Connector / Pin Assignment
MDI-X to MDI Connections
Almost network adapters of end stations use MDI ports. For this reason, FS3-1600 switch uses MDI-X ports for each numbered port that allow you to connect directly to end stations with normal or parallel cables (see Figure A-1).
Figure A-1: MDI-X to MDI cable connections
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MDI : Media Dependent Interface is the IEEE standard for the interface to unshielded twisted pair (UTP) cable. |
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MDI-X : Media Dependent Interface is the IEEE standard for the interface to unshielded twisted pair (UTP) cable. Where “X” refers to the crossover function. |
MDI-X to MDI-X Connections
Almost switches and hubs use MDI-X ports, therefore, you should use crossover cable to connect both FS3-1600 switch and the party of switches or hubs (see Figure A-2).
Figure A-2: MDI-X to MDI-X cable connections
Serial RS-232 Connector Pin Assignments
The serial RS-232 connector is a female 9-pin D-sub connector, as shown in Figure A-3. The pin assignments is summarized in Table A-1. The DSR and CTS signal outputs are always no connected. The CD, DTR, RTS, and RI signal inputs are not used. This arrangement allows a management station (a PC or terminal) to directly connect to the switch using a straight-through cable.
Figure A-3: DB-9 Service Port Connector
Table A-1: The Pin Assignments of Serial Connector
Pin |
Signal |
Description |
1 |
CD |
Carrier Detect (not used) |
2 |
TXD |
Transmit Data (output) |
3 |
RXD |
Receive Data (input) |
4 |
DTR |
Data Terminal Ready (not used) |
5 |
GND |
Signal Ground |
6 |
DSR |
Data Set Ready (not connected) |
7 |
RTS |
Request To Send (not used) |
8 |
CTS |
Clear To Send (not connected) |
9 |
RI |
Ring Indicator (not used) |
Shell |
- |
Chassis Ground |
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