Retiming

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Retiming is a synchronization method of the transmission technology of synchronous telecommunication networks . It is used in PDH and SDH , but rarely in OTN technology (OTN: English optical transport network , German » optical transport network «). With retiming , a received digital signal is sent with a new clock, whichcan comefrom clock recovery , but can also come from a clock-distributing network. Retiming is one of the three tasks of electrical regenerators : refreshing , reshaping and retiming . In transparent optical networks such as the OTN, retiming has not been used up to now, since it loses the advantage of transparent signal amplification.