3-12Table 3-1 Console cable pinoutsPin (RJ-45) Signal Pin (DB-9) Signal1 RTS 8 CTS2 DTR 6 DSR3 TXD 2 RXD4 SG 5 SG5 SG 5 SG6 RXD 3 TXD7 DSR 4 DTR8 CTS 7 RTSConnecting the console cableTake the following steps to connect the console cable, when configuring the switch on the terminal.1) Plug the DB-9 female plug of the console cable to the serial port of the PC or the terminal where theswitch is to be configured.2) Connect the RJ-45 connector of the console cable to the console port of the switch.Connecting the AUX Cable (Optional)The AUX cable is used for the remote Modem dial-up configuration for the S7900E series.IntroductionThe AUX cable is an 8-core shielded cable. One end is an RJ-45 RS-232 connector, which can beplugged into the console port. The other end is furnished with a DB-9 connector, which can be pluggedinto the DB-9 socket on the Modem. The AUX cable is the same as the console cable. For details, seeFigure 3-14 and Table 3-1.Connection procedureFollow these steps to connect the AUX cable:1) Plug the RJ-45 connector of the AUX cable into the console port.2) Plug the DB-9 connector of the AUX cable into the serial port of the analog Modem.Connecting the COM CableIntroductionWhen connected to an external PoE power supply, the S7900E series can monitor the running status ofthe external PoE power supply through the COM port. The COM ports (one RS-485 port and oneRS-232 port) of the S7902E and the S7903E-S are located on the rear panel of the chassis.When the S7903E, S7906E, S7906E-V, or S7910E provides PoE supply through the PSR1400-D, theycan monitor the running status of the PoE supply through the PoE monitoring port (one RS-485 port) onthe PSR1400-D.
