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A protocol for network interworking which supports communication between adjacent networks and communication thru transit networks.
- Browse Related Terms: branching network, computer network engineering, Federal Networking Council (FNC), Fiber Distributed Data Interface (FDDI), network integrity, network loss, network reliability, port, request acknowledgment, shaping network, spur, telecommunication architecture, token-bus network, transit network identification, transit network section, X.75 Gateway Service
All > Technology > Telecommunications
Unassigned overhead bits. Transmitters should code these bits as zeros while receivers are required to be capable of ignoring the value contained in these bits. [T1.646-1995]
- Browse Related Terms: bit stuffing, error correction, maximum user signaling rate, multiplex aggregate bit rate, overhead communications, system overhead information, user overhead information, X-bits
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In facsimile systems, the effective recorded spot dimension measured in the direction of the recorded line. Note 1: By "effective recorded spot dimension" is meant the largest center-to-center spacing between recorded spots, which gives minimum peak-to-peak variation of density of the recorded line. Note 2: "X-dimension of recorded spot" implies that the facsimile equipment response to a constant density in the object (original) is a succession of discrete recorded spots.
- Browse Related Terms: flood projection, maximum keying frequency, multiple-spot scanning, picture black, picture white, raster scanning, scanning field, scanning line, scanning line frequency, scanning line length, scanning line period, scanning rate, simple scanning, spot projection, stroke speed, synchronizing, synchronizing signal, total line length, X-dimension of recorded spot, X-dimension of scanning spot, Y-dimension of recorded spot, Y-dimension of scanning spot
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In facsimile systems, the distance between the centers of adjacent scanning spots measured in the direction of the scanning line on the object. Note: The numerical value of the X-dimension of scanning spot depends upon the type of system.
- Browse Related Terms: flood projection, maximum keying frequency, multiple-spot scanning, picture black, picture white, raster scanning, scanning field, scanning line, scanning line frequency, scanning line length, scanning line period, scanning rate, simple scanning, spot projection, stroke speed, synchronizing, synchronizing signal, total line length, X-dimension of recorded spot, X-dimension of scanning spot, Y-dimension of recorded spot, Y-dimension of scanning spot
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Sets of data telecommunications protocols and interfaces defined by CCITT (now, ITU-T) Recommendations. Note: Some of the more common X.-series Recommendations are:
- X.25: A Recommendation for public packet switched communications between a network user and the network itself.
- X.75: A Recommendation for public packet switched communications between network hubs.
- X.400: An addressing scheme for use with e-mail.
- X.500: An addressing scheme for directory services.
- Browse Related Terms: administration, Federal Telecommunications System (FTS), network site, private NS/EP telecommunications services, public data network (PDN), public data transmission service, public land mobile network (PLMN), recognized operating agency (ROA), resale service, telecommunication administration, telecommunication sector, telecommunications facilities, voice grade, X.-series Recommendations
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Synonym altazimuth mount.
- Browse Related Terms: access contention, Accrediting Authority, article, asymmetrical modulator, attenuation rate, balanced signal pair, banner page, beeping, bookmark list, budgeting, buffer amplifier, call intensity, central processor, chain letter, collective address, communications base station, compiling program, control ball, exchange line, extra block, fan out, field tag, flexible disk, floppy disk, followup, managing system, message toll service, mission bit stream, modification detection, multiparty line, multiplexing equipment, multipoint, Net, network terminating interface (NTI), optoisolator, originator-to-recipient speed of service, path attenuation, picture, plane polarization, positive feedback, premodulation combining, profile dip, radio frequency interference (RFI), radiological monitoring, ray optics, reproducibility, right-hand rule, satellite Earth terminal, screened-host gateway, secondary surveillance radar, segregation, selection position, seven-bit byte, shock spectrum, signal conversion equipment, six-bit byte, slit source, sporadic E propagation, stationary wave, supervisor state, system blocking, systems analysis, three-bit byte, traffic unit, translating program, transmission window, unidirectional channel, upright position, usage, useful line, user service class, Web Crawler, wired community, x-y mount
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Recording enabled by the scanning action of an optical beam on a photoconducting surface on which an electrostatically charged latent image is developed with a resinous powder (toner).
- Browse Related Terms: angstrom (Å), bar code, beamsplitter, conservation of radiance, machine-readable medium, optical path length, optical thickness, soft sectoring, telecommunication, xerographic recording
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Abbreviation for eXtensible Markup Language. A trimmed specification or version of the Standard Generalized Markup Language (SGML) that allows Web developers to create customized tags for additional functionality.
- Browse Related Terms: meta, meta name, Search engine, Standard Generalized Mark-up Language, surf, tree search, vertical portal, WWW robot, XML
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Abbreviation for crystal oscillator.
- 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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Abbreviation for crosstalk.
- 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