3.9 Time-Division Multiplexing (Frame Synchronization Methods for frame sync (1) Sending a frame sync signal from the transmitter over a separate channel (2) Deriving the frame sync from the TDM signal itself. TDM frame sync format … Channel s1s2…sk| Channel Channel… Channel s1s2|… n data 1 data2 data n dat Information sync words Information sync words words words Frame Fig 3-36 TDM sync format6 3.9 Time-Division Multiplexing (Frame Synchronization) • Methods for frame sync: • (1) Sending a frame sync signal from the transmitter over a separate channel • (2) Deriving the frame sync from the TDM signal itself. • TDM frame sync format Channel N data … s1 s2 … sk Channel 1 data Channel 2 data … Channel N data s1 s2 … Information words sync words Information words sync words Frame Fig.3-36 TDM sync format