Hello,
I`m WiCom LTD ISP representative. We have big experience working with mikrotiks and also can help you to configure your own. Please contact if you`re interested.
I'm a voip expert, not a router expert. Generally when someone asks for something like this they already know more than they claim to know (the basics of the router) and just need help on what's needed to get voip trunks working properly. Assuming you have someone that originally setup the router there, I will go through it with that person to setup the QOS so that VOiP has the most bandwidth / priority. I like using TEAMVIEWER (version 9) to remotely access your site to get all this up and running properly.
Good experinece in Asterisk programming,modules,SIP signalling,RTP,SRTP,WebRTC,codecs,AGI,IVR,ACD,configurations,dialplans,installation and setup.
Good trouble shooting in SIP signaling and call quality issues, monitoring and development.