Here's an article about new laptops with built-in VoIP:

Manufacturers plan to start selling notebooks with integrated Voice over Internet Protocol (VoIP) this year and plan later to offer notebooks with built-in cell phone capabilities, Anand Chandrasekher, vice president and general manager of the Intel Mobile Platforms Group, said in an interview. The phone module will also let people review incoming e-mail and calendar information while the notebook remains in sleep state. Thematically, these additional communications features are termed Extended Mobile Access (EMA).