JPH02216927A - Test system for subscriber line system - Google Patents

Test system for subscriber line system

Info

Publication number
JPH02216927A
JPH02216927A JP1037448A JP3744889A JPH02216927A JP H02216927 A JPH02216927 A JP H02216927A JP 1037448 A JP1037448 A JP 1037448A JP 3744889 A JP3744889 A JP 3744889A JP H02216927 A JPH02216927 A JP H02216927A
Authority
JP
Japan
Prior art keywords
subscriber line
packet
terminal
data signal
subscriber
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
JP1037448A
Other languages
Japanese (ja)
Inventor
Satoru Kawarada
川原田 覚
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP1037448A priority Critical patent/JPH02216927A/en
Publication of JPH02216927A publication Critical patent/JPH02216927A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To facilitate the performance of a subscriber line system by transmitting a telephone number via a subscriber's terminal adaptor at the test of a subscriber line and folding a packet exchange data signal received from a data terminal via a packet exchange data signal folding equipment after the connection of a call is completed. CONSTITUTION:A subscriber's terminal adaptor 4 is connected to a network terminating equipment 6, and a data terminal 2 is connected to the adaptor 4. Then a packet exchange data signal folding equipment 10 is allocated with a telephone number stored in an exchange and answers automatically a packet exchange data call. When a subscriber line is tested, a packet exchange data call is given to the equipment 10 from the adaptor 4. Then the packet exchange data signal received by the equipment 10 from the terminal 2 is sent back to the terminal 2 after an automatic answer. Thus it is possible to facilitate the test of a subscriber line system including the line 7, the equipment 6, and a digital subscriber circuit 8.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はl5DN交換機の加入者線システム試験方式に
関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a subscriber line system testing method for an I5DN exchange.

〔従来の技術〕[Conventional technology]

従来この種の試験としては、交換機側の試験台から加入
者線を選択し、加入者線間の絶縁抵抗や容量や対地電圧
等のアナログパラメータを測定していた。
Conventionally, in this type of test, subscriber lines were selected from a test stand on the exchange side, and analog parameters such as insulation resistance, capacitance, and voltage to ground between the subscriber lines were measured.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

これらの試験では、加入者線の切断、地絡、電灯線との
混触等の検出が可能であった。しかしなから、上記の試
験方式には次の様な欠点がある。
These tests were able to detect subscriber line disconnections, ground faults, and contact with power lines. However, the above test method has the following drawbacks.

(1)加入者線の選択が交換機側からであり、例えば宅
内装置の工事時に、宅内機器側からの試験の起動が出来
ない。
(1) The selection of the subscriber line is done from the exchange side, and for example, during construction of the home equipment, testing cannot be started from the home equipment side.

(2)試験項目が従来のアナログ型伝送方式に合わせた
ものであり、特にデジタル伝送時に問題となる加入者線
の瞬断、雑音の混入等に対する評価が困難である。
(2) The test items are tailored to conventional analog transmission systems, making it difficult to evaluate problems such as instantaneous interruptions in subscriber lines and noise intrusion, which are particularly problematic during digital transmission.

したがって、特に、I SDN交換機の様に加入者線に
てデジタル伝送することを前提としたシステムにおける
新たな加入者線システム試験方式が求められている。
Therefore, there is a need for a new subscriber line system testing method, especially for systems such as ISDN exchanges, which are premised on digital transmission over subscriber lines.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の加入者線システム試験方式は交換機のデジタル
加入者回路と網終端装置とが被測定加入者線を介して対
向している加入者線システムにおいて、前記網終端装置
に接続されていてパケット呼を発信可能な宅内端末アダ
プタと、この宅内端末アダプタに接続されているデータ
端末と、交換機に収容されていて電話番号を割当てられ
パケット交換データ呼に自動応答するパケット交換デー
タ信号折返し装置とを備え、加入者線試験時には、前記
宅内端末アダプタから前記パケット交換データ信号折り
返し装置に対してパケット交換データ呼を発呼し、自動
応答後に前記データ端末から送出された前記パケット交
換データ信号折り返し装置に到来したパケット交換デー
タ信号を前記データ端末側に送り返すことにより、前記
加入者線と前記網終端装置と前記デジタル加入者回路と
を含む加入者線システムの試験を行う構成である。
The subscriber line system test method of the present invention is a subscriber line system in which a digital subscriber circuit of an exchange and a network terminating device face each other via a subscriber line under test. A home terminal adapter that can make calls, a data terminal connected to the home terminal adapter, and a packet-switched data signal return device that is housed in an exchange, is assigned a telephone number, and automatically answers packet-switched data calls. In preparation, during a subscriber line test, a packet-switched data call is made from the home terminal adapter to the packet-switched data signal loopback device, and after an automatic response, the packet-switched data signal loopback device sent from the data terminal receives a packet-switched data call. The subscriber line system including the subscriber line, the network termination device, and the digital subscriber circuit is tested by sending the incoming packet-switched data signal back to the data terminal side.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

本発明の一実施例を示す第1図を参照すると、交換機側
では、デジタル加入者回路8と、バケ・ント交換データ
信号折り返し装置10が交換ネ・ントワーク9を介して
通話路接続可能である。この接続は中央制御装置11の
指令で制御バス12を通して行なわれる。又、制御バス
12は通話路接続指令のみならず、デジタル加入者回路
8から着信相手先電話番号を中央制御装置11に転送す
る時や、パケット交換データ信号折り返し装置10への
着信要求や応答レスポンスの転送にもつかわれる。加入
者線7は本例での被測定対象の一部である。網終端装置
6は加入者線7を通して交換機と対向していて、レイア
1の終端、又は宅内装置に対する外部サージ信号のガー
ドや宅内バス5の駆動を行なっている。宅内端末アダプ
タ4は宅内バス5に接続し、端末装置と宅内バス5との
インタフェースを行なう0本例では、宅内装置として、
データ端末2が接続されている。
Referring to FIG. 1, which shows an embodiment of the present invention, on the exchange side, a digital subscriber circuit 8 and a bucket exchange data signal loopback device 10 can be connected to each other via an exchange network 9. . This connection is made via a control bus 12 at the command of a central control unit 11. In addition, the control bus 12 not only sends communication path connection commands, but also transfers the telephone number of the called party from the digital subscriber circuit 8 to the central control unit 11, and sends calls and response responses to the packet switching data signal return device 10. It is also used for transferring. The subscriber line 7 is part of the object to be measured in this example. The network termination device 6 faces the exchange through the subscriber line 7, and terminates the layer 1 or protects the home equipment from external surge signals and drives the home bus 5. The home terminal adapter 4 connects to the home bus 5 and provides an interface between the terminal device and the home bus 5. In this example, the home device includes:
A data terminal 2 is connected.

次に、動作についてのべる。試験開始時には、ます宅内
端末アダプタ4からパケット交換データ信号折り返し装
置10の電話番号を送出しパケット呼を発信する。この
電話番号は加入者線7の信号チャネルにのせられ、デジ
タル加入者回路8に入力し、更に制御バス12を通して
中央制御装置11へ入力する。入力した電話番号情報が
パケット交換データ信号折り返し装置10のものである
と判明すると、中央制御装置11は装置10に対し、パ
ケット呼着信要求を送出する。装置10が自動応答信号
を返送すると、デジタル加入者回路8とパケット交換デ
ータ信号折り返し装置10とを接続するため、交換ネッ
トワーク9のバス閉成が指示される。これらの指示/応
答信号はすべて制御バス12を通して実行される0以上
の動作により、データ端末2からのデータ信号はパケッ
ト交換データ信号として加入者線7を通してパケット交
換データ信号折り返し装置10で受信される。受信され
たパケット交換データ信号はそのまま折り返され上記と
は逆の経路にてデータ端末2に受信される。この時、デ
ータ端末2を操作している試験者は、データ端末から送
出したものと同一のキャラクタが受信されれば、加入者
線システム全体のパフォーマンスは良好と判断し、そう
でない場合は、加入者線7又は対向している宅内端末ア
ダプタ4やデジタル加入者回路8に不具合がある事を知
る。
Next, let's talk about the operation. At the start of the test, the telephone number of the packet-switched data signal return device 10 is sent from the home terminal adapter 4 to initiate a packet call. This telephone number is placed on the signal channel of the subscriber line 7 and is input to the digital subscriber circuit 8 and then via the control bus 12 to the central control unit 11. When it is determined that the input telephone number information belongs to the packet-switched data signal return device 10, the central control device 11 sends a packet call termination request to the device 10. When device 10 returns an automatic response signal, bus closure of switching network 9 is instructed to connect digital subscriber circuit 8 and packet-switched data signal return device 10. These instruction/response signals are all carried out through the control bus 12 by zero or more operations such that the data signal from the data terminal 2 is received as a packet-switched data signal by the packet-switched data signal looper 10 over the subscriber line 7. . The received packet-switched data signal is returned as is and received by the data terminal 2 via a route opposite to that described above. At this time, the tester operating data terminal 2 determines that the performance of the subscriber line system as a whole is good if the same character sent from the data terminal is received; The customer learns that there is a problem with the subscriber line 7 or the opposing home terminal adapter 4 or digital subscriber circuit 8.

〔発明の効果〕〔Effect of the invention〕

以上に説明したように、本発明によれば、交換機のデジ
タル加入者回路と網終端装置とが加入者線をはさんで対
向している加入者線システムにおいて、網終端装置に接
続されていてパケット呼発信可能な宅内端末アダプタと
、この宅内端末アダプタに接続されているデータ端末と
、交換ネットワークに接続されているパケット交換デー
タ信号折り返し装置とを有し、加入者線試験時には、宅
内端末アダプタからパケット交換データ信号折り返し装
置の電話番号を送出し、接続完了後、データ端末から送
出されたパケット交換データ信号をパケット交換データ
信号折り返し装置で折り返すことにより、加入者線シス
テムのパフォーマンスを知ることができる。
As explained above, according to the present invention, in a subscriber line system in which the digital subscriber circuit of an exchange and the network termination device face each other across the subscriber line, the digital subscriber circuit of the exchange is connected to the network termination device. It has an in-home terminal adapter capable of making packet calls, a data terminal connected to this in-home terminal adapter, and a packet-switched data signal return device connected to a switching network. It is possible to know the performance of the subscriber line system by sending the telephone number of the packet-switched data signal return device from the data terminal, and after the connection is completed, the packet-switched data signal sent from the data terminal is returned by the packet-switched data signal return device. can.

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

第1図は本発明の一実施例を示す構成図である。 2:データ端末、4:宅内端末アダプタ、5:宅内バス
、6:網終端装置、7:加入者線、8:デジタル加入者
回路、9:交換ネットワーク、10:パケット交換デー
タ信号折り返し装置、11:中央制御装置、12:制御
バス。
FIG. 1 is a block diagram showing an embodiment of the present invention. 2: data terminal, 4: home terminal adapter, 5: home bus, 6: network termination device, 7: subscriber line, 8: digital subscriber circuit, 9: switching network, 10: packet switching data signal return device, 11 : central control unit, 12: control bus.

Claims (1)

【特許請求の範囲】[Claims] 交換機のデジタル加入者回路と網終端装置とが被測定加
入者線を介して対向している加入者線システムにおいて
、前記網終端装置に接続されていてパケット呼を発信可
能な宅内端末アダプタと、この宅内端末アダプタに接続
されているデータ端末と、交換機に収容されていて電話
番号を割当てられパケット交換データ呼に自動応答する
パケット交換データ信号折返し装置とを備え、加入者線
試験時には、前記宅内端末アダプタから前記パケット交
換データ信号折り返し装置に対してパケット交換データ
呼を発呼し、自動応答後に前記データ端末から送出され
た前記パケット交換データ信号折り返し装置に到来した
パケット交換データ信号を前記データ端末側に送り返す
ことにより、前記加入者線と前記網終端装置と前記デジ
タル加入者回路とを含む加入者線システムの試験を行う
ことを特徴とする加入者線システム試験方式。
In a subscriber line system in which a digital subscriber circuit of an exchange and a network termination device face each other via a subscriber line to be measured, an in-home terminal adapter connected to the network termination device and capable of transmitting a packet call; It is equipped with a data terminal connected to this in-home terminal adapter and a packet-switched data signal return device that is housed in an exchange, is assigned a telephone number, and automatically responds to packet-switched data calls. A packet-switched data call is made from the terminal adapter to the packet-switched data signal return device, and after an automatic response, the packet-switched data signal that has arrived at the packet-switched data signal return device sent from the data terminal is transmitted to the data terminal. A subscriber line system testing method characterized in that a subscriber line system including the subscriber line, the network termination device, and the digital subscriber circuit is tested by sending the subscriber line back to the network terminal.
JP1037448A 1989-02-16 1989-02-16 Test system for subscriber line system Pending JPH02216927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1037448A JPH02216927A (en) 1989-02-16 1989-02-16 Test system for subscriber line system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1037448A JPH02216927A (en) 1989-02-16 1989-02-16 Test system for subscriber line system

Publications (1)

Publication Number Publication Date
JPH02216927A true JPH02216927A (en) 1990-08-29

Family

ID=12497783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1037448A Pending JPH02216927A (en) 1989-02-16 1989-02-16 Test system for subscriber line system

Country Status (1)

Country Link
JP (1) JPH02216927A (en)

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