IGEL OS Base System 12.2.2 Partner Solutions Current: Poly Headsets Supported by IGEL OS 12 PDF Download PDF Download page Poly Headsets Supported by IGEL OS 12. Current page All pages Poly Headsets Supported by IGEL OS 12 IGEL OS supports the following Poly (former Polycom/Plantronics) headsets; the headsets have been tested with Microsoft Teams in a Citrix session:Blackwire 5220Encorepro 320 ×