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3. Installation
RuggedCom® RuggedBackbone™ 26 RX1501 Installation Guide Rev 104
3.6. WAN Ports: BNC
The RX1501 supports optional E1 WAN ports with BNC connectors. The Tx and Rx connections
are labelled on the line module. See the illustration below for the connection configuration.
Rx Tx
Chassis
RTIP
Chassis
TTIP
Figure 3.18. RJ45 T1/E1 Pin Configuration
3.7. Copper Ethernet Ports
The RuggedBackbone™ RX1501 can be ordered with up to 36 10/100Base-TX ports that allow
connection to standard CAT-5 UTP cable with RJ45 male connectors. All copper Ethernet ports
feature auto-negotiation, auto-polarity, and auto-crossover functions. The female RJ45 connector
can accept and take advantage of screened (commonly known as “shielded”) cabling.
3.7.1. RJ45 Twisted-Pair Copper Ports
Female RJ45 connectors are available on LMs that support 10/100Base-T and on LMs and SMs
that support 10/100/1000Base-T Ethernet. See the illustration and table below for pin configuration
and assignment.
Figure 3.19. RJ45 Ethernet Pin
Configuration
RJ45 Pin 10/100Base-Tx
10/100/1000Base-
Tx
1 RX+ A+
2 RX- A-
3 TX+ B+
4 NC C+
5 NC C-
6 TX- B-
7 NC D+
8 NC D-
Table 3.3. RJ45 Ethernet Pin Assignment
3.7.2. Gigabit Ethernet 1000Base-TX Cabling Recommendations
The IEEE 802.3ab Gigabit Ethernet standard defines 1000 Mbit/s Ethernet communications
over distances of up to 100 meters using 4 pairs of CAT-5 (or higher) balanced, unshielded
twisted-pair cabling. For wiring guidelines, system designers and integrators should refer to
the Telecommunications Industry Association (TIA) TIA/EIA-568-A wiring standard for minimum
cabling performance specifications required for proper Gigabit Ethernet operation. To ensure
reliable, error-free data communications, new and pre-existing communication paths should
be verified for TIA/EIA-568-A compliance. The table: Cabling Categories and 1000Base-
TX Compliance summarizes the relevant cabling standards as they apply to 100Base-TX
connections.