- In Contacts, on the Actions menu, point to Call Contact, and then click New Call.
- Click Dialing Options.
- Select the Automatically add country/region code to local phone numbers check box.
The country/region code added is for the selection in the Country/region list on the General tab of the Edit Location dialog box (in the New Call dialog box, click Dialing Properties, and then click Edit).
Note If the Automatically add country/region code to local phone numbers check box is not available, Microsoft Outlook doesn't recognize the phone number format for the specified country code and cannot automatically format phone numbers.