JPH0371830B2 - - Google Patents
Info
- Publication number
- JPH0371830B2 JPH0371830B2 JP27648185A JP27648185A JPH0371830B2 JP H0371830 B2 JPH0371830 B2 JP H0371830B2 JP 27648185 A JP27648185 A JP 27648185A JP 27648185 A JP27648185 A JP 27648185A JP H0371830 B2 JPH0371830 B2 JP H0371830B2
- Authority
- JP
- Japan
- Prior art keywords
- line
- test
- transmission
- selection signal
- circuit
- 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.)
- Expired
Links
- 238000012360 testing method Methods 0.000 claims description 49
- 230000005540 biological transmission Effects 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 21
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 238000010998 test method Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 description 8
- 230000004308 accommodation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Description
【発明の詳細な説明】
〔概要〕
交換機と伝送装置からなる通信システムで、回
線折返し試験用の特定の選択信号を使用し、両方
向トランクとネツトワークフレームを含めた折返
し回路を、中央制御装置により形成して、伝送装
置の発信側から回線折返し試験を可能にするもの
である。[Detailed Description of the Invention] [Summary] A communication system consisting of a switch and a transmission device, in which a central controller controls a loop back circuit including bidirectional trunks and network frames using specific selection signals for line loop testing. This enables line loopback testing from the originating side of the transmission equipment.
本発明は電話通信やデータ通信に用いられる通
信システムの、回線折返し試験方法の改良に関す
る。
The present invention relates to improvements in line loopback testing methods for communication systems used for telephone communications and data communications.
通信システムは大規模化、高度化の傾向にあ
り、またこれまでの音声通信のみならずデータ通
信との複合化が進み、オフイスオートメイシヨン
の推進力となり、企業内ネツトワークとしての導
入が盛んになつている。 Communication systems are becoming larger and more sophisticated, and they are becoming more complex with not only voice communication but also data communication, becoming a driving force for office automation, and are increasingly being introduced as internal corporate networks. It's getting old.
これに伴い、通信ネットワークとしての通話品
質の確保が重要となり、通話路の伝送レベル、伝
送遅延時間、伝送誤り率等の測定、試験、調整等
を効率良く行う必要がある。このため、発信側か
らだけで回線試験のできる回線折返し試験方法の
提供が要望される。 Along with this, it has become important to ensure call quality as a communication network, and it is necessary to efficiently measure, test, and adjust the transmission level, transmission delay time, transmission error rate, etc. of the communication path. Therefore, it is desired to provide a line loopback test method that allows line testing to be performed only from the originating side.
第３図は従来例の回線折返し試験方式ブロツク
図であり、１は着信側の伝送装置試験盤でＡ１，
Ａ２，Ｂ１，Ｂ２はその切分け端子、２は着信側
の伝送装置、３は発信側の伝送装置、４は発信側
の伝送装置試験盤でＣ１，Ｃ２，Ｄ１，Ｄ２はそ
の切分け端子、５は試験信号発信器、６は試験信
号受信器を示す。
Fig. 3 is a block diagram of a conventional circuit loopback test system.
A2, B1, B2 are the isolation terminals, 2 is the transmission device on the receiving side, 3 is the transmission device on the originating side, 4 is the transmission device test board on the originating side, C1, C2, D1, D2 are the isolation terminals, 5 is a test signal transmitter, and 6 is a test signal receiver.
以下全図を通じ同一符号は同一対象物を示す。 The same reference numerals indicate the same objects throughout the figures below.
回線試験には、伝送装置試験盤１の端子Ａ１，
Ａ２及びＢ１，Ｂ２をそれぞれ切分け、端子Ａ１
とＢ１を人手で接続し、折返し回路を形成する。
また伝送装置試験盤４の端子Ｃ１，Ｃ２及びＤ
１，Ｄ２もそれぞれ切分け、端子Ｃ１に試験信号
発信器５を、端子Ｄ１には試験信号受信器６を接
続する。 For line testing, terminal A1 of transmission equipment test board 1,
Separate A2, B1, and B2, and connect terminal A1.
and B1 are connected manually to form a return circuit.
Also, terminals C1, C2 and D of the transmission equipment test board 4
1 and D2 are also separated, and the test signal transmitter 5 is connected to the terminal C1, and the test signal receiver 6 is connected to the terminal D1.
試験対象の通話路は伝送装置試験盤１で折返さ
れているので、前記試験器により発信側から試験
信号等を送り、同じ発信側で該信号等を受けて、
伝送レベル、伝送遅延時間、伝送誤り率等の試験
ができる。 Since the communication path to be tested is looped back at the transmission device test board 1, the tester sends a test signal etc. from the transmitting side, receives the signal etc. from the same transmitting side, and
Can test transmission levels, transmission delay times, transmission error rates, etc.
しかしながら従来の方式においては、折返し試
験をするためには着信側にも人手を要し、試験の
効率が悪く、また伝送路だけの試験で、ネツトワ
ークフレームは対象外となり、実際の通話回線と
状況が異なる問題点がある。
However, in the conventional method, the test efficiency is low because it requires labor on the receiving side to conduct a loopback test, and the test is only on the transmission path, excluding the network frame, and it is difficult to test the actual call line. There are problems with different situations.
上記問題点の解決は、第１図の本発明の原理ブ
ロツク図の如く、ネツトワークフレーム７と中央
制御装置１３及び両方向トランク８を有する交換
機と、交換機側の伝送装置２及び伝送路を経由し
た発信側の伝送装置３とそれに付属した試験用の
ダイヤル装置９からなる通信システムにおいて、
回線折返し試験用の特定の選択信号と、該特定
の選択信号により、中央制御装置１３が、両方向
トランク８の出線を収容したネツトワークフレー
ム７の入側収容端子ａと出側収容端子ｂを接続
し、通話チヤンネル７１０を構築する手段を設
け、
前記試験用のダイヤル装置９からの特定の選択
信号により、交換機の両方向トランク８とネツト
ワークフレーム７を含めた、伝送装置の発信側か
らの折返し回路を形成する本発明の回線折返し試
験方式により解決される。
The solution to the above problem is as shown in the principle block diagram of the present invention in FIG. In a communication system consisting of a transmission device 3 on the originating side and a test dialing device 9 attached thereto, the central control device 13 uses a specific selection signal for a circuit loopback test and the specific selection signal to control a bidirectional trunk 8. Means is provided for connecting the incoming accommodation terminal a and the outgoing accommodation terminal b of the network frame 7 that accommodated the outgoing line to construct a communication channel 710, and a specific selection signal from the test dialing device 9 is provided. This is solved by the circuit loopback test scheme of the present invention, which forms a loopback circuit from the originating side of the transmission equipment, including the bidirectional trunk 8 of the exchange and the network frame 7.
本発明によれば、ダイヤル装置９が、伝送装置
３，２を経由して両方向トランク８に起動をか
け、特定の選択信号を与えると、該両方向トラン
ク８は中央制御装置１３に試験呼であることを識
別させ、中央制御装置１３は、両方向トランク８
の出線を収容したネツトワークフレーム７の入側
収容端子ａと出側収容端子ｂを接続する、通話チ
ヤンネル７１０を構築することにより、閉ループ
回路をつくる。
According to the invention, when the dialing device 9 activates the bidirectional trunk 8 via the transmission devices 3, 2 and provides a specific selection signal, the bidirectional trunk 8 informs the central control device 13 that it is a test call. The central controller 13 identifies that the bidirectional trunk 8
A closed loop circuit is created by constructing a communication channel 710 that connects the input side accommodation terminal a and the output side accommodation terminal b of the network frame 7 which accommodates the outgoing lines of the network frame 7.
これにより発信側の伝送装置から折返し試験回
路が自動的に作成され、回線試験の効率化が図ら
れると共に、ネツトワークフレームを含めた実際
の回線による回線試験を行うことができる。 As a result, a return test circuit is automatically created from the transmission device on the originating side, making line testing more efficient and making it possible to perform line testing using an actual line including a network frame.
以下図示実施例により本発明を具体的に説明す
る。
The present invention will be specifically explained below with reference to illustrated examples.
第２図は本発明の実施例の回線折返し試験方式
ブロツク図であり、１′は伝送装置試験盤、２′は
伝送装置で、２０１は多重化信号を分離する分離
回路、２０２はダイヤル信号等を受ける制御信号
回路、３′は伝送装置で、３０１はダイヤル信号
等を多重化する多重化回路、３０２は制御信号回
路、４′は伝送装置試験盤で、Ｆ１，Ｆ２はその
切分け端子、７０１はラインリンクフレーム、７
０２はジヤンクタリンクフレーム、７０３はトラ
ンクリンクフレーム、８０１は起動・選択信号受
信回路、８０２は切替えリレーＲでr1，r2，r3は
その接点、８０３はハイブリツドトランスＨ、９
はダイヤル装置、１０はトランク等の状態を走査
する走査装置、１１はリレー制御装置、１２はネ
ツトワーク制御装置、１４は中央制御装置１３と
走査装置１０等の通話系装置の間で情報を受信し
て分配を行う信号受信分配装置を示す。 FIG. 2 is a block diagram of a line loopback test system according to an embodiment of the present invention, where 1' is a transmission device test board, 2' is a transmission device, 201 is a separation circuit for separating multiplexed signals, 202 is a dial signal, etc. 3' is a transmission device, 301 is a multiplexing circuit for multiplexing dial signals, etc., 302 is a control signal circuit, 4' is a transmission device test board, F1 and F2 are its isolation terminals, 701 is a line link frame, 7
02 is a junker link frame, 703 is a trunk link frame, 801 is a start/selection signal receiving circuit, 802 is a switching relay R and r 1 , r 2 , r 3 are its contacts, 803 is a hybrid transformer H, 9
10 is a dialing device; 10 is a scanning device for scanning the status of trunks, etc.; 11 is a relay control device; 12 is a network control device; 14 is a device for receiving information between the central control device 13 and communication devices such as the scanning device 10. 1 shows a signal receiving and distributing device that performs distribution.
回線折返し試験用には特定の選択信号、例えば
107番が使われる。 For line loop testing, specific selection signals, e.g.
Number 107 is used.
ダイヤル装置９より起動をかけると、制御信号
回路３０２、多重化回路３０１、伝送路、分離回
路２０１、制御信号回路２０２を経由して起動・
選択信号受信回路８０１を起動する。 When activation is applied from the dial device 9, the activation and activation are performed via the control signal circuit 302, multiplexing circuit 301, transmission line, separation circuit 201, and control signal circuit 202.
The selection signal receiving circuit 801 is activated.
走査装置１０は走査により、両方向トランク８
の起動・選択信号受信回路８０１の起動信号を識
別し、信号受信分配装置１４を介して中央制御装
置１３に起動がかかつたことを認識させ、選択信
号の受信準備を行なわせる。 The scanning device 10 scans the bidirectional trunk 8
The activation signal of the activation/selection signal receiving circuit 801 is identified, the central control unit 13 is made to recognize that activation has been applied via the signal reception/distribution device 14, and is made to prepare to receive the selection signal.
ダイヤル装置９より回線折返し試験を指示する
選択信号である前記107番を送出すると、両方向
トランク８の起動・選択信号受信回路８０１はこ
れを受信し、走査装置１０がこれを走査して、信
号受信分配装置１４を介して中央制御装置１３に
選択信号を伝える。 When the dialing device 9 sends out the number 107, which is a selection signal instructing a line loopback test, the activation/selection signal receiving circuit 801 of the bidirectional trunk 8 receives it, and the scanning device 10 scans it to receive the signal. The selection signal is conveyed to the central control unit 13 via the distribution device 14 .
中央制御装置１３は、該選択信号により試験呼
であることを認識し、図示されていないメモリ装
置と連動して、両方向トランク８の出線が収容さ
れているラインリンクフレーム７０１の入側収容
端子ａの位置とトランクリンクフレーム７０３の
出側収容端子ｂの位置を知り、空いているライン
リンク、ジヤンクタリンク、トランクリンクを探
して、接続路を決定した後、ネツトワーク制御装
置１２を介して、ラインリンクフレーム７０１、
ジヤンクタリンクフレーム７０２、トランクリン
クフレーム７０３の通話路スイツチを動作させ通
話チヤンネル７１を構築する。 The central control unit 13 recognizes that it is a test call based on the selection signal, and, in conjunction with a memory device (not shown), selects the input side accommodation terminal of the line link frame 701 in which the outgoing line of the bidirectional trunk 8 is accommodated. After knowing the position of terminal a and the position of the output accommodation terminal b of the trunk link frame 703, searching for vacant line links, junction links, and trunk links and determining the connection path, , line link frame 701,
The communication path switches of the junker link frame 702 and the trunk link frame 703 are operated to construct the communication channel 71.
また信号受信分配装置１４を介して、リレー制
御装置１１により両方向トランク８のリレーＲ８
０２を動作させ、その接点r1，r2，r3を閉じて、
前記通話チヤンネル７１０と接続させ、閉ループ
を完成させる。 The relay R8 of the bidirectional trunk 8 is also controlled by the relay control device 11 via the signal reception distribution device 14.
02 and close its contacts r 1 , r 2 , r 3 ,
Connect with the communication channel 710 to complete a closed loop.
これにより、折返し試験回路が形成され、試験
信号発信器５の試験信号は、該折返し試験回路を
通り試験信号受信器６に受信されて、従来と同じ
く品質確保のための各種の試験が可能となる。 As a result, a loopback test circuit is formed, and the test signal from the test signal transmitter 5 passes through the loopback test circuit and is received by the test signal receiver 6, making it possible to perform various tests to ensure quality as in the past. Become.
かくして、着信局側に人手を要しない、ネツト
ワークフレーム７を含む実際の回線による効率的
な回線折返し試験を実施出来る。 In this way, an efficient line loopback test can be carried out using an actual line including the network frame 7 without requiring any personnel on the receiving station side.
〔発明の効果〕
以上詳細に説明せる如く、本発明によれば、発
信側の伝送装置から折返し試験回路が自動的に作
成され、回線試験の効率化が図られると共に、ネ
ツトワークフレームを含めた実際の回線による回
線折返し試験を実施出来る効果がある。[Effects of the Invention] As explained in detail above, according to the present invention, a loopback test circuit is automatically created from the transmission device on the sending side, improving the efficiency of line testing, and This has the effect of allowing line loopback tests to be carried out using actual lines.
第１図の本発明の原理ブロツク図、第２図は本
発明の実施例の回線折返し試験方式ブロツク図、
第３図は従来例の回線折返し試験方式ブロツク図
である。
図において、１′，４′は伝送装置試験盤、２′，
３′は伝送装置、２０１は分離回路、３０１は多
重化回路、２０２，３０２は制御信号回路、５は
試験信号発信器、６は試験信号受信器、７はネツ
トワークフレーム、７０１はラインリンクフレー
ム、７０２はジヤンクタリンクフレーム、７０３
はトランクリンクフレーム、７１０は通話チヤン
ネル、８は両方向トランク、８０１は起動・選択
信号受信回路、８０２は切替えリレー、８０３は
ハイブリツドトランス、９はダイヤル装置、１０
は走査装置、１１はリレー制御装置、１２はネツ
トワーク制御装置、１３は中央制御装置、１４は
信号受信分配装置を示す。
FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is a block diagram of a line loopback test method according to an embodiment of the present invention,
FIG. 3 is a block diagram of a conventional line loopback test method. In the figure, 1', 4' are transmission equipment test boards, 2',
3' is a transmission device, 201 is a separation circuit, 301 is a multiplexing circuit, 202 and 302 are control signal circuits, 5 is a test signal transmitter, 6 is a test signal receiver, 7 is a network frame, and 701 is a line link frame. , 702 is a junker link frame, 703
is a trunk link frame, 710 is a communication channel, 8 is a bidirectional trunk, 801 is an activation/selection signal receiving circuit, 802 is a switching relay, 803 is a hybrid transformer, 9 is a dial device, 10
11 is a scanning device, 11 is a relay control device, 12 is a network control device, 13 is a central control device, and 14 is a signal reception and distribution device.
Claims (1)
及び両方向トランク８を有する交換機と、交換機
側の伝送装置２及び伝送路を経由した発信側の伝
送装置３とそれに付属した試験用のダイヤル装置
９からなる通信システムにおいて、 回線折返し試験用の特定の選択信号と、 該特定の選択信号により、中央制御装置１３
が、両方向トランク８の出線を収容したネツトワ
ークフレーム７の入側収容端子ａと出側収容端子
ｂを接続し、通話チヤンネル７１０を構築する手
段を設け、 前記試験用のダイヤル装置９からの特定の選択
信号により、交換機の両方向トランク８とネツト
ワークフレーム７を含めた、伝送装置の発信側か
らの折返し回路を形成することを特徴とする回線
折返し試験方式。[Claims] 1. Network frame 7 and central control device 13
In a communication system consisting of an exchange having bidirectional trunks 8, a transmission device 2 on the exchange side, a transmission device 3 on the originating side via the transmission line, and a dialing device 9 for testing attached to it, a specific a selection signal; and the specific selection signal causes the central controller 13 to
However, a means is provided for connecting the incoming receiving terminal a and the outgoing receiving terminal b of the network frame 7 that accommodates the outgoing line of the bidirectional trunk 8, and constructing a communication channel 710, and a means is provided for constructing a communication channel 710, and A line loopback test method characterized in that a loopback circuit is formed from the originating side of the transmission equipment, including the bidirectional trunk 8 of the exchange and the network frame 7, by means of a specific selection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27648185A JPS62136156A (en) | 1985-12-09 | 1985-12-09 | System for performing loop back test on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27648185A JPS62136156A (en) | 1985-12-09 | 1985-12-09 | System for performing loop back test on line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62136156A JPS62136156A (en) | 1987-06-19 |
| JPH0371830B2 true JPH0371830B2 (en) | 1991-11-14 |
Family
ID=17570052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27648185A Granted JPS62136156A (en) | 1985-12-09 | 1985-12-09 | System for performing loop back test on line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62136156A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0761101B2 (en) * | 1988-09-19 | 1995-06-28 | 日本電気株式会社 | In-band signal transmission system |
| JPH0761102B2 (en) * | 1988-10-21 | 1995-06-28 | 日本電気株式会社 | In-band signaling device |
-
1985
- 1985-12-09 JP JP27648185A patent/JPS62136156A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62136156A (en) | 1987-06-19 |
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