To conduct a multipoint document conference using a teleconferencing service provider, conference leaders need to call and reserve dates and time for the conferences. 利用遠程會(huì )議服務(wù)供應商來(lái)開(kāi)多點(diǎn)文檔會(huì )議,會(huì )議主持者需要打電話(huà)預定會(huì )議的日期和時(shí)間。