Before you launch your Voice campaign, you will need to assign a caller ID (i.e. a telephone number) to your voice template.
To assign a caller ID:
- Click on the settings cog on the green settings module on the canvas
- Select a pre-purchased number from the drop down list or click Buy new number and follow the prompts to purchase a new number (for more information see Do I need to buy a number to make and receive voice calls?)