JPS60100858A - Digital exchange system of asynchronous data - Google Patents

Digital exchange system of asynchronous data

Info

Publication number
JPS60100858A
JPS60100858A JP20836583A JP20836583A JPS60100858A JP S60100858 A JPS60100858 A JP S60100858A JP 20836583 A JP20836583 A JP 20836583A JP 20836583 A JP20836583 A JP 20836583A JP S60100858 A JPS60100858 A JP S60100858A
Authority
JP
Japan
Prior art keywords
data
circuit
digital
transmission
communication device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20836583A
Other languages
Japanese (ja)
Inventor
Yukio Ozawa
小沢　潔夫
Yoshiaki Suya
須谷　良昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP20836583A priority Critical patent/JPS60100858A/en
Publication of JPS60100858A publication Critical patent/JPS60100858A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/50—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication
    • H04L12/52—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques

Landscapes

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

Abstract

PURPOSE:To eliminate the use of a synchronizing circuit and to simplify the constitution of a subscriber line transmission circuit by storing the data given from a terminal to a digital exchange in a start-stop data style. CONSTITUTION:An asynchronous data digital exchange system comprises a transmission side data communication device 1, a reception side data communication device 3, digital subscriber circuits 2 and 4 constituting a digital exchange, and a network 5. An asynchronous data receiving circuit 11 of the device 1 receives the start-stop data from a terminal A. The digital data consisting of a start bit ST, data bits D0-D7, control signals S0 and S1 and a stop bit SP is supplied to a subscriber circuit 2 of the exchange from an asynchronous data assembling circuit 12 via a subscriber line l1. Then the digital data is supplied to the device 3 via the network 5 and the circuit 4 and through a subscriber line l2. An asynchronous data decomposing circuit 32 of the device 3 eliminates the signals S0 and S1. Thus a synchronizing circuit can be omitted.

Description

【発明の詳細な説明】 発明の技術分野 本発明は非同期データディジタル交換方式に関する。[Detailed description of the invention] Technical field of invention The present invention relates to asynchronous data digital switching schemes.

従来技術と問題点 従来、データ通信装置とディジタル交換機間の加入者伝
送においては、同期をとってデータの送受信を行ってい
た。しかし、データの同期をとるためにはビット同期の
みならずフレーム同期が必要であシ、そのために同期用
の回路が多くなシがつ複雑になるという問題点があった
。Prior Art and Problems Conventionally, in subscriber transmission between a data communication device and a digital exchange, data was sent and received in synchronization. However, in order to synchronize data, not only bit synchronization but also frame synchronization is required, which has the problem of requiring a large number of synchronization circuits and making them complex.

発明の目的 本発明の目的は、端末からのデータに制御信号を加えて
調歩データ形式によシディジタル交換機に収容できるよ
うにして、同期用回路を不要にして加入者線伝送回路を
簡単圧することにある。OBJECTS OF THE INVENTION An object of the present invention is to add a control signal to data from a terminal so that it can be stored in a digital exchange in start-stop data format, thereby eliminating the need for a synchronization circuit and simplifying subscriber line transmission circuits. It is in.

発明の構成 本発明によれば、端末からの調歩データに制御信号を付
加して伝送用データを生成し、該伝送用データを非同期
伝送方式によシ加入者線伝送を行ない交換機においては
該伝送用データを多点サンプリングによシディジタル交
換機を通過させ、上記、非同期伝送方式によシ加入者線
を介して受信側データ通信装置に送出する受信側データ
通信装置においては伝送用データから上記制御信号を除
去して元の調歩データを他の端末に冷信し、データ通信
装置−文１負機間の加入者線伝送の際に同期をとらない
ようにしたことを特徴とする非同期データディジタル交
喚方式が堤供される。Structure of the Invention According to the present invention, a control signal is added to start-stop data from a terminal to generate transmission data, and the transmission data is transmitted to a subscriber line using an asynchronous transmission method. In the receiving side data communication device, the above control data is transmitted from the transmission data through the digital exchange through multi-point sampling and sent to the receiving side data communication device via the subscriber line using the above-mentioned asynchronous transmission method. An asynchronous data digital device characterized in that the signal is removed and the original start-stop data is sent coldly to another terminal, so that synchronization is not achieved during subscriber line transmission between the data communication device and the Sen-1 negative device. A communication system will be provided.

発明の実施例− 以下、本発明を実施例によシ添付図面を参照して説明す
る。Embodiments of the Invention The present invention will be described below by way of embodiments with reference to the accompanying drawings.

第１図ｔよ本発明方式を実施するだめの装置構成図であ
り、第２図と第３図はそれぞれは端末からの調歩データ
と加入者線の伝送データのフォシマットを示す構成図で
ある。FIG. 1 is a block diagram of an apparatus for implementing the method of the present invention, and FIGS. 2 and 3 are block diagrams showing formats of start-stop data from a terminal and transmission data of a subscriber line, respectively.

第１図の装置は送信側データ通信装置１、ディジタル加
入者回路２，４、受信側データ通信装置３、及びネット
ワーク５から成り、端末Ａから受イ旧−だデータを端末
Ｂに送信するようになっている。尚、加入者回路２．４
とネットワーク５とによりディジタル交換機を構成する
。The apparatus shown in FIG. 1 consists of a transmitting data communication device 1, digital subscriber circuits 2 and 4, a receiving data communication device 3, and a network 5, and is configured to transmit old data received from terminal A to terminal B. It has become. Furthermore, subscriber circuit 2.4
and network 5 constitute a digital exchange.

受信用データサービスユニット１は非同期データ受信回
路１１と非同期データ組立回路１２から構成されている
。非同期データ受信回路１１は第２図に示す端末Ａから
の調歩データを受信する。The receiving data service unit 1 is composed of an asynchronous data receiving circuit 11 and an asynchronous data assembling circuit 12. Asynchronous data receiving circuit 11 receives start-stop data from terminal A shown in FIG.

第２図の調歩データは先ずスタートピッ）ＳＴ、次にデ
ータＤｏＤ！・・・Ｄ７が８ビツト、最後にストップピ
ッ）ＳＰとから構成されている。The start-stop data in Figure 2 is first START (ST) and then DOD! ...D7 is 8 bits, and the last bit is a stop pitch (SP).

この調歩データは非同期データ受信回路１１で受信され
た後に非同期データ組立回路１２へ転送される。組立回
路１２では、第３図に示す伝送データが生成される。This start-stop data is received by the asynchronous data receiving circuit 11 and then transferred to the asynchronous data assembling circuit 12. In the assembly circuit 12, transmission data shown in FIG. 3 is generated.

第３図に示すデータはスタートピットＳＴ、ストップビ
ットＳＰ、データビットＤ、Ｄ、・・・Ｄ・７の他に制
御信号Ｓｏ　ｓ、を含む１０ビツトで形成されている。The data shown in FIG. 3 is formed of 10 bits including a start pit ST, stop bit SP, data bits D, D, . . . , D.7, and a control signal Sos.

この１０ビツトの伝送データは加入者線ｔｌ中を伝送し
て受信用ディジタル加入者回路２に入力する。This 10-bit transmission data is transmitted through the subscriber line tl and input to the receiving digital subscriber circuit 2.

伝送データはサンプリング回路２１によ、！ｌ）　６４
にクロックでデータ速度と無関係に多点サンプリングさ
れてネットワーク５を通過する。通過後は、送信用ディ
ジタル加入者回路４のデサンプリング回路４１によシ復
元され加入者線ｔ２に送出される。このように第３図の
調歩データは多点サンプリングによりネットワーク５を
通過後、送信用データザービスユニ、ト３に入力する。The transmitted data is sent to the sampling circuit 21! l) 64
The data is sampled at multiple points using a clock regardless of the data rate and passes through the network 5. After passing through, the signal is restored by the desampling circuit 41 of the transmitting digital subscriber circuit 4 and sent to the subscriber line t2. In this manner, the start/stop data shown in FIG. 3 passes through the network 5 through multi-point sampling and is then input to the transmission data service unit 3.

送信用１データツービスユニット３の非同期データ分解
回路３２で、制御イド号５Ｏ８１が分離されて８ビツト
データに直されて非同期データ送信回路３１を経て端末
Ｂに送信される。端末Ｂの呼出しと切断はレベル監視回
路３３により行われる。The asynchronous data decomposition circuit 32 of the transmission 1-data-to-bis unit 3 separates the control ID code 5O81, converts it into 8-bit data, and transmits it to the terminal B via the asynchronous data transmission circuit 31. Calling and disconnection of terminal B are performed by the level monitoring circuit 33.

発明の効果 上記のとおり、本発明によれば同期をとらない調歩デー
タ形式で端末からのデータをディジタル交換機に収容で
きるので、同期回路が不要となシ伝送回路が簡単になる
。なお、図３の加入者線伝送における非同期テゝ−タフ
オーマットバー例テあり、制呻信号ビット数、ｓｐビッ
ト数は任意である。Effects of the Invention As described above, according to the present invention, data from a terminal can be accommodated in a digital exchange in the start-stop data format without synchronization, so a synchronization circuit is not required and the transmission circuit can be simplified. In the subscriber line transmission shown in FIG. 3, there is an example of an asynchronous data format bar, and the number of suppressing signal bits and the number of SP bits are arbitrary.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明に係る方式を実施するだめの装置構成図
、第２図は第１図の端末との調歩データフォーマット、
第３図は加入者線ｔ！ｔ２の伝送データフォーマットを
示す図である。 ■・・・送信側データ通信装置、２，４・・・ディジタ
ル加入者回路、３・・・受信側データ通信装置、５・・
・ネットワーク、１１・・・非同期データ受信回路、１
２・・・非同期データ組立回路、２１・・・サンプリン
グ回路、２２・・・レベル監視回路、３１・・・非同期
データ送信回路、３２・・・非同期データ分解回路、３
３・・・レベル監視回路、４１・・・デサンプリング回
路。 特許出願人 富士通株式会社 特許出願代理人 弁理士　青　木　朗 弁理士　西　舘　和　之 弁理士　内　１）幸　男 弁理士　山　口　昭　之FIG. 1 is a configuration diagram of an apparatus for implementing the method according to the present invention, and FIG. 2 is a start-stop data format with the terminal shown in FIG.
Figure 3 shows subscriber line t! It is a figure which shows the transmission data format of t2. ■...Sending side data communication device, 2, 4...Digital subscriber circuit, 3...Receiving side data communication device, 5...
・Network, 11...Asynchronous data receiving circuit, 1
2...Asynchronous data assembly circuit, 21...Sampling circuit, 22...Level monitoring circuit, 31...Asynchronous data transmission circuit, 32...Asynchronous data decomposition circuit, 3
3... Level monitoring circuit, 41... Desampling circuit. Patent applicant Fujitsu Ltd. Patent agent Akira Aoki Patent attorney Kazuyuki Nishidate 1) Yukio Patent attorney Akira Yamaguchi

Claims (1)

【特許請求の範囲】[Claims] データ通信装置において端末からの調歩データに制御４
１号を付加して伝送用データを生成し、該伝送用データ
を非同期伝送方式によシ加入者線伝送を行ない交換機に
おいては多点サンプリングによりディジタル交換機を通
過させ、上記非同期伝送方式によシ加入者線を介して受
信側データ通信装置に送出し、該通信装置では、伝送用
データから上記制御信号を除去して元の調歩データを他
の端末に送信し、データ通信装置−交換機間のディジタ
ル加入者線伝送の際に同期をとらないようにしたことを
特徴とする非同期データディジタル交換方式。Control 4 based on start-stop data from a terminal in a data communication device
No. 1 is added to generate data for transmission, and the data for transmission is transmitted through a subscriber line using an asynchronous transmission method. At the exchange, it is passed through a digital exchange by multi-point sampling, and the data is transmitted using the above asynchronous transmission method. The data is sent to the receiving side data communication device via the subscriber line, and the communication device removes the control signal from the transmission data and transmits the original start-stop data to another terminal, and the communication device transfers data between the data communication device and the exchange. An asynchronous data digital exchange system characterized by not synchronizing during digital subscriber line transmission.
JP20836583A 1983-11-08 1983-11-08 Digital exchange system of asynchronous data Pending JPS60100858A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20836583A JPS60100858A (en) 1983-11-08 1983-11-08 Digital exchange system of asynchronous data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20836583A JPS60100858A (en) 1983-11-08 1983-11-08 Digital exchange system of asynchronous data

Publications (1)

Publication Number Publication Date
JPS60100858A true JPS60100858A (en) 1985-06-04

Family

ID=16555082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20836583A Pending JPS60100858A (en) 1983-11-08 1983-11-08 Digital exchange system of asynchronous data

Country Status (1)

Country Link
JP (1) JPS60100858A (en)

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