Skype have opened their beta program up to all comers.
   http://www.skype.com/business/products/pbx-systems/sip/support-faqs/#paddedContent

Three lines in a sip_profile make FreeSWITCH talk nicely; but using the
PCMU codec.  

Any progress on SILK native support? Last I saw was discussion back in
September with Brian lamenting that Skype was hard to work with on this.

I know I could use mod_skypiax; but having a native solution would be
one less IT headache.

Thx, Chris.