Title:
LOOPED DATA TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JPH0591116
Kind Code:
A
Abstract:
PURPOSE: To set freely the structure of one multi-frame in the looped data transmission system.
CONSTITUTION: A one-multi-frame consists of 20 STM-1 frames F(1)-F(20). rows (1-9) and time slots (1-9) of the STM-1 frame are an SOH (section overhead) and a virtual C4 is set to the rows (1-9) and time slots (11-270) of the STM-1 frame. A prescribed time slot in the virtual C4 is used for a multi-frame synchronization pattern and time slots of an optional number are used for a house keeping channel and the remaining time slots are used for a service channel.
Inventors:
ITSUGAYA KINJI
Application Number:
JP27308091A
Publication Date:
April 09, 1993
Filing Date:
September 25, 1991
Export Citation:
Assignee:
NEC CORP
International Classes:
H04J3/06; H04J3/00; H04J3/08; H04J3/16; H04L7/00; H04Q5/22; (IPC1-7): H04J3/06; H04L7/00; H04L12/42; H04Q5/22
Attorney, Agent or Firm:
Yanagi Kawa Shin
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