Hi, Every one. To make call to another one with no encryption. But i can't setup to make call using TLS and sRTP. I had done as https://trac.pjsip.org/repos/wiki/TLS. And then i had input below command. $ pjsua --registrar=sip:192.168.1.11:5060 --id=sip:1024 at 192.168.1.11:5060 --username=1024 --password=1024 --realm=* --use-tls --use-srtp=1 ...................................... You have 0 active call >>> m (You currently have 0 calls) Buddy list: -none- Choices: 0 For current dialog. -1 All 0 buddies in buddy list [1 - 0] Select from buddy list URL An URL <Enter> Empty input (or 'q') to cancel Make call: sip:1030 at 192.168.1.11:5061;transport=tls >>> 15:56:20.337 tlsc0x9524f9c TLS connect() error: Connection reset by peer [code=120104] 15:56:20.337 pjsua_app.c SIP tls transport is disconnected from [192.168.1.11:5061]: Connection reset by peer [status=120104] and then There is not any message on the wireshark. -- ??? ????.