DESCRIPTION OF PARTS
9
2 . 5. 2 Connecting to a network device
A connection from the network port to a network device such as an E1 line or an NTU
requires a crossover cable. Connections are defined in the table below.
Figure 2.9 Connection from DSU to network device
2 . 5. 3 RJ45 Connector layout
Figure 2.4 shows both the plug and socket head on so that any connecting wires are behind
the connector. The connector numbering is shown.
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
LOCKING TAB
Figure 2.10 RJ45 layout
DSU
port pin
DSU port
function
Network port
pin
Network port
function
1
Tx tip
4
Rx tip
2
Tx ring
5
Rx ring
3
Tx shield
6
Rx shield
4
Rx tip
1
Tx tip
5
Rx ring
2
Tx ring
6
Rx shield
3
Tx shield
7
Not connected Not connected Not connected
8
Not connected Not connected Not connected
