Per Avaya: RTCP/VoIP monitoring is supported in Workplace. If it is remote worker, these RTCP packets needs to be monitored at switch level. They are adding RTCP subtype 5 packet tagging in Workplace 3.39 release. https://documentation.avaya.com/bundle/Planning_Administering_Avaya_IX_Workplace_Client_Android_iOS_Mac_Windows/page/Enabling_VoIP_Monitoring_in_Avaya_Aura_System_Manager.html