JPS645239A - Remote loopback equipment - Google Patents

Remote loopback equipment

Info

Publication number
JPS645239A
JPS645239A JP62162635A JP16263587A JPS645239A JP S645239 A JPS645239 A JP S645239A JP 62162635 A JP62162635 A JP 62162635A JP 16263587 A JP16263587 A JP 16263587A JP S645239 A JPS645239 A JP S645239A
Authority
JP
Japan
Prior art keywords
signal
loopback
transmission speed
order group
pattern generator
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
JP62162635A
Other languages
Japanese (ja)
Inventor
Hiroto Iguchi
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 JP62162635A priority Critical patent/JPS645239A/en
Publication of JPS645239A publication Critical patent/JPS645239A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To eliminate need for a pattern generator sending a special pattern without reducing an information transmission quantity by quickening slightly or retarding the transmission speed of a low-order group data signal to an equipment to which remote loopback is going to be applied than a conventional system. CONSTITUTION:A demultiplex section 31 synchronizes with a frame signal included in a multiplex signal 102 and detects a stuff control bit included in a frame. The result of majority decision 105 of a stuff control bit is given to an integration circuit 33. A remote loopback stuff circuit 32 is controlled by the output loopback control signal 106 of the integration circuit 33. An equipment desiring to apply remote loopback sets the output low-order group signal 100 of a pattern generator 10 to a multiplexer 20 slightly faster than the actual transmission speed. In releasing the loopback state, the output low- order group signal 100 of the pulse pattern generator 10 is set slightly slower than the actual transmission speed.
JP62162635A 1987-06-29 1987-06-29 Remote loopback equipment Pending JPS645239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62162635A JPS645239A (en) 1987-06-29 1987-06-29 Remote loopback equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62162635A JPS645239A (en) 1987-06-29 1987-06-29 Remote loopback equipment

Publications (1)

Publication Number Publication Date
JPS645239A true JPS645239A (en) 1989-01-10

Family

ID=15758360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62162635A Pending JPS645239A (en) 1987-06-29 1987-06-29 Remote loopback equipment

Country Status (1)

Country Link
JP (1) JPS645239A (en)

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