Installation manual

Table 25: Pinouts for an RJ-45 to DB-9 Adapter
Signal RJ-45 Pin DB-9 Pin
CTS (clear to send) 1 8
DTR (data carrier detect) 2 6
TXD (transmit data) 3 2
GND (ground) 4 5
GND (ground) 5 5
RXD (receive data) 6 3
DSR (data set ready) 7 4
RTS (request to send) 8 7
Figure 80: Null-modem Cable Pinouts on page 121 shows the pinouts for a 9-pin to 25-pin (RS-232)
null-modem cable.
Figure 80: Null-modem Cable Pinouts
Figure 81: PC-AT Serial Null-modem Cable Pinouts on page 122 shows the pinouts for a 9-pin to 9-pin
(PC-AT) null-modem serial cable.
Technical Specifications
BlackDiamond X Series Switches Hardware Installation Manual 121