JPS6489634A - System for detecting station warning information - Google Patents

System for detecting station warning information

Info

Publication number
JPS6489634A
JPS6489634A JP62243542A JP24354287A JPS6489634A JP S6489634 A JPS6489634 A JP S6489634A JP 62243542 A JP62243542 A JP 62243542A JP 24354287 A JP24354287 A JP 24354287A JP S6489634 A JPS6489634 A JP S6489634A
Authority
JP
Japan
Prior art keywords
step number
station warning
protecting step
sent
circuit
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
JP62243542A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamashita
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 JP62243542A priority Critical patent/JPS6489634A/en
Publication of JPS6489634A publication Critical patent/JPS6489634A/en
Pending legal-status Critical Current

Links

Landscapes

  • Time-Division Multiplex Systems (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To prevent erroneous detection and a detecting miss by changing the protecting step number of station warning information detection according to the error rate of a transmitting path. CONSTITUTION:For a digital signal which has a frame pattern and a station warning bit in a frame, the station warning bit is extracted by a station warning bit detecting circuit 2 and the signal is sent to a variable protecting step number circuit 6. On the other hand, a code error is detected in an error detecting circuit 3 and the error rate is calculated by an error counter 4 and sent to a protecting step number determining circuit 5. The protecting step number, which is determined here, is sent to the variable protecting step number circuit 6. In the variable protecting step number circuit 6, the station warning bit is inputted and the protecting step number is changed according to the error rate. Then, the station warning information to obtain protection are sent.
JP62243542A 1987-09-30 1987-09-30 System for detecting station warning information Pending JPS6489634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62243542A JPS6489634A (en) 1987-09-30 1987-09-30 System for detecting station warning information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62243542A JPS6489634A (en) 1987-09-30 1987-09-30 System for detecting station warning information

Publications (1)

Publication Number Publication Date
JPS6489634A true JPS6489634A (en) 1989-04-04

Family

ID=17105426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62243542A Pending JPS6489634A (en) 1987-09-30 1987-09-30 System for detecting station warning information

Country Status (1)

Country Link
JP (1) JPS6489634A (en)

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