Web, PSTN and WhatsApp calling, IVR, recording and programmable voice — self-hosted on your own infrastructure. No per-minute lock-in, no black box.
View on GitHubPowering call infrastructure for modern teams
ZerodhaOne command spins up Tring on AWS, GCP or bare metal. Bring your own SIP trunks and numbers.
Place web calls with the JS SDK or drive PSTN flows with a REST API and visual IVR builder.
Recordings, logs and analytics stay in your VPC. Scale to millions of minutes at flat cost.
Browser-native WebRTC calling with a drop-in softphone widget and full call controls.
Connect any carrier or SIP trunk. Inbound and outbound phone calls worldwide.
Take and place WhatsApp Business voice calls over SIP, through the same IVR, queues and recording.
Script call flows in code or a visual IVR builder — routing, queues, callbacks.
Automatic recording of every call, stored entirely in your own bucket.
Live dashboards for call volume, quality and agent performance — no data leaves your VPC.
AGPL-licensed, no vendor lock-in. Audit every line and run it on infrastructure you control.