netsys NV-720 Series, User Manual

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NV-720S ADSL2+/VDSL2 Wi-Fi USER’S MANUAL Ver. A.2
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A.2 Telephone wire
Standard telephone wire of any gauge or type-flat, twisted or quad is used to connect the Modem to the telephone network. A
telephone cable typically consists of three pairs of wires, one of which is used for transmission. The connector at the end of
the telephone cable is called an RJ-11 connector and it consists of six pins. POTS (plain old telephone services) use pins 3
and 4 for voice transmission. A telephone cable is shown below. ( Figure A-6 )
A
B
Figure A-4 Telephone cable
The A and B connectors on the rear of the Modem are RJ-11 connectors. These connectors are wired identically. The RJ-11
connectors have six positions, two of which are wired. The Modem uses the center two pins. The pin out assignment for
these connectors is presented below. ( Table A-3 )
Table A-3 RJ-11 Pin out Assignments
Pin# MNEMONIC FUNCTION
1 NC Unused
2 NC Unused
3 TIP POTS
4 RING POTS
5 NC Unused
6 NC Unused