Pinout and LED Details
Use a 4-port EIA-232 DCE, 10 feet, Female DB-25, and CAB-HD4-232FC. Pinout of the DB25 connector
to be connected to the RS232-to-RS422 converter.
Table 18: RS422 Pinout
Pin
4
20
5
6
Alarm Port Pinout
The table below summarizes the external alarm input pinout.
Table 19: External Alarm Input Pinout
Pin
1
2
3
4
5
6
7
8
Console/Aux RJ45 RS232 Serial Port Pinout
The table below summarizes the console/aux RJ45 RS232 serial port pinout.
Table 20: Console/Aux RJ45 RS232 serial port
Pin
1
Signal Name
TXD+
TXD-
RXD+
RXD-
Signal Name
Description
ALARM0_IN
Alarm input 0
ALARM1_IN
Alarm input 1
No connect
ALARM2_IN
Alarm input 2
ALARM3_IN
Alarm input 3
No connect
No connect
COMMON
Alarm
common
Signal
Direction
Description
Name
RTS
Not
—
Used
Description
RTS pin for RS232
DTR pin for RS232
CTS pin for RS232
DSR pin for RS232
Cisco NCS 560-4 Router Hardware Installation Guide
Alarm Port Pinout
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