Vonage customers who currently make free international calls based on their calling plans can do the same form their cell phones.
All you have to do is –
> Go to your Vonage account
> Click on features tab
> Look for Extensions
> Enter your cell Phone number and choose pin, click save
> Note the 10 digit number that comes up on the popup. Save this number in your Cell Phone
> Call saved 10 digit number from your cell phone and enter pin
> Enter the international number – 01191….
Easy and convenient on the go international calling ..