JPH03280746A - Inter-terminal communication system - Google Patents
Inter-terminal communication systemInfo
- Publication number
- JPH03280746A JPH03280746A JP8263990A JP8263990A JPH03280746A JP H03280746 A JPH03280746 A JP H03280746A JP 8263990 A JP8263990 A JP 8263990A JP 8263990 A JP8263990 A JP 8263990A JP H03280746 A JPH03280746 A JP H03280746A
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- circuit
- frequency band
- switch circuit
- filter
- 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.)
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- 238000004804 winding Methods 0.000 claims description 5
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はＣＣＩＴＴ勧告Ｉ ４３０バスインタフエ、−
ス（ＣＣＩＴＴ、ＲＥＤ ＢＯＯＫ、ν０１１、ＩＮＩ
−Ｆａｓｃｉｃｌｅ ｌｌｌ５参照）により接続さハ、
る端末装置間で直接通信を行う端末間通信方式に関する
６
〔従来の技術〕
従来のＩ．４３０バスインタフ工・−スによる接続形態
では、端末装置間の通信は−ｌ網の交換機を介して行わ
れる。すなわち、送信端末からの送信データは同勧告に
示されているＮＴＩ（加入者線終端装置）を介し、更に
加入者ケーブルを介１−ｌ：後、局に設置された文制御
６：より交換されノ１、−後、再び加入者ケーブルを槍
してＮ Ｔ１装賃を通過しＩ．４３０バスインタフト−
・スを介して相手端末に到達する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is based on the CCITT Recommendation I 430 bus interface, -
(CCITT, RED BOOK, ν011, INI
- Connected by Fascicle llll5),
6. Related to an inter-terminal communication method for direct communication between terminal devices [Prior art] Conventional I. In the connection form using the 430 bus interface, communication between terminal devices is performed via the switch of the 430 bus interface. In other words, the data transmitted from the transmitting terminal is transmitted via the NTI (subscriber line terminal equipment) shown in the same recommendation, and then via the subscriber cable (1-1), and then exchanged by the station control unit (6) installed at the station. After that, the subscriber cable was passed through the NT1 charger again and the I. 430 bus interface
- Reach the other party's terminal via the
しかしながら、これによると同一バスケーブルに接続さ
れている端末装置間の通信を行うに際し、Ｎ′Ｔ’ｌ装
百、加入者ケーブル及び交換機等の網のリソースを使用
する為、各リソースの使用効率を低干さぜる問題がある
、
〔課題を解決するための千「９〕
本発明の端末間通信方式はＣＣＩＴ”Ｔ勧告■。However, according to this method, when communicating between terminal devices connected to the same bus cable, network resources such as N'T'l equipment, subscriber cables, and switching equipment are used, so the efficiency of use of each resource is There is a problem that the terminal communication method of the present invention is based on the CCIT'T Recommendation■.
４３０バスインタフェースにより接続さｉ］−でいる第
一及び第二の端末装置を備え、前記第一の端末％置の送
信用第一変成器及び受信用第二変成器のケーブル側の巻
線の各中点に第三変成器を接続Ｉ〜、この第三変成器の
二次側に第一スイッチ回路を接続し、この第一スイッチ
回路にはスイッチ切り替えにより第一送信回路が接続さ
れる場合と第一受信回路が接続される場合どがあり、前
記第一・スイッチ回路が前記第一送信回路に接続される
場合には前記第一送信回路より送信データが送出され、
前記第一スイッチ回路が前記第一受信回路に接続される
場合には前記第一受信回路により信号が受信され；前記
第二の端末装置の送信用第一変成器ルび受信用第二変成
器のケーブル側の巻線の各中点に第四変成器を接続ｌ〜
、この第四変成器の二次側に第二スイッチ回路を接続１
２、この第二スイ・・ｌ子回路にはスイッチ切り替えに
より第二送信回路が接続される場合と第二受信回路が接
続される場合とがあり、前記第二スイップー回路が前記
第送信回路に接続される場合には前記第二送信回路より
送信データが送出され、前記第二スイッチ回路が前記第
二受信回路に接続さオ］−る場合には前記第二受信回路
により信号が受信される構成である。a first and a second terminal device connected by a 430 bus interface; When a third transformer is connected to each midpoint I~, a first switch circuit is connected to the secondary side of this third transformer, and a first transmitting circuit is connected to this first switch circuit by switching. and a first receiving circuit may be connected, and when the first switch circuit is connected to the first transmitting circuit, transmission data is sent from the first transmitting circuit,
When the first switch circuit is connected to the first receiving circuit, a signal is received by the first receiving circuit; a first transformer for transmitting and a second transformer for receiving of the second terminal device; Connect the fourth transformer to each midpoint of the winding on the cable side of l~
, connect the second switch circuit to the secondary side of this fourth transformer 1
2. This second switch circuit may be connected to a second transmitting circuit or a second receiving circuit by switching a switch, and the second switch circuit may be connected to the second transmitting circuit. When connected, the second transmitting circuit sends out transmission data, and when the second switch circuit is connected to the second receiving circuit, the second receiving circuit receives a signal. It is the composition.
また、本発明の端末間通信方式はＣＣＩＴＴ勧告Ｉ．４
３０インタフェースにより接続される第一及び第ニーの
端末装置を倫え；前記第一の端末装置の送信用第二変成
器及び受信用第二変成器のケーブル側の巻線の各中点に
第三変成器を接続；−１この第三変成器の二次側に通過
周波数帯域がｆｌからで２である第−賓Ｐ波器と通過周
波数帯域がｆ３からｆ４ （ｆｌ＜ｆ２＜ｆ３＜ｆ４）
である第二ン戸波器とを接続し、府記第−ろ波器には変
調後の周波数帯域がｆｌからｆ２の間となる第一変調器
が接続され、前記第二ろ波器には使用周波数帯域が１３
とｆ４との間である第一復調器が接続され；前記第＝、
の端末装置の送信用第一変成器及び受信用第二変成器の
ケーブル側の巻線の各中点に第四変成器を接続し、この
第四変成器の二次側に通過周波数帯域がｆｌからｆ２で
ある第三ｉ戸波器と通過周波数帯域がＩ３からＩ４であ
る第四ろ波器とを接続し、前記第三ろ波器には使用周波
数帯域がｆｌとＩ２との間であり前記第一変調器から送
信される変調信号を復調する第二復調器が接続され、前
記第四ろ波器には変調後の周波数帯域がＩ３からＩ４の
間となり前記第一復調器により復調される変調波を送信
する第二変調器が接続される構成である。Furthermore, the terminal-to-terminal communication system of the present invention is based on CCITT Recommendation I. 4
a first and a second terminal device connected by a 30 interface; Connect three transformers; -1 On the secondary side of this third transformer, the pass frequency band is from fl to 2, and the pass frequency band is from f3 to f4 (fl<f2<f3<f4 )
A first modulator whose frequency band after modulation is between fl and f2 is connected to the second filter, and the second filter is connected to the second filter. 13 frequency bands used
A first demodulator is connected between and f4;
A fourth transformer is connected to each midpoint of the windings on the cable side of the first transmitting transformer and the second receiving transformer of the terminal device, and the passing frequency band is on the secondary side of this fourth transformer. A third filter having a pass frequency band from fl to f2 is connected to a fourth filter having a passing frequency band from I3 to I4, and the third filter has a working frequency band between fl and I2. A second demodulator that demodulates the modulated signal transmitted from the first modulator is connected to the fourth filter, and the frequency band after modulation is between I3 and I4 and is demodulated by the first demodulator. In this configuration, a second modulator that transmits a modulated wave is connected.
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.
本発明の第１の実施例を示す第１図を参照すると、１は
加入者線終端装置（ＮＴＩ）内のＣＣＩＴＴ勧告Ｉ．４
３０バスインタフェースによる送信回路、２はＮＴＩ内
の同勧告による受信回路、３は第一の端末装置（ＴＥ−
Ａ）内の同勧告による受信回路、４は第一の端末装置内
の同勧告による送信回路、５は第二の端末装置（ＴＥ−
Ｂ）内の同勧告による受信回路、６は第二の端末装置内
の同勧告による送信回路、７は送信回路、８は受信回路
、９は送信回路、１０は受信回路、１１〜１６は変成器
、１７〜２０は同勧告による終端抵抗器、２Ｉ．２２は
変成器、２３．２４はスイッチ回路である。スイッチ回
路２４を送信回路７に接続した場合、変成器２２を介し
て送信信号がＩ．４３０バスインタフェースの送信用ペ
アケーブルと受信用ベアケーブル間に印加される。送信
信号は変成器２１を介し、更にスイッチ回路２３を経て
受信回路１０に接続され、この受信回路１０により受信
される。この構成により、第一及び第二の端末装置間の
信号の送受信は異なる時間帯で行われるため、上記バス
インタフェース上で第一の端末装置からの送信信号と第
二の端末装置からの送信信号とが衝突することがないた
め、端末装置間での全二重通信が可能となる。更に、端
末装置間通信に使用している信号は上記バスインタフェ
ース上で、送受信用の各ベアケーブスに対して同相信号
として印加されるため、Ｉ．４３０バスインタフェース
に従って行われるＮＴＩと端末装置との間の通信には妨
害は与えない。Referring to FIG. 1, which shows a first embodiment of the present invention, 1 indicates CCITT Recommendation I.1 in a subscriber line terminal (NTI). 4
30 is a transmission circuit using the bus interface, 2 is a receiving circuit based on the same recommendation within NTI, and 3 is the first terminal device (TE-
A) is a receiving circuit according to the same recommendation, 4 is a transmitting circuit according to the same recommendation in the first terminal device, and 5 is a second terminal device (TE-
B) is a receiving circuit according to the same recommendation, 6 is a transmitting circuit in the second terminal device according to the same recommendation, 7 is a transmitting circuit, 8 is a receiving circuit, 9 is a transmitting circuit, 10 is a receiving circuit, 11 to 16 are modified 17 to 20 are terminating resistors according to the same recommendation, 2I. 22 is a transformer, and 23 and 24 are switch circuits. When the switch circuit 24 is connected to the transmitting circuit 7, the transmitting signal is transmitted via the transformer 22 to the I. The voltage is applied between the transmission pair cable and the reception bare cable of the 430 bus interface. The transmission signal is connected to the receiving circuit 10 via the transformer 21 and the switch circuit 23, and is received by the receiving circuit 10. With this configuration, since the transmission and reception of signals between the first and second terminal devices are performed in different time zones, the transmission signal from the first terminal device and the transmission signal from the second terminal device are transmitted on the bus interface. Since there is no collision between the two terminals, full-duplex communication is possible between the terminal devices. Furthermore, since the signals used for communication between terminal devices are applied as in-phase signals to each bare cable for transmission and reception on the bus interface, the I. The communication between the NTI and the terminal equipment according to the X.430 bus interface is not disturbed.
本発明の第２の実施例を示す第２図を参照すると、１は
ＮＴＩ内のＣＣＩＴＴ勧告Ｉ．４３０バスインタフェー
スによる送信回路、２はＮＴＩ内の同勧告による受信回
路、３は第一の端末装置（ＴＥ−Ａ）内の同勧告による
受信回路、４は第一の端末装置内の同勧告による送信回
路、５は第二の端末装置（ＴＥ−Ｂ）内の同勧告による
受信回路、６は第二の端末装置内の同勧告による送信回
路、３１は変調器、３２は復調器、２つは変調器、３０
は復調器、１１〜１６は変成器、１７〜２０は同勧告に
よる終端抵抗器、２Ｉ．２２は変成器、２５から２８は
帯域通過３戸波器（ＢＰＦ）である６変調器３１により
第一の端末装置の送信データが変調され、ＢＰＦ２７を
介し、更に変成器２２を介してＩ．４３０バスインタフ
ェースの送信用ペアケーブルと受信用ベアケーブル間に
印加される。変調された送信信号は変成器２１を介し更
にＢＰＦ２６を介して第二の端末装置内の復調器３０に
より復調される。また、変調器２９により第二の端末装
置の送信データが変調され、ＢＰＦ２５を介し、更に変
成器２１を介してＩ４３０バスインタフェースの送信用
ペアケーブルと、受信用ベアケーブル間に印加される。Referring to FIG. 2, which shows a second embodiment of the present invention, CCITT Recommendation I.1 within the NTI. 430 bus interface, 2 is a receiving circuit in the NTI based on the same recommendation, 3 is a receiving circuit in the first terminal device (TE-A) based on the same recommendation, 4 is a receiving circuit in the first terminal device based on the same recommendation. A transmitting circuit, 5 a receiving circuit according to the same recommendation in the second terminal device (TE-B), 6 a transmitting circuit according to the same recommendation in the second terminal device, 31 a modulator, 32 a demodulator, two is the modulator, 30
is a demodulator, 11 to 16 are transformers, 17 to 20 are terminating resistors according to the same recommendation, and 2I. 22 is a transformer, and 25 to 28 are band-pass three-prong filters (BPFs). Transmission data from the first terminal device is modulated by a six-modulator 31, and transmitted through the BPF 27 and further through the transformer 22 to the I. The voltage is applied between the transmission pair cable and the reception bare cable of the 430 bus interface. The modulated transmission signal is passed through the transformer 21, further through the BPF 26, and is demodulated by the demodulator 30 in the second terminal device. Further, the transmission data of the second terminal device is modulated by the modulator 29, and applied through the BPF 25 and further through the transformer 21 between the transmission pair cable and reception bare cable of the I430 bus interface.
変調された送信信号は変成器２２を介し更にＢＰＦ２８
を介して第一の端末装置内の復調器３２゛により復調さ
れる。ここで、ＢＰＦ２６，２７はｆｌからＩ２の帯域
の信号を通過させ、ＢＰＦ２５，２８はＩ３からＩ４の
帯域の信号を通過させる。また、変調器３１及び復調器
３０は帯域ｆ１かＩ２の変調信号の発生とその復調を行
う変復調器である。また、変調器３１及び復調器３２は
帯域ｆ１からＩ２の変調信号の発生とその復調を行う変
復調器である。また、変調器２９及び復調器３２は帯域
ｆ３からＩ４の変調信号の発生とその復調を行う変復調
器であるにのような構成により、第一及び第二の端末装
置間の通信は異なる周波数帯域で行われ、かつ相互の干
渉は各帯域通過３戸波器により抑圧されるため、端末装
置間での全二重通信が可能となる。更に、端末装置間通
信に使用している信号は上記バスインタフェース上では
、送受信用の各ベアケーブルに対置２ては同相信号とし
て印加されるためＩ．４３０バスインタフェースに従っ
て行われるＮＴＩと端末装置との間の通信には妨害は与
えない。The modulated transmission signal is further passed through the transformer 22 to the BPF 28.
The signal is demodulated by a demodulator 32' in the first terminal device. Here, the BPFs 26 and 27 pass signals in the band fl to I2, and the BPFs 25 and 28 pass signals in the band I3 to I4. Further, the modulator 31 and the demodulator 30 are modulators that generate and demodulate a modulated signal in the band f1 or I2. Further, the modulator 31 and the demodulator 32 are modulators that generate and demodulate modulated signals in bands f1 to I2. Additionally, the modulator 29 and demodulator 32 are modulators that generate and demodulate modulated signals in bands f3 to I4. Since mutual interference is suppressed by each bandpass three-channel transmitter, full-duplex communication between terminal devices is possible. Furthermore, since the signals used for communication between terminal devices are applied as in-phase signals to each bare cable for transmission and reception on the above-mentioned bus interface, I. The communication between the NTI and the terminal equipment according to the X.430 bus interface is not disturbed.
以上説明したように本発明によれば、ＣＣＩＴＴ勧告Ｉ
．４３０バスインタフェースにより接続される端末装置
間で直接通信を行うことにより。As explained above, according to the present invention, CCITT Recommendation I
．． By communicating directly between terminal devices connected by the 430 bus interface.
網のリソースの使用効率を向上させることができる。It is possible to improve the efficiency of using network resources.
第１図及び第２図は本発明の第１及び第２の実施例を示
す構成図である。
１・・・ＮＴＩ内の送信回路、２・・・ＮＴＩ内の受信
回路、３・・・第一の端末装置内の受信回路、４・・・
第一の端末装置内の送信回路、５・・・第二の端末装置
内の受信回路、６・・・第二の端末装置内の送信回路、
７・・・送信回路、８・・・受信回路、９・・・送信回
路、１０・・・受信回路、１］〜１６・・・変成器、１
７〜２０・・・終端抵抗器、２Ｉ．２２・・・変成器、
２３．２４・・・スイッチ回路、２５〜２８・・・帯域
通過ろ波器、２９．３１・・・変調器、３０．３２・・
・復調器。FIGS. 1 and 2 are configuration diagrams showing first and second embodiments of the present invention. 1... Transmission circuit in NTI, 2... Receiving circuit in NTI, 3... Receiving circuit in first terminal device, 4...
A transmitting circuit in the first terminal device, 5... a receiving circuit in the second terminal device, 6... a transmitting circuit in the second terminal device,
7... Transmission circuit, 8... Receiving circuit, 9... Transmitting circuit, 10... Receiving circuit, 1] to 16... Transformer, 1
7-20... Terminating resistor, 2I. 22...Transformer,
23.24...Switch circuit, 25-28...Band pass filter, 29.31...Modulator, 30.32...
・Demodulator.
Claims (2)
より接続されている第一及び第二の端末装置を備え；前
記第一の端末装置の送信用第一変成器及び受信用第二変
成器のケーブル側の巻線の各中点に第三変成器を接続し
、この第三変成器の二次側に第一スイッチ回路を接続し
、この第一スイッチ回路にはスイッチ切り替えにより第
一送信回路が接続される場合と第一受信回路が接続され
る場合とがあり、前記第一スイッチ回路が前記第一送信
回路に接続される場合には前記第一送信回路より送信デ
ータが送出され、前記第一スイッチ回路が前記第一受信
回路に接続される場合には前記第一受信回路により信号
が受信され；前記第二の端末装置の送信用第一変成器及
び受信用第二変成器のケーブル側の巻線の各中点に第四
変成器を接続し、この第四変成器の二次側に第二スイッ
チ回路を接続し、この第二スイッチ回路にはスイッチ切
り替えにより第二送信回路が接続される場合と第二受信
回路が接続される場合とがあり、前記第二スイッチ回路
が前記第二送信回路に接続される場合には前記第二送信
回路より送信データが送出され、前記第二スイッチ回路
が前記第二受信回路に接続される場合には前記第二受信
回路により信号が受信されることを特徴とする端末間通
信方式。(1) CCITT Recommendation I. a first and a second terminal device connected by a 430 bus interface; at respective midpoints of the cable side windings of the first transmitting transformer and the second receiving transformer of the first terminal device; A third transformer is connected, a first switch circuit is connected to the secondary side of this third transformer, and a first transmitting circuit is connected to this first switch circuit by switching, and a first receiving circuit is connected to the third transformer. When the first switch circuit is connected to the first transmitter circuit, the first transmitter circuit sends out transmission data, and the first switch circuit connects to the first receiver circuit. a signal is received by the first receiving circuit when connected to the second terminal device; A fourth transformer is connected, a second switch circuit is connected to the secondary side of this fourth transformer, and a second transmitting circuit is connected to this second switch circuit by switching, and a second receiving circuit is connected to the second switch circuit. When the second switch circuit is connected to the second transmitter circuit, the second transmitter circuit transmits transmission data, and the second switch circuit connects to the second receiver circuit. An inter-terminal communication system characterized in that when connected, a signal is received by the second receiving circuit.
接続される第一及び第二の端末装置を備え；前記第一の
端末装置の送信用第二変成器及び受信用第二変成器のケ
ーブル側の巻線の各中点に第三変成器を接続し、この第
三変成器の二次側に通過周波数帯域がｆ１からｆ２であ
る第一ろ波器と通過周波数帯域がｆ３からｆ４（ｆ１＜
ｆ２＜ｆ３＜ｆ４）である第二ろ波器とを接続し、前記
第一ろ波器には変調後の周波数帯域がｆ１からｆ２の間
となる第一変調器が接続され、前記第二ろ波器には使用
周波数帯域がｆ３とｆ４との間である第一復調器が接続
され；前記第二の端末装置の送信用第一変成器及び受信
用第二変成器のケーブル側の巻線の各中点に第四変成器
を接続し、この第四変成器の二次側に通過周波数帯域が
ｆ１からｆ２である第三ろ波器と通過周波数帯域がｆ３
からｆ４である第四ろ波器とを接続し、前記第三ろ波器
には使用周波数帯域がｆ１とｆ２との間であり前記第一
変調器から送信される変調信号を復調する第二復調器が
接続され、前記第四ろ波器には変調後の周波数帯域がｆ
３からｆ４の間となり前記第一復調器により復調される
変調波を送信する第二変調器が接続されることを特徴と
する端末間通信方式。(2) CCITT Recommendation I. a third terminal at each midpoint of the cable-side windings of the second transmitting transformer and the second receiving transformer of the first terminal; A transformer is connected to the secondary side of this third transformer, and a first filter whose pass frequency band is from f1 to f2 and a pass frequency band from f3 to f4 (f1<
f2<f3<f4); a first modulator whose frequency band after modulation is between f1 and f2 is connected to the first filter; A first demodulator whose operating frequency band is between f3 and f4 is connected to the filter; windings on the cable side of the first transmitting transformer and the second receiving transformer of the second terminal device; A fourth transformer is connected to each midpoint of the line, and on the secondary side of this fourth transformer there is a third filter whose pass frequency band is from f1 to f2, and a third filter whose pass frequency band is f3.
to a fourth filter f4, and the third filter has a second filter whose operating frequency band is between f1 and f2 and which demodulates the modulated signal transmitted from the first modulator. A demodulator is connected to the fourth filter, and the frequency band after modulation is f.
3 to f4, and a second modulator is connected to transmit a modulated wave demodulated by the first demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8263990A JP2513061B2 (en) | 1990-03-29 | 1990-03-29 | Communication method between terminals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8263990A JP2513061B2 (en) | 1990-03-29 | 1990-03-29 | Communication method between terminals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03280746A true JPH03280746A (en) | 1991-12-11 |
| JP2513061B2 JP2513061B2 (en) | 1996-07-03 |
Family
ID=13780003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8263990A Expired - Lifetime JP2513061B2 (en) | 1990-03-29 | 1990-03-29 | Communication method between terminals |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2513061B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008541594A (en) * | 2005-05-09 | 2008-11-20 | アダプティブ スペクトラム アンド シグナル アラインメント インコーポレイテッド | Pseudo use in DSL system |
| JP2014512133A (en) * | 2011-04-08 | 2014-05-19 | アルカテル−ルーセント | Combination device for DSL phantom mode signals in a communication system |
-
1990
- 1990-03-29 JP JP8263990A patent/JP2513061B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008541594A (en) * | 2005-05-09 | 2008-11-20 | アダプティブ スペクトラム アンド シグナル アラインメント インコーポレイテッド | Pseudo use in DSL system |
| JP4918087B2 (en) * | 2005-05-09 | 2012-04-18 | アダプティブ スペクトラム アンド シグナル アラインメント インコーポレイテッド | Pseudo use in DSL system |
| JP2014512133A (en) * | 2011-04-08 | 2014-05-19 | アルカテル−ルーセント | Combination device for DSL phantom mode signals in a communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2513061B2 (en) | 1996-07-03 |
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