JPS645150A - Channel system selection system - Google Patents

Channel system selection system

Info

Publication number
JPS645150A
JPS645150A JP15961987A JP15961987A JPS645150A JP S645150 A JPS645150 A JP S645150A JP 15961987 A JP15961987 A JP 15961987A JP 15961987 A JP15961987 A JP 15961987A JP S645150 A JPS645150 A JP S645150A
Authority
JP
Japan
Prior art keywords
channel
instruction
active
duplicated
constitution
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
JP15961987A
Other languages
Japanese (ja)
Inventor
Ryoji Fukusato
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15961987A priority Critical patent/JPS645150A/en
Publication of JPS645150A publication Critical patent/JPS645150A/en
Pending legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To ensure the exchange service in on-line by executing an instruction to both duplicated channel systems so as to decide the normality thereby setting the normal system as an active system. CONSTITUTION:A subscriber circuit 1 and a processor 4 are connected via a 0 system channel 5 and a 1 system channel 6 in the channel system of duplicated constitution. In setting either the 0 system channel system 5 or the 1 system channel system 6 at the leading processing as the active system and the other as the standby system, the instruction of initializing or write is issued to both the systems 5, 6 during leading, whether or not the instruction is executed normally is judged and the normal channel system is set as the active system. Thus, it is not required to set a channel system having a fault potentially as the active system and the exchange service in on-line is guaranteed.
JP15961987A 1987-06-29 1987-06-29 Channel system selection system Pending JPS645150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15961987A JPS645150A (en) 1987-06-29 1987-06-29 Channel system selection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15961987A JPS645150A (en) 1987-06-29 1987-06-29 Channel system selection system

Publications (1)

Publication Number Publication Date
JPS645150A true JPS645150A (en) 1989-01-10

Family

ID=15697673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15961987A Pending JPS645150A (en) 1987-06-29 1987-06-29 Channel system selection system

Country Status (1)

Country Link
JP (1) JPS645150A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319731B1 (en) * 2000-02-22 2002-01-09 박종섭 Method for testing duplex switching and recovery function of main processor of mobile exchange using operator instruction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319731B1 (en) * 2000-02-22 2002-01-09 박종섭 Method for testing duplex switching and recovery function of main processor of mobile exchange using operator instruction

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