Section 3 Engineering Guidelines TRACER 6000 Series Split System Manual40 Copyright © 2005 ADTRAN, Inc. 612806320L1-1BQuad Ethernet Switch ModuleThe Quad Ethernet Switch module has four 10/100BaseTX interfaces (through four RJ-45 ports) thatprovide the following functions:• IEEE 802.3 and 802.3u compliant• Auto MDI/MDIX crossover• Back-pressure flow control on all full-duplex interfaces• Link and activity LEDs for each portTable 15 provides the RJ-45 interface pinout for the Quad Ethernet Switch module.7. AT-A-GLANCE SPECIFICATIONSTable 16 on page 41 contains a list of specifications for the TRACER 6000 Series split system.Table 14. 4xT1 Module RJ-45 Connector PinoutPin Name Description1 R Transmit data (ring) towards the network2 T Transmit data (tip) towards the network3, 6-8 UNUSED —4 R1 Receive data (ring) toward the network5 T1 Receive data (tip) from the networkTable 15. Quad Ethernet Switch RJ-45 Connector PinoutPin Name Source Description1 RX1 Attached Equipment Receive Positive2 RX2 Attached Equipment Receive Negative3 TX1 Module Transmit Positive4, 5 UNUSED N/A —6 TX2 Module Transmit Negative7, 8 UNUSED N/A —