Metered international calling is available to all 8x8 Virtual Office customers, though Unlimited and Global extension plans include free calls to landlines in select countries. For more information, see 8x8′s International Calling page.
For calls to International countries from the UK dial: 00 + country code + phone number
For additional guidelines on dialing specific international destinations, please see HowToCallAbroad.com.
Problems dialing internationally?
Check with your 8x8 system administrator to ensure that international dialing is enabled for your extension. For more information, see Why can't I make International calls?