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: Abbreviation for bit.
- Browse Related Terms: AC, AMI, app, ATM, B, b/s, basecom, BCI, Bd, BOC, BW, C.O., CAD, CATV, CCS, COG, EO, EOW, ESD, ESF, FC, FEP, FIFO, FILO, FO, MFD, MFJ, MHz, MTA, mw, NA, nmi, Np, NPA, NVIS, OD, OPX, OTAR, PLA, PLS, POT, PPP, RAD, RI, RJ, RO, RQ, RSL, RX, s, sr, STP, SX, THD, TLM, TLP, TRANSEC, TX, uv, VNL, XO, XT
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A communications channel used for the transmission of an aggregate signal generated by multichannel transmitting equipment. 2. The CCITT (now, ITU-T) designation for a clear channel, 64-kb/s service capability provided to a subscriber under the Integrated Services Digital Network offering. Note: The B channel, also called the bearer channel, is intended for transport of user information, as opposed to signaling information.
- Browse Related Terms: aggregator, automatic ringdown circuit, B channel, Block Holder, compatibility testing, exchange access, facility, maintenance, MJU, network administration, number portability, open video systems, pair-gain system, point code (PC), positioned interface structure, second dialtone, service bit, service integrity, service signals, service-provider portability, system services API, terminal service profile (TSP), Toll Free Service End-User Subscriber, verified off-hook
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An MPEG video frame type that provides bidirectional interframe compression. Note: A b frame derives its content from the closest 1 or P frame, one in the past and one in the future. Generating b frames requires greater computing power than does generating 1 or P frames. The use of b frames enables compression ratios of 200:1. Robust MPEG encoders employ a combination of b, 1, and P frame encoding. [After Silicon]
- Browse Related Terms: active video frame identification, b frame, camcorder, frame grabber, frame matching, motion compensation, motion response degradation, normal resolution still image, object persistence, object retention, scene cut, video imagery, videoconference
All > Technology > Telecommunications
Abbreviation for bits per second.
- Browse Related Terms: AC, AMI, app, ATM, B, b/s, basecom, BCI, Bd, BOC, BW, C.O., CAD, CATV, CCS, COG, EO, EOW, ESD, ESF, FC, FEP, FIFO, FILO, FO, MFD, MFJ, MHz, MTA, mw, NA, nmi, Np, NPA, NVIS, OD, OPX, OTAR, PLA, PLS, POT, PPP, RAD, RI, RJ, RO, RQ, RSL, RX, s, sr, STP, SX, THD, TLM, TLP, TRANSEC, TX, uv, VNL, XO, XT
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Development specification.
- Browse Related Terms: AGARD, AID, B Spec, CDD, CED, Contract Work Breakdown Structure, D&D, DEV ENV, Engineering Development Model, Engineering Development Model Enhanced Target Delivery System (ETDS), EWDA, FFRDC, FSD, Independent Verification and Validation (IV&V), IR&D, IRAD, Material Fielding Plan, Missile Defense National Team (MDNT), NCDD, NDD, NRaD, PDL, R&D, RDA, RDC, SDL, SDP, Support Software, TBD
All > Technology > Programming > Java
- Business-to-business.
- Browse Related Terms: B2B, ebXML, Java API for XML Registries (JAXR), OASIS, registry provider, UDDI (Universal Description Discovery and Integration), XML registry
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Brigade and Below Command and Control System (Army term).
- Browse Related Terms: ABCCC, ACCS, AES, ATCCS, B2C2, BDE, C2, C2E, C2I, C2P, C2S, C2SC, C2Sims, C2STN, C2V, C2W, CCE, CCIS, CRP, Emission Control (EMCON), GCCS, ICS, JINTACCS, LCCE, MACCK, NCCOSC, NCCS, NUICCS, OLC 2, RADIC System, SPADCCS, Special Data Commands, System Integration Test, WAM, WWMCCS
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Abbreviation for bipolar with three-zero substitution. A T-carrier line code in which bipolar violations are deliberately inserted if user data contain a string of 3 or more consecutive zeros. Note 1: B3ZS is used to ensure a sufficient number of transitions to maintain system synchronization when the user data stream contains an insufficient number of "ones" to do so. Note 2: B3ZS is used in the North American hierarchy at the T3 rate.
- Browse Related Terms: B3ZS, B6ZS, B8ZS, content hierarchy levels, fractional T1, Manchester code, multistreaming technology, presentation unit, time-division multiplexing (TDM), trunk group multiplexer (TGM)
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Abbreviation for bipolar with six-zero substitution. A T-carrier line code in which bipolar violations are deliberately inserted if user data contain a string of 6 or more consecutive zeros. Note 1: B6ZS is used to ensure a sufficient number of transitions to maintain system synchronization when the user data stream contains an insufficient number of "ones" to do so. Note 2: B6ZS is used in the North American hierarchy at the T2 rate.
- Browse Related Terms: B3ZS, B6ZS, B8ZS, content hierarchy levels, fractional T1, Manchester code, multistreaming technology, presentation unit, time-division multiplexing (TDM), trunk group multiplexer (TGM)
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Abbreviation for bipolar with eight-zero substitution. A T-carrier line code in which bipolar violations are deliberately inserted if user data contains a string of 8 or more consecutive zeros. Note 1: B8ZS is used to ensure a sufficient number of transitions to maintain system synchronization when the user data stream contains an insufficient number of "ones" to do so. Note 2: B8ZS is used in the European hierarchy at the T1 rate.
- Browse Related Terms: B3ZS, B6ZS, B8ZS, content hierarchy levels, fractional T1, Manchester code, multistreaming technology, presentation unit, time-division multiplexing (TDM), trunk group multiplexer (TGM)
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A code in which eight consecutive zeros are replaced with the sequence 000+-0-+ if the preceding pulse was + and with the sequence 000-+0+- of the preceding pulse was -, where + represents a positive pulse, - represents a negative pulse, and 0 represents no pulse.
- Browse Related Terms: B8ZS (Bipolar with 8-Zero Substitution), BCH code, binary code, Bose-Chaudhuri-Hochquenghem code, CELP, most significant bit, multilevel modulation, non-return-to-zero change-on-ones (NRZ1), paired disparity code, Parity, redundant code, unit-distance code
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Budget activity. The budget activity codes are: 01 Basic Research 02 Exploratory Development 03 Advance Technology Development 04 Dem/Val 05 EMD 06 Management Support 07 Operational Systems Development
- Browse Related Terms: ACDT, ACTD, ACTEX, ADLT, AIST, AIT, ARCT, ASDP, AST, ASTP, AT, ATD, ATI, ATIM, ATP, ATTD, ATV, BA, BM ATD, BPT ATD, BT ATD, DITP, Ground-Based Interceptor Experiment (GBI-X), LATS, SMATH, TDADT
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All > Technology > Telecommunications
In transmission systems, the aggregate of crosstalk induced in a given line by all other lines.
- Browse Related Terms: anisochronous transmission, babble, nonsynchronous system, nonsynchronous transmission, radio telegraphy, vocoder, voice coder
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Budget At Completion.
- Browse Related Terms: BAC, Comp, PERT Chart
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Synonym trapdoor.
- Browse Related Terms: back door, coherent bundle, flow diagram, flywheeling, magic cookie, news client, passive element, plunger, radiant exitance, Scene, scream, set-top box, sexadecimal, spacing pulse, spacing signal, switchpoint, telephone sidetone, WRU signal
All > Technology > Search > SEO / Search Marketing
Back links are inbound links pointing to a web page. See: Inbound Links Definition
- Browse Related Terms: Back links, External Link, Google Juice, Hyperlinks, Inbound Link, Inbound links (IBL), Link Bursts, Link Churn, Link Equity, Link Hoarding, Link Popularity, Link spam, Mindshare, PageRank (PR)
All > Technology > E-mail > Microsoft Email > Microsoft Exchange > Microsoft Exchange 2007
A system resource monitoring feature on Exchange 2007 transport servers. When a monitored system resource, such as hard disk drive utilization or memory utilization, exceeds the specified threshold, the Exchange transport server stops accepting new connections and messages, and concentrates on delivering existing messages. When the utilization of the monitored system resources returns to normal utilization levels, the Exchange transport server is allowed to accept new connections and messages. [Exchange 2007]
- Browse Related Terms: back pressure, backoff, bridgehead server, categorizer, coexist, connector, Drop directory, Foreign connector, foreign gateway connection handler, linked connector, open proxy, Receive connector, Routing group, routing group connector, Send connector, smart host, SMTP connector, store override
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A direct connection between the output of a transmitting device and the input of an associated receiving device. Note: When used for equipment measurements or testing purposes, such a back-to-back connection eliminates the effects of the transmission channel or medium. 2. A direct connection between the output of a receiving device and the input to a transmitting device. Note: The term "direct," as used in both definitions, may be construed as permitting a passive device such as a pad (attenuator) to accommodate power level constraints.
- Browse Related Terms: back-to-back connection, branching repeater, combinational logic element, common-mode rejection ratio (CMRR), equal-level patch bay, noise suppression, output rating, protection ratio, rated output power, receive-after-transmit time delay, receiver attack-time delay, sequential logic element, squelch, through-group equipment, vogad, zero-level decoder