Hi Stefan, On 01/14/2011 01:26 AM, Stefan Sayer wrote: > In passive mode, the remote RTP address:port is learned by the first > received packet. After the first packet is received, passive mode is > switched off.
Does that mean that SEMS won't send any packets to a side until one is received from it? If so, that will probably break scenarios where T.38 is used from the beginning. We've seen some implementations where a T.38 endpoint won't send any packet until it receives at least one. We solved this (in our rtp proxy) by sending packets to the address announced in the SDP, then updating that information once a packet is received from that side. It still won't work with such T.38 clients behind NAT, but it'll do its job in some scenarios. Andreas
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