JPS5717398B2 - - Google Patents
Info
- Publication number
- JPS5717398B2 JPS5717398B2 JP12729275A JP12729275A JPS5717398B2 JP S5717398 B2 JPS5717398 B2 JP S5717398B2 JP 12729275 A JP12729275 A JP 12729275A JP 12729275 A JP12729275 A JP 12729275A JP S5717398 B2 JPS5717398 B2 JP S5717398B2
- 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
- H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
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 |
|---|---|---|---|
| JP50127292A JPS5251805A (en) | 1975-10-24 | 1975-10-24 | Key telephone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50127292A JPS5251805A (en) | 1975-10-24 | 1975-10-24 | Key telephone device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5251805A JPS5251805A (en) | 1977-04-26 |
| JPS5717398B2 true JPS5717398B2 (it) | 1982-04-10 |
Family
ID=14956342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50127292A Granted JPS5251805A (en) | 1975-10-24 | 1975-10-24 | Key telephone device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5251805A (it) |
-
1975
- 1975-10-24 JP JP50127292A patent/JPS5251805A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5251805A (en) | 1977-04-26 |