Alarm Port

The alarm port on the NIU is a flexible interface that closes a circuit when a specific alarm level becomes active on the Acme Packet 4600. The Acme Packet 4600 features an alarm control signal interface that can be used in a CO location to indicate when internal alarms are generated. The Acme Packet 4600 uses alarm levels that correspond to three levels of service-disrupting incidents. When any of the three alarm levels is generated, the corresponding circuit for that level on the alarm port is closed. The alarm port uses a standard RJ45 connector.

Alarm Levels

There are three alarm types that each indicate various severity levels.

Alarm Type	Description
Minor	Functionality has been impaired to a small degree (e.g., a single fan has failed)
Major	Pending failures or unexpected events (e.g., a loss of signal)
Critical	Catastrophic condition has occurred (e.g., the system is overheating)

Alarm Port Pin-out

The alarm port has pins for ground as well as each alarm level (minor, major and critical).

Pin Number	Signal Name/Description
1	Minor Alarm (Pin 1)
2	Minor Alarm (Pin 2)
3	Major Alarm (Pin 1)
4	Major Alarm (Pin 2)
5	Critical Alarm (Pin 1)
6	Critical Alarm (Pin 2)
7	Ground
8	Ground