The format of new Skype meeting request is a little mangled, and I cannot see a way to correct it. For example, it shows the conference ID on the same line as the conference phone number (as well as below). I also added four additional conference numbers in the admin panel, but only the initiator's default number is displayed on the invite.
I have removed and readded the conference licence from the user but it made no difference. Any input is appreciated! I've changed the numbers, so the examples are not valid meetings.
Edit: Ah, I see that the conference ID by the number is for the benefit of softphones.