Greetings from Capanicus!
As you can see in our profile that we are mainly WebRTC/Kurento/Jitsi, VoIP, Tokbox, XMPP experts and have vast experience in call, chat, audio, video, conference applications. We have used wThêm
I am glad you posted your job here. Please allow me to help you with your job as I am an experienced engineer with Asterisk knowledge. I develop solutions for my clients on Asterisk for Telephony services.