回复：Rynga 拨通后无回音，对方能听到，求助帮忙！

来源: flauto 于 2013-02-07 19:20:17 [] [旧帖] [给我悄悄话] 阅读数 : (133 bytes)

That is because sip uses udp 5060 port as connection and 10000-20000 as rtp ports. you need to make sure those ports are open.

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