User guide

C-20 Cisco 2500 Series Access Server User Guide
Asynchronous Serial Ports
Note The Asynchronous breakout cable is equivalent to a console or auxiliary port with a
roll-over RJ-45 cable attached. See Table C-17 for asynchronous device connection
options.
Table C-15 Asynchronous-Line Cable Pinout (68-Pin SCSI)
RJ-45
Plug Pin Signal
68-Pin
SCSI (J1)
1 1 CTS 39
2 DSR 5
3 RXD 38
4 RXD GND 4
5 TXD GND 37
6 TXD 3
7 DTR 36
8 RTS 2
2 1 CTS 43
2 DSR 9
3 RXD 42
4 RXD GND 8
5 TXD GND 41
6 TXD 7
7 DTR 40
8 RTS 6