NetVanta Session Border Controller - upgrade license - 50 calls

The Session Border Controller is designed to provide superior Voice over IP interoperability to both service providers and enterprises. As service providers deliver IP services to the enterprise edge, businesses are adopting IP technologies for the premises. Designed to ease the need for extensive interoperability testing, SBC provides the tools necessary to normalize, secure and troubleshoot communications between a service provider's SIP trunk and a customer's SIP compliant equipment.