Polycom DOC2066F manual Bas

Appendix A: Glossary

Abbreviation/	Explanation
Term
Bandwidth	Defines the information carrying capacity of a channel. In
	analog systems, it is the difference between the highest
	frequency that a channel can carry and the lowest, measured
	in hertz. In digital systems, bandwidth is measured in bits per
	second The larger a connection's bandwidth, the more data
	can be transmitted in a given amount of time, allowing for
	greater video resolution and more sites in a conference. See
	Line Rate.
BAS	Bitrate Allocation Signal. BAS codes are used to exchange
	information about capabilities and commands between
	devices at opposite ends of a digital video connection.
B-Channel	Bearer Channel. A channel in a span or in a group of spans,
	that carries audio-visual data.The ISDN circuit-switched
	bearer channel is capable of transmitting 64 Kbps of digitized
	information.
Bonding	Bandwidth ON Demand INterpolarity Group. A transmission
	protocol that aggregates two 64 Kbps B channels to function
	as one 128 Kbps channel. When using several BRI channels,
	Bonding means that only one D-channel serves all BRI
	channels, while the remaining D-channels are used for data
	transfer.
	See also: BRI.
Bps, Kbps	Bits and kilobytes per second; a unit of bandwidth, that is the
	amount of data that can flow during one second over a
	communications line (using a transmission medium).
	1 Kbps=1000 Bps
BRI	Basic Rate Interface. A type of ISDN connection for
	transmitting data, consisting of 3 channels: two B-channels
	(each of 64 Kbps) and one D-channel (16 Kbps).
Carrier	A telephone or other company that provides
	telecommunication transmission services.
Cascading	The use of two MCUs in a multipoint video conference,
Conference	allowing for multipoint conferences with more than 12 video
	participants.

A-2