[SR-Users] Cannot hear voice with symmetric NAT and STUN

[Alex Balashov]

On 03/04/2013 05:43 AM, Mitan Lopez wrote:

> So RTP proxy servers are used most of the time in Internet to
> communicate between 2 UA's? (in this case why bother to check all those
> lines in kamailio cfg?)

Between two UAs that either (1) do not have network and transport-layer 
reachability to each other, such that an intermediate RTP relay is 
needed, because they cannot send RTP to each other directly through UDP 
or (2) between which topology hiding is desired.

Otherwise, no.

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Alex Balashov - Principal
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