Endpoint Management 5.08 UMS Articles 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 To communicate with the UMS, the devices initiate a TCP connection to the UMS server using port 30001.The following figure illustrates the communication between the devices (thin clients) and the UMS: ×