Download this app if: you want to bundle international calls with your home service.
For Vonage US Customers:
As a Vonage Customer the Extensions app brings your home phone to your Android device. Download now and you can make and receive home phone calls on up to two phones over Wi-Fi or 3G/4G.
• Make calls from your Vonage home number on your Android device (New)
¡Ola! — If you're a keen Vonage user who wants to make international calls, these can now be bundled with your regular Vonage service.