By invitation
Sariphone
Our enterprise PBX: multi-tenant phone system, AI voice and analytics on every call.
Built on Rust and FreeSWITCH, on dedicated infrastructure. Operations-grade observability: our own metrics, logs and alerts, with balance and quota probes for every AI provider — the system warns before it goes silent.
- ★AI receptionist, in production — handles Spanish, English and German, replies in about 600 ms and lets you cut in mid-sentence, with echo cancellation. Sessions start in 57 ms to first audio.
- •Analytics on every call — separate-channel recording, transcription, summary, sentiment analysis and quality scoring against weighted criteria. On more than 200 real calls, recorded, transcribed and scored (as of September 2026).
- •Multi-provider engine with failover — speech recognition, language model and speech synthesis from different vendors, failing over automatically when the primary takes longer than 450 ms. No single point of failure.
- •Multi-tenant phone system, in production — extensions, automatic phone provisioning and reseller white-label, at a telecoms operator in the United States, where it already carries virtually the whole operation.