66 block
A 66 block is a type of punch-down block used to connect sets of wires in a telephone system. Due to the proliferation of Voice over IP (VoIP), 66 blocks are slowly becoming obsolete.
A 66 block is a type of punch-down block used to connect sets of wires in a telephone system. Due to the proliferation of Voice over IP (VoIP), 66 blocks are slowly becoming obsolete.
A 66 block is a type of punch-down block used to connect sets of wires in a telephone system. Due to the proliferation of Voice over IP (VoIP), 66 blocks are slowly becoming obsolete.
Source: Wikipedia "66 block" · CC BY-SA 4.0
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