US Patent 7839885 Connection memory for tributary time-space switches

A method of switching a plurality of tributaries disposed among a plurality of time slots in a frame is disclosed. The method generally includes the steps of (A) buffering the frame, (B) switching the tributaries among the time slots in response to a read address and (C) generating the read address in response to a plurality of identifications in a connection map, the connection map defining (i) at most one of the identifications for each of the tributaries and (ii) one of the identifications for each of the time slots carrying other than the tributaries.