JPS58121859A - Line monitor circuit - Google Patents
Line monitor circuitInfo
- Publication number
- JPS58121859A JPS58121859A JP442882A JP442882A JPS58121859A JP S58121859 A JPS58121859 A JP S58121859A JP 442882 A JP442882 A JP 442882A JP 442882 A JP442882 A JP 442882A JP S58121859 A JPS58121859 A JP S58121859A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- line
- voltage
- terminal
- operational amplifier
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、着信側の搬送端局装置と交換機内の入トラン
クを栢Ｊ：２憩式中継線の状態及び入トラ待
ンクの状態を監視する１ｇｌ巌監視回路に係シ、跡に回
路機構を小型化した回ｆ／Ｂ猷視回路に関する・（２）
技術の背景
近年、通信の分針では、通信技術の発展に伴い各種装置
の小型化が費求されているが、回＋１６ｉ監視回路も例
外でなく回路構成を小型化が賛水されている。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a 1GL monitoring circuit for monitoring the status of the carrier terminal equipment on the receiving side and the incoming trunk in the exchange: the status of the 2-way trunk line and the status of the incoming trunk. Regarding the F/B visual circuit with a miniaturized circuit mechanism, (2)
Background of the Technology In recent years, with the development of communication technology, there has been a demand for miniaturization of various devices for communication minute hands, and the time+16i monitoring circuit is no exception, and miniaturization of the circuit configuration has been encouraged.
（３）従来技術と間一点
薗１図及び第２因を用いで、従来の回線監視Ｎ路を説明
する。(3) The conventional line monitoring N-path will be explained using the prior art, Figure 1, and the second factor.
１ｇ１ｕシｙ、テムの概蚤図である。ｍにおいて、１は
発ｉ冑加入者、２Ｆｉ発イΔ拘交換機、３は発４４側信
号変換装置、４は受信＠信号変換装置、５は漕（＊１１
１１交換憎、６は；Ｍ （！ｉ側加入者、２はディジタ
ル伝送路％ ＯＧＴは出トランク、ｌｃＴは人トランク
でわる。This is a schematic flea diagram of 1g1u y, tem. In m, 1 is the originating i-subscriber, 2 is the originating i-Δconverter, 3 is the originating 44-side signal converter, 4 is the receiving @signal converter, and 5 is the subscriber (*11
11 exchanges, 6 is ;M (! i side subscriber, 2 is digital transmission line % OGT is outgoing trunk, lcT is human trunk.
第２図は従来の回線監視回路のｊａ成例を示す図用リレ
ー（以下、リレーｒｊｓ ｅ ｒｉｍ ）、ｒｊｌは発
Ｉ１１［起ｍ時応答用リレー（以下、リレーｒｊｓ）、
ｒｊ４Ｆｉ起動に合せてリレーＲＬＣを切ｐ離すリレー
（以下、リレー１１番）％ ｒｌｍは抵抗成頒累にて短
絡するリレー（以下、リレーｒｊｌ ）、ＲＬ暑及びＲ
Ｌｂは層、信者呼出し用リレー（以下、リレーｋＬ１．
ａ、ＲＬｂ）、ＲＬｃｄａＪ線被視用リレー（以下、′
リレーＲＬＣ）、ｌｌｃはリレーＲＬＣｖＩＩｋ点。Figure 2 shows an example of a conventional line monitoring circuit.
rj4Fi is a relay that disconnects relay RLC when activated (hereinafter referred to as relay 11).
Lb is layer, relay for caller (hereinafter, relay kL1.
a, RLb), RLcda J-ray target relay (hereinafter, '
Relay RLC), llc is relay RLCvIIk point.
Ｒ，乃至Ｒ，ｔ；を抵抗、Ｄ、乃至ＤｓＢダイオード、
Ｃはコンデンサ、７は出力端子で６る・
まず、システムの１ＩＲＩＩＩをｌ！明する。R, to R,t; are resistors, D, to DsB diodes,
C is a capacitor, and 7 is an output terminal. First, set 1IRIII of the system to l! I will clarify.
発信加入者１がオフフックすると、加入者線をｄて起動
信号が交換機ｆＡＫ送られ、交換機２は起動する。そし
て、発信加入者五からのダイヤル繰作によシ、選択信号
が交１１１１に２に送られ、交換機２がこれを受信解析
して、交換機５へのｌｌｌ１Ｉｔ−選択する◎父換慎２
は、選択し九ｌ＆Ｉ１ｍＩを通して、交ｇ＆愼５へ起ｒ
ｔｎ＜ｇ号を送る。これにより、リレーｒｉｍど
筐九、リレーｒｊ４はｖ−に切シ変わる０そして、リレ
ーＲＬａ及びＲＬｂが動作して、着信加入者６を呼び出
す。これにより、着信加入者６がオフフックするとリレ
ーｒ１１及びｒｌ、が動作し、交換機２内の出トランク
０Ｇ７Ｆに信号を送る。これにより、発信加入者１と着
信加入者６との間で通話が可能となる。また、このとき
、音声信号は、送信側信号変換装置３及び着信側信号変
換装置４でディジタル化され、ディジタル伝送路りを介
して送受されている。When the originating subscriber 1 goes off-hook, an activation signal is sent to the exchange fAK through the subscriber line d, and the exchange 2 is activated. Then, as a result of dialing from calling subscriber 5, a selection signal is sent to exchange 1111 to exchange 2, exchange 2 receives and analyzes this, and selects lll1It- to exchange 5.
Select 9l & I1mI and go to 5 & 5.
Send tn<g. As a result, relay rim and relay rj4 switch to v-0, and relays RLa and RLb operate to call the called subscriber 6. As a result, when the called subscriber 6 goes off-hook, relays r11 and rl operate, and a signal is sent to the outgoing trunk 0G7F in the exchange 2. This enables a telephone call between the originating subscriber 1 and the terminating subscriber 6. Further, at this time, the audio signal is digitized by the transmitting side signal converting device 3 and the receiving side signal converting device 4, and is sent and received via the digital transmission path.
その後、通話が終了し、着信加入者６がオンフ、りする
と、リレーｒ１１及びｒＪｌが第２図に示す状態に復旧
する。そして、発信加入者１がオンフックすると、リレ
ーｒｌｍ及び１７番は第２図に示す状態に復旧して、無
通話状態となる。Thereafter, when the call ends and the called subscriber 6 turns off, the relays r11 and rJl are restored to the state shown in FIG. Then, when calling subscriber 1 goes on-hook, relays rlm and 17 are restored to the state shown in FIG. 2, and are in a no-call state.
このようなシステムにおいては、着信［４１１号変換装
置と交換機５の入トランクＩＣＴとを結ぶＣ線及びｄ線
を監視を行う必要がわる。すなわち°、発信加入者１か
らの起動があ゛つた場合、Ｃ−及びｄ線に異常（Ｃ線、
ｄ線間の短絡、Ｃ線又は（Ｉねの断線、Ｃ線及びｄ線の
異常電位）があると、着信加入者６との通話ができない
ためである。このため、Ｎ信側信号変換装置内に設けら
れている従来の回線監視回路では、第２図に示すように
、リレーＲＬｃを回線監視用として用いていた。すなわ
ち、無通話状態において、Ｃ線及びｄ線に異常があると
、リレーＲＬｃが動作し、接点ｒｊｃが閉じて、発信側
の出トランクＯＣＴに閉基信号を送って回線を強制的に
復旧させる。In such a system, it is necessary to monitor the C and D lines that connect the incoming call number 411 converter and the incoming trunk ICT of the exchange 5. In other words, if there is an activation from calling subscriber 1, there will be an abnormality in the C- and d lines (C line,
This is because if there is a short circuit between the D line, the C line or (I line disconnection, abnormal potential of the C line and the d line), it will not be possible to communicate with the called subscriber 6. For this reason, in the conventional line monitoring circuit provided in the N signal converter, a relay RLc is used for line monitoring as shown in FIG. That is, when there is no call and there is an abnormality in the C line and d line, relay RLc operates, contact rjc closes, and a close signal is sent to the outgoing trunk OCT on the calling side to forcibly restore the line. .
しかしながら、かかる従来の回線監視回路では、以下の
欠点が生じる。すなわち、リレーは一般特性として、動
作時と復旧時の電流ヒステリシス特性及び内部抵抗が小
さいために、着信者の復旧時にリレーが復旧できなくな
るため、起動の前後にリレーをオン、オフさせる別のリ
レーとその操作回路を設けているので、回路構成が大き
いという欠点があった。また、従来の回線監視回路は電
流構出のために、無通話時（発信加入者からの起動もな
い状態）しか回線の監視ができなかった。However, such conventional line monitoring circuits have the following drawbacks. In other words, as general characteristics of relays, the current hysteresis characteristics and internal resistance during operation and recovery are small, so the relay cannot recover when the called party recovers, so another relay is used to turn the relay on and off before and after activation. and its operating circuit, so it had the disadvantage that the circuit configuration was large. Furthermore, because of the current draw, conventional line monitoring circuits could only monitor the line when there was no call (when there was no activation from the originating subscriber).
（４） 発明の目的
本発明は、かかる従来の欠点を除去する如く、回路幅電
子化して回路構成を小型化することを目的とする。(4) Purpose of the Invention The object of the present invention is to reduce the size of the circuit configuration by digitizing the circuit width so as to eliminate such conventional drawbacks.
（５）発明の構成
着信側の搬送端局装置と交換機内の入トランクを結ぶ２
線式中継腺の状態を監視する回線監視回路において、正
側端子に該２１ｓ式中継線の一方の中継線の電位を分圧
した電位を入力し、負側端子に該２線式中継線の他方の
中継線の電位を分圧した電位を大願して、該正側端子に
加わる電位と該負側端子に加わる電位を比較し、該２１
ｓ式中継線の異常時に所定レベルの電圧を出力する比較
出力手段及び該２ｉ１！式中継ｉＫ異常があったとき、
該正側端子及び該負側端子に加わる電位の関係が反転す
るように設定する手段は、該比較出力手段の手刀が反転
したとき、該２ｍ式中継緑に異常があることを検出する
ことを特徴とするものである。(5) Configuration of the invention Connecting the carrier terminal equipment on the receiving side and the incoming trunk in the exchange 2
In a line monitoring circuit that monitors the state of a wire relay gland, a potential obtained by dividing the potential of one of the 21S relay wires is input to the positive terminal, and a voltage of the two-wire relay wire is input to the negative terminal. Applying a potential obtained by dividing the potential of the other relay line, compare the potential applied to the positive side terminal and the potential applied to the negative side terminal, and
A comparison output means for outputting a voltage at a predetermined level when an S-type trunk line is abnormal, and the 2i1! When there is a relay iK error,
The means for setting the relationship between the potentials applied to the positive side terminal and the negative side terminal to be reversed detects that there is an abnormality in the 2m relay green when the hand of the comparison output means is reversed. This is a characteristic feature.
（６） 発明の実施例
第３図を用いて本発明の回線監視回路の一実施例を詳説
する・
第３図は、本発明の回線監視回路の構成例を示す図であ
る。図において、第１図及び第２図と同一の１１１号及
び符号を付したものは、同一のものを示し、Ｒ４乃至Ｒ
ｏ。は抵抗、ｃｌ及びＣ３はコンデンサ、ｚＤＩ及びｚ
Ｄ、は定電圧ダイオード、Ｄ４及びり、 Ｈダイオード
、ｒｌ、はリレー、８Ｆ！オペアンプである。また、こ
こでの抵抗の分圧比は例えば、Ｒ＆：Ｒｓキ１＝２、Ｒ
，：Ｒ，中１：２．５である。(6) Embodiment of the Invention An embodiment of the line monitoring circuit of the present invention will be explained in detail with reference to FIG. 3. FIG. 3 is a diagram showing an example of the configuration of the line monitoring circuit of the present invention. In the figures, the same numbers 111 and numerals as in Figures 1 and 2 indicate the same things, and R4 to R
o. is a resistor, cl and C3 are capacitors, zDI and z
D, is a constant voltage diode, D4 and H diode, rl is a relay, 8F! It is an operational amplifier. Also, the voltage division ratio of the resistors here is, for example, R&:Rski1=2, R
, :R, medium 1:2.5.
塘ず発信側加入者からの起動がなく無通話状態となり゛
でいる場合を説明する。Ｃ線及びｄ線が正常であるなら
ば、ｃｌｌの電圧は、抵抗Ｒ４とＲ・で分圧してオペア
ンプ８の（＋）端子に入力し、マタ、ｄｄの電圧は、抵
抗Ｒ１とＲ１で分圧してオペアンプ８の（ハ）端子に入
力される。このときのオペアンプ８の出力は、低レベル
となる。次に、Ｃ線又は、ｄｉのいずれか一方が切断に
なったとすると、ｄ線の電位は、−ｖ４に引ぼられる。A case will be explained in which there is no activation from the calling subscriber and the call remains in a no-call state. If the C line and d line are normal, the voltage of cll is divided by resistors R4 and R and input to the (+) terminal of operational amplifier 8, and the voltage of master and dd is divided by resistors R1 and R1. The signal is input to the (c) terminal of the operational amplifier 8. The output of the operational amplifier 8 at this time becomes a low level. Next, if either the C line or di is disconnected, the potential of the d line is pulled to -v4.
このため、オ？ ペアンプ８の（ト）端子に入力
する電圧が高くなり、オペアンプ８の出力に、高レベル
となって、出力端子７に出力され、ＴＴＬレベルに変換
される。For this reason, O? The voltage input to the (G) terminal of the operational amplifier 8 becomes high, and the output of the operational amplifier 8 becomes a high level, which is output to the output terminal 7 and converted to the TTL level.
そして、送信側の出トツンクＯＧＴＫＭ！１信号が送ら
れ、回線を強制的に復旧させる。また、Ｃ線−ｄ＠間が
短絡した場合にも、オペアンプ８０日端子に加わる電圧
は、−■４に引っばられているため、オペアンプ８の（
−１−）ｙ８子に加わる電圧の方が筒〈なり、オペアン
プ８の出力は高レベルとなる。And the sending side's output OGTKM! 1 signal is sent and the line is forcibly restored. Also, even if there is a short circuit between the C line and d@, the voltage applied to the operational amplifier 80-day terminal is pulled to -■4, so the operational amplifier 8 (
-1-) The voltage applied to the y8 element becomes a cylinder, and the output of the operational amplifier 8 becomes a high level.
Ｃ線及びｄ線の電圧が低電圧となった場合には、ツェナ
ーダイオードＺＤ、の電圧ｖｚ、とＺＤ、の電圧ＶＺ、
の関係がＶｚｌ＞Ｖｚｌとなりているため、この場合も
、オペアンプ８の出力は高レベルとなる。また％ ｃｋ
、及びｄｉｌｌＩｆ）電圧が高電圧となった場合には、
ツェナーダイオードＺＤ、及びＺＤ、でそれぞれクラン
プされるが、ツェナーダイオードｚＤ１とＺＤ、の電圧
関係から、オペアンプ８の任）端子に入力する電圧が高
くな夛、オペアンプ８の出力は高レベルとなる。When the voltages of the C line and the d line become low voltages, the voltage VZ of Zener diode ZD, and the voltage VZ of ZD,
Since the relationship is Vzl>Vzl, the output of the operational amplifier 8 is at a high level in this case as well. Also %ck
, and dillIf) becomes a high voltage,
Although it is clamped by the Zener diodes ZD and ZD, the output of the operational amplifier 8 becomes high level because the voltage input to the terminal of the operational amplifier 8 is high due to the voltage relationship between the Zener diodes ZD1 and ZD.
すなわち、無通話状態において、Ｃ線及びｄｇＩに異常
があると、オペアンプ８の出力は常に高レベルとなり、
送信側の出トランク０ＧＴＫ閉塞信号を送って、回線を
強制的に復旧させる〇無通話状態から発信加入者からの
起動があると、リレーｒｌ−ｔＦｉ閉じる。これにより
、リレーＲＬａ及びＲＬｂが動作して、着Ｏｔ四加入者
を呼出す。この時点まで、上記の（ロ）＃＃Ｍ視を行う
ことができる。In other words, in a no-call state, if there is an abnormality in the C line and dgI, the output of the operational amplifier 8 will always be at a high level,
Send an outgoing trunk 0GTK blockage signal from the sending side to forcibly restore the line. When activated by the originating subscriber from a no-call state, relay rl-tFi closes. This causes relays RLa and RLb to operate and call the terminating Ot4 subscriber. Up to this point, the above (b) ##M view can be performed.
そして、ｊ１１１偵愉加入省が応答するとリレーｒｊｒ
及びｒｌ、が動作し、送信側交換機内の出トランクに
・応答信号を込出し、通話が始まる。その後通話が終
了すると、リレーｒＪＩ及びｒ７１が（Ｊ！佃する。ま
た、発信者加入者のオンフックにより、リレーｒｌｖが
頭重して、無通話状−となる。この通話終了時から、叫
びと述の回−〇監視を行う。Then, when the J111 Reconnaissance Ministry responds, the relay rjr
and rl are activated and the outgoing trunk in the sending exchange
- A response signal is sent and the call begins. After that, when the call ends, relays rJI and r71 are activated (J! Time - 〇 Monitoring is carried out.
すなわち、＋：発ＦＪ８Ｆｉ、通話時以外の一合は、す
べて、同−監視を行りていることになる。That is, the +: originating from FJ8Fi is monitored in all cases other than during a call.
′１九、本発明の他の実施例として、電源Ｖのプラス、
マイナスを逆にした場合には、−■４を十Ｍとすること
により、上記の監視を同ψように行うことができる。'19. As another embodiment of the present invention, the plus of the power supply V,
If the negative value is reversed, the above monitoring can be performed in the same way by setting -■4 to 10M.
Ｉ’ｌｌ 発明σ）効果
以上、叶欧したように１本発明の回線監視回路によれば
、・観圧横出とし、１線値視回路の入力抵抗を高くした
ため、従来のように１起動ＫＺじて回線監視用リレーを
回線から切り離すリレーを必要とせず、また、回路の電
子化によって、回路を小型化できるため、コストダウン
につながるという効果が得られる。According to the line monitoring circuit of the present invention, the line monitoring circuit of the present invention has the following advantages: ・The line monitoring circuit of the present invention has a horizontal output and the input resistance of the 1 line value monitoring circuit has been increased, so that it can not be activated once as in the conventional case. KZ does not require a relay to separate the line monitoring relay from the line, and the electronic circuit allows the circuit to be made smaller, resulting in cost reduction.
第１図はシステムの概要図、鮪２図は従来の回線監視回
路の構成例を示す図、第３図は本発明の回線監視回路の
構成例を示す図である。
図中、１は発信側加入者、２は発信側交換機、３Ｖｉ発
信側信号信号変換装置、４は受信匈変換装置、５は着信
匈交換機、６Ｆｉ着信側加入者、７Ｆｉ出力端子、８゛
はオペアンプ、０ＧＴＦｉ出トランク、ＩＣＴｉ１人ト
ランクである・FIG. 1 is a schematic diagram of the system, FIG. 2 is a diagram showing an example of the configuration of a conventional line monitoring circuit, and FIG. 3 is a diagram showing an example of the configuration of the line monitoring circuit of the present invention. In the figure, 1 is the originating subscriber, 2 is the originating exchange, 3Vi is the originating signal converter, 4 is the receiving converter, 5 is the terminating exchange, 6Fi is the terminating subscriber, 7Fi is the output terminal, and 8 is Operational amplifier, 0 GTFi output trunk, ICTi single trunk.
Claims (1)
？ａ式中継線の状態を監視する回線監視回路において、
正側端子に＃２１１式中継線の一方の中継−の電位を分
圧した電位を入力し、負側端子に該２輪式中継線の他方
の中継線の電位を分圧した電位を入力して、該正側端子
に加わる電位と咳貝９）ｕ端子に加わる電位を比較し、
該２線式中継線の巣常時に所定レベルの電圧を出力する
比較出力手段及び該２鞠式中継線に異常があったとき、
該正１１Ｊｍ子及び該負側端子に加わる電位の関係が反
転す６ように設定する手段を設け、該比較出力手段の出
力が反転したとき、皺２線式中継ＭＡＫ異常かめること
を検出することを特徴とする回線監視Ｎ路。Connecting the carrier terminal equipment on the receiving side and the incoming trunk in the exchange 2
? In the line monitoring circuit that monitors the status of the A-type trunk line,
Input the potential obtained by dividing the potential of one relay of the #211 type relay wire into the positive terminal, and input the potential obtained by dividing the potential of the other relay wire of the two-wheel type relay wire into the negative terminal. 9) Compare the potential applied to the positive side terminal and the potential applied to the u terminal,
When there is an abnormality in the comparison output means that always outputs a voltage at a predetermined level of the two-wire relay line and the two-wire relay line,
A means is provided for setting the relationship between the potentials applied to the positive 11Jm terminal and the negative terminal to be reversed, and when the output of the comparison output means is reversed, it is detected that the wrinkled two-wire relay MAK is abnormally caught. Line monitoring N-ro featuring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP442882A JPS58121859A (en) | 1982-01-14 | 1982-01-14 | Line monitor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP442882A JPS58121859A (en) | 1982-01-14 | 1982-01-14 | Line monitor circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58121859A true JPS58121859A (en) | 1983-07-20 |
Family
ID=11583974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP442882A Pending JPS58121859A (en) | 1982-01-14 | 1982-01-14 | Line monitor circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58121859A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61218256A (en) * | 1985-03-25 | 1986-09-27 | Fujitsu Ltd | Outgoing trunk supervisory system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123160A (en) * | 1980-03-04 | 1981-09-28 | Nec Corp | Trunk line channel fault monitoring system |
-
1982
- 1982-01-14 JP JP442882A patent/JPS58121859A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123160A (en) * | 1980-03-04 | 1981-09-28 | Nec Corp | Trunk line channel fault monitoring system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61218256A (en) * | 1985-03-25 | 1986-09-27 | Fujitsu Ltd | Outgoing trunk supervisory system |
| JPH0441860B2 (en) * | 1985-03-25 | 1992-07-09 | Fujitsu Ltd |
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