Cisco ASR 903 Installation Manual page 118

Pinouts
DB-9 Connector Pinouts
Table 5-7
Table 5-7
Pin
1
2
3
4
5
6
7
8
9
Note Twisted pairs are 2-5, 6-8, 4-7.
Note The X.21, V.35, RS-485, EIA-449, EIA-530, and IRIG-B standards are not currently supported by
software.
RJ-45 Connector Pinouts
Table 5-8
Table 5-8
Pin
1
2
3
4
5
6
7
8
Note Twisted Pairs are: 1-2, 3-6, 4-5, 7-8.
Cisco ASR 903 Router Hardware Installation Guide
5-6
summarizes the pinouts for each serial interface type when using a DB-9 connector.
DB-9 Pin-outs
Standard DB-9 Direction
NC Output
RxD Input
TxD Output
DTR Output
GND
DSR Input
RTS Output
CTS Input
NC/GND
summarizes the pinouts for each serial interface type when using an RJ-45 connector.
RJ45 Pinout
Standard DB-9 Direction
RTS Input
DTR Input
TxD Input
GND
GND
RxD Output
DST Output
CTS Output
Description RS-485
Unused NC
Receive NC
Transmit IRIG-B (RS232)
DTR TxD-
GND GND
DSR RxD
RTS TxD+
CTS RxD+ (
Unused or Ring NC
Description RS-485
Ready to send RxD+ (RS485)
DTR RxD- (RS485)
Transmit NC
Signal ground Gnd
Signal ground Gnd
Receive data IRIG-B (RS232)
DSR TxD-
CTS TxD+
Chapter 5 Troubleshooting
IRIG-B
NC
NC
IRIG-B (RS232)
IRIG-B- (RS485)
GND
NC
IRIG-B+
NC
NC
IRIG-B
NC
NC
NC
Gnd
Gnd
IRIG-B (RS232)
IRIG-B- (RS485)
IRIG-B+ (RS485)
OL-25178-03