Nortel Networks 6300 - Manual (Page 115)

B-1 Remote Annex 6300 Hardware Installation Guide
Appendix B Connectors and Jumpers
T
his appendix describes the loopback connectors.
Loopback Connectors
10Base2 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.
10Base5 Ethernet
Loopback
Connector 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
10BaseT Ethernet
Loopback
Connector Table B-2 lists the 10BaseT Ethernet loopback connector’s pin/signal
allocations.
Table B-2. 10BaseT Ethernet Loopback Connector Wiring
Pin Number
Remote Annex
6300 Signal
Connects to Pin
Number Signal
3 Transmit + 5 Receive +
10 Transmit – 12 Receive –
Pin Number
Remote Annex
6300 Signal
Connects to Pin
Number Signal
1 Transmit + 3 Receive +
2 Transmit – 6 Receive –