Universal Management Suite 12.04 UMS Articles IGEL UMS Communication Ports UMS and Devices: Settings and Control Current: UMS Contacting Devices PDF Download PDF Download page UMS Contacting Devices. Current page All pages UMS Contacting Devices IGEL OS 12For IGEL OS 12 devices, no additional channel is opened. An existing WebSocket (TCP 8443) is used.IGEL OS 11 or EarlierTo communicate with IGEL OS 11 devices, the UMS initiates a TCP connection to the device's UMS agent using port 30005.The following figure illustrates the communication between the UMS and the devices: ×