Sansay

Session Border Control

• VSXi VoIP Session Controller: Manages security, traffic, and session routing for service provider VoIP networks.
• Carrier Peering: Cuts interconnect costs by replacing TDM switches with scalable IP-based peer switching.
• Subscriber Access: Delivers voice services to business, residential, and wireless subscribers with full firewall protection.

Traffic & Routing Management

• Least Cost Routing (LCR): Optimizes bandwidth utilization to reduce costs across carrier interconnects.
• Proportional Routing: Distributes traffic intelligently across up to 32 alternate routes per session.
• CDR Generation & Radius Messaging: Tracks every call attempt for real-time performance monitoring and billing.

Network Security & Reliability

• DDoS Protection: Shields network topology and blocks distributed denial of service attacks at the border.
• High Availability Architecture: Fully redundant, fault-tolerant design sustains 99.999% uptime with hitless upgrades.
• NAT Traversal & Firewall: Protects feature servers and softswitches from unauthorized access and network exposure.

Sansay builds VoIP session control infrastructure that carriers and service providers worldwide trust in their production networks. Founded in June 2002, the company set out to deliver the highest quality VoIP infrastructure for the communications industry, and that focus has driven commercial deployments across more than 300 service providers globally.

The VSXi session controller sits at the core of Sansay's portfolio, handling security, traffic management, and session routing for wholesale, SIP trunking, and subscriber access environments. Sansay's senior leadership brings deep expertise from the mid-1990s, including founding roles at Nuera Communications, where they led end-to-end development of high-performance communications infrastructure.

Much of Sansay's growth comes from customer referrals and repeat business, a reflection of the company's commitment to product quality and hands-on support. Gartner recognized Sansay as a visionary SBC developer in its 2013 service provider SBC study.