# File lib/sms_on_rails/model_support/phone_number_associations.rb, line 4
      def self.included(base)
        base.send :has_many,   :outbounds, :class_name => 'SmsOnRails::Outbound',
               :foreign_key => 'sms_phone_number_id', :dependent => :delete_all
        base.send :belongs_to, :carrier, :class_name => 'SmsOnRails::PhoneCarrier',
               :foreign_key => :carrier_id
      end