Ethernet Cable Connections; Automatic Mdi/Mdi-X Configuration; Crossover Cable Option - Alcatel-Lucent 9500 MPR User Manual

3.6

ETHERNET CABLE CONNECTIONS

Part numbers are assigned for unshielded, straight-through CAT5 UTP (PN 3AL48960AA-
AL) and CAT5E UTP (PN 3AL15052AA-AL) cables. The CAT5 or CAT5E cables can be used
for 10/100/1000BASE-T applications, however the CT5E cable is the recommended cable for
1000BASE-T applications. The CAT5E cable has a tighter, higher quality twisting on the wire
pairs and is less susceptible to crosstalk. Refer to
Figure 3-8 for pair wire colors. See
3.6.1 Automatic MDI/MDI-X Configuration
The Ethernet PHY provides automatic Medium Dependent Interface (MDD/Medium Inde-
pendent Interface-crossover (MDI-X). Automatic MDI/MDI-X configuration eliminates the
need for crossover cables.
3.6.2

Crossover Cable Option

Crossover type cables with pin 1 wired to pin 3 and pin 2 wired to pin 6 can be used, but
are not necessary. Crossover is automatically performed by the Control & Switching Mod-
ule (CSM), resulting in a straight-through interface to the link partner.
Table 3-3 10/100BASE-T Ethernet Connector Pinout
PIN
1
2
3
4/5
6
7/8
PIN
1
2
3
4
5
6
7
8
3-10
Figure 3-9
FUNCTION
TD+
TD-
RD+
GND
RD-
GND
Table 3-4 1000BASE-T Ethernet Connector Pinout
FUNCTION
TRDA+
TRDA-
TRDB+
TRDB-
TRDC+
TRDC-
TRDD+
TRDD-
Table 3-3 and Table 3-4
and Figure 3-10 for interconnect information.
PORT
MDI
Output
Output
Input
N/A
Input
N/A
DIRECTION
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
for pinout. See
MDI-X
Input
Input
Output
N/A
Output
N/A