| 摘要 |
An ATM system with ABR function is disclosed, that comprises a VS/VD. The VS/VD informs a downstream segment portion of a CCR area of a BRM cell folded back in an upstream segment. The downstream segment portion compares an ER area of the BRM cell with the CCR area. When the value of the CCR area is smaller than the value of the ER area, the downstream segment portion updates the ER area with the value of the CCR area.
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