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UPNP is the abbreviation of Universal Plug and Play, i.e.: the Universal Plug and Play Protocol. It
is actually a structure to realize peer-to-peer network connection for computer and intelligent electrical
appliances, whereas the intranet address and the network address is changed based on this protocol.
Therefore, as long as our router support UPnP and we use the XP operating system that supports the
protocol, we can improve the point-to-point transfer speed accordingly.
Access to the setting interface of router; if your router supports UPnP, you will see UPnP setting
option beneath the Forwarding Rules Option card (it will be different if the router is different). For this
option, we select
“Enable UPnP”, and then we re-start the router. Just like this, we finish setting the
router.
12.RTSP
RTSP
（
Real Time Streaming Protocol
）
is an Application layer protocol among the TCP/IP protocol
system; it is an IETF RFC standard submitted by Columbia University, Netscape and Real Networks
Corporate. This protocol defines how the one-to-many application program may forward the
multimedia data through IP network, The system structure of RTSP is higher than RTP and RTCP,
using TCP or RTP to finish data transfer. Comparing with the HTTP and RTSP, the HTTP transfers
HTML, but RTP transfers the multimedia data. The HTTP request is sent by the client host, and the
server will respond; when using the RTSP, the client host and server may send request, i.e.: RTSP is of
dual-way.
RTSP is the multimedia serial protocol to control voice or image, and the Multicast is allowed
simultaneously; when transferring, the network communication protocol is out the defined range,
therefore it can select TCP or UDP to transfer the serial content at the server terminal. RTSP has the
grammar and operation flow similar to HTTP 1.1, but it does not emphasize the time synchronization,
so it can tolerate the network delay. However, the Multicast said above, can not only reduce the
network flow at the server terminal, but also support Video Conference between multiple parties.
13. VLC
VLC multimedia player (named as VideoLan client terminal initially) is a multimedia player of
Video Lan plan; it supports multiple audio and video encoders and file formats, and supports DVD,
VCD and other streaming protocols. Meanwhile, it can also be used as the streaming server for unicast
or multicast to use for IPv4 or IPv 6 high speed network connection. VLC is integrated with encoder
planned by FFmpeg and libdvdcss pool, which makes it available the function to play multimedia file
and encrypted DVD.
14. NTP
Network Time Protocol
（
NTP
）
is a protocol to make the time of computer synchronize; it can make
the computer synchronize the server or clock source (for instance: quartz clock, GPS and so on); it can
provide high accuracy time correction (with the difference less than 1ms between LAN and the
standard, and less than dozens of millisecond for WAN), and it can choose the encryption confirmation
method to prevent evil protocol attack.
15. 3G
3G Digit Content College co-works with the Information Industry Department to declare that, the
3
rd
General Mobile Communication Technology is the cell mobile communication technology supports
high speed data transfer. The 3G service can transfer voice (call) and data information (email, instant
message and so on) simultaneously; its typical feature is the one to provide high speed data service.
3G is the abbreviation of the Third Generation, referring to the 3
rd
-general mobile communication
technology. Comparing with the 1
st
-general analogue mobile phone and the 2
nd
-general digital mobile
phone (such as GSM and CDMA), the 3G mobile phone is the new generation of mobile
communication system to integrate the wireless communication and international internet and other
multimedia communications.
16. WIFI
Wi-Fi is a technology to connect the personal computer, hand-held equipment (i.e.: PDA, mobile
phone) and other terminals in the wireless method.
In fact, Wi-Fi, is the another name of IEEE 802.11b, an industrial term to be published by Wireless
Ethernet Compatibility Alliance (WECA), meaning the Wireless Fidelity in Chinese. It is a kind of
short-distance wireless transfer technology, supporting the internet-based wireless signal within