Hi Mike,
By creating a Skype Manager account, you can then manage to set up Skype Connect. By using Skype business accounts associated with your SIP-enabled PBX, your business can make great value Skype calls and receive calls from your customers using your desk phones.
However, before getting Skype Connect, make sure you meet the requirements. We recommend that you use a Skype Connect certified PBX or gateway. Although a non-certified PBX may work with Skype Connect, we cannot ensure all features and functions will operate correctly.
Current list of Skype Connect certified SIP-enabled PBX vendors:
https://www.skype.com/en/features/skype-connect/
System requirements your PBX needs to support:
https://support.skype.com/en/faq/FA10550/what-a...
I hope this helps.
Please do not hesitate to send me a message if you have further questions. Glad to help!