JPS5537026A - Distribution control type push button telephone - Google Patents
Distribution control type push button telephoneInfo
- Publication number
- JPS5537026A JPS5537026A JP10978478A JP10978478A JPS5537026A JP S5537026 A JPS5537026 A JP S5537026A JP 10978478 A JP10978478 A JP 10978478A JP 10978478 A JP10978478 A JP 10978478A JP S5537026 A JPS5537026 A JP S5537026A
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- push button
- communication
- button type
- communication line
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
PURPOSE:To enable the construction of the push button type telephone without requiring the main device by connecting the communication lines of a plurality of the push button type telephones to the control lines in parallel and making the push button type telephones compact and large number of telephone production possible. CONSTITUTION:There are accommodated a line CO-1 to k in which to the push button type telephone KT-i, other telephone is connected in parallel, an internal communication line INT-1 to l, and a control line CL and provided with a data transmission and receiving circuit T-i and R-i, a control circuit having a communication line INT empty condition mimorizing function CC-i, a communication switch SW-i, and a telephone circuit NW-i. Based on the internal communication line number specifying information and the partner telephone specifying information, the control circuit CC-i supplements the vacancy of the communication line. In accordance with the data transmission and receiving circuit, the data necessary for the relative communication is exchanged and the internal communication line is connected to the telephone circuit by the communication passage switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10978478A JPS5928318B2 (en) | 1978-09-08 | 1978-09-08 | Distributed control button telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10978478A JPS5928318B2 (en) | 1978-09-08 | 1978-09-08 | Distributed control button telephone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5537026A true JPS5537026A (en) | 1980-03-14 |
JPS5928318B2 JPS5928318B2 (en) | 1984-07-12 |
Family
ID=14519126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10978478A Expired JPS5928318B2 (en) | 1978-09-08 | 1978-09-08 | Distributed control button telephone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5928318B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5856597A (en) * | 1981-09-11 | 1983-04-04 | ミテル・コーポレーション | Service circuit in telephone system |
JPS6172498A (en) * | 1984-09-18 | 1986-04-14 | Nakayo Tsushinki:Kk | Constitution and connection system of key telephone set |
JPS6180993A (en) * | 1984-09-21 | 1986-04-24 | アルカテル・エヌ・ブイ | Button telephone system which can be distributed and controlled |
JPS61294990A (en) * | 1985-06-21 | 1986-12-25 | Tamura Electric Works Ltd | Data transmission system for key telephone system |
-
1978
- 1978-09-08 JP JP10978478A patent/JPS5928318B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5856597A (en) * | 1981-09-11 | 1983-04-04 | ミテル・コーポレーション | Service circuit in telephone system |
JPH0439838B2 (en) * | 1981-09-11 | 1992-06-30 | ||
JPS6172498A (en) * | 1984-09-18 | 1986-04-14 | Nakayo Tsushinki:Kk | Constitution and connection system of key telephone set |
JPS6180993A (en) * | 1984-09-21 | 1986-04-24 | アルカテル・エヌ・ブイ | Button telephone system which can be distributed and controlled |
JPS61294990A (en) * | 1985-06-21 | 1986-12-25 | Tamura Electric Works Ltd | Data transmission system for key telephone system |
Also Published As
Publication number | Publication date |
---|---|
JPS5928318B2 (en) | 1984-07-12 |
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