JPS6478096A - Telephone system - Google Patents
Telephone systemInfo
- Publication number
- JPS6478096A JPS6478096A JP23459587A JP23459587A JPS6478096A JP S6478096 A JPS6478096 A JP S6478096A JP 23459587 A JP23459587 A JP 23459587A JP 23459587 A JP23459587 A JP 23459587A JP S6478096 A JPS6478096 A JP S6478096A
- Authority
- JP
- Japan
- Prior art keywords
- main device
- slave
- master
- devices
- slave main
- 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.)
- Pending
Links
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
PURPOSE:To easily extend and reduce the system of the titled system by address-selecting a slave main device from a master main device, and communicating with the arbitrary slave main device. CONSTITUTION:An interface circuit P of a master main device M has a means to transmit address information to slave main devices S1-Sn, and an interface circuit P1 of the slave main devices S1-Sn has the means to mutually communicate with the master main device M only when the corresponding address information is received from the master main device M. Consequently, even when the plural slave main devices are connected to a single master main device at multipoints, the mutual communication between the respective slave main devices and the master main device can be performed without a collision. Thus the system can be easily extended and reduced only with the increase and decrease of the slave main device connected at the multi-points.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23459587A JPS6478096A (en) | 1987-09-18 | 1987-09-18 | Telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23459587A JPS6478096A (en) | 1987-09-18 | 1987-09-18 | Telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6478096A true JPS6478096A (en) | 1989-03-23 |
Family
ID=16973492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23459587A Pending JPS6478096A (en) | 1987-09-18 | 1987-09-18 | Telephone system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6478096A (en) |
-
1987
- 1987-09-18 JP JP23459587A patent/JPS6478096A/en active Pending
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