Hello,
I received feedback that dialing in to our conference calls is a problem from some countries, either as the number is busy all of the time, or as there is no direct dial-in.
As noted previously, the Skype gateway has limitations. We're currently investigating in improving it, but we cannot promise anything right now. You know, proprietary software... 
What I would like to ask all of you is to send feedback if you have problems with dialing in, so we can evaluate the problematic numbers, or take care of getting local dial-in numbers.
So far I know about issues with the UK and Slovenian numbers, and about a missing number in India.
Thanks,
Florian