4/8/16E1 over Ethernet aggregation Gateway
15
Chapter Five Accessories
5.1 Method of making lines
5.1.1 How to make E1 connecting cable
75ΩLine Making Method:
120ΩLine Making Method:
Connection between core and The pins are arranged as follows:
core and between skin and skin;
No connection between skin and core
5.1.2 Making of Console Interface Connecting Cable
5.1.3Making of Ethernet Interface Connecting Cable
Ethernet interface Connecting Cable adopts twisted pair line with its specific
making methods divided into two international standards, which are
EIA/TIA568A and EIA/TIA568B. Position the tail of crystal head
downward (i.e. the flat side upward), determine the lines with figures as 1 2
3 4 5 6 7 8 from left to right, and the distributions of each line are as
follows:
(EIA/TIA568A standard)
(EIA/TIA568B standard)
Pin
No.
Connection signal
Sequence of
twisted pair line
Pin
No.
Connection
signal
Sequence of
twisted pair
lines
1(+), 2(-) pins are input pins
4(+), 5(-) pins are output pins
Pin3 is output pin(TXD
）
Pin6 is input pin (RXD)
4,
5
pins
are
GND
pins(GND)
1, 2, 3, 4, 5, 6, 7, 8
