When a client gets to know you by your specific extension, you would want to remain accessible to him at this extension no matter where you are. With traditional phone systems, your extension is fixed and physically wired to your office phone.
Telebroad's cloud PBX system, on the other hand, has the flexibility to assign your extension to any supported phone, personal computer, or mobile device based on IP addressing. All you have to do is login to the device where you want to use your extension(s) from and the system will automatically take care of the rest.