Let us talk about the Skype for Business 2015 Mediation server; keep in mind this can apply to Lync 2013 as well. One of the areas when talking about enterprise voice that will surely come up is “SIP Trunks”. So let’s jump straight into an area that can be very confusing when we start to talk about listening and sending ports for the Skype for Business server side regarding the port trunk configurations.
I will cover the following areas for the trunk configuration: