17 Aug
2020
17 Aug
'20
9:33 a.m.
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!