more channels of information are transmitted over the same
link by allocating a different time interval ("slot" or
"slice") for the transmission of each channel. I.e. the
channels take turns to use the link. Some kind of periodic
synchronising signal or distinguishing identifier is usually
required so that the receiver can tell which channel is which.
TDM becomes inefficient when traffic is intermittent because
the time slot is still allocated even when the channel has no
was developed to overcome this problem.
(2001-06-27)