JPH0336862A - Isdn remote subscriber test system - Google Patents

Isdn remote subscriber test system

Info

Publication number
JPH0336862A
JPH0336862A JP1172350A JP17235089A JPH0336862A JP H0336862 A JPH0336862 A JP H0336862A JP 1172350 A JP1172350 A JP 1172350A JP 17235089 A JP17235089 A JP 17235089A JP H0336862 A JPH0336862 A JP H0336862A
Authority
JP
Japan
Prior art keywords
isdn
subscriber line
circuit
remote
test
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.)
Granted
Application number
JP1172350A
Other languages
Japanese (ja)
Other versions
JP2508844B2 (en
Inventor
Masao Hashimoto
雅男 橋本
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 JP1172350A priority Critical patent/JP2508844B2/en
Publication of JPH0336862A publication Critical patent/JPH0336862A/en
Application granted granted Critical
Publication of JP2508844B2 publication Critical patent/JP2508844B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/301—Circuit arrangements at the subscriber's side of the line

Landscapes

  • Monitoring And Testing Of Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To attain accurate measurement by providing a circuit inserting and separating an optional channel to an exchange side and a remote equipment side of a multiplexed transmission line and connecting the circuit to a conversion circuit so as to conduct the test. CONSTITUTION:A remote subscriber line accommodation equipment 1 connect ISDN subscribers 23, 24 to ISDN subscriber termination circuits 4, 5 via test pull-in relays 2, 3. Each subscriber line is subject to multiplex and demultiplex to a multiplex transmission line 12 by a multiplex/demultiplex circuit 8. Moreover, a multiplex transmitter 13 has a multiplex/demultiplex circuit 15 inserting and separating a test channel from a transmission interface circuit 14 and the multiplex transmission line 12. The circuit 8 uses an ISDN subscriber terminal conversion circuit (a) and an ISDN exchange (b) uses an ISDN basic access line 20 to connect the test equipment. The conversion circuit is provided to the test equipment and accurate measurement is attained even at a remote location.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はＩ　ＳＤＮ遠隔加入者線試験方式に関し、特に
遠隔地の加入者線のピットエラーレイト測定を行うＩ　
ＳＤＮ遠隔加入者線試験方式に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an ISDN remote subscriber line testing method, and particularly to an ISDN remote subscriber line testing method for measuring the pit error rate of a subscriber line in a remote location.
Concerning SDN remote subscriber line test method.

〔従来の技術〕[Conventional technology]

従来の遠隔加入者線試験方式は、第２図に示すように遠
隔加入者線収容装置２５に収容する加入者２３．２４を
、試験用引き込みリレー２，３を介して引き込んだのち
加入者線を多重化した多重化伝送路１２とは別に遠隔地
試験用引き込み専用線Ｃをもち、Ｉ　ＳＤＮ交換機側の
試験装置２２に接続して試験を行っていた。In the conventional remote subscriber line testing method, as shown in FIG. In addition to the multiplexed transmission line 12, which is a multiplexed transmission line 12, a dedicated line C for remote testing is provided, and tests are conducted by connecting it to the testing equipment 22 on the ISDN exchange side.

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

上述した従来の遠隔加入者線試験方式は、ＩＳＤＮ交換
機と遠隔加入者線収容装置との間の距離が長いと、試験
装置で測定するピットエラーレイト値には長距離伝送に
よる誤り率の増加分が含まれ正確な測定値を得られない
ので、誤り率の低い伝送路を試験用の専用線として多重
化伝送路とは別に設けなければならないという問題点が
ある。In the conventional remote subscriber line testing method described above, if the distance between the ISDN exchange and the remote subscriber line accommodation equipment is long, the pit error rate measured by the test equipment will include the increase in error rate due to long distance transmission. is involved, making it impossible to obtain accurate measured values.Therefore, there is a problem in that a transmission line with a low error rate must be provided as a dedicated line for testing, separate from the multiplexed transmission line.

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

本発明のＩ　ＳＤＮ遠隔加入者線試験方式は、遠隔地で
遠隔加入者線収容装置に収容されたＩＳＤＮ加入者線を
試験するＩ　ＳＤＮ交換機のＩＳＤＮ遠隔加入者線試験
方式において、多重化された伝送路に接続する前記Ｉ　
ＳＤＮ交換機および前記遠隔加入者線収容装置に前記多
重化された伝送路に含まれる任意のチャネルを挿入分離
する多重・分離回路を設け、挿入分離された前記任意の
チャネルに前記Ｉ　ＳＤＮ交換機側ではＩ　ＳＤＮベー
シックアクセス加入者線で接続する試験装置を前記遠隔
加入者線収容装置側では試験対象の加入者線に試験用引
き込みリレーを介して接続する変換回路をそれぞれ接続
し加入者線の試験を行う構成である。The ISDN remote subscriber line testing method of the present invention is an ISDN remote subscriber line testing method for an ISDN exchange that tests an ISDN subscriber line accommodated in a remote subscriber line accommodation device at a remote location. The above I connected to the transmission line
A multiplexing/demultiplexing circuit for inserting and demultiplexing arbitrary channels included in the multiplexed transmission path is provided in the SDN exchange and the remote subscriber line accommodation device, and the I SDN exchange side I Test the subscriber line by connecting the test equipment connected by the SDN basic access subscriber line to a conversion circuit connected to the subscriber line to be tested via a test lead-in relay on the remote subscriber line accommodation equipment side. This is the configuration to do it.

〔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.

第１図は本発明の一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.

遠隔加入者線収容装置１は、ＩＳＤＮ加入者２３．２４
を試験用引き込みリレー２，３を介してＩ　ＳＤＮ加入
者線終端回路４，５に接続し、各加入者線の２８＋Ｄは
多重・分離回路８によりＩ　ＳＤＮ交換機への多重化伝
送路１２に多重・分離される。１１は多重化伝送路１２
へのインタフェース回路である。多重・分離回路８は、
Ｉ　ＳＤＮベーシックアクセス加入者線のレイヤ１の変
換を行うＴ　ＳＤＮ加入者線端末側変換回路ａに試験用
チャネルを接続している。Ｉ　ＳＤＮ交換機側の多重化
伝送路収容装置１３は、伝送路インタフェース回＃ｉ１
４と多重化伝送１ｉ’＋１２から試験用チャネルを挿入
分離する多重・分離回路１５とがあり、分離された試験
用チャネルをＩ　ＳＤＮ加入者線網側変更回路すにより
、Ｉ　ＳＤＮベーシックアクセス加入者線２０のレイヤ
１に変換し、試験装置２２に接続する。The remote subscriber line accommodation device 1 is connected to ISDN subscribers 23 and 24.
are connected to the ISDN subscriber line termination circuits 4 and 5 via the test lead-in relays 2 and 3, and 28+D of each subscriber line is multiplexed to the multiplex transmission line 12 to the ISDN exchange by the multiplexing/demultiplexing circuit 8.・Separated. 11 is a multiplex transmission line 12
This is an interface circuit to the The multiplexing/separating circuit 8 is
The test channel is connected to the T SDN subscriber line terminal side conversion circuit a that performs layer 1 conversion of the ISDN basic access subscriber line. The multiplex transmission line accommodating device 13 on the I SDN exchange side has a transmission line interface circuit #i1.
4 and a multiplexing/demultiplexing circuit 15 for inserting and demultiplexing a test channel from the multiplexed transmission 1i'+12. It is converted to layer 1 of line 20 and connected to test equipment 22.

次に、Ｉ　ＳＤＮ加入者２３に接続される加入者線のピ
ットエラーレイト測定方法について説明する。Next, a method for measuring the pit error rate of a subscriber line connected to the ISDN subscriber 23 will be explained.

Ｉ　ＳＤＮ交換機の試験装置２２は、Ｉ　ＳＤＮ交換機
と遠隔加入者線収容装置１との間で定義された制御信号
（遠隔加入者線収容装置１内の制御リンクボート９とＩ
　ＳＤＮ交換機側制御リンクボート１７間の制御信号〉
により、試験用引き込みリレー２をＩ　ＳＤＮ加入者線
端末側変換回＆ｔｆｔａに切替える。Ｉ　ＳＤＮ加入者
線端末側変換回路ａはリレー接続によりＩ　ＳＤＮ加入
者２３の網側に位置するため、Ｉ　ＳＤＮユーザ網イン
タフェースで規定するレイヤ１の網側終端回路をもつこ
とにより、試験用引き込みチャネル２Ｂ＋Ｄを多重分離
回路８に接続することができる。又多重・分離回路８は
、多重化伝送路１２の空チャネルを利用して、引き込み
チャネル２Ｂ＋Ｄを決め、Ｉ　ＳＤＮ交換機に伝送し、
Ｉ　ＳＤＮ交換機側の多重・分離回路１５により再度、
引き込みチャネル２Ｂ＋Ｄを取り出す、Ｉ！り出された
２Ｂ＋Ｄは、Ｉ　ＳＤＮ加入者線網側変換回路すに端末
側レイヤ１終端回路をもつことで試験装置２２に接続で
きる。このようにして試験装置２２は、遠隔地加入者２
３を収容する網側装置となることができ、試験装置２２
から加入者線のピットエラーレイト測定等が行える。但
しこのとき、遠隔装置と交換機間の多重化伝送路１２は
、誤り率が低いことが前提である。The test equipment 22 of the I SDN exchange uses control signals defined between the I SDN exchange and the remote subscriber line accommodation equipment 1 (the control link port 9 in the remote subscriber line accommodation equipment 1 and the I
Control signal between SDN exchange side control link boat 17>
As a result, the test lead-in relay 2 is switched to the ISDN subscriber line terminal side conversion circuit &tfta. Since the I SDN subscriber line terminal side conversion circuit a is located on the network side of the I SDN subscriber 23 through relay connection, it has a Layer 1 network side termination circuit specified by the I SDN user network interface, so it can be Channels 2B+D can be connected to a demultiplexer circuit 8. Also, the multiplexing/demultiplexing circuit 8 uses the empty channel of the multiplex transmission line 12 to determine the lead-in channel 2B+D, and transmits it to the ISDN exchange.
The multiplexing/demultiplexing circuit 15 on the I SDN exchange side again
Take out lead-in channel 2B+D, I! The extracted 2B+D can be connected to the test equipment 22 by having a layer 1 termination circuit on the terminal side in addition to the conversion circuit on the ISDN subscriber line network side. In this way, the test device 22
3, the test device 22
You can measure the pit error rate of subscriber lines from here. However, at this time, it is assumed that the multiplex transmission line 12 between the remote device and the exchange has a low error rate.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は多重化された伝送路の交換
機側および遠隔装置側に伝送路がら任意のチャネルを挿
入分離する回路で設け、この挿入分離された任意チャネ
ルにＩ　ＳＤＮ交換機側ではＩ　ＳＤＮベーシックアク
セスライン２Ｂ＋Ｄで接続する試験装置をまた遠隔地側
では加入者線収容装置に収容される各々の加入者線に試
験用引き込みリレーを介して接続する変換回路を設ける
ことにより試験装置は多重化伝送路及び試験用引き込み
リレーを介して遠隔地に収容される加入者線に接続でき
遠隔地での加入者線のピットエラーレイト測定を経済的
に行える効果がある。As explained above, the present invention is provided with a circuit for inserting and separating arbitrary channels from the transmission line on the exchange side and the remote equipment side of the multiplexed transmission line, and the I SDN exchange side is equipped with a circuit for inserting and separating arbitrary channels from the transmission line. The test equipment can be multiplexed by providing a conversion circuit that connects the test equipment connected by the SDN basic access line 2B+D to each subscriber line accommodated in the subscriber line accommodation equipment via test lead-in relays on the remote side. It is possible to connect to a subscriber line accommodated in a remote location via a standard transmission line and a test lead-in relay, and has the effect of making it possible to economically measure the pit error rate of a subscriber line in a remote location.

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

第１図は本発明の一実施例のブロック図、第２図は従来
の試験方式のブロック図である。 １．２５・・・遠隔加入者線収容装置、２．３・・・試
験用引き込みリレー、４，５・・・ＩＳＤＮ加入者線終
端回路、８．１５・・・多重・分離回路、９・・・制御
リンクボート、１１・・・インタフェース回路、１２・
・・多重化伝送路、１３・・・多重化伝送路収容装置、
１４・・・多重化伝送路インタフェース回路、１７・・
・Ｉ　ＳＤＮ交換機制御リンクボート、２０・・・Ｉ　
ＳＤＮベーシックアクセス加入者線、２２・・・試験装
置、２３．２４・・・Ｉ　ＳＤＮ加入者、ａ・・・Ｉ　
ＳＤＮ加入者線端末側変換回路、ｂ・・・Ｉ　ＳＤＮ加
入者線網側変換回路、Ｃ・・・遠隔地試験用引き込み専
用線。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional test method. 1.25... Remote subscriber line accommodation device, 2.3... Test lead-in relay, 4, 5... ISDN subscriber line termination circuit, 8.15... Multiplexing/separating circuit, 9. ...Control link boat, 11...Interface circuit, 12.
... multiplexed transmission line, 13... multiplexed transmission line accommodation device,
14...Multiplex transmission line interface circuit, 17...
・I SDN exchange control link boat, 20...I
SDN basic access subscriber line, 22...Test equipment, 23.24...I SDN subscriber, a...I
SDN subscriber line terminal side conversion circuit, b...I SDN subscriber line network side conversion circuit, C...Lead-in dedicated line for remote location testing.

Claims (1)

【特許請求の範囲】[Claims] 　遠隔地で遠隔加入者線収容装置に収容されたＩＳＤＮ
加入者線を試験するＩＳＤＮ交換機のＩＳＤＮ遠隔加入
者線試験方式において、多重化された伝送路に接続する
前記ＩＳＤＮ交換機および前記遠隔加入者線収容装置に
前記多重化された伝送路に含まれる任意のチャネルを挿
入分離する多重・分離回路を設け、挿入分離された前記
任意のチャネルに前記ＩＳＤＮ交換機側ではＩＳＤＮベ
ーシックアクセス加入者線で接続する試験装置を前記遠
隔加入者線収容装置側では試験対象の加入者線に試験用
引き込みリレーを介して接続する変換回路をそれぞれ接
続し加入者線の試験を行うことを特徴とするＩＳＤＮ遠
隔加入者線試験方式。ISDN accommodated in remote subscriber line accommodation equipment in remote locations
In an ISDN remote subscriber line testing method for an ISDN exchange that tests a subscriber line, the ISDN exchange and the remote subscriber line accommodation device connected to a multiplexed transmission line are provided with arbitrary signals included in the multiplexed transmission line. A test device is provided that connects a multiplexing/demultiplexing circuit for inserting and demultiplexing channels, and a test device that connects the inserted and demultiplexed arbitrary channels with an ISDN basic access subscriber line on the ISDN exchange side is a test target on the remote subscriber line accommodation device side. ISDN remote subscriber line testing method, characterized in that the subscriber lines are tested by connecting conversion circuits connected to the subscriber lines via test lead-in relays.
JP1172350A 1989-07-03 1989-07-03 ISDN remote subscriber line test method Expired - Lifetime JP2508844B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1172350A JP2508844B2 (en) 1989-07-03 1989-07-03 ISDN remote subscriber line test method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1172350A JP2508844B2 (en) 1989-07-03 1989-07-03 ISDN remote subscriber line test method

Publications (2)

Publication Number Publication Date
JPH0336862A true JPH0336862A (en) 1991-02-18
JP2508844B2 JP2508844B2 (en) 1996-06-19

Family

ID=15940274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1172350A Expired - Lifetime JP2508844B2 (en) 1989-07-03 1989-07-03 ISDN remote subscriber line test method

Country Status (1)

Country Link
JP (1) JP2508844B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4994208A (en) * 1973-01-10 1974-09-06
JPS5628549A (en) * 1979-08-15 1981-03-20 Nec Corp Remote station subscriber's line test system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4994208A (en) * 1973-01-10 1974-09-06
JPS5628549A (en) * 1979-08-15 1981-03-20 Nec Corp Remote station subscriber's line test system

Also Published As

Publication number Publication date
JP2508844B2 (en) 1996-06-19

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