JPS6429156A - Data exchange transmission line monitor system - Google Patents

Data exchange transmission line monitor system

Info

Publication number
JPS6429156A
JPS6429156A JP18515487A JP18515487A JPS6429156A JP S6429156 A JPS6429156 A JP S6429156A JP 18515487 A JP18515487 A JP 18515487A JP 18515487 A JP18515487 A JP 18515487A JP S6429156 A JPS6429156 A JP S6429156A
Authority
JP
Japan
Prior art keywords
communication line
fault
carrier frequency
communication
modem
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
JP18515487A
Other languages
Japanese (ja)
Inventor
Saburo Ishida
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP18515487A priority Critical patent/JPS6429156A/en
Publication of JPS6429156A publication Critical patent/JPS6429156A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To use instantly a bypass route by monitoring a communication line at a prescribed period at the time of generating a fault of the communication line by means of a communication controller and applying initial setting of the communication line as required. CONSTITUTION:The communication controller 3 monitors the communication line at a prescribed period when a data frame received from a communication line has a reception data frame error due to a fault of a communication line and the stop of data transmission/reception due to inter-MODEM stack takes place. Moreover, a central controller 1, in the event of a fault of the communication line, uses the bypass route to change the communication path instantly and decrease the carrier frequency of the communication line tentatively during the monitor of the communication line when the MODEM stack is a cause and applies initial setting to the MODEM to increase the carrier frequency for a prescribed time to prevent stack. Thus, when a fault takes place in the communication line, the carrier frequency is decreased tentatively and increases the carrier frequency for a prescribed time to apply initial setting to the communication line and the MODEM thereby controlling the data transmission for the monitor of transmission and using easily the bypass route.
JP18515487A 1987-07-24 1987-07-24 Data exchange transmission line monitor system Pending JPS6429156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18515487A JPS6429156A (en) 1987-07-24 1987-07-24 Data exchange transmission line monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18515487A JPS6429156A (en) 1987-07-24 1987-07-24 Data exchange transmission line monitor system

Publications (1)

Publication Number Publication Date
JPS6429156A true JPS6429156A (en) 1989-01-31

Family

ID=16165792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18515487A Pending JPS6429156A (en) 1987-07-24 1987-07-24 Data exchange transmission line monitor system

Country Status (1)

Country Link
JP (1) JPS6429156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625648A (en) * 1994-03-23 1997-04-29 Telefonaktiebolaget Lm Ericsson Signal receiving and signal processing unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625648A (en) * 1994-03-23 1997-04-29 Telefonaktiebolaget Lm Ericsson Signal receiving and signal processing unit

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