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Oki Electric Launches CenterStage NX5000

Oki Electric Industry has announced the launch of its CenterStage NX5000, a carrier-grade communication server that guarantees high availability and performance suitable for next generation networks (NGN). It achieves the equivalent availability and performance level as the conventional PSTN circuit switched telephone exchanges at central offices. Thus, the CenterStage NX5000 provides a world-class IP-based communication server for telecom carriers based on a general server that can also add various applications for NGN.

Public IP telephony has been positioned as the "low-cost second phone line", the first phone line being traditional fixed lines. In Japan, however, the number of subscribers for IP telephony service has already reached 10 million, and IP telephony is becoming an important infrastructure as it can now make emergency calls. As NGNs become more widespread, various services will be integrated into IP-based communication servers, and this will require servers to be as reliable as switching systems for fixed phones.

While switching systems for circuit switched telephone networks in Japan have a highly reliable operating rate of 99.9999% (yearly downtime approximately 32 seconds), the costs for operation and maintenance are high because it is a dedicated system and it is difficult to add new services. Softswitches for public IP telephony, on the other hand, operates at a rate of 99.99% (yearly downtime approximately 53 minutes), which is not reliable enough for them to replace switches for fixed phones. Because a single softswitch handles as many subscribers as a switching system, when subscribers for IP telephony increase, it is necessary to install roughly the same number of switching systems as with fixed systems, which will result in high maintenance cost.

Taking advantage of the "CenterStage HAPF" middleware, the CenterStage NX5000 achieves an operating rate of 99.9999%, equivalent to the rate of central office telephone exchanges. In addition, by increasing the subscriber per server factor to 800 thousand, eight times the previous products, it can dramatically reduce the maintenance and operation costs. CenterStage NX5000 can be built on AdvancedTCA servers, an industry standard server architecture for next generation network platforms, and thus meets the needs of telecom carriers. In its database server, the server also includes Oracle Real Application Clusters (Oracle RACs), known for their strong track record in mission critical databases for enterprises. It also provides HSS/HLR (Home Subscriber Server/Home Location Register) functions for the IMS standards. These platforms, when combined with the CenterStage NX5000 call control server service, providing the Call Session Control Function (CSCF) in IMS, can take over existing PSTN services.

By using both CenterStage NX5000 and Oki's SIP application server, SipAs on WebLogic, telecommunications carriers can also build the integrated service platforms that are essential for profitable services provisioning of the Next Generation Networks. Oki will exhibit the CenterStage NX5000 at the "ITU-T Workshop on NGN and its Transport Networks", hosted by NGN Japan Host Committee, that will be held in the International Conference Center Kobe in Japan from April 20th to 21st.



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