This is the test Sid from your test account credentials

This is a test phone numbers from the list of magic numbers here. It is required if AreaCode is not passed.

This is the URL that we should call to answer a call to the new phone number.

This is the desired area code from which a new incoming phone number will be provisioned. It must be a code from the list of test codes here. It is required if PhoneNumber is not passed.

This is a text that describes the new phone number. It can be up to 64 characters long. By default, this is a formatted version of the new phone number.