User`s manual

NVF-800S 4-Band VDSL IP DSLAM USER’S MANUAL Ver_B.2
130
Appendix A: Cable Requirements
A.1 Ethernet Cable
A CAT 3, 4 or 5 UTP (unshielded twisted pair) cable is typically used to connect the Ethernet device to the modem. A
10Base-T cable often consists of four pairs of wires, two of which are used for transmission. The connector at the end of the
10Base-T cable is referred to as an RJ-45 connector and it consists of eight pins. The Ethernet standard uses pins 1, 2, 3
and 6 for data transmission purposes. (Table A-1)
Table A-1 RJ-45 Ethernet Connector Pin Assignments
MDI MDI-X
PIN #
Signal
Media Dependant
interface
Signal
Media Dependant
interface-cross
1 TX+ Transmit Data + RX+ Receive Data +
2 TX- Transmit Data - RX- Receive Data -
3 RX+ Receive Data + TX+ Transmit Data +
4 -- Unused -- Unused
5 -- Unused -- Unused
6 RX- Receive Data - TX- Transmit Data -
7 -- Unused -- Unused
8 -- Unused -- Unused
Figure A-1 Standard RJ-45 repectacle/connector
Note:
Please make sure your connected cables are with same pin assignment as above table before deploying the cables into your
network.