Sagem 4450E - Manual (Page 90)

SAGEM 3P@C
3P@C Installation Manual
Page 4-29 Reproduction and communication in any form prohibited without the written permission of SAGEM SA
1.1.1.49 1.1.1.49 1.1.1.49 1.1.1.49 Preparing the network cables
A Category 5 twisted pair is made up of 8-core thin wires. They are identified into groups by the color of the
external insulation layer of the thin wires. In general, a single color and a single color plus white are used to
identify a twisted pair, or color dots are sometimes used for paired identification. According to this method of
identification, the eight-core thin wires of a Category 5 twisted pair can be divided into four pairs: Orange &
orange/white, blue & blue/white, green & green/white, brown & brown/white.
Usually there are two kinds of Ethernet cables connecting the two Ethernet devices: Straight-through cable and
crossover cable. Figures 4-39 and 4-40 show respectively the connection methods of a straight-through cable
and a crossover cable. Selection shall be based on the application requirements. In the figures, "
SIDE1 " and
" SIDE2 " indicate the two ends of the network cable respectively while numbers " 1 ~ -8 " represents the line
sequence at the two ends.
Figure 4-39 Illustration of making a straight-through cable
Pinouts of a straight-through cable
Illustration
Orange/white
Orange
Green/white
Blue
Blue/white
Green
Brown/white
Brown
Orange/white
Orange
Green/white
Blue
Blue/white
Green
Brown/white
Brown
Figure 4-40 Illustration of making a crossover cable
Pinouts of a crossover cable Illustration
Orange/white
Orange
Green/white
Blue
Blue/white
Green
Brown/white
Brown
Green/white
Green
Orange/white
Blue
Blue/white
Orange
Brown/white
Brown
1.1.1.50 1.1.1.50 1.1.1.50 1.1.1.50 Ethernet interface connection
Connect one end of the twisted pair that uses RJ-45 connectors at both ends to the Ethernet interface of the
SMUB, and the other end to the Ethernet interface of the other Ethernet-compatible device in the LAN, as shown
in Figure 4-41: