Polycom DOC2560C manual Ice

Appendix A-Glossary

Abbreviation/	Explanation
Term
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.
ICE	Interactive Connectivity Establishment (ICE) provides a
	structure/protocol to unify the various NAT Traversal
	techniques that are used to cross firewalls.
	It enables SIP based endpoints to connect while
	traversing a variety of firewalls that may exist between the
	calling endpoint (local) and the MCU or called endpoint
	(remote).
IP	Internet Protocol. The working protocol that forms the
	basis of the internet.

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