JPS6378652A - Analog subscriber circuit of four-wire system - Google Patents
Analog subscriber circuit of four-wire systemInfo
- Publication number
- JPS6378652A JPS6378652A JP22180686A JP22180686A JPS6378652A JP S6378652 A JPS6378652 A JP S6378652A JP 22180686 A JP22180686 A JP 22180686A JP 22180686 A JP22180686 A JP 22180686A JP S6378652 A JPS6378652 A JP S6378652A
- Authority
- JP
- Japan
- Prior art keywords
- subscriber
- circuit
- line
- subscriber terminal
- terminal equipment
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、共通制御式電話交換システムにおける4線式
アナログ加入者回路に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a four-wire analog subscriber circuit in a commonly controlled telephone switching system.
2線式アナログ加入者回路と接続され、かつ該加入者回
路より動作用電源を供給されている加入者端末装置にお
いては、該加入者端末装置に発信の機能を付与している
場合、発信、通話時には通話線に直流電流供給(通話電
流供給)が必要であり、該通話線より該加入者端末装置
へ該加入者端末装置の動作用電源を送ることはできず、
該通話線とは別の電源供給線を設けなければならない。In a subscriber terminal device that is connected to a two-wire analog subscriber circuit and is supplied with operating power from the subscriber circuit, if the subscriber terminal device is provided with a calling function, During a call, a direct current supply (talking current supply) is required to the telephone line, and power for operation of the subscriber terminal cannot be sent from the telephone line to the subscriber terminal.
A power supply line separate from the communication line must be provided.
ただし、該加入者端末装置が着信のみの機能しか付与さ
れていない場合は、該通話線を使用しての該加入者端末
装置の動作用電源の供給は可能である。これは特開昭5
5−124354号「端末接続方式」に該轟する技術で
ある。However, if the subscriber terminal device is only provided with the function of receiving calls, it is possible to supply power for operating the subscriber terminal device using the telephone line. This is Tokukai Showa 5
This technology is applicable to No. 5-124354 "Terminal connection method".
上記従来技術は、通話線以外に加入者端末装置への電源
供給線が必要であり、この電源供給線に付随する諸設備
、施設工数が多大となるという問題点に配慮がされてい
ない。上記従来技術が4Ns式アナログ加入者回路に適
用された場合、同様の問題点が残る。The above-mentioned conventional technology does not take into consideration the problem that a power supply line to the subscriber terminal device is required in addition to the telephone line, and that the various equipment and facility man-hours associated with this power supply line are large. When the above-mentioned prior art is applied to a 4Ns type analog subscriber circuit, similar problems remain.
本発明の目的は、電源供給線を設けたために生じる上記
問題点を4線式アナログ加入者回路について解消するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems caused by the provision of a power supply line in a four-wire analog subscriber circuit.
上記目的は、通話時に通話電流を必要としない4線式ア
ナログ加入者回路の送話線を、加入者端末装置の動作用
電源の電源供給線として使用することにより、該通話線
以外の電源供給線を設ける必要がなくなり、上記目的は
達成される。The above purpose is to use the transmission line of a 4-wire analog subscriber circuit, which does not require communication current during a call, as a power supply line for the operating power supply of the subscriber terminal equipment, thereby supplying power to lines other than the communication line. There is no need to provide a line, and the above objective is achieved.
4線式アナログ加入者回路の送話線は、該送話線より加
入者端末装置への音声f音声帯域内の交流信号を支障な
く送用できれば、該加入者端末装置への電源供給線とし
ても使用できる。The transmission line of a 4-wire analog subscriber circuit can be used as a power supply line to the subscriber terminal device if an AC signal in the audio band can be transmitted from the transmission line to the subscriber terminal device without any hindrance. can also be used.
これは、該4線式アナログ加入者回路の送話線に接続さ
れる加入者端末装置の動作用電源の電源供給回路を、該
送話線を通る該交流信号に対して高インピーダンスにし
、該送話線での該電源供給回路による該交流信号の損失
を十分に小さくすることにより実現できる。This makes the power supply circuit of the operating power supply of the subscriber terminal device connected to the transmission line of the 4-wire analog subscriber circuit high impedance with respect to the AC signal passing through the transmission line. This can be realized by sufficiently reducing the loss of the AC signal caused by the power supply circuit in the transmission line.
以下、本発明の一実施例を第1因により説明する0第1
図の4線式アナログ加入者回路(SUBT)1は、時分
割交換機に収容される加入者回路で、制御回路(CTL
)2は、図示されてないトランクインターフェース回路
(T I C、)より該加入者回路(SUBT)10制
御情報を受信し、該加入者回路(SUBT)1の制御を
行なう。また、該加入者回M(SUBT) 1かもト
ランクインターフェース回路(TIC)への情報の受は
渡しを行なう。コーデック(CODEC) 3は、制御
回路(CTL)2の制御により、音声帯域内の交流信号
をアナログからデジタルへ、またデジタルからアナログ
への変換を行なう。レベル調整回路(LVC)4は、コ
ーデック(CODEC)sのアナログ人出方信号のレベ
ル調整を行なう。トランス(LO,Ll ) 5.6は
、平衡、不平衡の変換回路、コンデンサ(Co、 CI
) 7.8は、直流阻止用コンデンサ、加入者インタ
ーフェース回路(SLIC)9 は、加入者端末装置(
置)13から°の発呼(応答)又は切断(終話〕の検出
、さらに、加入者端末装置(置)1. の送話回路(
TRY)14 へ送話電流の供給を行なう。端末電源
供給回路(PWS)15は、加入者端末装置(置)13
の動作用電源を、該加入者端末gj:隨(置)13の電
源回路(POW)16へ供給する。加入者端末装ft
(置) 13 F)受話口u (RCV) 15 ハ、
4線式アナログ加入者回路(SUBT) 1 からの送
信信号の受信を行なう。塞流線輪(RPOlRPl)1
1.12は、加入者インターフェース回路(SLIC)
9や端末電源供給回路(PWS)10が、4@式アナロ
グ加入者回路(SUBT)1のD%E線及びA、B線を
通る音声帯域内の交流信号に対して高インピーダンスと
なるようにしている。Hereinafter, one embodiment of the present invention will be explained based on the first factor.
The 4-wire analog subscriber circuit (SUBT) 1 in the figure is a subscriber circuit accommodated in a time division exchange.
) 2 receives control information for the subscriber circuit (SUBT) 10 from a trunk interface circuit (TIC, ) not shown, and controls the subscriber circuit (SUBT) 1. The subscriber line M (SUBT) 1 also receives and passes information to the trunk interface circuit (TIC). The codec (CODEC) 3 converts the AC signal within the audio band from analog to digital and from digital to analog under the control of the control circuit (CTL) 2. A level adjustment circuit (LVC) 4 adjusts the level of the analog occupancy signal of the codec (CODEC) s. Transformer (LO, Ll) 5.6 is a balanced/unbalanced conversion circuit, capacitor (Co, CI
) 7.8 is a DC blocking capacitor, subscriber interface circuit (SLIC) 9 is a subscriber terminal equipment (
Detection of call origination (response) or disconnection (end of call) from 13 to 13;
TRY) 14 is supplied with a transmitting current. The terminal power supply circuit (PWS) 15 is connected to the subscriber terminal device (place) 13.
The operating power is supplied to the power supply circuit (POW) 16 of the subscriber terminal gj: 13. Subscriber terminal equipment ft
(Position) 13 F) Earpiece u (RCV) 15 C.
It receives transmission signals from a 4-wire analog subscriber circuit (SUBT) 1. Blockage line (RPOlRPl) 1
1.12 Subscriber Interface Circuit (SLIC)
9 and the terminal power supply circuit (PWS) 10 have a high impedance to AC signals in the voice band passing through the D%E line and the A and B lines of the 4@ type analog subscriber circuit (SUBT) 1. ing.
以下に加入者端末装#(置、)1s からの発信動作
を例K、動作の説明をする。Below, an explanation will be given of an example K of the calling operation from the subscriber terminal #(device) 1s.
加入者端末装@ (T、WL、 )は、加入者線路(8
UBLン171Cより接続されている4線式アナログ加
入者回路(SUBT) 1 の送話線(A、B嶽)より
常時、加入者端末装置(TEi、)15 自身の動作
用電源の供給を受けている。The subscriber terminal equipment @ (T, WL, ) is the subscriber line (8
The subscriber terminal equipment (TEi,) 15 receives power supply for its own operation at all times from the transmission lines (A, B) of the 4-wire analog subscriber circuit (SUBT) 1 connected to the UBL line 171C. ing.
加入者端末装@(置)13 にて発信の操作を行なうと
、該加入者端末装置(TEh)13 の送話口路(T
R8)14 に直流ループが形成され、4線式アナロ
グ加入者回路(SUBT)1 の加入者インター 7
ニー ス回路(SLIC)9 にて発信が検出され
る。発信の情報は、制御回路(CTL)2経由でトラン
クインターフェース回路(TIC)へ送られて発信時の
処理が行なわれ、その結果、発信音が制御回路(CTL
)2のHWRI7−ドに送られて来て、コ−7” y
9 (C0DEC) 3、レヘ#i整Oo路(LVC)
4、) ランス(Ll ) 6 ヲh ’) 、 加入
者11j路C3UBL)17を通って該加入者端末装置
t(置)13 の受信回路(几Cv)15 へ送られる
。該発信音の送信レベルは、塞流線輪(RPI)12
により、4線式アナログ加入者回路(80BT)1
の端末電源供給回路(PWS)1o の影響による
減衰を殆んど受けない。When a call operation is performed on the subscriber terminal (TEh) 13, the mouthpiece (T) of the subscriber terminal (TEh) 13 is activated.
A DC loop is formed in R8) 14, and the subscriber interface 7 of the 4-wire analog subscriber circuit (SUBT) 1 is formed.
Transmission is detected in the nice circuit (SLIC) 9. The outgoing call information is sent to the trunk interface circuit (TIC) via the control circuit (CTL) 2 and processed at the time of outgoing call.
) 2 HWRI 7- code, code 7” y
9 (C0DEC) 3, Rehe #i Sei Oo Road (LVC)
4), and is sent to the receiving circuit (Cv) 15 of the subscriber terminal device t (location) 13 through the subscriber 11j route C3UBL) 17. The transmission level of the tone is 12
4-wire analog subscriber circuit (80BT) 1
It is hardly attenuated by the influence of the terminal power supply circuit (PWS) 1o.
このように実施例によれば、4線式アナログ方口大者回
路と接続され、かつ該41M式アナログ加入者回路より
動作用電源を供給されている加入者端末装置への電源併
給を、該4線式アナログ加入者回路の送話線を利用して
行なうことができるという効果がある。As described above, according to the embodiment, power is supplied simultaneously to the subscriber terminal device connected to the 4-wire analog subscriber circuit and supplied with operating power from the 41M analog subscriber circuit. This has the advantage that it can be carried out using the transmission line of a four-wire analog subscriber circuit.
本発明によれば、4線式アナログ加入者回路と接続され
、かつ該4線式アナログ加入者回路より動作用電源を供
給されている加入者端末装置への電源供給を、該装置間
の通話線を利用して行なうことができ、電源供給のため
の専用線を設ける必要がなくなるという効果がある。According to the present invention, power supply to subscriber terminal devices connected to a 4-wire analog subscriber circuit and supplied with operating power from the 4-wire analog subscriber circuit is controlled by communication between the devices. This can be done using a power line, which has the effect of eliminating the need to provide a dedicated line for power supply.
第1(2)は、本発明に係る4線式アナログ加入者回路
の一実施例を示す構成図及び該4巌式アナログ加入者回
路と接続される加入者端末装置の構成図である。
2・・・制御回路、6・・・コーデック、4・・・レベ
ル調整回路、7.8・・・直流阻止コンデンサ、10・
・・端末電源供給回路、11.12・・・塞流線輪、1
3・・・m入省端末装置、14・・・送話回路、15・
・・受話回路、16・・・電源回路、17・・・加入者
線路。Part 1 (2) is a configuration diagram showing an embodiment of a four-wire analog subscriber circuit according to the present invention, and a configuration diagram of a subscriber terminal device connected to the four-wire analog subscriber circuit. 2... Control circuit, 6... Codec, 4... Level adjustment circuit, 7.8... DC blocking capacitor, 10...
... Terminal power supply circuit, 11.12 ... Blockage line, 1
3...M input terminal device, 14...Talking circuit, 15.
... Receiving circuit, 16... Power supply circuit, 17... Subscriber line.
Claims (1)
入者回路より電源供給を受けて動作する加入者端末装置
において、通話電流を必要としない該加入者回路の送話
線を介して該加入者回路と接続されている該加入者端末
装置へ、通話線以外の電源供給のための専用線を設ける
ことなく該加入者端末装置の動作用電源を供給できるよ
うにしたことを特徴とする4線式アナログ加入者回路。1. In an analog subscriber circuit with a 4-wire telephone line and a subscriber terminal device that operates by receiving power from the subscriber circuit, the transmission line of the subscriber circuit that does not require telephone current is used. A power supply for operating the subscriber terminal device connected to the subscriber circuit can be supplied to the subscriber terminal device without providing a dedicated line for power supply other than a telephone line. 4-wire analog subscriber circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22180686A JPS6378652A (en) | 1986-09-22 | 1986-09-22 | Analog subscriber circuit of four-wire system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22180686A JPS6378652A (en) | 1986-09-22 | 1986-09-22 | Analog subscriber circuit of four-wire system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6378652A true JPS6378652A (en) | 1988-04-08 |
Family
ID=16772489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22180686A Pending JPS6378652A (en) | 1986-09-22 | 1986-09-22 | Analog subscriber circuit of four-wire system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6378652A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007284906A (en) * | 2006-04-13 | 2007-11-01 | Ksk:Kk | Concrete pumper equipped with pipe for feeding freshly mixed concrete |
-
1986
- 1986-09-22 JP JP22180686A patent/JPS6378652A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007284906A (en) * | 2006-04-13 | 2007-11-01 | Ksk:Kk | Concrete pumper equipped with pipe for feeding freshly mixed concrete |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS59169296A (en) | Key telephone transmission system | |
US4727578A (en) | Telephone system | |
JPS6074753A (en) | Hand-free circuit for telephone set | |
US6137189A (en) | Line circuit apparatus for supplying power to a telephone set in telecommunication systems | |
JPS6378652A (en) | Analog subscriber circuit of four-wire system | |
FR2452842A1 (en) | Telephone terminal including calculators - combines both functions of normal subscriber telephone and an information transmission terminal | |
US4410982A (en) | Arrangement for extending digital signaling to telephone subscribers' substations | |
US4660219A (en) | Extension ringing arrangement key telephone system | |
JPS6042970A (en) | Telephone set for private branch of exchange | |
JPS6230546B2 (en) | ||
JP2919323B2 (en) | Leased line transmission method | |
JP3048381B2 (en) | Command communication device | |
JPH01288145A (en) | Howling prevention system at loudspeaker talking end | |
JPH01120985A (en) | Subscriber circuit | |
HUT64165A (en) | Circuit arrangement for telephone sets | |
JPH027694A (en) | Telephone system | |
KR19980073728A (en) | Exchange system with line break check | |
JPS63185257A (en) | Wire terminal connecting equipment | |
JPS60183895A (en) | Wire broadcasting telephone exchange | |
JPH03106195A (en) | Repeater for telephone system | |
JPH0662168A (en) | Facsimile equipment | |
JPS61257056A (en) | Door phone speaking circuit for key telephone system | |
JPS60247394A (en) | Subscriber's circuit | |
JPH0359633B2 (en) | ||
JPS63232736A (en) | Interface circuit for telephone system |