Hello, All! I'm upset with PJSIP users guide documents. ONLY my hi-experienced colleagues help me. I can successfully made the video call. The correct answer: 1. Build PJSIP project. 2. Run PJSUA application. 3. Remove both default accounts: ->-a ->1//we remove first default account ->-a ->0//we remove second default account 4. Create NEW, my own account (for peer to peer call). The same for call throw Asterisk PBX. ->+a ->sip:6005 at 192.168.2.57:5060//SIP URL: ->sip:192.168.2.57:5060//URL of the register: ->6005//Auth Realm ->6005//Auth Username ->666//Auth Password 192.168.2.57 - it's my local IP 5. Change the video settings of account ->vid enable// turn on video for calls ->vid acc autorx on// turn on income video ->vid acc autotx on// turn on outcome video ->vid acc cap 1// set capture device for streaming video 6. Make peer-to-peer call. ->m ->sip:6002 at 192.168.2.122:5060 //another PC with PJSIP 192.168.2.57 - it's another PC's IP. Why info, mentioned above, doesn't present in "Getting started", nor in "Video_Users_Guide" documents? Not nice support. It's a pity.