JPS5542796B2 - - Google Patents
Info
- Publication number
- JPS5542796B2 JPS5542796B2 JP11719775A JP11719775A JPS5542796B2 JP S5542796 B2 JPS5542796 B2 JP S5542796B2 JP 11719775 A JP11719775 A JP 11719775A JP 11719775 A JP11719775 A JP 11719775A JP S5542796 B2 JPS5542796 B2 JP S5542796B2
- Authority
- JP
- Japan
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
- H04M9/006—Exchange line circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11719775A JPS5242008A (en) | 1975-09-30 | 1975-09-30 | Line control system for push button telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11719775A JPS5242008A (en) | 1975-09-30 | 1975-09-30 | Line control system for push button telephone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5242008A JPS5242008A (en) | 1977-04-01 |
| JPS5542796B2 true JPS5542796B2 (ref) | 1980-11-01 |
Family
ID=14705788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11719775A Granted JPS5242008A (en) | 1975-09-30 | 1975-09-30 | Line control system for push button telephone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5242008A (ref) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4949506A (ref) * | 1972-09-14 | 1974-05-14 | ||
| US4081624A (en) * | 1976-09-21 | 1978-03-28 | Nippon Tsu Shin Kogyo K.K. | Key telephone intercom line system |
-
1975
- 1975-09-30 JP JP11719775A patent/JPS5242008A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5242008A (en) | 1977-04-01 |