Cisco的TMS如何添加三方终端比如Yealink的VC800，是否有开放的文档或者接口实现方案，实现三方终端获取phonebook信息。谢谢

Hi,We have a TMS platform and some cisco endponits. We have got some new Yealink endponits VC800, but we don't know how to make VC800 get phonebook from Cisco TMS. Is there any documents or API for third party endpoints about how can third party endp...