Bilateral synchronization

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In telecommunications, bilateral synchronization (or bilateral control) is a synchronization control system between exchanges A and B in which the clock at telephone exchange A controls the data received at exchange B and the clock at exchange B controls the data received at exchange A.

Bilateral synchronization is usually implemented by deriving the timing from the incoming bitstream.

Source: from Federal Standard 1037C in support of MIL-STD-188

• Plesiochronous digital hierarchy