***

id: c1e01262-c624-47f0-afe4-2bc90b9690bd
title: online
slug: /js/reference/signalwire/client/online
description: online method for the SignalWire Client.
max-toc-depth: 3
----------------

### online

* **online**(`options`): `Promise<Call>`

Set the client to be online so it can receive call invites via WebRTC. The call invites can be accepted or rejected as per user input.

#### Parameters

<ParamField path="options" type="object" required={true}>
  Options object
</ParamField>

<Indent>
  <ParamField path="options.incomingCallHandlers" type="IncomingCallHandlers">
    Callback functions for when a call is received. See [IncomingCallHandlers](/docs/browser-sdk/v3/js/reference/signalwire/client#incomingcallhandlers).
  </ParamField>
</Indent>

#### Example

```javascript
// Receive calls using websocket notifications
client.online({
  incomingCallHandlers: {
    all: __incomingCallHandler,
  },
});

// Function to handle the incoming call notification and stores the invite
window.__incomingCallHandler = (notification) => {
  if (
    !window.__invite ||
    window.__invite.details.callID !== notification.invite.details.callID
  ) {
    // Store call invite
    window.__invite = notification.invite;
  }

  // Trigger UI update here to convey the ringing state
};

// Function to answer the call
window.answer = async () => {
  // Accept the call invite
  const call = await window.__invite.accept({
    rootElement: document.getElementById("rootElement"),
  });

  // Trigger UI update here to convey the connected state
};

// Function to reject the call
window.reject = async () => {
  await window.__invite.reject();

  // Trigger UI update here to convey the ready state
};
```