gTalk® PBX service offers a smart-phone app (application to do a number of useful functions at no additional cost). The app extends reach of your gTalk® PBX to anywhere through the Internet. So irrespective of geographic location gTalk® app allows your employees to remain within company's PBX network, as if he/she were in office. Your company can avoid expensive roaming charges it currently incurs for having your traveling employees remain in communications with your office. The app as usual of