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JPS5797750A - Method for synchronization of pcm terminal station equipment - Google Patents

Method for synchronization of pcm terminal station equipment

Info

Publication number
JPS5797750A
JPS5797750A JP55173268A JP17326880A JPS5797750A JP S5797750 A JPS5797750 A JP S5797750A JP 55173268 A JP55173268 A JP 55173268A JP 17326880 A JP17326880 A JP 17326880A JP S5797750 A JPS5797750 A JP S5797750A
Authority
JP
Japan
Prior art keywords
synchronization
terminal station
pcm terminal
stations
pulse
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
JP55173268A
Other languages
Japanese (ja)
Inventor
Toshikatsu Yasuda
Sumio Yagi
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 JP55173268A priority Critical patent/JPS5797750A/en
Publication of JPS5797750A publication Critical patent/JPS5797750A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To establish synchronization rapidly, by transmitting a specific pattern from a station, which receives an alarm pulse to stations, to a station where the step-out of synchronization occurs. CONSTITUTION:In case of the step-out of receiving synchronization, an alarm pulse to stations is generated to report the step-out of synchronization to a PCM terminal station 2 of the other party. When receiving the alarm pulse to stations, the PCM terminal station 2 of the other party outputs a specific pattern pulse 7a to a transmission line 8. A synchronizing device 5 of a PCM terminal station 1 detects the specific pattern to establich synchronization. Since the PCM terminal station 1 is ready for receiving of the specific pattern pulse immediately after the generation of the alarm pulse to stations, the time required for establishment of synchronization is shortened, and therefore, drop- out of data is reduced.
JP55173268A 1980-12-10 1980-12-10 Method for synchronization of pcm terminal station equipment Pending JPS5797750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55173268A JPS5797750A (en) 1980-12-10 1980-12-10 Method for synchronization of pcm terminal station equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55173268A JPS5797750A (en) 1980-12-10 1980-12-10 Method for synchronization of pcm terminal station equipment

Publications (1)

Publication Number Publication Date
JPS5797750A true JPS5797750A (en) 1982-06-17

Family

ID=15957293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55173268A Pending JPS5797750A (en) 1980-12-10 1980-12-10 Method for synchronization of pcm terminal station equipment

Country Status (1)

Country Link
JP (1) JPS5797750A (en)

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