JPS6478096A - Telephone system - Google Patents

Telephone system

Info

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
Application number
JP23459587A
Other languages
Japanese (ja)
Inventor
Masayuki Tsurusaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP23459587A priority Critical patent/JPS6478096A/en
Publication of JPS6478096A publication Critical patent/JPS6478096A/en
Pending legal-status Critical Current

Links

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.
JP23459587A 1987-09-18 1987-09-18 Telephone system Pending JPS6478096A (en)

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)

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