Category Archives: What is a 66 Block

What is a 66 Block? 66 Blocks likewise known as M-Blocks are a style of punchdown block utilised to link units of cables throughout a telephone system. 66 blocks are generally intended to terminate 22 thru 26 AWG solid copper wire. The 25-pair traditional non-split 66 Block contains 50 rows; each row has four columns … Continue reading