No matter where you are, have calls to your business landline number ring on your mobile at no extra charge.
How To Use The Vonage Extensions AppVonage Extensions lets you share your Vonage call plan with up to two smartphones, so you can make calls on your smartphone at no extra charge. Simply download the FREE Vonage Extensions app to your smartphone and enjoy unlimited calling on your mobile. Calls included in your call plan can be made from your smartphone. So you can make unlimited and inclusive international calls to up to 68 countries from your smartphone.