Installation guide

Port and Cable Assignments
16
Port and Cable Assignments
RJ-45 Ethernet Port
Caution: DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-pair
cables with RJ-45 connectors that conform with FCC standards.
An Ethernet twisted-pair link segment requires two pairs of wires. Each wire pair is
identified by two different colors. Each wire pair must be attached to the RJ-45
connector in a specific orientation detailed below.
The RJ-45 Ethernet port on the FTTH CPE can be set as an MDI or MDI-X port,
which allows straight-through cable to be used for a connection to a computer,
switch/hub, or other network device. In straight-through cable, pins 1, 2, 3 and 6 at
one end of the cable, are connected straight-through to pins 1, 2, 3 and 6 at the
other end of the cable.
Straight-Through Wiring
If the twisted-pair cable is to join two ports and only one of the ports has an internal
crossover (MDI-X), the two pairs of wires must be straight-through. (The CPE RJ-45
port can be forced to either MDI or MDI-X for using straight-thorough cable to
connect to a PC or switch.)
Pin MDI-X Signal Name MDI Signal Name
1 Receive Data plus (RD+) Transmit Data plus (TD+)
2 Receive Data minus (RD-) Transmit Data minus (TD-)
3 Transmit Data plus (TD+) Receive Data plus (RD+)
6 Transmit Data minus (TD-) Receive Data minus (RD-)
4,5,7,8 Not used Not used