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<DIV>are they playing the same role in NAT traversal?</DIV>
<DIV>that means I can only choose one of them?</DIV>
<DIV>or there is some difference between them?</DIV>
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<DIV>i saw nathelper + rtpproxy,</DIV>
<DIV>there is also nathelper + mediaproxy and nat_traversal + mediaproxy.</DIV>
<DIV>which pair is more suitable for symmetric NAT traversal?</DIV>
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<DIV style="PADDING-BOTTOM: 0px; WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; MARGIN: 0px; PADDING-LEFT: 0px; LETTER-SPACING: normal; PADDING-RIGHT: 0px; FONT: 12px/25px verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; COLOR: rgb(0,0,0); WORD-SPACING: 0px; PADDING-TOP: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"><I><B style="FONT-FAMILY: ΢ÈíÑźÚ">Mike To</B></I></DIV></SPAN></DIV></DIV>