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to a standard DB-9 serial port jack, found on a PC or laptop. Any standard
twisted pair cable can be used between the Acme Packet 4600 and the console
adapter.
PWR LED
The green PWR LED indicates the operational state of the
NIU.
Possible states of the PWR LED include:
•
on — indicates that power is being applied to the NIU.
•
off — indicates that power is not being applied to the NIU.
H/S LED
The blue H/S LED indicates whether the NIU is seated properly.
Possible states of the H/S LED include:
•
on/blinking — indicates that the NIU is not seated properly. When this occurs,
ensure that you remove power to the platform and attempt to properly lock the NIU
to the chassis. Then apply power to the chassis. If the H/S LED is no longer lit,
proceed with normal operations.
•
off — when the PWR LED is on, this indicates that the NIU is seated properly in
the chassis.
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.
Chapter 2
Network Interface Unit
2-7
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