4WTO LINE CARD (12 CCT) This is a 12 port Four wire transmission only (4WTO) line card. It is compatible with the existing 4WTO CU on the network connection side. The 12 circuit 4WTO card is designed for on-premise, 600 Ohm, 4-Wire applications only where

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Please specify your question about 4WTO LINE CARD (12 CCT) This is a 12 port Four wire transmission only (4WTO) line card. It is compatible with the existing 4WTO CU on the network connection side. The 12 circuit 4WTO card is designed for on-premise, 600 Ohm, 4-Wire applications only where *

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