Hi Salman,
If you are using a 3rd party fax platform, then most of those have a fax-to-email and email-to-fax capability which can be used to distribute those faxes as standard ACD Email interactions to agent to handle.
Alternatively, if the 3rd party fax platform saves the faxes as a location accessible via a URL, then you could submit those faxes into Genesys Cloud and a Work Automation workitem interaction, assuming you have Work Automation enabled for your Genesys Cloud org.
I hope that gives you some ideas.
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Jim Crespino
Senior Director, Developer Evangelism
Genesys
https://developer.genesys.com------------------------------