Biggest thing to remember is that Genesys Cloud only does t.30 or G.711 faxing, so there is no backup channel like t.38 provides. Essentially, it is a G.711 phone call and ANY disruption can cause errors. If you are getting that much through - congratulations. I don't know of any real limits except if you have limits on call length on the trunk/carrier. Also, with G.711, the receiving fax might have to have a large enough buffer to accept the entire fax before it starts printing. I usually avoid GC for any real fax functions.
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Robert Wakefield-Carl
Avtex Solutions, LLC
Contact Center Innovation Architect
robertwc@avtex.comhttps://www.Avtex.comhttps://RobertWC.Blogspot.com------------------------------