Polycom manual Abbreviation, Explanation, Term, Polycom RMX 2000 Administrator’s Guide

Polycom RMX 2000 Administrator’s Guide

Abbreviation/	Explanation
Term
G.722	ITU-T audio algorithm, 64Kbps, 7 kHz.
G.728	ITU-T audio algorithm, 16Kbps, 3.4 kHz.
Gatekeeper	A type of server that performs two main functions:
	translates LAN alias addresses of terminals and gateways
	to IP addresses and provides bandwidth management.
H.221	ITU-T standard that defines how to multiplex video, audio,
	control, and user data into one serial bit stream.
H.230	ITU-T standard that defines simple multipoint control
	systems procedures and describes network maintenance
	functions.
H.231	ITU-T standard that defines a set of MCU functions and
	operational requirements.
H.242	ITU-T standard that defines initiation of communications
	between systems and capabilities negotiation procedures.
H.243	ITU-T standard that defines initiation of communications
	between systems and capabilities negotiation procedures
	in multipoint conferences.
H.261	ITU-T standard that defines the Px64 video coding
	algorithm.
H.263	ITU-T standard that provides improved compression and
	quality of video images at a line rate lower than 384 Kbps.
	This standard is not supported by all codecs.
H.264*	A proprietary Polycom Video compression standard.
H.264	ITU-T standard that provides improved compression and
	quality of video images in lower line rate connections and
	is part of the Highest Common mechanism in Video
	Switching conferences.
H.320	ITU-T standard that defines how the H-series video
	conferencing recommendations work together.
H.323	ITU-T standard for audio, video and data communications
	across IP-based (LAN) networks, including the Internet.

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