Video Conference Industry Comprehensive Glossary

1. H323

H323 is a set of standards issued by the International Telecommunication Union Telecommunication Standards Bureau (Itu-t) , which defines a set of protocols for audio and video communication in computer networks. The H. 323 network consists of terminals, gatekeepers, and multipoint control units (mcus)

2. DROP THE BAG

In the process of transmission, because of various reasons, it is impossible to complete 100% , there will always be a hole due to a certain loss, resulting in packet loss.

3. P2P

Peer to Peer, called Peer-to-Peer connections or Peer-to-Peer networks. The P2P technology mainly refers to the information control technology after the hardware formation connection, its representative form is the software.

4. AGC

Automatic gain control refers to the process of recording, the system automatically adjust the volume according to the sound level, so as to keep the sound level as consistent as possible. In the telephone network, the volume of both sides of the call is often inconsistent, the "automatic gain control" function of the software will make the volume of both sides tend to be the same, so that the voice is more clear and beautiful.

5. ANS

Automatic Noise Suppression. The ANS detects background noise (such as fans, air conditioners, etc.) and automatically filters it to create a clear voice for the attendees.

6. AEC

Acoustic Echo Canceller, ECHO Canceller

7. Qos

Quality of Service, Quality of Service. QOS (quality of service) is a security mechanism of the network and a technology used to solve the problems of network delay and congestion.

8. VOIP

Voice over Internet Protocol

9. SIP

Phone SIP, Session Initiation Protocol is a signaling Protocol that has important implications for the Communications Industry A SIP phone is a VoIP phone, and VOIP or software phones are of the same type. These calls are made over VOIP (voice over Internet Protocol) technology.

10. AV / S Terminal

Terminal also known as interface, that is, signal input, output interface. Multiple AV terminals refer to multiple sets of Audio / video input / output interfaces.

11. A / V

Audio and Video, a / V file is an Audio and Video file.

12. C2C

The Consumer To Consumer, the user To user model.

13. CDMA

Code Division Multiple Access, also called Code Division Multiple Access, is a wireless communication technology developed on the basis of digital communication technology. It is used in mobile telephone system, wireless network system and personal communication service.

14. IIS

Internet Information Services, Internet Information Services

15. Lan

A Local Area Network (Lan) is a group of computers connected together in a certain Area. Usually within a few kilometers.

16. Vlan

The Virtual Local Area Network, or Virtual Lan, is a data exchange technique that logically (not physically, mind you) divides LAN devices into Network segments (or smaller lans to create Virtual workgroups) .

17. Mcu

Multi-point Control Unit (mcu) is a key device used in multimedia video conference, also called Video Conference Server, whose main function is to coordinate and control video transmission among multiple terminals.

18. MMX

Mmx stands for multimedia extended instruction set. These instruction sets can speed up the processing of graphics, images, sounds, and so on.

19. MPEG Layer-3

The third layer of MPEG, MP3, is an audio coding compression scheme.

20. Mpeg4

MPEG4 STANDS FOR DYNAMIC IMAGE COMPRESSION STANDARD

21. NAT

Network Address Translation hides internally managed Ip addresses from the outside world by converting private network addresses, such as Intranet addresses, to public addresses, such as the Internet. In this way, by using unregistered IP addresses internally and converting them to a small number of externally registered IP addresses, the cost of Ip address registration is reduced and the address space (i.e. IPV4) , which is increasingly scarce, is saved. At the same time, it also hides the internal network structure, which reduces the risk of internal network being attacked.

22. Isdn

Integrated Services Digital Network, a Integrated Services Digital Network Network that integrates all types of telecommunications Services (telephone, telegraph, Fax, Data and images, etc.) into one Network for processing and transmission, and interworking between different service terminals. Users only need to use a telephone port to realize the simultaneous transmission of telephone, fax and Image