Does Genesys Cloud support RFC 4028?

Genesys Cloud supports RFC 4028. It will perform Session Refreshes using the UPDATE method if requested by an external SIP entity, and it will accept Session Refreshes using INVITE or UPDATE if the external party sends them. However, Genesys Cloud will not request Session Refreshes on any call; if they are desired the external party must perform them or must request Genesys Cloud to do so.