Nortel Networks AN/DC User Manual
Technical Specifications
312410-A Rev 00
C-7
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.
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.
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).
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).
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)
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
1 2 3 4 5 6 7 8