Bull DPX/20 Installation And Configuration Manual - page 41

B-5

Appendix B – Connections to Your Network

Type of Connectors

Two types of connectors are used for FDDI Adapters:

• UTP (copper) connector

• Fiber ring connectors.

UTP Connector

UTP Single Ring Connector

Unshielded twisted pair port pinouts for port types A, B, M (Master) and S (Slave).

The UTP Single Ring Adapter uses standard RJ-45 connectors and receptacles. The table

below summarizes the port pinouts.

RJ-45 Contact

Signal

1

Transmit (Tx+)

2

Transmit (Tx–)

7

Receive (Rx+)

8

Receive (Rx–)

Note: Category 5 UTP cables for FDDI require 1  $ 7 and 2 $ 8 crossovers.

RJ-45 Loopback Plug

Part No. 90713001–001

RJ-45 Connector

RX–

RX+

TX+

TX–

Figure 12. RJ-45 Pinout Showing Loopback.