Rj-45 Connector Pinouts - Cisco ASR 903 Installation Manual

Troubleshooting
Pi n
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

The table below summarizes the pinouts for each serial interface type when using an RJ-45 connector.
Table 38: RJ45 Pinout
Pi n
1
2
3
4
5
6
7
8
Note
Twisted Pairs are: 1-2, 3-6, 4-5, 7-8.
Standard Direction Description
DB-9
DSR Input DSR
RTS Output RTS
CTS Input CTS
NC/GND — Unused or Ring
Standard Direction Description
DB-9
RTS Input Ready to
send
DTR Input DTR
TxD Input Transmit
GND — Signal
ground
GND — Signal
ground
RxD Output Receive data
DST Output DSR
CTS Output CTS
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
RS-485 IRIG-B
RxD- NC
TxD+ IRIG-B+
RxD+ NC
NC NC
RS-485 IRIG-B
RxD+ NC
(RS485)
RxD- (RS485) NC
NC NC
Gnd Gnd
Gnd Gnd
NC IRIG-B (RS232)
TxD- IRIG-B- (RS485)
TxD+ IRIG-B+
(RS485)
RJ-45 Connector Pinouts
173