??????????
????????
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?????????绰/VOIP???
?????绰????
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???/IP????绰
???/IP?????绰
???/IP????????绰
SIP???????????绰
SOS???????????
????????????绰??
?????????
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?????
???????硢???????
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??????: YT-600S
F600S??????????????????????????????????????Android 9.0??????????????Android ??????????????????????????7?????????????????USB 2.0?????TF???????HDMI???????????????????????????????????????????а?????漶?????????????
????:????绰????????
????:IP?????????????
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