Reconnects your client to an active WhatsApp call, for example after a network drop or when switching devices.

Before you call

• Your organization needs a calling licence or add-on, and the API key's user needs permission to receive calls for the call.
• Send callId and callOriginType (INCOMING or OUTGOING), matching the call's direction.
• The call must be in progress, and you must be the user on it.
• sdp and deviceId are optional; set switchCall to true to move the call to a new deviceId.

How it works

• Rebuilds the media session and returns a new SDP in data for your peer connection, plus callStartedAt.
• Without switchCall, a call already connected to a different device returns 409.
• Returns 422 if the call is not found, not in progress, its number is disconnected, or the direction does not match.
• Browser (WebRTC) calls only: other calls return 400 Calling is not supported on this number.

Rate limit

• 60 requests per minute.