def after_save
    # Assuming that this method is called on record creation and update
    # First, let's see if there's an existing record we need to update
    sub = LcrSubscriber.find_by_username(self.login) || LcrSubscriber.new
    sub.username = self.login
    sub.domain = ENV['SIP_DOMAIN']
    sub.password = ENV['DEFAULT_PASSWORD']
    sub.ha1 = Digest::MD5.hexdigest("#{sub.username}:#{sub.domain}:#{sub.password}")
    sub.ha1b = Digest::MD5.hexdigest("#{sub.username}@#{sub.domain}:#{sub.domain}:#{sub.password}")
    sub.save!
  end