A synchronization technique used in time division multiplexing (TDM) to adjust for slight timing discrepancies between incoming bit streams. As necessary, bit stuffing adds some number of pulses to incoming bits streams to synchronize them with the mux clock and position each of them properly in the outgoing aggregate bit stream.The mux also inserts a code into the outgoing bit stream to advise the receiving mux of the stuff bits in order that it can properly destuff the signal. See also bit, bit stream, pulse, synchronize, and TDM.