Terminology

Term	Meaning
Organization	Tenant and ownership boundary for customers and their resources.
Organization credential	Scoped bearer token used by a server-to-server API client.
Voice Agent	AI-backed call configuration with instructions, engine selection, policies, and provider bindings.
Composable engine	Uses separate STT, LLM, and TTS provider roles.
Realtime engine	Uses one end-to-end realtime provider role.
AI integration	Organization-owned provider credential, including verification status.
Agent tool	Permitted action exposed to an agent, with execution validation and policy.
SIP trunk	Organization-owned SIP connectivity and authentication root.
Trunk endpoint	Remote SIP destination associated with a trunk.
Number	Existing BYOC phone number assigned to an organization and optionally a trunk.
Call	Durable inbound or outbound voice resource.
BYOC	Bring your own carrier; you own the telecom-provider relationship.
BYOA	Bring your own AI; you supply your organization’s AI provider credentials.
Leamout	Carrier-grade runtime and control plane for autonomous voice agents.