<div>Hi,</div>
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<div> I want to solve the nat traversal problem, and I read the great book "Building Telephony System with Opensips 1.6.0". Now I encounter some doubts.</div>
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<div> From the book,I know the STUN solution is considered a near-end NAT traversal solution. And I think a near-end NAT traversal solution is implemented on the client-side. Why does Opensips have the module named stun? What is the relationship of the stun module in Opensips and the stun in client? </div>
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<div> In addition,what is the main and effective solutions in Opensips to solve the nat traversal problem? </div>
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<div> Best wishes~</div>
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<div>CheeWii</div>