Multi-channel connection arrangement

摘要

The method is applied at an exchange (SW) having a digital switching network (DSN) and an access unit (ACC). To form the multichannel link using two separate slots (SLOT3,SLOT7;SLOT5,SLOT28) in input and output time frames. The transit times (T1-T3) of three channels are found by a measuring device (MONIT). The controller (CONTR) then selects two of the three channels algorithmically and enters their measured transit times as input values. The selected channels are assigned to the link and delayed accordingly for synchronisation purposes.