To Add a dedicated virtual phone number to your account, go to Manage Account and Click on Add Dedicated number
STEP 1: Select the country for which you want to have a virtual number
STEP 2: Now you can search either by Area code
STEP 3: Click on Buy link to add phone number to your account, verify monthly charges and Press Confirm Purchase
Once number is added to your account, you can use it with different campaigns. For most of the services the dedicated phone number should be selected from the campaign edit screen such as Email to Text Service, Text to Email, Auto Responder, Text to Win, etc.
Except for Outlook Text messaging, if you want to use your dedicated number as your sender ID, the phone number from which people will receive text message, you should follow steps given in the following article.