JPS5690661A - Two-circuit simultaneous connection and exchange system of key telephone set - Google Patents
Two-circuit simultaneous connection and exchange system of key telephone setInfo
- Publication number
- JPS5690661A JPS5690661A JP16753079A JP16753079A JPS5690661A JP S5690661 A JPS5690661 A JP S5690661A JP 16753079 A JP16753079 A JP 16753079A JP 16753079 A JP16753079 A JP 16753079A JP S5690661 A JPS5690661 A JP S5690661A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- main device
- telephone set
- key telephone
- circuits
- 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
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 |
---|---|---|---|
JP16753079A JPS5690661A (en) | 1979-12-25 | 1979-12-25 | Two-circuit simultaneous connection and exchange system of key telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16753079A JPS5690661A (en) | 1979-12-25 | 1979-12-25 | Two-circuit simultaneous connection and exchange system of key telephone set |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5690661A true JPS5690661A (en) | 1981-07-22 |
JPS6257160B2 JPS6257160B2 (ja) | 1987-11-30 |
Family
ID=15851395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16753079A Granted JPS5690661A (en) | 1979-12-25 | 1979-12-25 | Two-circuit simultaneous connection and exchange system of key telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5690661A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4825461A (en) * | 1985-01-31 | 1989-04-25 | Canon Kabushiki Kaisha | Data communication apparatus for data and/or speech communication on a plurality of communication lines |
JPH0346887A (ja) * | 1989-07-14 | 1991-02-28 | Nitsuko Corp | 釦電話装置のインタフェイス接続方式 |
-
1979
- 1979-12-25 JP JP16753079A patent/JPS5690661A/ja active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4825461A (en) * | 1985-01-31 | 1989-04-25 | Canon Kabushiki Kaisha | Data communication apparatus for data and/or speech communication on a plurality of communication lines |
JPH0346887A (ja) * | 1989-07-14 | 1991-02-28 | Nitsuko Corp | 釦電話装置のインタフェイス接続方式 |
Also Published As
Publication number | Publication date |
---|---|
JPS6257160B2 (ja) | 1987-11-30 |
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