Nortel Networks 6300 manual Loopback Connectors, Appendix B Connectors and Jumpers

Appendix B Connectors and Jumpers

This appendix describes the loopback connectors.

Loopback Connectors

10Base2 Ethernet Loopback Connector

10Base5 Ethernet Loopback Connector

10BaseT Ethernet Loopback Connector

The 10Base2 loopback connector is a 22-Ohm BNC terminator plug. This plug places a 22-Ohm resistor between the BNC plug’s center coaxial line and shield.

The 15-pin male Ethernet 10Base5 loopback connector is equipped with a LED that confirms the presence of the +12-volt transceiver drive voltage. Table B-1 shows this connector’s pin/signal allocations.

Table B-1. 10Base5 Ethernet Loopback Connector

	Remote Annex	Connects to Pin
Pin Number	6300 Signal	Number	Signal
3	Transmit +	5	Receive +
10	Transmit –	12	Receive –

Table B-2 lists the 10BaseT Ethernet loopback connector’s pin/signal

allocations.

Table B-2. 10BaseT Ethernet Loopback Connector Wiring

	Remote Annex	Connects to Pin
Pin Number	6300 Signal	Number	Signal
1	Transmit +	3	Receive +
2	Transmit –	6	Receive –

Remote Annex 6300 Hardware Installation Guide B-1