Universal Management Suite 12.01 UMS Articles IGEL UMS Communication Ports UMS and Devices: Settings and Control Current: Devices Contacting UMS PDF Download PDF Download page Devices Contacting UMS. Current page All pages Devices Contacting UMS The following figures illustrate the communication between the endpoint devices and the UMS.IGEL OS 12To communicate with the UMS, the devices initiate a TCP connection to the UMS Server using port 8443. IGEL OS 11 or EarlierTo communicate with the UMS, the devices initiate a TCP connection to the UMS Server using port 30001. ×