AsyncAPI channel · Vonage · Vonage Voice WebSocket API

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The single bidirectional WebSocket channel established by Vonage to the customer-hosted server for the duration of the call leg. Carries both binary linear-PCM audio frames and JSON text control/event frames in each direction.

Open source AsyncAPI → All Vonage channels Vonage provider profile
Provider: Vonage AsyncAPI: v2.6.0 Spec: Vonage Voice WebSocket API Operations: 2 Messages: 7

Channel address

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Operations

publish
sendToVonage
Frames sent by the customer WebSocket server to Vonage.
receiveFromVonage
Frames sent by Vonage to the customer WebSocket server.

Messages

OutboundAudioFrame
Binary WebSocket frame carrying linear-PCM audio to play to the caller.
Content-Type: audio/l16
ClearCommand
Instructs Vonage to immediately stop playback and discard queued audio.
Content-Type:
NotifyCommand
Requests a notification when previously-queued audio has finished playing.
Content-Type:
InboundAudioFrame
Binary WebSocket frame carrying linear-PCM audio from the caller.
Content-Type: audio/l16
WebsocketConnectedEvent
Sent by Vonage immediately after the WebSocket handshake completes.
Content-Type:
WebsocketClearedEvent
Acknowledgement that a `clear` command emptied the playback buffer.
Content-Type:
WebsocketNotifyEvent
Notification that a previously-queued audio buffer has finished playing.
Content-Type:

About AsyncAPI

The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.

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