Open, Reliable Communications Architecture
The ORCA product family consists of carrier-class VoIP infrastructure products. Service providers throughout the world use ORCA gateways and softswitches to deliver local,
long distance and enhanced telephone services.

Capacity and Performance
The RDT-8v supports up to 4,000 subscribers. With a capacity of supports up to 480 voice ports on 16 E1 interfaces, the RDT-8v enables broadband network operators to engineer their networks to deliver cost-effective high-quality telephone service. Each RDT-8v supports 19,200 BHCA. One equipment rack can support up to 28,000 subscribers.

Standards Compliance and Interoperability
The RDT-8v complies with the PacketCableTM NCS (Network Call Signaling) protocol specification to ensure interoperability with a wide range of customer premise devices including cable Multimedia Terminal Adapters and Integrated Access Devices from leading vendors such as ARRIS, Motorola and Scientific Atlanta. For PSTN connectivity, the standard V5.2 interface of the RDT-8v interoperates with local exchange switches from Alcatel, Ericsson, Huawei,
Lucent, NEC, Nokia, Nortel, Siemens and ZTE.

Voice Processing
The RDT-8v supports G.711 A-law encoding. To preserve bandwidth, the RDT-8v also supports G.726 (32 Kbps) and G.729a (8 Kbps) vocoding. For home office and small business services, the RDT-8v automatically detects fax and modem signals. In addition, the RDT-8v provides dynamic jitter buffers, adaptive echo cancellation, packet loss concealment and Diffserv packet prioritization to support high quality voice communications under the most demanding IP network conditions.

Security
To prevent eavesdropping, theft of service, and malicious call disconnects, the RDT-8v supports the PacketCable Security specification. The RDT-8v enables a secure network deployment through the use of IPsec, HMAC and AES to authenticate and encrypt signaling and bearer traffic.

Reliability
Many features enable the RDT-8v to deliver the 99.999% systems-availability required in local exchange applications. The RDT-8v is NEBS certified. All common logic resources are 1+1 redundant and hot swappable. Power supplies and fans are redundant and hot swappable. In addition, RDT-8v capacity can be increased and software can be upgraded without interrupting calls while the gateway is in service.

Investment Protection
As broadband network operators deploy softswitch-based services, network operators can convert the RDT-8v to an IPCablecom media gateway. New operating software enables softswitch or media gateway controllers to control the gateway.

Management
Each RDT-8v contains an integrated SNMP agent for monitoring and control. The gateway supports SNMPv2. The NueraView element management system and the Nuera Configurator tool provide graphical user interfaces to simplify the management processes.