JPS6248937B2 - - Google Patents
Info
- Publication number
- JPS6248937B2 JPS6248937B2 JP55037090A JP3709080A JPS6248937B2 JP S6248937 B2 JPS6248937 B2 JP S6248937B2 JP 55037090 A JP55037090 A JP 55037090A JP 3709080 A JP3709080 A JP 3709080A JP S6248937 B2 JPS6248937 B2 JP S6248937B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- data
- exchange
- communication
- specific bit
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Description
【発明の詳細な説明】
本発明はデイジタルデータ交換網の加入者回線
において、特定ビツトパターンを用いて信号を送
受する端末に対する加入者線信号方式に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a subscriber line signaling system for terminals that transmit and receive signals using a specific bit pattern in a subscriber line of a digital data switching network.
デイジタルデータ交換網、特に回線交換網に於
てはデータ端末としての性質上、対交換機との呼
設定のフエーズが終了して次に端末間のデータ通
信の開始が許可される時間は厳密に規定される事
が望ましい。 Due to the nature of data terminals in digital data switching networks, especially circuit switched networks, the time at which data communication between terminals is permitted to begin after the call setup phase with the exchange is completed is strictly regulated. It is desirable that it be done.
従来はこれを次の様な方法で実現していた。 Conventionally, this was achieved using the following method.
(i) 端末から交換機に送出されるデータに一定の
値例えば１（０）を持つビツトを付加する。即
ち、付加ビツトとして１ビツトを付加し、通信
パス（通信に使用されるチヤネルで例えば８ビ
ツトからなり、通称インチヤネルと称される）
と独立したこの付加ビツト（通称アウトチヤネ
ルとう称される）により通信開始を制御する。
呼設定フエーズの間は交換機から相手端末に送
出されるこのビツトは例えば０（１）に保たれ
る。呼設定フエーズが終了しデータ通信に入る
と交換機は端末間のパスを設定するのでこのビ
ツトがそのまま相手端末まで届く。この時相手
端末では０→１の変化を検出し通信開始が許可
されたものと見なす。(i) A bit with a certain value, for example 1 (0), is added to the data sent from the terminal to the exchange. That is, 1 bit is added as an additional bit to create a communication path (a channel used for communication, consisting of, for example, 8 bits, commonly called an inch channel).
The start of communication is controlled by this additional bit (commonly called an out channel) which is independent of the out channel.
During the call setup phase, this bit sent from the exchange to the remote terminal is kept at 0 (1), for example. When the call setup phase is completed and data communication begins, the exchange sets up a path between the terminals, so these bits are delivered directly to the other party's terminal. At this time, the other party's terminal detects a change from 0 to 1 and assumes that communication initiation is permitted.
(ii) 端末間のパスが設定され端末間データ通信が
可能になつた時、交換機から端末への信号路を
通してその旨通知する。(ii) When a path between terminals is established and data communication between terminals becomes possible, a notification to that effect is sent from the exchange to the terminals through the signal path.
この様に上記従来方法において(i)では通信デー
タの他に余分なビツトを必要とする為伝送路の帯
域を多く取り不経済である。(ii)では交換機の制御
が複雑になるという欠点がある。 As described above, in the conventional method (i), extra bits are required in addition to the communication data, which requires a large bandwidth of the transmission path, which is uneconomical. (ii) has the disadvantage that the control of the switching equipment becomes complicated.
最近ではデータ端末としてハイレベル手順端末
を利用する例が多く見受けられ将来この傾向は強
くなつて行くものと思われる。ハイレベル手順端
末は送出データ間のタイムフイラーとして
01111110の特定パターンを挿入する。そこで本発
明では上記(i)、(ii)の欠点を取り除くために、この
様な特定パターンを利用して、該パターンが相手
端末より到達した時通信開始が許可されたものと
見なす加入者線信号方式を提供することを目的と
する。上記目的を達成するため、本発明は、デイ
ジタルデータ交換網に収容されるデータ端末間の
通信において、該データ端末に、該データ端末か
ら交換機に対し特定のビツトパターンを送出する
手段と、相手データ端末から送出された特定のビ
ツトパターンの変化検出手段を設け、データ端末
間の通信開始に当たり、呼の設定の間には、各デ
ータ端末から該交換機へ特定のビツトパターンを
送出するとともに、該交換機から各データ端末に
該特定のビツトパターンと同じパターンを送出
し、次に、該交換機は該特定のビツトパターンと
異なるパターンを各端末に送出した後、該交換機
が該データ端末間の通信パスを設定し、該各デー
タ端末は該通信パスを通して、相手端末からの特
定のビツトパターンを該変化検出手段により検出
することで通信が許可されたものと判断すること
を特徴とする。 Recently, there have been many cases in which high-level procedure terminals are used as data terminals, and this trend is expected to become stronger in the future. High-level procedure terminal as a time filler between sending data
Insert a specific pattern of 01111110. Therefore, in the present invention, in order to eliminate the drawbacks (i) and (ii) above, such a specific pattern is used to create a subscriber line in which it is assumed that the start of communication is permitted when the pattern arrives from the other party's terminal. The purpose is to provide a signaling system. In order to achieve the above object, the present invention provides means for transmitting a specific bit pattern from the data terminal to the exchange, and means for transmitting a specific bit pattern from the data terminal to the exchange, in communication between data terminals accommodated in a digital data exchange network. A means for detecting a change in a specific bit pattern sent from a terminal is provided, and when communication is started between data terminals, during call setup, each data terminal sends a specific bit pattern to the exchange, and when the exchange The exchange sends a pattern that is the same as the specific bit pattern to each data terminal, and then the exchange sends a pattern different from the specific bit pattern to each terminal, and then the exchange establishes a communication path between the data terminals. Each data terminal determines that communication is permitted by detecting a specific bit pattern from the other terminal through the communication path using the change detection means.
以下図面により本発明の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明による加入者線信号方式の一実
施例を示すブロツク構成図であり、第２図は第１
図の加入者線上を伝送する端末の送信データを示
すタイミングチヤート、第３図は第１図の加入者
線上を伝送する端末の受信データを示すタイミン
グチヤートである。第１図において、１は加入者
線終端装置を含むＡ端末、２は交換機、３は加入
者線終端装置を含むＢ端末、４はデータ送受信回
路、５はパターン変化検出回路、６は信号受信回
路、７はデータ送受信回路、８はパターン変化検
出回路を示す。 FIG. 1 is a block diagram showing an embodiment of the subscriber line signaling system according to the present invention, and FIG.
FIG. 3 is a timing chart showing transmission data from a terminal transmitting on the subscriber line shown in FIG. 1, and FIG. 3 is a timing chart showing reception data from a terminal transmitting on the subscriber line shown in FIG. In FIG. 1, 1 is an A terminal including a subscriber line terminating device, 2 is an exchange, 3 is a B terminal including a subscriber line terminating device, 4 is a data transmitting/receiving circuit, 5 is a pattern change detection circuit, and 6 is a signal receiving circuit. 7 is a data transmission/reception circuit, and 8 is a pattern change detection circuit.
次に本実施例第１図の動作を第２図、第３図を
参照しながら説明すると、Ａ端末１内のデータ送
受信回路４は呼設定フエーズには加入者線ｄ、信
号線ｅを経由して交換機２の信号送受信装置６と
通信を行い呼の設定を行う。（第２図のt1）一方Ｂ
端末３内のデータ送受信回路７から呼設定フエー
ズには加入者線ｇ、信号線ｅを経由して交換機２
の信号送受信装置６と通信を行い、呼の設定を行
う。その後Ａ端末１およびＢ端末３は固定パター
ンを端末間１―３の通信が開始されるまで送出し
続ける。（第２図のt2）。 Next, the operation of the embodiment shown in FIG. 1 will be explained with reference to FIGS. 2 and 3. In the call setting phase, the data transmitting/receiving circuit 4 in the A terminal 1 passes through the subscriber line d and the signal line e. It then communicates with the signal transmitting/receiving device 6 of the exchange 2 to set up a call. (t 1 in Figure 2) On the other hand B
During the call setup phase, the data transmitting/receiving circuit 7 in the terminal 3 is connected to the exchange 2 via the subscriber line g and the signal line e.
The communication device 6 communicates with the signal transmitting/receiving device 6 to set up a call. Thereafter, terminal A 1 and terminal B 3 continue to send fixed patterns until communication between terminals 1-3 is started. (t 2 in Figure 2 ).
一方交換機２では上記Ａ端末１およびＢ端末３
が送出していた固定パターンと同一固定パターン
を両端末へしばらく送出し（第３図のt3）、次に
例えばall1の様な前記固定パターンと明確に区別
がつく様な信号を両端末へ送出する。（第３図の
t4）その後、交換機２のパスをｅからｆに切り換
える。そうすればＡ端末１の下り線ｃ及び、Ｂ端
末３の下り線ｈには第３図のt5に示す様に相手端
末のパターンが流れ込み、これをパターン変化検
出回路５or８にて検出し、端末間のデータ通信が
許可されたものと見なす。（第３図のＴ）以降端
末間でデータの通信を行う。（第２図および第３
図のt6）。 On the other hand, in exchange 2, the above A terminal 1 and B terminal 3
It sends the same fixed pattern to both terminals for a while (t 3 in Figure 3), and then sends a signal that is clearly distinguishable from the fixed pattern, such as all 1, to both terminals. Send to. (Figure 3)
t 4 ) After that, the path of exchange 2 is switched from e to f. Then, the pattern of the other terminal flows into the down line c of the A terminal 1 and the down line h of the B terminal 3, as shown at t5 in FIG. 3, and this is detected by the pattern change detection circuit 5 or 8, It is assumed that data communication between devices is permitted. After (T in FIG. 3), data communication is performed between the terminals. (Figures 2 and 3
Figure t6 ).
なおこの時、例えばＢ端末のＴはＡ端末のＴよ
り絶対時刻は遅れる事もあり得るがＡ端末の通信
データがＢ端末のＴより先に到着するという事は
起らない。 At this time, for example, the absolute time of T at terminal B may be later than that at T at terminal A, but the communication data from terminal A will never arrive before T at terminal B.
以上の説明にて分る様に本発明は、デイジタル
データ交換網にハイレベル端末等の特定パターン
をタイムフイラーとして使用する端末を収容する
事を想定し、この特定パターンを利用する事によ
り、加入者線信号方式上重要な構成要素である通
信可信号を経済的にかつ非常に高精度に実現でき
るものである。 As can be seen from the above explanation, the present invention assumes that a digital data exchange network accommodates terminals that use a specific pattern as a time filler, such as high-level terminals, and uses this specific pattern to The communication enable signal, which is an important component in the communication line signaling system, can be realized economically and with extremely high precision.
第１図は本発明による加入者線信号方式の一実
施例を示すブロツク構成図、第２図は本発明で用
いる端末の送信データを示すタイミングチヤー
ト、第３図は本発明で用いる端末の受信データを
示すタイミングチヤートを示す。
１，３…端末、２…交換機、４，７…データ送
受信回路、５，８…パターン変化検出回路。
FIG. 1 is a block diagram showing an embodiment of the subscriber line signaling system according to the present invention, FIG. 2 is a timing chart showing transmission data of a terminal used in the present invention, and FIG. 3 is a reception diagram of a terminal used in the present invention. A timing chart showing the data is shown. 1, 3...terminal, 2...exchange, 4, 7...data transmission/reception circuit, 5, 8...pattern change detection circuit.
Claims (1)
端末間の通信において、 該データ端末に、該データ端末から交換機に対
し特定のビツトパターンを送出する手段と、 相手データ端末から送出された特定のビツトパ
ターンの変化検出手段を設け、 データ端末間の通信開始に当たり、呼の設定の
間には、各データ端末から該交換機へ特定のビツ
トパターンを送出するとともに、該交換機から各
データ端末に該特定のビツトパターンと同じパタ
ーンを送出し、 次に、該交換機は該特定のビツトパターンと異
なるパターンを各端末に送出した後、該交換機が
該データ端末間の通信パスを設定し、 該各データ端末は該通信パスを通して、相手端
末からの特定のビツトパターンを該変化検出手段
により検出することで通信が許可されたものと判
断することを特徴とする加入者線信号方式。[Scope of Claims] 1. In communication between data terminals accommodated in a digital data exchange network, means for transmitting a specific bit pattern from the data terminal to the exchange, and means for transmitting a specific bit pattern from the other party's data terminal to the data terminal; When starting communication between data terminals and during call setup, each data terminal sends a specific bit pattern to the exchange, and the exchange also sends a specific bit pattern to each data terminal. The exchange sends a pattern that is the same as the specific bit pattern to each terminal, and then the exchange sends a pattern different from the specific bit pattern to each terminal, and then the exchange sets up a communication path between the data terminals, A subscriber line signaling system characterized in that each data terminal determines that communication is permitted by detecting a specific bit pattern from the other terminal through the communication path using the change detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3709080A JPS56132843A (en) | 1980-03-24 | 1980-03-24 | Subscriber's line signal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3709080A JPS56132843A (en) | 1980-03-24 | 1980-03-24 | Subscriber's line signal system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56132843A JPS56132843A (en) | 1981-10-17 |
| JPS6248937B2 true JPS6248937B2 (en) | 1987-10-16 |
Family
ID=12487855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3709080A Granted JPS56132843A (en) | 1980-03-24 | 1980-03-24 | Subscriber's line signal system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56132843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021630U (en) * | 1988-06-15 | 1990-01-08 |
-
1980
- 1980-03-24 JP JP3709080A patent/JPS56132843A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021630U (en) * | 1988-06-15 | 1990-01-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56132843A (en) | 1981-10-17 |
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