provider: "twilio", // or "telnyx" | "plivo" | "mock"

fromNumber: "+15550001234", // or TWILIO_FROM_NUMBER for Twilio

toNumber: "+15550005678",

sessionScope: "per-phone", // per-phone | per-call

twilio: {

accountSid: "ACxxxxxxxx",

</Accordion>

</AccordionGroup>

## Session scope

By default, Voice Call uses `sessionScope: "per-phone"` so repeat calls from

the same caller keep conversation memory. Set `sessionScope: "per-call"` when

each carrier call should start with fresh context, for example reception,

booking, IVR, or Google Meet bridge flows where the same phone number may

represent different meetings.

## Realtime voice conversations

`realtime` selects a full-duplex realtime voice provider for live call

- Voice Call exposes the shared `openclaw_agent_consult` realtime tool by default. The realtime model can call it when the caller asks for deeper reasoning, current information, or normal OpenClaw tools.

- `realtime.fastContext.enabled` is default-off. When enabled, Voice Call first searches indexed memory/session context for the consult question and returns those snippets to the realtime model within `realtime.fastContext.timeoutMs` before falling back to the full consult agent only if `realtime.fastContext.fallbackToConsult` is true.

- If `realtime.provider` points at an unregistered provider, or no realtime voice provider is registered at all, Voice Call logs a warning and skips realtime media instead of failing the whole plugin.

- Consult session keys reuse the existing voice session when available, then fall back to the caller/callee phone number so follow-up consult calls keep context during the call.

- Consult session keys reuse the stored call session when available, then fall back to the configured `sessionScope` (`per-phone` by default, or `per-call` for isolated calls).

### Tool policy