| B8ZS |
Bipolar 8-Zero Substitution. Encoding method used on T1 circuits that inserts two successive Ones of the same voltage - referred to as bipolar violation - into a signal, whenever eight consecutive Zeros are transmitted |
| Backhaul |
Transmission of data to a point from which it can be distributed over a network. For example, radio |
| Band |
Specific range of frequencies in the RF spectrum, which is divided among ranges from very low frequencies (vlf) to extremely high frequencies (ehf). Each band has a defined upper and lower frequency limit |
| Bandwidth |
The signal(s) used to modulate the radio channel in the transmitter, and which are recovered by the receiver by demodulating the received radio channel |
| Baseband |
Unlicensed band. Use includes cordless phones, small appliances, wireless video security systems, data modems |
| BCD |
Binary Coded Decimal. Digits 0-9 are encoded as 4 bit numbers (nibbles) See TBCD |
| BER |
Bit Error Rate. The fraction of binary bits that are received with the wrong value |
| BGP |
The border gateway protocol (BGP) is one of the core routing protocols in the Internet. It works by maintaining a table of IP networks or 'prefixes' which designate network reachability between autonomous systems (AS) |
| Bit |
Fundamental unit of information, occupying two discrete states, 0 or 1 |
| Bluetooth |
A cable-replacement radio protocol for short distance (5-100 meter) networking at moderate speeds (1 Mbps raw bandwidth). Developed by the Bluetooth Consortium and IEEE 802.15 |
| BOC |
Bell Operating Company |
| Border Router |
IP router that connects to routers in other networks with EBGP protocol |
| BPL |
Broadband over Power Lines. Broadband delivery method in remote, rural areas not served by DSL or cable-modem services |
| Bps |
Bits Per Second. Standard measurement of transmission speed |
| BPSK |
Biphase Shift Keying |
| BPV |
Bi-Polar Violation. Transmission of two one-bits in a PCM channel (e.g. DS0) with the same polarity (e.g. both positive or both negative). May be deliberately used to indicate all-zero octets. See B8ZS and HDB3 |
| Bridge |
Connects LANs that use same protocol (e.g., Ethernet or Token Ring) |
| Bridging Table |
Bridges learn which addresses reside on which network and develop a table. Subsequent messages are then forwarded to right network |
| Broadband |
Refers to telecommunication in which a wide band of frequencies is available to transmit information. Information can be multiplexed, sent on many different frequencies or channels within the band concurrently. Sometimes referred to as wideband. Digital Subscriber Line (DSL) and cable TV are broadband services in the downstream direction |
| BTTH |
Broadband To The Home |
| Burst |
Specific amount of data sent or received in one intermittent operation. Measured by Burst Rate; can be contrasted with streamed, paced or continuous |
| BWA |
Broadband Wireless Access. Can provide more capacity than wired broadband (cable and DSL) by extending fiber optic networks over airwaves. Rapid deployment of broadband network with radio base stations mounted on buildings or towers to create high-capacity wireless access system from ground up |
| Byte |
An 8 bit unit of data storage. See octet |
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