JPH0420745U - - Google Patents
Info
- Publication number
- JPH0420745U JPH0420745U JP1990062650U JP6265090U JPH0420745U JP H0420745 U JPH0420745 U JP H0420745U JP 1990062650 U JP1990062650 U JP 1990062650U JP 6265090 U JP6265090 U JP 6265090U JP H0420745 U JPH0420745 U JP H0420745U
- Authority
- JP
- Japan
- Prior art keywords
- interface
- signal
- communication
- control device
- circuit
- 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
Landscapes
- Communication Control (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Description
第１図はこの考案の一実施例によるライン・モ
ニタ接続時のインタフエース回路の回路図、第２
図はデータ通信システム例を示すブロツク図、第
３図は従来のライン・モニタの接続方法を示すイ
ンタフエース回路の回路図である。
図において、１はデータ処理装置、２は通信制
御装置、３は回線終端装置、４はインタフエース
・ケーブル、５は通信回線、６はライン・モニタ
、７はインタフエース・アダプタである。なお、
図中、同一符号は同一、又は相当部分を示す。
Figure 1 is a circuit diagram of an interface circuit when a line monitor is connected according to an embodiment of this invention;
The figure is a block diagram showing an example of a data communication system, and FIG. 3 is a circuit diagram of an interface circuit showing a conventional line monitor connection method. In the figure, 1 is a data processing device, 2 is a communication control device, 3 is a line termination device, 4 is an interface cable, 5 is a communication line, 6 is a line monitor, and 7 is an interface adapter. In addition,
In the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
御装置で、複数かつ偶数の通信回線との接続用イ
ンタフエース回路を持つ通信制御装置において、
各インタフエース信号の入出力点にスイツチ回路
を設け、通常は各インタフエース信号が回線終端
装置と接続され、必要時スイツチ回路を切換える
ことにより隣接のインタフエース回路の信号と接
続されるように構成したことを特徴とする通信制
御装置。 A communication control device that controls data communication of a data processing device, and has an interface circuit for connection to a plurality of even number of communication lines,
A switch circuit is provided at the input/output point of each interface signal, and each interface signal is normally connected to a line termination device, and when necessary, by switching the switch circuit, it is configured to be connected to the signal of an adjacent interface circuit. A communication control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990062650U JPH0420745U (en) | 1990-06-13 | 1990-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990062650U JPH0420745U (en) | 1990-06-13 | 1990-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0420745U true JPH0420745U (en) | 1992-02-21 |
Family
ID=31591995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990062650U Pending JPH0420745U (en) | 1990-06-13 | 1990-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420745U (en) |
-
1990
- 1990-06-13 JP JP1990062650U patent/JPH0420745U/ja active Pending
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