Calling Card is another option
posted by Prithvi Desai in United Kingdom forum
The cheapest option for making international calling without using internet would be through a calling card. The disposable calling cards require no prior registration and usually provide 200 to 300 minutes for just a couple of pounds. They are commonly available at any local store and may vary with different country rate options. Choose the one which is best suited to the country where you are looking to make most of your calls to.