Hardware Installation Manual
58
Document #: LTRT-40881
Mediant 1000B MSBR
A.2.1 OSN3 Module
The OSN3 module is part of the OSN3 server platform. This module provides the port
connector interfaces and is housed in Slot #2 on the rear panel.
A.2.1.1
Ports Description
The OSN3 module is shown below and described in the subsequent table.
Figure
A-1: OSN3 Module Ports
Table
A-2: OSN3 Module Port Description
Item #
Label
Description
1
RJ-45 port for RS-232 serial interface (COM1).
2
RJ-45 port for Gigabit Ethernet. The interface provides
automatic detection and switching between 10Base-T,
100Base-TX and 1000Base-T data transmission (Auto-
Negotiation). Auto-wire switching for crossed cables is also
supported (Auto-MDI/X).
3
USB 2.0 port.
4
-
Handle for inserting and extraction module from slot.
The RJ-45 connector pinouts for Gigabit Ethernet interface are listed in the table below:
Table
A-3: Gigabit Ethernet Interface (RJ-45) Connector Pinouts
Pin
100Base-Tx
1000Base-T
I/O
Signal
Signal
Function
1
O
Tx+
I/O
BI_DA+
2
0
Tx-
I/O
BI_DA-
3
I
Rx+
I/O
BI_DB+
4
I/O
BI_DC+
5
I/O
BI_DC-
6
I
Rx-
I/O
BI_DB-
7
I/O
BI_DD+
8
I/O
BI_DD-
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