| 摘要 |
In a system where jitter in a first telecommunications signal (e.g., TUG-3) which is being mapped into a second telecommunications signal (e.g., STS-3C) is reduced by moving the TUG-3 pointer in the opposite direction of the pointer movement of STS-3C signal, the improvement is in suspending FIFO measurement (504) from the time of the STS-3C pointer movement until the next TUG-3 stuff or destuff, and in further limiting jitter by moving the measurement points for the TUG-3 FIFO measurements without conducting TUG-3 pointer movements when the TUG-3 pointer movement would otherwise be moved into or over the transport overhead of the TUG-3 signal. The TUG-3 pointer movement is held in abeyance until two additional pointer movements in the same direction are received, and then the jump is made.
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