Universal Broadband Router Hardware Installation Guide

B-4
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
OL-18259-01
Appendix B Cable Specifications
Fast Ethernet Port Cables and Pinouts
Auxiliary Port Cables and Pinouts
Use the RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-25 male DCE adapter (labeled MODEM) to
connect the auxiliary port to a modem.
Table B-2 lists the signals and pinouts for the asynchronous serial
auxiliary port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 male DCE adapter (labeled
MODEM).
Fast Ethernet Port Cables and Pinouts
The 10Base-T/100Base-TX Fast Ethernet ports support IEEE 802.3 and IEEE 802.3u specifications for
10-Mbps and 100-Mbps transmission over unshielded twisted-pair (UTP) cables. Each Fast Ethernet port
on the router has an RJ-45 connector to attach to Category
3 or Category 5 UTP cables.
• Use a Category 3 UTP crossover cable when connecting 10Base-T port to a hub.
Ta b l e B-1 Console Port Signaling and Cabling Using a DB-9 Adapter
Console Port (DTE) RJ-45-to-RJ-45 Rollover Cable
RJ-45-to-DB-9
Terminal Adapter
Console Device
Signal RJ-45 Pin RJ-45 Pin DB-9 Pin Signal
RTS 1
1
1. Pin 1 is connected internally to pin 8.
8 8 CTS
DTR 2 7 6 DSR
TxD 3 6 2 RxD
GND 4 5 5 GND
GND 5 4 5 GND
RxD 6 3 3 TxD
DSR 7 2 4 DTR
CTS 8
1
1 7 RTS
Ta b l e B-2 Auxiliary Port Signaling
AUX Port (DTE) RJ-45-to-RJ-45 Rollover Cable
RJ-45-to-DB-25
Modem Adapter
Modem (DCE)
Signal RJ-45 Pin RJ-45 Pin DB-25 Pin Signal
RTS 1 8 4 RTS
DTR 2 7 20 DTR
TxD 3 6 3 TxD
GND 4 5 7 GND
GND 5 4 7 GND
RxD 6 3 2 RxD
DSR 7 2 8 DCD
CTS 8 1 5 CTS