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Yeti Switch

Open-source SIP Session Border Controller, softswitch and real-time VoIP billing system

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Yeti Switch is an open-source SIP Class 4 Session Border Controller, softswitch, and VoIP billing system built on the SEMS SIP/RTP stack. It provides a unified platform for interconnection with telecom carriers, handling call control alongside real-time billing for wholesale transit and prepaid or postpaid retail services.

Core capabilities include intelligent routing with least-cost routing, load and capacity control, number portability database support, and STIR/SHAKEN call authentication and attestation. It can operate as a Direct Routing SBC for Microsoft Teams. Configuration and provisioning are handled through a comprehensive REST API, which also powers a single-page customer portal.

The platform targets telecom carriers and service providers managing interconnection and VoIP billing. It is offered as open-source software, with a demo available for evaluation.

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