RADVISION术语表

Glossary (#)

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3G
Third Generation Mobile System - The generic term for the next generation of mobile wireless communications networks.

3GPP
Third Generation Partnership Project - A body comprising several organizational partners working to produce technical specifications for a third-generation mobile system based on GSM core networks and the radio access technologies they support known as
WCDMA (UMTS).

3GPP2
The 3rd Generation Partnership Project 2 (3GPP2) is a collaboration agreement that was established in December 1998. A cooperation between ARIB/TTC (Japan), CCSA (China), Telecommunications Industry Association (TIA) (North America) and Telecommunications Technology Association (TTA)(South Korea) to make a globally applicable third generation (3G) mobile phone system specification within the scope of the ITU's IMT-2000 project. In practice, 3GPP2 is the standardization group for CDMA2000, the set of 3G standards based on earlier 2G CDMA technology.

3G-324M
The Third Generation Partnership Project (3GPP) has adopted the ITU-T Recommendation H.324 Annex C, also referred to as H.324/M (Mobile) or H.324M (with very few changes), on their 3G-324M as the standard for multimedia telephony over 3G circuit switched cellular networks. This standard is used for handling real-time video telephony in 3G mobile handsets.

4CIF (Common Intermediate Format)
A standard video format used in video conferencing. CIF has 4 times the resolution of QCIF. 4CIF has 4 times the resolution of CIF and is equivalent to standard PAL TV resolution (704 by 576 pixels).