Yes, you can choose any number you legally own as your outgoing caller ID with sipgate basic.
You can also choose to display your sipgate phone number or to call anonymously. By default your sipgate-provided phone number will be displayed.
Any chosen non-sipgate phone number will be transmitted alongside your sipgate phone number. Most telephones will only display the chosen phone number.
Emergency services, law enforcement agencies and government services, as well as businesses and private customers with the necessary telephony equipment will still be able to see your original sipgate phone number.
sipgate and the provider of the called-to phone number, as well as any telephony network in the communication path will be able to see your original sipgate phone number.