[SR-Users] Decrypting SRTP with Kamailio + rtpengine

[Ildar Mukhametzhanov]

Hello!

Decrypting SRTP with Kamailio + rtpengine.
Hello! I have a task to decrypt SRTP for a legacy switch which doesn’t support it.
Simply adding rtpengine_manage("RTP/AVP") didn’t help. SDP converted from SRTP to RTP while proxying INVITE to legacy switch, but 180 Ringing wasn’t converted back to SRTP.
Little more detailed config snippet:

route[RELAY] {
	...
	if (is_method("INVITE")) {

		if ($rd=~$var(switch_ip_mask)) {
			rtpengine_manage("RTP/AVP");
		} else {
			rtpengine_manage();
		}
	...
	}

Could someone please advise typical scenarios to achieve it, I suppose the task is pretty standard.

Thank you in advance!


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