JPS5499503A - Key telephone set - Google Patents
Key telephone setInfo
- Publication number
- JPS5499503A JPS5499503A JP605178A JP605178A JPS5499503A JP S5499503 A JPS5499503 A JP S5499503A JP 605178 A JP605178 A JP 605178A JP 605178 A JP605178 A JP 605178A JP S5499503 A JPS5499503 A JP S5499503A
- Authority
- JP
- Japan
- Prior art keywords
- key telephone
- circuit
- timing
- main
- multiplication
- 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
- H04M9/002—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
- H04M9/007—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 wherein the key telephone sets are star-connected to a central unit by a limited number of lines
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 |
---|---|---|---|
JP605178A JPS5818037B2 (ja) | 1978-01-23 | 1978-01-23 | ボタン電話機 |
US05/889,657 US4184054A (en) | 1977-03-28 | 1978-03-21 | Key telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP605178A JPS5818037B2 (ja) | 1978-01-23 | 1978-01-23 | ボタン電話機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5499503A true JPS5499503A (en) | 1979-08-06 |
JPS5818037B2 JPS5818037B2 (ja) | 1983-04-11 |
Family
ID=11627810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP605178A Expired JPS5818037B2 (ja) | 1977-03-28 | 1978-01-23 | ボタン電話機 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5818037B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56166660A (en) * | 1980-04-22 | 1981-12-21 | Telephonie Ind Commerciale | Universal mutual communication terminator |
JPS57170635A (en) * | 1981-04-13 | 1982-10-20 | Nippon Telegr & Teleph Corp <Ntt> | Radio telephone set |
-
1978
- 1978-01-23 JP JP605178A patent/JPS5818037B2/ja not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56166660A (en) * | 1980-04-22 | 1981-12-21 | Telephonie Ind Commerciale | Universal mutual communication terminator |
JPS57170635A (en) * | 1981-04-13 | 1982-10-20 | Nippon Telegr & Teleph Corp <Ntt> | Radio telephone set |
Also Published As
Publication number | Publication date |
---|---|
JPS5818037B2 (ja) | 1983-04-11 |
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