Verilink 1558D (34-00255) Product Manual - Manual (Page 4)

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Near Payload Loop.................................. 4-10
Near Line Loop ........................................ 4-11
Near Facility Loop .................................. 4-11
Near Equipment Loop ............................. 4-11
Far Payload............................................... 4-11
Far Line .................................................... 4-12
CSU Loop................................................. 4-12
NET Loop................................................. 4-12
NPC Payload Loop.................................. 4-13
BERT Testing ................................................. 4-13