JPS5793764A - Line switching system - Google Patents
Line switching systemInfo
- Publication number
- JPS5793764A JPS5793764A JP17008980A JP17008980A JPS5793764A JP S5793764 A JPS5793764 A JP S5793764A JP 17008980 A JP17008980 A JP 17008980A JP 17008980 A JP17008980 A JP 17008980A JP S5793764 A JPS5793764 A JP S5793764A
- Authority
- JP
- Japan
- Prior art keywords
- station
- intra
- exchanger
- relay line
- rank
- 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
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
PURPOSE:To transmit information surely, by testing an intra-station relay line periodically and automatically and selecting the relay line according to the types of communication. CONSTITUTION:An outgoing side A station exchanger selects an intra-station relay line and transmits a test pattern to a station B exchanger, and an exchanger at the station B discriminates if the line to be used is of rank A (e.g., possible for 9600 bits/sec) or of rank B (e.g., 4800 bits/sec) with a central processing device CC depending whether the received data have much error or less. The result of discrimination is transmitted to the station A, and the exchanger at the station A stores the result of test of each intra-station relay line. When a connection request comes from FAX or the like, the exchanger at the station A selects the intra-station relay line of rank A based on the result of a test, and in case of communication between telephone sets, the intra-station relay line of rank B is selected. The intra-station relay lines having unfavorable test result are informed to the maintenance personnel through typing-out, allowing to make the maintenance work easy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17008980A JPS5793764A (en) | 1980-12-02 | 1980-12-02 | Line switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17008980A JPS5793764A (en) | 1980-12-02 | 1980-12-02 | Line switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5793764A true JPS5793764A (en) | 1982-06-10 |
Family
ID=15898434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17008980A Pending JPS5793764A (en) | 1980-12-02 | 1980-12-02 | Line switching system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5793764A (en) |
-
1980
- 1980-12-02 JP JP17008980A patent/JPS5793764A/en active Pending
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