Hello! I have 2 servers for test Fedora 28 and Centos 7. I compiled pjsip 2.8 on both of it and installed. Library working well on both of it but with small difference, initialization process on Fedora takes about 4-5 seconds however on Centos 7 it takes about 1 second before my program will be able to make first call. I mean following part of code ep.libStart(); Perhaps do you know what's problem in? -- Sincerely, Eugene Taradayko Senior DevOps and Infrastructure Engineer Intetics Inc. | http://www.intetics.com