Lan Connector And Cables; 10Base-T Cabling - 3Com SuperStack II User Manual

LAN Connector and
Cables

10BASE-T Cabling

The two Ethernet connectors, labeled L1 and L2, can be cabled using
either 10BASE-T or 100BASE-TX cabling.
Boundary router models can use only the L1 Ethernet port. If you upgrade
to full router software, the second port will be functional.
The following figure shows the pinouts of the L1 and L2 connectors
(RJ-45). The connector bodies connect the cable shield to chassis ground.
Figure 9 Ethernet Connector
TX- RX-
TX+
RX+
1 2 3 4 5 7 8 6
RJ-45 female (shielded)
Table 8 lists supported 10BASE-T cable types and emissions classes.
Table 8 10BASE-T Cable Types and Emissions Compliance
Cable Type
†
UTP 100 ohm:
Category 3
Category 4
Category 5
Shielded TP † 100 ohm:
Category 3
Category 4
Category 5
* Shielding of all cable types should be terminated 360 degrees at the cable plug.
† All UTP compliance testing was accomplished using cables built with Stewart Connector
Co. connector, part number 940 SP-36-08-08.

LAN Connector and Cables

Emissions Compliance
FCC and VCCI Class A
yes
yes
yes
yes
yes
yes
37
*
EN55022 Class B
no
no
no
yes
yes
yes