3com 3C16896 8 slot AC Chassis Benutzerhandbuch
78
A
PPENDIX
A: S
WITCH
7750 C
ABLES
Figure 45 The AUX Cable
Table 54 lists the AUX cable pin-outs.
Electrical Port
Connector
Connector
Figure 46 illustrates the RJ-45 connector.
Figure 46 The RJ-45 Connector
Table 55 lists RJ-45 MDI port pin-outs.
Table 54 AUX Cable Pin-outs
RJ-45
Signal
Direction
DB-25
DB-9
1
RTS
--->
4
7
2
DTR
--->
20
4
3
TXD
--->
2
3
4
CD
<---
8
1
5
GND
---
7
5
6
RXD
<---
3
2
7
DSR
<---
6
6
8
CTS
<---
5
8
Enlarged B side
Enlarged B side
Enlarged A side
Enlarged A side
Enlarged C side
Enlarged C side
DB25 Male
DB25 Male
Label
Label
DB9Male
DB9Male
8P8C Plug
8P8C Plug
Table 55 RJ-45 MDI Port Pin-outs
Pinout
10BASE-T/100BASE-TX
1000BASE-T
Signal
Function
Signal
Function
1
Tx+
Send data
BIDA+
Send data to direction A
2
Tx-
Send data
BIDA-
Receive data from direction A
PIN #8
PIN #1