NEXCOM offers reliable communication appliance, OSA 5130, which is a compact, highly reliable security and session management platform for mobile and fixed VoIP networks. The flexible and standards-based platform supports both access and interconnect applications in a unique, fully redundant single rack unit (1U) chassis. By effectively protecting existing interconnect and access network infrastructure and itself, the platform helps to ensure VoIP services are continuously available, while performance is unaffected by outside attack.