KR920004152B1 - Micron/a-law choosing method and circuit of digital telephone systems - Google Patents

Micron/a-law choosing method and circuit of digital telephone systems Download PDF

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KR920004152B1
KR920004152B1 KR1019890015004A KR890015004A KR920004152B1 KR 920004152 B1 KR920004152 B1 KR 920004152B1 KR 1019890015004 A KR1019890015004 A KR 1019890015004A KR 890015004 A KR890015004 A KR 890015004A KR 920004152 B1 KR920004152 B1 KR 920004152B1
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law
digital telephone
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microprocessor
hooked
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손숭원
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삼성전자 주식회사
정용문
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

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Description

디지탈 전화기에 있어서 μ/A-law 선택방법 및 회로Μ / A-law Selection Method and Circuit in Digital Telephones

제 1 도는 본 발명에 따른 회로도.1 is a circuit diagram according to the present invention.

제 2 도는 본 발명에 따른 흐름도.2 is a flow chart according to the present invention.

본 발명은 디지탈 전화기에 있어서 μ-law선택회로에 관한 것으로, 특히 자동으로 선택할 수 있는 μ-law방식선택방법 및 회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a μ-law selection circuit in a digital telephone, and more particularly, to a method and circuit for automatically selecting a mu-law method.

일반적으로 사설교환기 및 국설교환기에 연결된 디지탈 전화기에 있어서 통신을 위해서는 상기 교환기가 A-law 또는 μ-law방식에 일치해야 통신이 가능해진다. 이를 위해 종래의 디지탈 전화기에서는 μ-law선택을 위해서는 콤보코덱의 1μ-law선택단의 스위칭으로 교환기의 μ-law방식에 따라 가능해지도록 하였다. 예를들어 상기 콤보코덱의 μ-law선택단을 선택시 점프선이나 스위치를 이용하여 선택하였으나 각국의 통신규격에 따라 μ-law 또는 μ-law로 A-law로 구분하여 보드로써 관리함으로 이에따른 관리의 이중성 및 교체시변해, 수정에 의한 재조립보드의 μ-law 또는 A-law의 호환성이 없는 문제점이 있었다.In general, in a digital telephone connected to a private exchange or a local exchange, communication is required only if the exchange conforms to the A-law or μ-law method. To this end, in the conventional digital telephone, it is possible to switch the 1-μ-law selection stage of the combo codec according to the μ-law method of the exchange for μ-law selection. For example, when the μ-law selection step of the combo codec is selected using a jump line or a switch, according to the communication standard of each country, the A-law is divided into μ-law or μ-law and managed as a board. There was a problem of incompatibility between the μ-law or A-law of the reassembled board due to the change in duality and replacement.

따라서 본 발명의 목적은 소프트웨어적으로 자동적으로 A-law 또는 μ-law방식을 선택할 수 있는 회로 및 방법을 제공함에 있다. 이하 본 발명을 첨부된 도면을 참조하여 상세히 설명한다.Accordingly, an object of the present invention is to provide a circuit and method for automatically selecting an A-law or μ-law method in software. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제 1 도는 본 발명에 따른 회로도로서, 사설교환기(10)에 디지탈(20)를 연결하고, 상기 디지탈 전화기(20)는 상기 사설교환기(10)로부터 전송로를 통해 전송부(21)를 연결하고, 상기 전송부(21)로부터 마이크로 프로세서(22)를 연결하며, 상기 마이크로 프로세서(22)에 후크 온/오프감지부(24)를 연결하고, 상기 마이크로프로세서(22)의 출력포트를 콤보코덱(23)의 μ-law선택단에 연결되도록 구성한다.FIG. 1 is a circuit diagram according to the present invention, in which a digital 20 is connected to a private exchange 10, and the digital telephone 20 connects a transmitter 21 through a transmission path from the private exchange 10. The microprocessor 22 is connected to the microprocessor 22, the hook on / off detection unit 24 is connected to the microprocessor 22, and the output port of the microprocessor 22 is a combo codec. It is configured to be connected to the μ-law selection terminal of 23).

제 2 도는 본 발명에 따른 흐름도로서, 후크 오프된 디지탈 전화기가 있는가를 체킹하는 제 1 과정과, 상기 제 1 과정의 후크오프된 전화기가 A-law방식인가를 체킹하는 제 2 과정과, 상기 제 2 과정에서 A-law방식일때 상기 제 1 과정의 후크오프한 디지탈 전화기로 메세지를 송출하고 A-law방식이 아닐때 μ-law방식임을 메세지하는 제 3 과정과, 상기 제 3 과정에서 교환기로부터 μ-law방식을 알리는 메세지가 있는가를 체킹하는 제 4 과정과, 상기 제 4 과정에서 메세지가 있을때 콤보코덱을 A-law방식으로 세팅하기 위한 데이타를 메모리로부터 가져오는 제 5 과정과, 상기 제 5 과정 실행후 제 4 과정에서 보내온 메세지가 A-law방식인가를 체크하는 제 6 과정과, 상기 제 6 과정의 검색결과에 따라 상기 제 5 과정에서 읽어온 데이타에 의해 콤보코덱의 μ/A-law의 선택단의 제어로 해당 방식을 선택하는 제 7 과정으로 이루어진다.2 is a flow chart according to the present invention, a first step of checking whether there is a digital telephone hooked off, a second step of checking whether the hooked-up telephone of the first step is A-law method, and the second step A third step of sending a message to the hooked-up digital telephone of the first step when the A-law method is used, and a message that is a μ-law method when the A-law method is not used, and the μ- from the exchange in the third step. a fourth step of checking whether there is a message informing the law method, a fifth step of obtaining data from a memory for setting the combo codec to the A-law method when there is a message in the fourth step, and executing the fifth step A sixth step of checking whether the message sent in the fourth step is an A-law method, and the selection of μ / A-law of the combo codec by the data read in the fifth step according to the search result of the sixth step A seventh process of selecting a corresponding method is performed by controlling the stage.

따라서 본 발명의 구체적인 일실시예를 제 1, 2 도를 참조하여 상세히 설명하면, 디지탈 전화기(20)의 후크 스위치 감지부(24)에서 후크오프하면 마이크로 프로세서(22)에서 이를 감지하여 전송부(21)를 통해 사설교환기(10)로 송출한다. (2a)과정에서 사설교환기(10) 내부에서는 후크오프된 디지탈 전화기(20)가 있는가를 체킹하게 된다.Therefore, a specific embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2, when the hook switch detection unit 24 of the digital telephone 20 is hooked off, the microprocessor 22 detects this and transmits the transmission unit. 21) to the private exchange 10. In the process of (2a), the private exchange 10 checks whether the digital telephone 20 is hooked off.

상기(2a) 과정에서 후크오프된 전화기가 있을때 (2b) 과정에서 상기 (2a)과정에서 후크 오프된 디지탈 전화기 A-law방식인가를 체크한다. 상기(2b)과정에서 A-law방식일때 상기 후크오프된 디지탈 전화기(20)로 (2c)과정에서 A-law방식이 아닐때 (2d)과정에서 후크-오프된 디지탈 전화기(20)로 μ-law방식임을 알리는 메세지를 송출한다.When there is a telephone hooked off in step (2a), it is checked in step (2b) whether the digital telephone A-law method is hooked off in step (2a). When the A-law method is in the process (2b) to the hook-off digital telephone 20 in step (2c) When it is not the A-law method in the process (2c) to the digital phone 20 hook-off in the process (2d) Sends a message indicating the law method.

상기 (2c, 2d) 해당방식에 따른 메세지를 받은 디지탈 전화기(20)의 마이크로 프로세서(22)는 (2e)과정에서 μ-law를 알리는 메세지인가를 체크한다. 상기 (2e)과정에서 μ-law를 알리는 메세지가 있을때 (2f)과정에서 마이크로 프로세서(22)의 메모리 영역으로부터 μ-law 세팅을 위한 입출력 포트데이타(어드레스)를 가져와서(2g) 과정에서 A-law방식인가를 체크한다.The microprocessor 22 of the digital telephone 20 which has received the message according to the method (2c, 2d) checks whether or not the message indicates the µ-law in step (2e). When there is a message indicating μ-law in step (2e), input / output port data (address) for μ-law setting is obtained from the memory area of the microprocessor 22 in step (2f), and A- in step (2g). Check whether the law method is used.

상기 (2g)과정에서 A-law방식일때 마이크로 프로세서(22)의 입출력 포트를 통해(2h)과정에서 콤보코덱(23)의 μ-law선택단(μ/A)을 제어하기 위한 제어 데이타를 송출하고, 상기 (2g)과정에서 μ-law방식일때 마이크로 프로세서(22)의 입출력 포트를 통해 (2i)과정에서 콤보코덱(23)의 μ-law선택단(μ/A)을 제어하기 위한 제어데이타를 송출하여 방식에 따른 선택 제어한다.The control data for controlling the μ-law selection stage (μ / A) of the combo codec 23 is transmitted through the input / output port of the microprocessor 22 (2h) when the A-law method is used in the process (2g). And control data for controlling the μ-law selection stage (μ / A) of the combo codec 23 in the process (2i) through the input / output port of the microprocessor 22 in the process of μ-law in the process (2g). Send control to select according to the method.

상술한 바와 같이 소프트웨어적으로 PCM칩을 이용한 모든 가입자의 카드와 국선 써비스카드 및 사설교환기에 설치할 수 있는 디지탈 전화기에 적용하므로서 각극의 μ-law방법에 관계없이 설치가능한 이점이 있다.As described above, the software can be applied to digital subscriber phones that can be installed in all subscriber cards using a PCM chip, a trunk line service card, and a private exchange, and thus can be installed regardless of the μ-law method of each pole.

Claims (2)

교환기에 접속된 디지탈 전화기 μ/A-law선택회로에 있어서, 사설교환기(10)에 디지탈 전화기(20)를 연결하고, 상기 디지탈 전화기(20)는 상기 사설교환기(10)로부터 전송로를 통해 전송부(21)를 연결하고, 상기 전송부(21)로부터 마이크로 프로세서(22)를 연결하며, 상기 마이크로 프로세서(22)에 후크 온/온프감지부(24)를 연결하고, 상기 마이크로 프로세서(22)의 출력포트를 콤보코엑(23)의 μ-law선택단에 연결되도록 구성됨을 특징으로 하는 디지탈 전화기에 있어서 μ-law선택회로.In the digital telephone μ / A-law selection circuit connected to the exchanger, a digital telephone 20 is connected to the private exchange 10, and the digital telephone 20 is transmitted from the private exchange 10 via a transmission line. The unit 21, a microprocessor 22 from the transmitter 21, a hook on / on detector 24 to the microprocessor 22, and the microprocessor 22. Μ-law selection circuit for a digital telephone, characterized in that the output port is configured to be connected to the μ-law selection stage of the combo COEX (23). 교환기에 접속된 디지탈 전화기의 μ/A-law선택방법에 있어서, 후크 오프된 디지탈 전화기가 있는가를 체킹하는 제 1 과정과, 상기 제 1 과정의 후크오프된 전화기가 A-law방식인가를 체킹하는 제 2 과정과, 상기 제 2 과정에서 A-law방식일때 상기 제 1 과정의 후크오프한 디지탈 전화기로 메세지를 송출하고 A-law방식이 아닐때 μ-law방식임을 메세지하는 제 3 과정과, 상기 제 3 과정에서 교환기로부터 μ/A-law방식을 알리는 메세지가 있는가를 체킹하는 제 4 과정과, 상기 제 4 과정에서 메세지가 있을때 콤보코덱을 A/μ-law방식으로 세팅하기 위한 데이타를 메모리로부터 가져오는 제 5 과정과, 상기 제 5 과정 실행후 제 4 과정에서 들리온 메세지가 A/μ-law방식인가를 체크하는 제 6 과정과, 상기 제 6 과정의 검색결과에 따라 상기 제 5 과정에서 읽어온 데이타에 의해 콤보코덱의 μ/A-law의 선택단의 제어로 해당방식을 선택하는 제 7 과정으로 이루어짐을 특징으로 하는 디지탈 전화기에 있어서 μ/A-law선택방법.A method for selecting a μ / A-law of a digital telephone connected to an exchange, comprising: a first step of checking whether there is a digital telephone hooked off and a check of whether the hooked-up telephone of the first procedure is an A-law method; A second step of sending a message to the hooked-up digital telephone of the first step when the A-law method is used in the second step, and a message of a μ-law method when the A-law method is not the A-law method; In step 3, a fourth step of checking whether there is a message informing the μ / A-law method from the exchange, and when the message is in the fourth step, data for setting the combo codec to the A / μ-law method from the memory is retrieved. The fifth step, the sixth step of checking whether the message heard in the fourth step after the fifth step is executed in the A / μ-law method, and the fifth step according to the search result of the sixth step By data [7] A method for selecting [mu] / A-law in a digital telephone comprising a seventh step of selecting a corresponding method by controlling the selection step of [mu] / A-law of a combo codec.
KR1019890015004A 1989-10-18 1989-10-18 Micron/a-law choosing method and circuit of digital telephone systems Expired KR920004152B1 (en)

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