NON-BLOCKING SWITCHING SYSTEMS 



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M= TOTAL OUTPUTS 



Fig. 8 — Relationship of n to iV^ inputs and M outputs for a minimum in cross- 

 points in a three stage array. 



TRIANGULAR ARRAY 



If a case exists where all inputs are also the outputs, then an ar- 

 rangement such as is shown in Fig. 9 can be used. The crosspoints in 

 the intermediary switches permit connections between all switches on 

 the left hand side. For connections between two trunks on the same 

 switch it is assumed that one of the links to an intermediary switch can 



