If you want to us the XCALLY Phone bar API with https support, you need to install proper SSL certificates in each Windows machine of your contact center agents.
This is a general guideline, not official and not fully comprensive, just to help you in accomplish it.
Please refer to your IT manager and system administrator to properly install your SSL certificates.
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Use the Phone bar minimum version 3.7.2.16
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If everything goes smooth, you can now call the phone bar API with https, using the new port
For example:
Perform a Call (originate):
https://localhost:9443/xcally/svc/originate/phonenumber
https://localhost:9443/xcally/svc/originate/xml/phonenumber
etc... etc...