Polycom ViewStation manual Bri

	Glossary
BRI	The ISDN Basic Rate Interface, or BRI,
	provides two B channels and one 16 Kbps D
	channel (2B+D) for a total of 144 Kbps (128K
	for Video).
Bridge	A device that passes packets between
	multiple network segments using the same
	communications protocol.
	If a packet is destined for a user within the
	sender’s own network segment, the bridge
	keeps the bridge packet local.
	If the packet is bound for another segment,
	the passes the packet onto the network
	backbone. Also, in videoconferencing, a
	Multi-Point Control Unit. See MCU.
CIF	Common Intermediate Format. An
	intermediate video format. CIF resolution is
	352x288 pixels. QCIF (quarter CIF) is
	176x144 pixels.
Client	A networked PC or terminal that shares
	services with other PCs. These services are
	stored on or administered by a server.
Conference Call	Any voice or data call that establishes
	contact with two or more end points, such
	that each end point is able to communicate
	to the others. Conference calls require some
	type of service that links all the end point
	together, and transmits all voice/data to each
	end point. This service can be provided by a
	PBX (typically by using the flash key), or by
	contacting a conference bridge.

© Polycom, Inc. 217 ViewStation User Guide