affiliate-api/db/migrate/20170405123115_create_phone_configs.rb

class CreatePhoneConfigs < ActiveRecord::Migration[5.0]
  def change
    create_table :phone_configs do |t|
      t.string :extension
      t.string :phone_mac

      t.timestamps

      t.index :extension, unique: true
      t.index :phone_mac
    end
  end
end