SMS alert integration

Hi Guys,

Any one knows how to integrate SMS ( text-message )alert and communication for BD theme. When a visitor responds to a listing I wish an SMS alert can be forward to the author. I see there is API fields for https://www.nexmo.com/ are built into the theme in Email communication set up page. I got the codes from Nexmo on trial and typed in the information. But the help videos do not dwell on this topic.

I want to figure out how a visitor can send his response to the listing as a Text.

Appreciate your help.

Thanks and regards,