JPH0131359B2 - - Google Patents
Info
- Publication number
- JPH0131359B2 JPH0131359B2 JP6408480A JP6408480A JPH0131359B2 JP H0131359 B2 JPH0131359 B2 JP H0131359B2 JP 6408480 A JP6408480 A JP 6408480A JP 6408480 A JP6408480 A JP 6408480A JP H0131359 B2 JPH0131359 B2 JP H0131359B2
- Authority
- JP
- Japan
- Prior art keywords
- extension
- communication path
- line
- communication
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
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 |
---|---|---|---|
JP6408480A JPS56161753A (en) | 1980-05-16 | 1980-05-16 | Key telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6408480A JPS56161753A (en) | 1980-05-16 | 1980-05-16 | Key telephone set |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56161753A JPS56161753A (en) | 1981-12-12 |
JPH0131359B2 true JPH0131359B2 (sl) | 1989-06-26 |
Family
ID=13247858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6408480A Granted JPS56161753A (en) | 1980-05-16 | 1980-05-16 | Key telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56161753A (sl) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6422193A (en) * | 1987-07-17 | 1989-01-25 | Iwatsu Electric Co Ltd | Telephone system |
JPH0670962A (ja) * | 1992-06-29 | 1994-03-15 | Masao Takuwa | 動物の下にマットを敷くことにより、マットから動物の湿気を取 り除く乾燥機具 |
-
1980
- 1980-05-16 JP JP6408480A patent/JPS56161753A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS56161753A (en) | 1981-12-12 |
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