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Cables, Connectors, and Pinouts
Figure 1-5
Type 3 lobe cables use either FTP or UTP cable and terminate at the network end with an RJ-11 plug.
(See
Figure
Figure 1-6
The ports labeled "Ethernet", "10BaseT", "Token Ring", "Console", and "AUX" are safety extra-low
Warning
voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because the
Basic Rate Interface (BRI) circuits are treated like telephone-network voltage avoid connecting the
SELV circuit to the telephone network voltage circuits.
Table 1-3
Pin
1
2
3
6
Proper common-mode line terminations should be used for the unused Category 5 UTP cable pairs 4/5
Note
and 7/8. Common-mode termination reduces the contributions to electromagnetic interference (EMI)
and susceptibility to common-mode sources.
Depending on your RJ-45 interface cabling requirements, use the pinouts in
PA-4R-DTR Dedicated Token Ring Port Adapter Installation and Configuration
1-8
Token Ring Type 1 Lobe Cable Connectors—RJ-45 and MAU Types
1-6.) The PA-4R-DTR end of the cable is an RJ-45 connector.
Token Ring Type 3 Lobe Cable Connectors—RJ-45 and RJ-11 Types
4R-DTR port adapter end
MAU or Token Ring
switch end
PA-4R-DTR RJ-45 Connector Pinout
Description
Receive Data + (RxD+)
RxD–
Transmit Data + (TxD+)
TxD–
4R-DTR port adapter end
MSAU or
MAU end
Chapter 1
Overview
Figure 1-7
and
Figure
1-8.
OL-3590-02
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