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CenterStage NX Series

CenterStage HAPF

CenterStage HAPF Overview

The CenterStage NX Series is a line of communications servers designed for large-scale carriers and optimized to serve as a foundation for Next Generation Network(*1) (NGN) services. By applying proprietary high-availability(*2) middleware to all CenterStage Series models, OKI is able to deliver the high performance, capacity, and reliability demanded by NGN.

OKI is committed to offering flexible support for new services over NGN based on its experience developing and operating IP telephone infrastructure with 5 million subscribers using the previous generation of CenterStage Series products.

CenterStage NX Series Scope

Carrier-grade reliability with 99.9999% availability

CenterStage HAPF, which serves as the foundation for OKI's CenterStage NX Series, is based on a redundant server architecture. The combination of this architecture with the following reliability-driving functionality delivers 99.9999% availability (about 33 seconds of down time each year), a standard that rivals exchanges designed for central office deployment.

Reliability-driving functionality

  • Cluster functionality : Switches at high speeds among redundant, general-purpose servers.
  • Service relief functionality : Service won't stop, even when switching servers due to a failure.
  • File update functionality : Software can be upgraded without stopping the service.
  • Live patch functionality : Programs can be dynamically modified as they execute without switching servers, even while the service is live.

Delivering high performance and capacity for large-scale networks

Thanks to its High-speed Service Engine, the CenterStage NX Series provides high-speed processing of sudden and diverse service demand caused by large numbers of subscribers. This capability enables the NX5000 to accommodate as many as 800,000 subscribers while delivering call processing performance in excess of 1 million busy hour call attempts (BHCA)-all in a 2U server with just 2 CPUs.

This capacity-building functionality helps lower maintenance and management costs by dramatically reducing the number of general-purpose servers, which require complex maintenance and management.

Models featuring CenterStage HAPF

  • *1NGN(Next Generation Networks)

    A next-generation network architecture for which the ITU-T is currently developing the specification. Based on the Internet Protocol (IP), this next-generation communications network assumes the enhancement and expansion of IP networks and incorporates conditions such as QoS and the separation of service and transport functions. NGN standardization efforts at the ITU-T began with Study Group 13 (SG13) during the second half of the last session (2000 to 2003). Intensive consideration of the technology continues today based on an organization known as FG-NGN (Focus Group on NGN), which was created in 2004 to accelerate the consideration of NGN specifications.

  • *2HA(High Availability)

    A system that stays operational for a high percentage of the time. Carrier-grade systems are required to provide 99.9999% reliability (about 33 seconds of down time each year).

  • *Company and product names appearing on this page are the trademarks or registered trademarks of their respective owners.

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