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China IP67 Auto-dial Explosion-proof VoIP Telephone Manufacturers and Suppliers - Best Factory - J&R Technology
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1st (phone line box/demarc/NID) 2nd-4th (CAT 5e wiring T-568A). I want to redo the whole wiring with an outdoor graded CAT6 cable. So can I just do a 2 pair wiring? And
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