通过这些基本设置，就可以让400电话最大限度的发挥其基本作用。当然400电话还有其它的附加功能，比如企业彩铃、IVR导航、通话录音、客服评价等，虽然企业并不需要将每一个附加功能应用，但是合理利用这些功能才可以将400电话的优势发挥到最大。
Through these basic settings, 400 telephones can play their basic role to the maximum. Of course, 400 telephones have other additional functions, such as enterprise color ring tone, IVR navigation, voice recording, customer service evaluation, etc. Although the enterprise does not need to apply every additional function, but the rational use of these functions can maximize the advantages of 400 telephones.