Call flip or call pulling is an advanced calling feature in VoIP business phone systems to transfer an ongoing call from one device to another without interrupting the conversation. It enables you to flip calls between devices like desk phones, mobile phones, and computers and continue the conversation no matter where you are.For instance, when you have to step away from your computer or leave the office in the middle of a call, you can transfer an in-progress call from your computer or desk phone to your smartphone without putting the caller on hold.For this feature to work, the devices you switch the call from and to must be part of the same VoIP system. Configure the call flip feature on your phone system, and you can switch calls between all connected devices at the tap of a button.