Welcome to Full Service Network's Mobile Application. FSN 2GO is a system which associates your cell phone with your desktop business phone or cloud extension. The application allows you to mimic features and presence, as if seated at your desk phone. These features include: Placing and receiving calls using your extension within your business group, dial other extensions within your business group with ease, call forwarding management, visual voicemail access to your extension's voicemail, and call "jumping" which allows you to transfer a call between your cell and extension seamlessly.