Cradle will automatically select from your outbound numbers, to choose a number from the country you are calling. If you're calling the US, Canada, New Zealand, or Australia, Cradle will further select an area code match, or if not available the closest possible number match based on geography.
Your customers can ring you on local numbers at a local rate so they will not be charged international calling rates.
Using local numbers to call your customers increases the likely hood that they will answer by showing your caller a local number and increasing the likelihood that they'll pick up.