3com 3848 사용자 설명서
Modem Cable
61
Modem Cable
Figure 21 9-pin to RS-232 25-pin (Switch 3812 and Switch 3824)
Figure 22 RJ-45 to RS-232 25-pin (Switch 3848)
RJ-45 Pin
Assignments
Assignments
Pin assignments are identical for 10/100 and 1000 RJ-45 connectors.
Table 10 Pin assignments
Pin Number
10/100
1000
Ports configured as MDI
1
Transmit Data +
Bidirectional Data A+
2
Transmit Data -
Bidirectional Data A-
3
Receive Data +
Bidirectional Data B+
4
Not assigned
Bidirectional Data C+
dua1740-0aaa03.book Page 61 Thursday, December 23, 2004 9:23 PM