Any other event fields, typed without widening to any.
OptionaldigitThe pressed DTMF digit (0-9, *, #) — present on websocket:dtmf events, at the top level.
OptionaldurationThe DTMF press duration in ms — present on websocket:dtmf events.
The event verb — e.g. 'websocket:connected', 'websocket:dtmf', 'close'.
One Vonage control event — a JSON text frame on the media leg (NOT audio; audio is raw binary). Vonage sends
websocket:connectedon open,websocket:dtmffor keypad input (withdigitat the TOP level, not nested), and a close event when the leg ends.