JPS57132456A - Speed selecting communication system - Google Patents
Speed selecting communication systemInfo
- Publication number
- JPS57132456A JPS57132456A JP56017778A JP1777881A JPS57132456A JP S57132456 A JPS57132456 A JP S57132456A JP 56017778 A JP56017778 A JP 56017778A JP 1777881 A JP1777881 A JP 1777881A JP S57132456 A JPS57132456 A JP S57132456A
- Authority
- JP
- Japan
- Prior art keywords
- line
- terminal
- communication
- speed
- terminator
- 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.)
- Granted
Links
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)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
PURPOSE:To make transmission in high speed through the hope of a subscriber and to improve the communication of traffic by utilizing an idle channel, by switching a communication speed at terminal, any time when requests come from terminals or exchangers. CONSTITUTION:To a terminal 17 having communication function at a plurality of speeds, a line terminator 19 is connected via a clock signal line 6 and an information line 7, and a time division exchanger 4 is connected to the terminator 19 via a time division multiplex subscriber line 20 to constitute a speed selecting communication system. The terminator 19 is provided with a multiplexer 23 to control data transmission between the information line 17 and the multiplex subscriber line 20. A clock supply circuit 21 and a clock selection circuit 22 are connected to the multiplexer 23, and the circuit 22 is connected to the clock line 6. According to the request from the terminal 17 of the exchanger 4, the communication speed is switched at any time according to the communication speed at the terminal 17, the data transmission is made to high speed through the desire of subscribers, allowing to use vacant channels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56017778A JPS57132456A (en) | 1981-02-09 | 1981-02-09 | Speed selecting communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56017778A JPS57132456A (en) | 1981-02-09 | 1981-02-09 | Speed selecting communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57132456A true JPS57132456A (en) | 1982-08-16 |
JPS6261182B2 JPS6261182B2 (en) | 1987-12-19 |
Family
ID=11953170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56017778A Granted JPS57132456A (en) | 1981-02-09 | 1981-02-09 | Speed selecting communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57132456A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60134687A (en) * | 1983-12-23 | 1985-07-17 | Mitsubishi Corp | Television conference telephone system |
JPS612454A (en) * | 1984-06-14 | 1986-01-08 | Fujitsu Ltd | Multiple exchange system |
US6446146B1 (en) * | 1998-08-20 | 2002-09-03 | Fujitsu Limited | Line terminating device |
-
1981
- 1981-02-09 JP JP56017778A patent/JPS57132456A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60134687A (en) * | 1983-12-23 | 1985-07-17 | Mitsubishi Corp | Television conference telephone system |
JPS612454A (en) * | 1984-06-14 | 1986-01-08 | Fujitsu Ltd | Multiple exchange system |
US6446146B1 (en) * | 1998-08-20 | 2002-09-03 | Fujitsu Limited | Line terminating device |
Also Published As
Publication number | Publication date |
---|---|
JPS6261182B2 (en) | 1987-12-19 |
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