Cables; 100Base-Tx/10Base-T Pin Assignments - UNICOM GST Series User Manual

24 port 10/100base-tx switch with dual port 100/1000 module slot
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Console Port to 9-Pin DTE Port on PC
9-Pin
Serial Port
2 RXD
3 TXD
5 SGND

Cables

The RJ-45 ports on the switch support automatic MDI/MDI-X operation, so
you can use standard straight-through or crossover twisted-pair cables to
connect to any other network device (PCs, servers, switches, routers, or
hubs). Please refer to the following table for cable specifications:
Cable Types and Specifications
Cable
10BASE-T
100BASE-TX
100BASE-FX

100BASE-TX/10BASE-T Pin Assignments

With a 100BASE-TX/10BASE-T cable, pins 1 and 2 are used for transmitting
CCITT Signal
PC's 9-Pin
<---------RXD ------------
-----------TXD ---------->
-----------SGND ----------
Type
Cat. 3, 4, 5
100-ohm UTP
Cat. 5 100-ohm
UTP
50/125 or 62.5/125
micron core
multimode fiber
(MM)
Cable specification table
DTE Port
Max. Length
100 m (328 ft)
100 m (328 ft)
2 km (1.24 miles)
3 TxD
2 RxD
5 SGND
Connector
RJ-45
RJ-45
SC or ST

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