W e present a tame multaplexed swatchang ( T M S ) archatecture bualt from 2 x 2 optacal exchange switches with feedforward fiber delays f o r the time-space-time domain permutation m telecommuntcatrons. The multachannel tame slot permuter as based on the bat-controlled, spaiaal Lambda network [ 6 ] . For L = 2' parallel frames of 2* tame slots each, the multachannel tame slot permuter has the hardware complexaty of O ( $ ( l + m ) 3 ) and the local switch control complexaty of O(1). 1176 0-7803-0917-0/93$03.00 0 1993 IEEE