March 2026 monthly summary: Core achievement is cross-repo SIP domain customization. Features delivered: livekit/protocol: Custom domain support for SIP calls with new header for custom domain/hostname, hostname validation, and data-model updates; commits 8d130a7700dc35dea158a494520d083ab422f7f8 (TEL-405: support originating calls from custom domains, #1440). livekit/livekit: Custom Domain Call Originating Support in SIP using the FromHost field from trunk or request to enable integration of custom-domain functionality into the SIP service; commit cb7dc2d02a9c091aabba210ec9c283b8635fc961 (TEL-405: support originating calls from custom domains, #4349). Related TEL-405 tickets: #1440, #4349. Business value: enables customers to originate outbound calls from their own domains, improving branding, routing accuracy, and integration with customer environments. Overall impact: feature parity across protocol and SIP service, reduced onboarding friction, and a more flexible, extensible SIP platform. Technologies/skills demonstrated: SIP protocol enhancements, header design and validation, FromHost handling, hostname validation, data-model updates, cross-repo collaboration, and explicit commit-based traceability.

February 2026: Delivered RTP Streaming Monitoring and Statistics Enhancement for livekit/sip, focusing on observability and reliability. Key deliverables include improved MTU overflow logging (log once per event), aggregated input packet processing stats, and jitter buffer statistics with error-path metrics to enhance monitoring and debugging. Major bug fixes include ensuring MTU overflow is logged only once and updating packets_input statistics after successful HandleRTP, reducing log noise and improving metric accuracy. Overall impact: stronger observability, faster issue diagnosis, and higher data quality for SLA reporting. Technical achievements include instrumentation enhancements, metrics collection, and robust RTP streaming path handling.