Hello! I'm facing a problem with encrypted rtp, because Deutsche Telekom relies on mediasec headers, which seems not to be implemented yet. Without mediasec headers, rtp encryption isn't possible at all. I already asked at asterisk-dev list (1) - you can find detailed information there. There I was finally pointed to pjsip. Therefore I'm kindly asking if it's possible to implement mediasec headers in pjsip. Thanks, kind regards, Michael (1) http://lists.digium.com/pipermail/asterisk-dev/2019-January/077170.html