请问大虾们：
手机上，message setting 中，reply path设定是干吗用的？
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什么平台，是MTK么？
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3.2.10 Reply Path
Reply Path specified in the present document provides a way of both requesting and indicating a service centre’s
commitment to deliver a reply from the replying MS to the originating SME.
Annex D deals with MS procedures, which in general are outside the scope of GSM/UMTS specifications. However,
for advanced use of the SMS, including both application level protocols and human responses, it is of vital importance
to guarantee that a reply-supporting MS is able to reply on every SM, to every SME capable of receiving such reply
short messages.
回复路径（Reply Path）：移动电话可循发送SMS消息的短消息中心进行回复（但并非所有SMSC都会这样设置）。