Cisco Systems ASR 901 10G Manual De Usuario

The router has four alarm inputs. The alarm setting is open or closed.

Open means that the normal condition has current flowing through the contact (referred to as 
normally closed contact). The alarm is generated when the current stops.

Closed means that no current flows through the contact (referred to as normally open contact). The 
alarm is generated when the current flows.

The alarm input is a dry-contact alarm port. You can connect up to four alarm inputs from devices, such 
as a door, a temperature gauge, or a fire alarm, to the alarm port. You can use the alarm-contact 
command to set the alarm severity to minor, major, or critical. An alarm generates a system message.

External DC bias is not required for the alarm port inputs.

 shows the RJ-45 connector pinouts used for alarm, and 

 lists the connector pinouts 

and signals.

 list the pinouts for the alarm port (RJ45) on the Cisco ASR 901 10G router.

3

5

3

579

12345678

1

Alarm input 1

2

Alarm input 2

3

Not connected

4

Alarm input 3

5

Alarm input 4

6

Not connected

7

Not connected

8

Alarm input return