It's a graphic of a router laying sideways with a picture of a phone on top of it. It has four dots on it's front face. Three of them are grouped to the left and the other is on the right. It has a symbolic wired connection coming out from underneath it.
Related to VOIP Icon
Related icons are the icons with matching tags, as well as all network icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors