Delay variation absorption method of SDH transmission system

摘要

PROBLEM TO BE SOLVED: To suppress a delay fluctuation of a reception station side of the synchronous digital hierarchy(SDH) transmission system sufficiently small. ;SOLUTION: In the SDH transmission system applying mapping/de-mapping to an ascynchronous signal, a de-mapped ascynchronous signal is once stored in an FIFO memory in an FIFO section 4 at a receiver station side. Then the delay fluctuation of a receiver station side is minimized by reading the stored asynchronous signal one by one frame each in a timing of '125μsec×(received AU pointer/783) + a prescribed time'.;COPYRIGHT: (C)1997,JPO