 버스를 통해 음량조절에 대한 데이터를 전달하는 MPU(6)를 포함하여 구성된다.In addition, the telephone unit 9 includes a microphone transformer 1 for amplifying a weak voice signal transmitted through a microphone to a predetermined level, and a transmission amplifier unit for amplifying and transmitting the signal of the microphone transformer 1 to a predetermined level ( 2), and digitally encodes the analog voice signal input through the transmission amplifier 2 and transmits it to the exchange via a line when the voice call is selected, and the terminal voice received through the line matching unit 7 CVSD encoder / decoder 3 for converting and converting a signal into an analog signal, a volume controller 4 for adjusting the volume of a signal input from the CVSD encoder / decoder 3, and an output of the volume controller 4 Receiving amplification unit 5 for amplifying the sound to a predetermined level so that the user can hear it, and performing data writing to the volume controller 4, and transmitting data on volume control through a data bus during a voice call. It comprises a MPU 6 to reach.

이와같이 구성된 본 발명은 먼저 전화기(9)의 송화기로부터의 음성신호는 마이크 트랜스포머(1)를 통하여 소정레벨로 증폭되고,송신 증폭부(2)를 통해 다시 송신하기에 적당한 레벨로 증폭되어 CVSD부호기/복호기(3)로 전달된다.According to the present invention configured as described above, first, the voice signal from the transmitter of the telephone 9 is amplified to a predetermined level through the microphone transformer 1, and amplified to a level suitable for transmission again through the transmission amplifier 2 so that the CVSD encoder / It is passed to the decoder 3.

따라서, CVSD부호기/복호기(3)에서는 만일 음성신호가 선택되어지면 입력된아날로그 신호를 디지털로 부호화하여 선로 정합부(7)를 통하여 ATM교환기(8)로 전송한다.Therefore, in the CVSD encoder / decoder 3, if the audio signal is selected, the input analog signal is digitally encoded and transmitted to the ATM switch 8 through the line matching unit 7.

즉, 사용자가 전화기(9)의 송화기를 통하여 음성을 전달하면 소정레벨로 증폭된 후 이러한 아날로그 음성신호가 디지털신호로 부호화되어 ATM교환기(8)로 전송되는 것이다.That is, when the user transmits the voice through the talker of the telephone 9, it is amplified to a predetermined level and then the analog voice signal is encoded into a digital signal and transmitted to the ATM switch 8.

한편, ATM교환기(8)로부터 음성신호가 수신될 때에는 선로정합부(7)를 통하여 CVSD부호기/복호기(3)로 전달되며 이 CVSD부호기/복호기(3)에서 디지털신호가 아날로그신호로 변환된 후 볼륨제어기(4)에 의해 수신음량이 조절되는데 이때 볼륨제어에 필요한 데이터 쓰기는 MPU(6)에서 수행하며 음성통화중 데이터버스를 통해 음량조절에 대한 데이터를 전달한다.On the other hand, when a voice signal is received from the ATM switch 8, it is transmitted to the CVSD encoder / decoder 3 through the line matching unit 7, and after the digital signal is converted into an analog signal in the CVSD encoder / decoder 3, The received volume is controlled by the volume controller 4, in which data writing necessary for volume control is performed by the MPU 6, and transmits data on volume control through a data bus during a voice call.

또한, 상기 볼륨제어기(4)에 의해 제어된 수신신호는 수신 증폭부(5)를 통하여 소정레벨로 증폭되어 사용자가 수화기로 들을 수 있게 된다.In addition, the reception signal controlled by the volume controller 4 is amplified to a predetermined level through the reception amplifier 5 so that the user can listen to the receiver.

그리고 상기 수신 증폭부(5)는 송신증폭부(2)로부터 입력되는 측음 및 각종 톤신호가 송화기로 전달될 수 있도록 각 신호를 합하여 주는 기능을 수행하게 된다.In addition, the reception amplifier 5 performs a function of adding up each signal so that the side tone and various tone signals input from the transmission amplifier 2 can be transmitted to the transmitter.

즉,ATM교환기(8)를 통하여 입력되는 음성신호는 사용자가 들을 수 있도록 아날로그신호로 변환된 후 소정레벨로 증폭되어 수화기로 전달되는 것이다.That is, the voice signal input through the ATM switch 8 is converted into an analog signal so that the user can hear it, and then amplified to a predetermined level and transmitted to the receiver.

여기서, 송신클락과 수신클락이 CVSD부호기/복호기(3)에 입력되어 CVSD부호기/복호기(3)의 동작이 가능하게 된다.Here, the transmission clock and the reception clock are input to the CVSD encoder / decoder 3 to enable the operation of the CVSD encoder / decoder 3.

이상에서 설명한 바와같은 본 발명은 전화기의 음성을 CVSD부호기/복호기를 사용하여 ATM교환기로 전송할 수 있음은 물론 ATM교환기를 통하여 전송되는 음성신호를 소정레벨로 증폭하여 전화기로 전달할 수 있는 효과가 있다.As described above, the present invention can transmit the voice of the telephone to the ATM exchanger using the CVSD encoder / decoder, as well as amplify the voice signal transmitted through the ATM exchanger to a predetermined level and transmit the voice signal to the telephone.

Claims (2)

ATM교환기가 선로 정합부를 통하여 전화기와 연결된 시스템에 있어서,In a system where an ATM switch is connected to a telephone through a line matching unit, 상기 전화기가,송화기의 마이크로폰을 통하여 전달된 미약한 음성신호를 소정레벨로 증폭하는 마이크 트랜스포머와,The telephone, microphone transformer for amplifying a weak voice signal transmitted through the microphone of the transmitter to a predetermined level, 상기 마이크 트랜스포머의 신호를 소정레벨로 증폭하여 송신하는 송신 증폭부와,A transmission amplifier which amplifies and transmits the signal of the microphone transformer to a predetermined level; 상기 송신증폭부를 통하여 입력되는 아날로그 음성신호를 디지털로 부호화하고 음성통화가 선택될 때 선로를 통하여 교환기로 전송하며,상기 선로정합부를 통하여 수신된 단말 음성신호를 아날로그 신호로 변환시켜 전송하는 CVSD부호기/복호기와,CVSD encoder for digitally encoding the analog voice signal input through the transmission amplifier and transmitting it to the exchange via a line when a voice call is selected, converting the terminal voice signal received through the line matching unit into an analog signal / With a decoder, 상기 CVSD부호기/복호기로부터 입력되는 신호의 음량을 조절하는 볼륨제어기와,A volume controller for adjusting a volume of a signal input from the CVSD encoder / decoder; 상기 볼륨제어기의 출력을 사용자가 들을 수 있도록 소정레벨로 증폭하는 수신증폭부와,A reception amplifier for amplifying the output of the volume controller to a predetermined level so that a user can hear the signal; 상기 볼륨제어기에 필요한 데이터쓰기를 수행하며,음성통화중 데이터 버스를 통해 음량조절에 대한 데이터를 전달하는 MPU로 된 전화기를 포함하여 구성된 것을 특징으로 하는 교환기의 음성접속장치.And an MPU telephone configured to perform data writing necessary for the volume controller and to transmit data on volume control through a data bus during a voice call. 제 1항에 있어서,상기 수신증폭부가,The method of claim 1, wherein the reception amplifier unit, 송신증폭부로부터 입력되는 측음 및 각종 톤신호가 수화기로 전달될 수 있도록 각 신호를 합하여 주는 것을 특징으로 하는 교환기의 음성접속장치.A voice connection device for a switch, characterized in that the sum of the signals so that the side tone and various tone signals input from the transmission amplifier can be delivered to the receiver.
KR1019970071189A 1997-12-20 1997-12-20 Voice connection device of exchange Expired - Fee Related KR100293387B1 (en)

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