Asynchronous transfer mode digital telecommunication network terminal equipment synchronization device

Abstract

A synchronization device, in an asynchronous transfer mode digital telecommunication network terminal equipment consists of: a jitter filter for filtering transfer jitter introduced by a network of this kind and affecting the clock frequency at which the equipment receives data via the network and for slaving the frequency of a local clock signal supplied by a local clock internal to the equipment to the output signal of the filter; buffers (MTB1, MTB2) written with the data at the clock frequency at which data is received by the equipment; and read controllers (5, 5') for reading the buffers at the clock frequency of the output signal of the filter with a time-delay relative to writing determined in such a way as to minimize the risks associated with excessively low bit rates in the recovery of data after such reading during the reaction time of the filter without departing from a permissible margin for the data recovery time-delay.

Dependencies are inferred from the claim text.