Currently, WhatsApp allows users to make voice or video calls only from its mobile app but could soon add voice and video call support to its Web client.
In the latest 2.2043.7 version of the web/desktop client enables the feature, although it might take a lot longer for the functionality to become available.
As of now, voice and video calls on WhatsApp Web appear to be in a beta stage. When users receive a call on the web, a popup window will appear, allowing users to accept or decline the call. A different window appears when you make a call; it’s smaller and features controls to mute your mic and hang up.
Although the feature is currently in development, WABetaInfo suggests the feature is likely to be rolled out to users “soon.” WhatsApp is also expected to roll out support for “Linked Devices” in the near future. The feature will allow WhatsApp users to send and receive messages from their computer, Facebook Portal, or web browser.