| 摘要 |
The invention relates to a method of transmitting at least one tributary in synchronous mode at the level of a link of a data network, said tributary comprising at least one frame in the SDH or SONET format, said frame comprising at least one payload envelope area and one transport overhead area, said payload envelope area comprising at least one payload and load supervision data related to the payload, said transport overhead area comprising at least transport supervision data related to transport and an area of fixed patterns comprising fixed patterns, said method comprising steps of:—modifying said frame so as to generate a modified frame; transmitting said modified frame, the modification comprising steps in which:—part of said fixed patterns are deleted from said fixed pattern area; the positions of said part of the fixed patterns deleted are recorded; replacement data are inserted at the level of said positions, the method being characterized in that said replacement data comprise the transport supervision data of the frame of said tributary.
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