JPS5547783B2 - - Google Patents
Info
- Publication number
- JPS5547783B2 JPS5547783B2 JP9030875A JP9030875A JPS5547783B2 JP S5547783 B2 JPS5547783 B2 JP S5547783B2 JP 9030875 A JP9030875 A JP 9030875A JP 9030875 A JP9030875 A JP 9030875A JP S5547783 B2 JPS5547783 B2 JP S5547783B2
- 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
- H04M9/02—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)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9030875A JPS5214304A (en) | 1975-07-25 | 1975-07-25 | Inter call telephone system in button telephone system |
| US05/707,324 US4079212A (en) | 1975-07-23 | 1976-07-21 | Extension telephone system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9030875A JPS5214304A (en) | 1975-07-25 | 1975-07-25 | Inter call telephone system in button telephone system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5214304A JPS5214304A (en) | 1977-02-03 |
| JPS5547783B2 true JPS5547783B2 (enEXAMPLES) | 1980-12-02 |
Family
ID=13994901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9030875A Granted JPS5214304A (en) | 1975-07-23 | 1975-07-25 | Inter call telephone system in button telephone system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5214304A (enEXAMPLES) |
-
1975
- 1975-07-25 JP JP9030875A patent/JPS5214304A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5214304A (en) | 1977-02-03 |