JPH01320832A - Test system for communication line - Google Patents
Test system for communication lineInfo
- Publication number
- JPH01320832A JPH01320832A JP63155561A JP15556188A JPH01320832A JP H01320832 A JPH01320832 A JP H01320832A JP 63155561 A JP63155561 A JP 63155561A JP 15556188 A JP15556188 A JP 15556188A JP H01320832 A JPH01320832 A JP H01320832A
- Authority
- JP
- Japan
- Prior art keywords
- line
- signal
- test
- loopback
- station
- 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
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000004891 communication Methods 0.000 title claims description 10
- 238000009434 installation Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101150006573 PAN1 gene Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は通信回線の試験方式に関し、特に音声帯域回線
のループバック試験による通信回線の試験方式に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication line testing method, and more particularly to a communication line testing method using a loopback test of a voice band line.
従来、この種の通信回線の試験方式は、第２図（ａ）、
（ｂ）に示すように無人局Ａと有人局Ｂが音声帯域回線
で結ばれている場合の回線試験には、次のような方式が
あった。Conventionally, the testing method for this type of communication line is as shown in Fig. 2(a).
As shown in (b), when unmanned station A and manned station B are connected by a voice band line, the following methods were available for line testing.
（ａ）無人局Ａに保守者が出向き有人局Ｂとの間で対向
試験を実施する。(a) A maintenance person goes to unmanned station A and conducts a face-to-face test with manned station B.
即ち、第２図（ａ）においてテスト信号発信器１１．１
３からテスト信号を回線１７に送出し、測定器１２．１
４でテスト信号を受信して回線１７の試験を行なう。That is, in FIG. 2(a), the test signal transmitter 11.1
3 sends a test signal to the line 17, and the measuring device 12.1
4, the test signal is received and the line 17 is tested.
（ｂ）無人局Ａに試験用の切替装置１５を設置し、無人
局Ａと有人局Ｂとの間に制御用回線１９を布設し、有人
局Ｂから無人局Ａへ制御用回線１つを通して制御装置１
６から制御信号を送って無人局Ａの切替装置１５を動作
させ、希望する被試験の回線１８にループバックをかけ
て有人局Ｂ側で試験を実施する。(b) Install a test switching device 15 in unmanned station A, install a control line 19 between unmanned station A and manned station B, and pass one control line from manned station B to unmanned station A. Control device 1
A control signal is sent from 6 to operate the switching device 15 of unmanned station A, loopback is applied to the desired line 18 to be tested, and the test is performed on the manned station B side.
上述した従来の通信回路の試験方式は、第２図（ａ）に
示す方式では試験を実施する度に無人局へ保守者が出向
しなければならす膨大な人件費と、長距離の場合は移動
のために多くの時間を費し、第２図（ｂ）に示す方式で
は無人局と有人局側に制御用回線を布設して、無人局側
に切替装置が必要なことから初期設備投資に膨大の費用
がかかるという欠点がある。The conventional communication circuit testing method described above, as shown in Figure 2 (a), requires enormous personnel costs, as maintenance personnel must be dispatched to the unmanned station each time a test is carried out, and in the case of long distances, the maintenance personnel must travel to the unmanned station. In the method shown in Figure 2 (b), a control line is installed between the unmanned station and the manned station, and a switching device is required on the unmanned station side, which reduces the initial capital investment. The disadvantage is that it costs a lot of money.
本発明の通信回線の試験は、無人局と有人局との間の音
声帯域の回線を試験する通信回線の試験方式において、
前記有人局内に前記回線の第１の線に実用帯域の境界上
の周波数のループバック信号とテスト信号とを送出し前
記回線の第２の線からの前記テスト信号を受信して測定
する測定手段を有し、前記無人局内に前記第１の線から
前記ループバック信号を受信して前記第１の線と前記第
２の線とを閉じる閉結手段を有している。The communication line test of the present invention is a communication line test method that tests a voice band line between an unmanned station and a manned station.
A measuring means for transmitting a loopback signal and a test signal at a frequency on the boundary of a practical band to a first line of the line in the manned station, and receiving and measuring the test signal from a second line of the line. and has a closing means in the unmanned station for receiving the loopback signal from the first line and closing the first line and the second line.
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.
第１図は本発明の一実施例を示ずブロック図である。FIG. 1 is a block diagram showing one embodiment of the present invention.
第１図において、本実施例は、無人局Ａと有人局８間の
ａ線とｂ線とでなる音声帯域回線ケーブル５を試験する
ために、有人局Ｂ側にａ線に接続しテスト信号及びルー
プバック信号を発生する信号発生器１と、ｂ線に接続し
てテスト信号を測定する測定器４とを有し、無人局Ａ側
にａ線に接続してループバック信号を受信する狭帯域の
パン１〜パスフイルタを有するレシーバ２と、レシーバ
２の制御によってａ線とｂ線とを結合するスイッチ３と
を有して構成している。In FIG. 1, in this embodiment, in order to test the voice band line cable 5 consisting of the a line and the b line between the unmanned station A and the manned station 8, the test signal is connected to the a line on the manned station B side. and a signal generator 1 that generates a loopback signal, and a measuring device 4 that connects to the B line and measures the test signal. The receiver 2 has band pan 1 to pass filters, and a switch 3 that connects the a-line and the b-line under the control of the receiver 2.
次に、本実施例の動作について説明する。Next, the operation of this embodiment will be explained.
音声帯域回線ケーブル５を試験する場合、信号発生器１
はまず音声実用帯域峡帯上の周波数のループバック信号
を無人局Ａに送出する。無人局Ａのレシーバ２は狭帯域
のバントパスフィルタを有し、予め決められたループバ
ック信号に相当する周波数信号のみ受は付ける。When testing the voice band line cable 5, the signal generator 1
First, a loopback signal of a frequency above the practical voice band is sent to unmanned station A. The receiver 2 of the unmanned station A has a narrowband bandpass filter, and only receives frequency signals corresponding to a predetermined loopback signal.
レシーバ２はループバック信号を受信するとスイッチ３
に切替制御を行い、スイッチ３はａ線とｂ線とを破線図
示のように閉してループバック状態にする。この状態で
有人局Ｂ側からのループハ。When receiver 2 receives the loopback signal, switch 3
The switch 3 closes the a line and the b line as shown by the broken line to enter a loopback state. In this state, loop from manned station B side.
ツク試験が可能となる。Testing becomes possible.
次に、信号発生器１からテスト信号をａ線に送出し、ｂ
線からのテスト信号を測定器４で測定して音声帯域回線
ケーブル５の試験を行う。ループバック信号は試験中も
継続して送出され、有人局Ｂでループバック状態を確認
する手段としている。Next, the signal generator 1 sends a test signal to line a, and
The voice band line cable 5 is tested by measuring the test signal from the line with a measuring device 4. The loopback signal is continuously sent out during the test, and is used as a means for checking the loopback state at manned station B.
このループバック信号は実用帯域の境界上の周波数であ
るなめループバック試験中にテスト信号に悪影響の及ば
ずことはない。Since this loopback signal has a frequency on the boundary of the practical band, there is no possibility that the test signal will be adversely affected during the loopback test.
ループバックを解除するには、信号発生器１がらループ
バック信号をオフにすれは無人局Ａのスイッチ３は実線
図示のように復旧する。To cancel the loopback, the signal generator 1 turns off the loopback signal, and the switch 3 of the unmanned station A is restored as shown by the solid line.
以上説明したように本発明は、有人局側がち音声帯域の
回線を無人局端で閉路させる制御信号と回線の試験信号
とを送出して有人局側で試験信号を測定することにより
、無人局に保守者を出向がせるとか、大規模な切替装置
を設置する必要がなくなるので、非常に簡単にループバ
ック試験が実施できて人件費の節約、設備投資の削減が
図れ経済に通信回線を試験できる効果がある。As explained above, the present invention enables the unmanned station to transmit a control signal and a line test signal to close the voice band line at the unmanned station end, and measure the test signal at the manned station side. Since there is no need to dispatch maintenance personnel to the site or install large-scale switching equipment, loopback tests can be performed very easily, saving labor costs and capital investment, making it an economical way to test communication lines. There is an effect that can be done.
第１図は本発明の一実施例を示すブロック図、第２図（
ａ）、（ｂ）はそれぞれ従来の通信回線の試験方式を示
すブロック図である。
１・・・信号発生器、２・・・レシーバ、３・・・スイ
ッチ、４．１２．１４・・・測定器、５・・・音声帯域
回線ケーブル、ＩＬ １３・・・信号発生器、１５・・
・切替装置、１６・・・制御装置、１７．１８・・・回
線、１９・・・制御用回線。FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 (
1A and 2B are block diagrams each showing a conventional communication line testing method. DESCRIPTION OF SYMBOLS 1...Signal generator, 2...Receiver, 3...Switch, 4.12.14...Measuring instrument, 5...Audio band line cable, IL 13...Signal generator, 15・・・
- Switching device, 16... Control device, 17.18... Line, 19... Control line.
Claims (1)
信回線の試験方式において、前記有人局内に前記回線の
第１の線に実用帯域の境界上の周波数のループバック信
号とテスト信号とを送出し前記回線の第２の線からの前
記テスト信号を受信して測定する測定手段を有し、前記
無人局内に前記第１の線から前記ループバック信号を受
信して前記第１の線と前記第２の線とを閉じる閉結手段
を有することを特徴とする通信回線の試験法式。In a communication line testing method for testing a voice band line between an unmanned station and a manned station, a loopback signal and a test signal of a frequency on the boundary of the practical band are connected to the first line of the line in the manned station. and measuring means for transmitting and measuring the test signal from the second line of the line, and receiving the loopback signal from the first line into the unmanned station and transmitting the test signal to the first line. and the second line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63155561A JPH01320832A (en) | 1988-06-22 | 1988-06-22 | Test system for communication line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63155561A JPH01320832A (en) | 1988-06-22 | 1988-06-22 | Test system for communication line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01320832A true JPH01320832A (en) | 1989-12-26 |
Family
ID=15608747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63155561A Pending JPH01320832A (en) | 1988-06-22 | 1988-06-22 | Test system for communication line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01320832A (en) |
-
1988
- 1988-06-22 JP JP63155561A patent/JPH01320832A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5930707A (en) | System for remotely testing a cellphone base station | |
| US4564933A (en) | Supervision of digital transmission systems | |
| JPS58120326A (en) | Automatic receiving gain controlling system for centralized monitoring system | |
| JPH0348704Y2 (en) | ||
| US2843668A (en) | Repeater testing system | |
| US3617639A (en) | Centrally monitored telemetry systems | |
| JP3267328B2 (en) | Wireless communication equipment | |
| JPS6020938B2 (en) | Data communication circuit remote testing method | |
| CN121367872B (en) | Multi-channel audio signal detection system based on CODEC chip and implementation method | |
| JP3096178B2 (en) | Transmitter / receiver for TDMA-TDD wireless communication device | |
| JPS6020646A (en) | Remote supervisory and controlling device for building | |
| SU566394A2 (en) | Apparatus for continuously monitoring the quality of long-distance telephone channels | |
| SU1040611A1 (en) | Device for monitoring amplification in uncaptured four-wire communications channels | |
| JPH1144717A (en) | System and method for automatically measuring disturbing wave | |
| JPH0212078B2 (en) | ||
| JPH0969805A (en) | Communications system | |
| JPH02260838A (en) | Maintenance test system | |
| JPH0414559B2 (en) | ||
| JPS581004Y2 (en) | acoustic coupler | |
| JPH09130323A (en) | Mobile communication system with test function | |
| JPH01142944A (en) | Inspection system for single device body | |
| SU588641A1 (en) | Data transmission channel monitor | |
| KR950023162A (en) | Real-time situation monitoring device using subscriber line | |
| JPH03207150A (en) | Test system for emergency telephone set | |
| JP2540937B2 (en) | Maintenance test method |