Remote desktop is a multi-channel protocol, allows users to the client even Microsoft terminal services on a computer, most of the WINDOWS are needed by the client software, other operating systems also have the client software, server computers, then listen to the data sent to the TCP port 3389, cloud terminal according to their respective use remote desktop connected to the server side,

According to the connection protocol used by different can be divided it into four categories:

1, the use of computers in the thin agreement, Microsoft RDP remote desktop protocol (VDP) - support managers can remote control a computer to solve the problem of tools, such as the current domestic tsinghua tongfang cloud terminal, shenzhen or custom of OEM brand industrial computer terminals, are all in this agreement,

2, it cloud terminal protocol UXP similar to Microsoft RDP (VDP) or Citrix ICA, the configuration of legitimate software vSpace using it on its own design and development of privatisation deal UXP commune with access hardware and vSpace software installation authorization is free, but for each access devices, vSpace requires mandatory online activation, in order to avoid the third party access hardware manufacturers use vSpace function, UXP don't enable Microsoft RDP function, can realize remote desktop virtual functions,

3, support Citrix ICA protocol, based on the Citrix ICA application server computing system benefits include centralized application software installation, reduce IT in terms of management and support costs and deployment of new or updated solutions; With optimization using computer hardware and network resources, protect the upfront investment; Faster, more predictable distribution of application software, without considering the network bandwidth, at present there are HP, foreign domestic such as rising thin clients are running this deal,

4, walk the PCOIP protocol, and Teradici PCOIP by VMware common development, through the PCOIP protocol which enhances the functionality of desktop virtualization and performance, such as foreign HP, domestic have rise, OEM version of the mini thin client, PCOIP biggest characteristic is that the user's session is compressed in the form of image transmission, for the user's operation, transmission change parts, only guaranteed under the low bandwidth can be efficient use of the PCOIP protocol is an efficient data exchange protocol, used the data compression, encryption, and connection optimization technology, the user can use under very low network bandwidth, and the actual operation of the data center is located in the background the desktop high-speed network, so end users can enjoy low bandwidth link in local area network (LAN) in the running speed,