- Baseband
- The total, mixed combination of all frequencies which modulate a given carrier in a radio system. In our satellite system, the baseband
is a band of frequencies from about 20 Hz to 15 KHz.
- Base Station
- A transmitter/receiver at a fixed location. We have one base station in our system.
- BBC
- The British Broadcasting Company The entity in Great Britain that
produces and distributes radio and television programming both domestically and
internationally. Our most frequent contact is with the programming and personel of BBC
World Service.
- Bearer Channel
- The part of an ISDN BRI or PRI that carries the bulk of the
information you bought the ISDN to carry. There are 2 :B: channels in a BRI
and 23 "B" Channels in a PRI.
- Billed Routing
- Theoretical circuit routing used by the phone company in determining charges for
interexchange service. Different from, and not to be confused with, actual signal routing.
- BRI
- Basic Rate Interface The minimal configuration of an ISDN service, a BRI delivers 144Kbits to the customers, broken down
into two 64Kbit Bearer Channels and one 16Kbit Data Channel. The B channels are used for actual
communications services while the D channel is used for call setup and other overhead.
- Bridging
- The opposite of terminating. Means high impedance
(hi-Z). A "bridging device" can be connected in parallel with an operating
circuit without affecting the levels in that circuit.
- Bureau
- An NPR bureau is a workplace, outside of Washington, which supplies the highest level of
support. This includes data and audio facilities, but most importantly, studio and
technical support. Bureaus may be permenant or temporary.
NPR maintains permenant
bureaus in Chicago, Los Angeles and New York. Examples of temporary bureaus include PT in
Atlanta, ATC in Memphis and the facilities provided for the political conventions.
An NPR Office provides the next lower level of support.
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