NetComm IP DSLAM NCT480 - Manual (Page 95)

YML856 Rev3 NCT480 IP DSLAM User Guide NCT480 IP DSLAM User Guide
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Line Port / POTS Port Champ Pin
J1 J2 Tip Ring
20 44 20 45
21 45 21 46
22 46 22 47
23 47 23 48
24 48 24 49
None None 25 50
Table A-1 RJ-1 Connector Pin Assignment