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Acme Packet NN9200-NPU3, 002-0521-50
The NPU processing unit is responsible for media processing and security front end functions. Media processing functions include NAPT, gate opening and closing, media bandwidth policing, packet marking, and QoS measurement. SFE functions include hardware based access control, traffic management and DoS protection. The NPU utilizes state-of-the art network processors, traffic management components and other specialized hardware components to deliver scalable, low-latency media processing and forwarding functions. Media packets are selectively forwarded to the transcoding unit when media transcoding is required. NPU cards are deployed in a 1+1 (1 active + 1 standby) redundancy mode for high availability. This processing unit includes one LED that indicates if the card is active, and one LED that indicates the operational status of the card.
The NPU3 module is always paired with an SPU2 module to provide an increase in SIP call capacity and registrations per second compared to an SPU1/NPU1 pair.
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