Glossary
B channel ◆ A 56 Kbps or 64 Kbps bearer channel. Typically used for delivering data or voice over ISDN.
Bearer Service ◆ A type of telecommunications service that provides the capability to transmit a specific type of data such as voice or fax.
Bonding ◆ Bonding is the act of combining two 64 Kbps
BPV (BiPolar Violation) ◆ A BPV error event for an
BRI (Basic Rate Interface) ◆ A defined ISDN interface that includes two B channels and one D channel. Also known as 2B+D. B channels are used for voice and data while the D channel is generally used only for signalling within the telephone network.
call bumping ◆ The ability to receive an incoming call during a bonded outbound call.
CCITT (International Telephone and Telegraph Consultative
Committee) ◆ See ITU (International Telecommunication Union) on page ITU (International Telecommunication Union).
Centrex ◆ Local Public Exchange with PBX facilities.
channel aggregation ◆ Channel aggregation combines multiple physical channels into one logical channel of greater bandwidth.
CO (Central Office) ◆ The site where the local Telco switches reside for all the telephone system’s call routing and other functions. This is the Telco side of the local loop. If the distance between your location and the central office switch exceeds 18,000 feet and/or the signal loss exceeds 35.0 dB, a repeater must be installed to allow ISDN service.
configuration cycle ◆ A type of I/O cycle provided on the PCI bus to facilitate system configuration.
CPE
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