> For a complete documentation index, fetch https://docs.voximplant.ai/llms.txt

# Participant

## Methods

### addEventListener

Adds a handler for the specified [CCAI.Events.Participant](/api-reference/voxengine/ccai/events/participant) event. Use only functions as handlers; anything except a function leads to an error and scenario termination when a handler is called.

```ts
addEventListener(event: CCAI.Events.Participant | T, callback: (event: CCAI.Events._ParticipantEvents[T]) => any): void
```

**Parameters**

**`event`** `CCAI.Events.Participant | T` — required

---

**`callback`** `(event: CCAI.Events._ParticipantEvents[T]) => any` — required

---

### addPlaybackMarker

Adds a Dialogflow speech synthesis playback marker. The `CCAI.Events.Participant.MarkerReached` event is triggered when the marker is reached.

```ts
addPlaybackMarker(offset: number, playbackId?: string): void
```

**Parameters**

**`offset`** `number` — required

---

**`playbackId`** `string`

---

### analyzeContent

Adds a message from a participant into the Dialogflow CCAI.

```ts
analyzeContent(query: CCAI.Vendor.EventInput | CCAI.Vendor.TextInput): void
```

**Parameters**

**`query`** `CCAI.Vendor.EventInput | CCAI.Vendor.TextInput` — required

---

### call

Returns the call associated with the participant.

```ts
call(): Call
```

### id

Returns the participant's id.

```ts
id(): string
```

### removeEventListener

Removes a handler for the specified [CCAI.Events.Participant](/api-reference/voxengine/ccai/events/participant) event.

```ts
removeEventListener(event: CCAI.Events.Participant | T, callback?: (event: CCAI.Events._ParticipantEvents[T]) => any): void
```

**Parameters**

**`event`** `CCAI.Events.Participant | T` — required

---

**`callback`** `(event: CCAI.Events._ParticipantEvents[T]) => any`

---

### sendMediaTo

Starts sending media (voice) from the Dialogflow participant to the media unit.

```ts
sendMediaTo(mediaUnit: VoxMediaUnit, parameters?: SendMediaParameters): void
```

**Parameters**

**`mediaUnit`** `VoxMediaUnit` — required

---

**`parameters`** `SendMediaParameters`

---

### stopMediaTo

Stops sending voice from the Dialogflow participant to the media unit.

```ts
stopMediaTo(mediaUnit: VoxMediaUnit): void
```

**Parameters**

**`mediaUnit`** `VoxMediaUnit` — required

---

> Represents a CCAI participant instance.