Avaya one-X Mobile is an application that mobile phone users can use to connect to the IP Office communications server. With this app, when your customer calls your office while you are out, the calls can be routed to your mobile phone. And when you make work calls from your mobile phone, it establishes a call to your company IP Office server, and then through to your customer. Use the Home screen to view a snapshot of your communications. For example, when you receive a new instant message, the Home screen displays a notification.