#Voice Infrastructure Platform — documentation

Add calling to your CRM through one REST API. We run the telephony (FreeSWITCH, call control, recordings, webhooks); you bring your own carrier account (Telnyx, Twilio or any SIP trunk) and keep paying the carrier directly. Switching carriers is a configuration change: nothing in your integration refers to a carrier.

#What you can build

Softphone in the CRM — browser softphone (@voice/softphone) with short-lived credentials.
Click-to-call — the agent's phone rings, then the customer is dialed and connected.
Inbound routing — to an agent, a ring group, voicemail, or decided by your CRM per call.
Call log — every call with CDR, full event timeline, recordings (signed URLs), CSV export.
Numbers — search, order, regulatory documents, release — where the carrier supports it.
Events — signed webhooks with retries and replay, plus a live SSE/WebSocket stream.

#Concepts

Concept	What it is
Workspace	Your account: limits (agents, concurrency, destinations, spend guard) and settings (recording).
Carrier	A connected carrier account. Has `capabilities` (what its API supports) and `health`.
Number	A DID owned by one carrier. Outbound calls use the carrier of the caller ID number.
Agent	A SIP account `agent_{agent_ref}` for one CRM user; browsers get expiring credentials.
Inbound rule	Where calls to a number go. Ring groups ring several agents.
Call	One conversation with a timeline of events; ends with a CDR (`call.ended`).
Event	Normalized notification (`call.answered`, `recording.ready`, …) delivered by webhook/stream.

#Start here

Quickstart (sandbox) — everything runs locally with a simulated carrier.
Integration guide for AI agents — the ordered checklist.
API conventions, recipes, events, errors.
Reference: /openapi.yaml (OpenAPI 3.1 with examples), /llms.txt, /llms-full.txt.

Operator documentation (not needed to integrate): operations, production deployment, security checklist, load test, adding a carrier, FreeSWITCH internals.