Nortel Networks AN/DC manual 10Base-T Repeater Ports ANH-8/DC only

Technical Specifications

10Base-T Repeater Ports (ANH-8/DC only)

The eight Ethernet 10Base-T repeater port RJ-45 connectors on the ANH-8/DC front panel provide UTP support. The ANH-8/DC transmits the same information over each repeater port; it allows simultaneous connection to any of the eight 10Base-T ports or AUI port.

Each of the eight shielded RJ-45 jacks is a 10Base-T port using the standard media-dependent interface with internal crossover (MDI-X) pin assignment. Each port detects the polarity of the circuit connected to RD Pins 1 and 2 and adjusts polarity as necessary to correctly complete this circuit.

The UTP repeater Ports 2 through 8 are fixed with internal crossover connection or media-dependent interface with crossover (MDI-X). This means that you use a straight-through cable when connecting to other network resources (for example, workstations or other nonrepeating devices).

Table C-4 shows the RJ-45 pin assignments for the eight front-panel 10Base-T ports and identifies the pin locations.

Table C-4.	RJ-45 Jacks Pin Assignments
Pin Assignment		Pin No.	MDI-X Signal (Function)	MDI Signal (Function)
		1	RD + (Receive from UTP wire)	TD + (Transmit to UTP wire)
12 34 5 67 8		2	RD – (Receive from UTP wire)	TD– (Transmit to UTP wire)
		3	TD + (Transmit to UTP wire)	RD + (Receive from UTP wire)
		4	Not used by 10Base-T	Not used by 10Base-T
		5	Not used by 10Base-T	Not used by 10Base-T
		6	TD – (Transmit to UTP wire)	RD – (Receive from UTP wire)
		7	Not used by 10Base-T	Not used by 10Base-T
		8	Not used by 10Base-T	Not used by 10Base-T

312410-A Rev 00 C-7