JPS5410603A - Main wire catching circuit for key telephone system - Google Patents
Main wire catching circuit for key telephone systemInfo
- Publication number
- JPS5410603A JPS5410603A JP7492977A JP7492977A JPS5410603A JP S5410603 A JPS5410603 A JP S5410603A JP 7492977 A JP7492977 A JP 7492977A JP 7492977 A JP7492977 A JP 7492977A JP S5410603 A JPS5410603 A JP S5410603A
- Authority
- JP
- Japan
- Prior art keywords
- main wire
- telephone system
- key telephone
- wire catching
- telephone
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
- H04M9/022—Multiplex systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
PURPOSE:To reduce the number of the cable core between the main equipment and the telephone set, by transmitting the main wire catch signal sent from the telephone telephone through the time division to be increased the speed andthen catching the optional main wire after the dial information is added.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7492977A JPS587119B2 (en) | 1977-06-25 | 1977-06-25 | Central line acquisition circuit for button telephone equipment |
US05/917,578 US4234765A (en) | 1977-06-25 | 1978-06-21 | Key telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7492977A JPS587119B2 (en) | 1977-06-25 | 1977-06-25 | Central line acquisition circuit for button telephone equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5410603A true JPS5410603A (en) | 1979-01-26 |
JPS587119B2 JPS587119B2 (en) | 1983-02-08 |
Family
ID=13561527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7492977A Expired JPS587119B2 (en) | 1977-06-25 | 1977-06-25 | Central line acquisition circuit for button telephone equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS587119B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59158191A (en) * | 1983-02-26 | 1984-09-07 | Tamura Electric Works Ltd | Key telephone set |
-
1977
- 1977-06-25 JP JP7492977A patent/JPS587119B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59158191A (en) * | 1983-02-26 | 1984-09-07 | Tamura Electric Works Ltd | Key telephone set |
Also Published As
Publication number | Publication date |
---|---|
JPS587119B2 (en) | 1983-02-08 |
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