Calls
Pre-accept call (optional)
Sends the SDP answer early (before accept) to reduce audio clipping at call start. OPTIONAL — the call only connects on accept. Body: { sdp, sdpType?:"answer" }. {callId} accepts id or wacid. Meta numbers only (a signaling concept; web numbers → 400 FEATURE_NOT_SUPPORTED).
**Requires a number-scoped key.**
POST
Pre-accept call (optional)