JPS5410604A - Main wire holding circuit for key telephone system - Google Patents
Main wire holding circuit for key telephone systemInfo
- Publication number
- JPS5410604A JPS5410604A JP7493077A JP7493077A JPS5410604A JP S5410604 A JPS5410604 A JP S5410604A JP 7493077 A JP7493077 A JP 7493077A JP 7493077 A JP7493077 A JP 7493077A JP S5410604 A JPS5410604 A JP S5410604A
- Authority
- JP
- Japan
- Prior art keywords
- main wire
- telephone system
- holding circuit
- wire holding
- key 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
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 receiving in time division both the main wire catch signal and the holding information andthen transmitting them to the trunk circuit after converting into the holding information with every main wire in order to hold the optional main wire.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7493077A JPS586439B2 (en) | 1977-06-25 | 1977-06-25 | Office line hold 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 |
---|---|---|---|
JP7493077A JPS586439B2 (en) | 1977-06-25 | 1977-06-25 | Office line hold circuit for button telephone equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5410604A true JPS5410604A (en) | 1979-01-26 |
JPS586439B2 JPS586439B2 (en) | 1983-02-04 |
Family
ID=13561555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7493077A Expired JPS586439B2 (en) | 1977-06-25 | 1977-06-25 | Office line hold circuit for button telephone equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS586439B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6131545U (en) * | 1984-07-27 | 1986-02-25 | 大塚化学株式会社 | wood grain decorative board |
JP2851337B2 (en) * | 1988-03-17 | 1999-01-27 | グランストローム,ステファン | Container |
-
1977
- 1977-06-25 JP JP7493077A patent/JPS586439B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6131545U (en) * | 1984-07-27 | 1986-02-25 | 大塚化学株式会社 | wood grain decorative board |
JP2851337B2 (en) * | 1988-03-17 | 1999-01-27 | グランストローム,ステファン | Container |
Also Published As
Publication number | Publication date |
---|---|
JPS586439B2 (en) | 1983-02-04 |
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