38
CrossFire 8720 Fast Ethernet Layer 3 Switch, v. 1.00.02, P/N: 710001800
Cable and PIN Information
A.4 EIA 232 Null-Modem Connections
Use a null-modem (crossover) cable shown in figure 13 to connect the
Management port to a terminal (DTE) with a 25-pin connector. Alternatively, you
can use a modem cable and a null-modem adapter. DTR (pin 20) and RTS (pin 4)
must be on, or high, on your terminal or in your terminal emulation program.
Figure 13. EIA 232 Null-Modem Cable DB-25 for 25-pin Connector
Use a null-modem (crossover) cable like the one shown in figure 14 to connect the
Management port to a terminal (DTE) with a 9-pin connector. Alternatively, you
can use a modem cable and a null-modem adapter. DTR (pin 4) and RTS (pin 7)
must be on, or high, on your terminal or in your terminal emulation program.
Figure 14. EIA 232 Null-Modem Cable DB-9 for 9-pin Connector
Signal Name
Terminal/PC End
25-Pin Male
Switch End
9-Pin Female
TXD
RTS
DCD
GND
DSR
CTS
8
DTR
RI
2
3
7
2
6
5
4
3
20
1
8
5
7
6
9
22
4
RXD
Signal Name
Terminal/PC End
9-Pin Male
Switch End
9-Pin Female
TXD
RTS
DCD
GND
DSR
CTS
8
DTR
RI
3
3
7
2
6
8
7
2
4
1
1
5
5
6
9
9
4
RXD
Содержание CrossFire 8720
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