On an ACX Series router, the alarm contact port (labeled ALARM) provides four user-defined input ports and two user-defined output ports. Whenever a system condition occurs -- such as a rise in temperature, and depending on the configuration, the input or output port is activated.
| Product / Application | Software | Introduced Release |
|---|---|---|
| ACX710 | Junos OS | 20.2R1 |
| ACX4000 | Junos OS | 12.3X51-D10 |
| ACX5448-D | Junos OS | 19.3R1 |
| ACX5448-M | Junos OS | 19.3R1 |
| ACX5448 | Junos OS | 18.2R1 |