NEWTON’s
`paeaHs),
`DICTIONARY
`
`Page 1 of 5
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`OVER 500,000 SOLD
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`f;y3 ' ‘i
`
`bi
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`4
`
`The Authoritative Resource for
`Telecommunications, Networking,
`MROMMLMALECmeeehy
`
`MORE THAN 20,000 TERMS DEFINED
`
`~Si Updated and Expanded Edition
`
`ae Harry Newton
`
`ely230101.4)
`
`RPX CORP. ET AL.
`
`EXHIBIT 1019
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`Page 1 of 5
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`
`NEWTON's TELECOM DICTIONARY
`copyright © 2002 Harry Newton
`email: Harry@HarryNewton.com
`personal web site: www.HarryNewton.com
`business web site: www.Technologylnvestor.com
`
`All rights reserved under International and Pan-American Copyright conventions, including
`the right to reproduce this book or portions thereof in any form whatsoever.
`
`Published by CMP Books
`An imprint of CMP Media LLC.
`12 West 21 Street
`New York, NY 10010
`
`ISBN Number 1-57820-104-7
`
`February 2002
`
`Eighteenth Edition
`
`For individual orders, and for information on special discounts for quantity orders,
`please contact:
`
`CMP Books
`6600 Silacci Way
`Gilroy, CA 95020
`Tel: 1-800-500-6875 or 408-848-3854
`Fax: 408-848-5784
`Web: www.cmpbooks.com
`Email: cmp@rushorder.com
`
`This book is also sold through www.Amazon.com, www.Fatbrain.com and
`www.BarnesAndNoble.com
`
`Distributed to the book trade in the U.S. and Canada by Publishers Group West
`1700 Fourth St., Berkeley, CA 94710
`
`Manufactured in the United States of America
`
`Page 2 of 5
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`Cable Shield I Cache
`
`metallic members, strength members, or jackets. See Cable Shield.
`Cable Shield A metallic component of the cable sheath which prevents outside elec(cid:173)
`trical interference and drains off current induced by lightning.
`Cable Signal leakage Excessive levels of radio frequency (RF) energy that leak
`from cable television systems. leak can cause interference to communications users, includ(cid:173)
`ing safety service users such as aviation, police and fire departments. FCC rules specify the
`maximum RF leakage, and require that cable television systems be operated within certain
`guidelines.
`Cable Stripper l. Tool used to strip the jackets off ALPETH and lead-jacketed tele(cid:173)
`phone cable. Cable strippers include cable knives and snips.
`2. A professional or amateur stripper who appears on X-rated, or community access chan(cid:173)
`nels. Quality varies widely. Pay is often non-existent.
`Cable Telephony Cable Telephony is transmitting anything other than TV pictures
`over a cable TV system. That "anything" might be anything from a data connection to the
`Internet to simple, standard, analog voice phone calls -
`local, long distance and inter(cid:173)
`national. Typically transmitting anything other than TV over the standard coaxial cable CATV
`providers install at your house requires a cable modem. See Cable Modem.
`Cable Television CATV. See CATV.
`Cable Television Laboratories, Inc. See Cablelabs.
`Cable Television Relay Station See CARS.
`Cable Type The type of cable used. Also called the media. Examples are coaxial, UTP
`(Unshielded Twisted Pair), STP (Shielded Twisted Pair) and fiber. Factors including cost,
`connectivity and bandwidth are important in determining cable type. Choosing cable is get(cid:173)
`ting more and more complex. Our tip: Choose and buy well in advance of when you'll need
`it. The cable you want will not always be in stock.
`Cable Vault Room under the main distribution frame in a central office building.
`Cables from the subscribers lines come into the building through the cable vault. Frorn here
`they snake their way up to the main distribution frame. The cable vault looks like a bad B(cid:173)
`movie portrayal of Hell, replete with thousands of dangerous black snakes. Cable vaults are
`prime targets for the spontaneous starting of fires. They should be protected with Halon gas,
`but usually aren't because some parts of the phone industry think Halon is too expensive.
`Cable Weight Expressed in lbs per 1000 (without reel weight included). Affects
`sag, span and size of the messenger in aerial applications.
`CableB2B CableB2B is a trademarked term for an initiative led by Cablelabs to devel(cid:173)
`op interoperable interface specifications to support the automation of B2B (Business-to(cid:173)
`Business) communications between CA TV operators and Internet content providers. The
`B2B message set is anticipated to include specifications for service availability and order
`management, provisioning, network management, and customer care. See also Cablelabs.
`Cablecast Cablecasting. Non-broadcast radio or television programming transmitted
`by a cable television system to lts subscribers. Cablecast programming may be originated
`by the cable operator itself ("origination cablecasting" or "local origination") or by an
`access organization.
`Cablehead The point where a marine cable connects to terrestrial facilities.
`CableHome CableHome is a trademarked term of Cablelabs for a project to develop
`interface specifications to extend high quality cable-based (i.e., cable TV-based) services to
`network devices within the residence. The initiative addresses issues of device interoper(cid:173)
`ability, QoS (Quality of Service), and network management. See also Cablelabs.
`Cable labs Cable Television Laboratories, Inc. A research and development consortium
`of cable television system operators established in 1988, Cablelabs membership includes
`system operators in North, Central, or South America, and the Caribbean. Cablelabs plans
`and funds research and development projects to help member companies and the cable
`industry take advantage of opportunities and meet challenges in the telecommunications
`industry. A good deal of emphasis is placed on digital cable and cable modem technolo·
`gies. Current projects include CableModem (formerly known as DOCSIS), PacketCable,
`OpenCable, CableB2B, and CableHome. www.cablelabs.com. See also the definitions for
`the above projects.
`Cablelabs Certified CableModem Cablelabs Certified CableModem is a
`trademarked term for a cable modem initiative previously known as DOCSIS, a project led
`by the MCNS (Multimedia Cable Network System Partners limited), which consisted of
`leading CATV operators. The DOCSIS project, now spearheaded by Cablelabs, the research
`and development organization supporting the CATV industry, was aimed at developing on
`behalf of the North American CATV industry a set of necessary communications and opera·
`lions support interface specifications for cable modems and associated equipment. The
`
`project led to the deployment of HFC (Hybrid Fiber-Coax) cable television systems in sup(cid:173)
`port of high-speed bi-directional data transfer, as well as entertainment TV. Activities are in
`phases, with the interfaces to be addressed including Cable Modem to CPE Interface
`(CMCI), Cable Modem Termination System-Network Side Interface (CMTS·NSI), Operations ·
`Support System Interface (OSSI), Cable Modem Telco Return Interface (CMTRI), Cable
`Modem to RF Interface (CMRFI), Cable Modem Termination System-Downstream RF
`Interface (CMTS-DRFI), Cable Modem Termination System-Upstream RF Interface ((MTS·
`URFI), and Data Over Cable Security System (DOCSS). Overlaying the Cablelabs Certified
`infrastructure is the PacketCable project, a set of interoperable interface specifications for
`delivering advanced, real-time multimedia services over two-way cable plants. PacketCable
`will use IP (Internet Protocol) technology in support of multimedia conferencing, IP tele(cid:173)
`phone, interactive gaming, and a wide range of multimedia services. For more detail see
`CMCI, CMTS-NSI, OSSI, CMTRI, CMRFI, CMTS-DRFI, CMTS·URFI; and DOCSS. See also
`Cablelabs and MCNS.
`Cableway An opening in a work surface that allows access to cords or cables from
`below, or mounting of an electrical receptacle or telephone jack. Cableways typically come
`with removable plastic grommets.
`Cabling The combination of all cables, wire, cords, and connecting hardware installed.
`A term used to refer collectively to the installed wiring in a given space.
`Cabling Reference Panel (of the ACIF) CRP. One of the five reference
`panels of the Australian Communications Industry Forum, the CRP is responsible for the for·
`mulation of telecommunications cabling standards and management of the cabling indus(cid:173)
`try licensing arrangements.
`CABS Carrier Access Billing System. Basically, when a company has a network in a CLEC
`environment, other companies can use that network for their own traffic. The CABS system
`allows each company to bill the others for the balance of traffic which they passed.
`CABS BOS Carrier Access Billing Specifications -Billing Output Specifications.
`CAC l. Carrier Access Code. The digits you must dial in North America to reach the long
`distance carrier of your choice. Those digits fit the following format l 01 X·XXX.
`2. Customer Administration Center. A type of terminal used by a PBX user to maintain and
`troubleshoot his PBX.
`3. Connection Admission Control is defined as the set of actions taken by the network dur·
`ing the call setup phase (or during the call re-negotiation phase) in order to determine
`whether a connection request can be accepted or should be rejected (or whether a request
`for re-allocation can be accomplished).
`CACH Call Appearance Call Handling
`Cache From the French "cacher," which translates "to press or hide," especially in terms
`of tools or provisions. In the context of computer systems and networks, information is
`cached by placing it closer to the user or user application in order to make it more readily
`and speedily accessible, and transparently so. At the same time, information which is
`cached places less strain on limited computer 1/0 (Input/Output) resources and limited
`network resources. Let's consider two specific definitions, the first of which relates to corn·
`puter systems and the second of which relates to computer networks. Let's also consider a
`combination of the first two, in the context of the Internet.
`l. In the context of a computer system, cache memory generally is a partition of SRAM
`(Static Random Access Memory). Since much of computing is highly repetitive or pre(cid:173)
`dictable in nature, and since solid state components (silicon chips) are much faster than
`mechanical disk drives, the speed of information access can be enhanced if certain infor·
`motion can be stored in RAM. That information typically is in the form of program infor·
`motion, memory addresses, or data. Thereby, the information can be stored in anticipation
`of your need for it, and can be presented to you faster than if the computer needed to
`access the hard drive through the execution of an 1/0 function. The cache memory sits
`(logically and, perhaps physically) between the CPU and the main memory (RAM). Caching
`works because of a phenomenon known as the locality principle which states that a van
`Neumann CPU (i.e., one that performs instructions and makes database calls sequentially,
`one after another) tends to access the same memory locations over and over again. A
`cache works like this. When the CPU needs data from memory, the system checks to see
`if the information is already in the cache. If it is, it grabs that information; this is called o
`cache hit.
`If it isn't, it's called a cache miss and the computer has to fetch the information
`by accessing the main memory or hard disk, which is slower. Data retrieved during a cache
`miss is often written into the cache in anticipation of further need for it. let's assume that
`you open a CD·ROM application with hyperlinks. As the system can reasonably assume that
`you will exercise the hyperlink options, the information associated with them can be stored
`
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`122
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`Page 3 of 5
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`
`cable television systems in sup(cid:173)
`tertainment TV. Activities are in
`able Modem to CPE Interface
`terface (CMTS-NSI), Operations
`iturn Interface (CMTRI), Cable
`1otion System-Downstream RF
`·Upstream RF Interface (CMTS(cid:173)
`srloying the Cablelobs Certified
`able interface specifications for
`~way cable plants. PocketCable
`ultimedio conferencing, IP tele(cid:173)
`a services. For more detail see
`S-URFI, and DOCSS. See also
`
`access to cords or cables from
`jock. Coblewoys typically come
`
`connecting hardware installed.
`given space.
`' CRP. One of the five reference
`e CRP is responsible for the for-
`1agement of the cabling indus·
`
`npony hos o network in a CLEC
`ir own traffic. The CABS system
`·affic which they passed.
`Output Specifications.
`orth America to reach the long
`J format lOlX-XXX.
`by a PBX user to maintain and
`
`lions token by the network dur(cid:173)
`phase) in order to determine
`rejected (or whether a request
`
`iss or hide," especially in terms
`; and networks, information is
`order to make it more readily
`ne time, information which is
`'Output) resources and limited
`1e first of which relates to com(cid:173)
`networks. let's also consider a
`
`inerolly is a partition of SRAM
`ng is highly repetitive or pre(cid:173)
`n chips) ore much foster than
`n be enhanced if certain infor(cid:173)
`in the form of program infor-
`m can be stored in anticipation
`on if the computer needed to
`Ktion. The cache memory sits
`main memory (RAM). Caching
`nciple which states that a van
`:es database calls sequentially,
`Jtions over and over again. A
`10ry, the system checks to see
`mt information; this is called a
`er has to fetch the information
`Doto retrieved during a cache
`need for it. Let's assume that
`m can reasonably assume that
`:ioted with them can be stored
`
`Cache Array Routing Protocol I Call
`
`he memory. If you do, indeed, exercise those options, it's a cache hit and the data
`.
`in ~~re waiting for you. The cache also will hold information that you recently accessed, in
`JS ti ipation of your wonting to back up, or access it again. Caching can take place through
`on ctioned or segmented cache memory, which can be in the form of l 1 (Level 1) primary
`po~e and L2 (level 2) secondary cache. l1 cache memory is accessed first, l2 second,
`coc main memory (RAM) and then hard drive lost. Also, one cache might hold program
`thetructions and the other might hold data. Generally when the cache is exhausted, it is
`flsshed and the data is written bock to main memory, to be replaced with the next cache
`ucording to a replacement algorithm. The cache freshing and flushing mechanism is
`d~signed differently by different. vendors. It behaves slig_htiy different. However it mainly
`depends on main memory type, like wnte bock or WB, wnte through or WT, wnte protected
`r WT write combining or WC and uncached or UC. See also Cache Memory.
`~ In !he context of a computer network such as a LAN, or the combination of the Internet
`o~d World Wide Web, data can be cached in a_ server which is close to you._ln anticipation
`of your imminent request for that data 1n a logical sequence of data access, 1t will be trans(cid:173)
`mitted from the main server to the remote server. Thereby, the data is accessible to you
`more quickly than if it hod to be transmitted across the entire network each time you hod
`0 need for it. Should you access a certain set of data frequentiy, it might be permanently
`stored on a server in proximity, and refreshed by the main server from time to time in order
`to ensure its currency (i.e. that it remains up to date).
`3. In the context of on Internet client/server application, caching really shows its stuff.
`First the network uses distributed cache servers to house the WWW information that users
`in y~ur region use frequentiy. As you access a Web site, your speed of access and response
`is improved because the data is housed on a server closer to you. The data then is loaded
`into cache memory on your client computer workstation. As you move forward, from page
`to page and link to link, your client caches the information provided by the cache server,
`with all of this happening in anticipation of your next move. As you move backward, the
`some thing happens, in anticipation of that next move, as well. Just in case you don't
`believe the client side of this story, go to Internet Explorer or Netscape, and click on cache.
`(The fastest way to regain space on your hard disk is to flush the cache which these pro(cid:173)
`grams dump to your hard disk.) For detailed explanations of specific caching protocols, see
`also CARP, HTCP, ICP, NECP, Squid, WCCP, WPAD, and WREC.
`Cache Array Routing Protocol See CARP.
`Cache Coherency Managing a cache so that data is not lost or overwritten. See
`also Cache.
`Cache Controller A chip, such as the Intel 82385, that manages the retrieval,
`storage and delivery of data to and from memory or the hard disk. Cache controllers may
`reside in either clients or servers. See also Cache.
`Cache Engine A cache engine is a carrier-class, high·speed dedicated Internet appli(cid:173)
`ance that performs Web content caching and retrieval. When a user accesses a Web page,
`the cache engine locally stores the page's graphics and HTML text. When another user later
`requests the some Web page, the content is pulled from the cache engine. This process
`improves download time for the user and reduces bandwidth use on the network. Here is
`o on explanation of a cache engine from Cisco, which makes one. How does the cache
`engine work? The cache engine communicates with a Cisco router, which redirects Web
`requests to the cache engine using the Web Cache Control Protocol (WCCP), a new stan(cid:173)
`dard feature of Cisco IOS software. The WCCP also enables load balancing of traffic across
`multiple cache engines and ensures fault-tolerant, foil·sofe operation. What ore the bene(cid:173)
`fits of Web caching? By reducing the amount of traffic on WAN links and on overburdened
`Web servers, caching provides significant benefits to ISPs, enterprise networks and end
`users. Those benefits include cost savings due to a reduction on WAN usage and dramatic
`improvements in response times for end users. The cache engine also provides network
`administrators with o simple method to enforce a site-wide access policy through URL fil(cid:173)
`tering. See also Cache.
`Cache Hit When the data you want is actually in cache. Thus you don't have to access
`your hard disk and your computing is foster. See Cache, Cache Miss and Cache Memory.
`Cache Memory Available RAM (Random Access Memory) or SRAM (Static RAM)
`that you set up to allow your computer to "remember" stuff- so the next time your com(cid:173)
`puter wonts that information, it can find it fast from RAM, instead of searching through a
`slower hard disk 1/0 (Input/Output) process. This high speed cache memory eliminates
`the CPU wait state. When the CPU reads data from main memory, a copy of this data is
`stored in the cache memory. The next time the CPU reads the some address, the data is
`transferred from the cache memory instead of from main memory. Novell's NetWore, for
`
`example, uses cache memory to improve file server access time. In NetWore, cache mem(cid:173)
`ory contains the directory and file caches, along with the FAT (File Allocation Tobie), the
`turbo FAT, the Hash table, and on open space for other functions. See also Cache.
`Cache Miss When the caching software guesses wrongly and you have to read your
`data off your hard disk rather than reading it from the cache in memory. See also Cache,
`Cache Hit and Cache Memory.
`Caching Sometimes spelled cacheing. A process by which information is stored in mem(cid:173)
`ory or on the server in anticipation of the next request for information. See Cache for a full
`explanation.
`CAD 1. Computer Aided Dispatch.
`2. Computer Aided Design. A computer and its related software and terminals used to
`design things. A CAD system might be as simple as computerized drafting tools or as com·
`plex as detailed layouts of integrated circuits. CAD systems often hove terminals on peo(cid:173)
`ples' desks and a central moxii:omputer in the company's main computer room. CAD ter(cid:173)
`minals ore often run over LANs (local area networks) or through telephone systems. The
`terminals ore often moved, thus having universal wiring and a universal switching system
`- a LAN or a phone system -
`is extremely useful.
`CAD/CAM Computer Aided Design/Computer Aided Manufacturing. See CAD.
`Cadabra In October 1994, Jeff Bezos wonted to name his new Web venture
`"Codobro" -
`as in "abracadabra." But his attorney convinced him that this magical
`moniker sounder a bit too much like "cadaver." Reluctantly, Bezos went with his second
`choice: Amazon.com.
`CADB Calling Area Data Bose. An MCI definition. An MCI System that stores reference
`data for various MCI Systems and reconciles MCI Colling Areas with those of Bell.
`Caddy The shell of on optical disc. Protects it from grubby fingerprints, and includes
`write protection devices. AKA case.
`Cadence In voice processing, cadence is used to refer to the pace and rhythmic pattern
`of tones and silence intervals generated by a given audio signal. Examples ore busy signals
`and ringing tones. A typical cadence pattern is the US ringing tone, which is two seconds
`of tone followed by four seconds of silence. Some other countries, such as the UK, use a
`double ring, which is two short tones within about a second, followed by a little over two
`seconds of silence. See also Ring Cadence and Ring Cadence Acceptance.
`CADS Code Abuse Detection System.
`CAE Computer Aided Engineering.
`Cafeteria Officing When on employer gives a worker the choice of setting up on
`office (desk, choir, computer) at home or at a central office. See Hoteling.
`Cage Antenna An antenna having conductors arranged cylindrically.
`CAGR Compound Annual Growth Rote.
`CAI 1. Computer Assisted Instruction. Commonly known as CBT (Computer Based
`Training). See CBT. See also CAD for a discussion on telecom needs.
`2. Common Air Interface. A standard for the interface between a radio network and equip(cid:173)
`ment. A CAI allows multiple vendors to develop equipment, such as radio terminal devices
`(e.g., cordless phones, cellular phones and PCS terminals) and base stations (e.g., cellu(cid:173)
`lar antenna sites), which will interoperate. The yield is a competitive (read less expensive)
`market for equipment. The British CT2/Telepoint system incorporated one of the first CAI
`standards. See also CT2.
`CALA Central America/ Latin America.
`CALC Carrier Access Line Charge. A per minute charge paid by long distance companies
`to local phone companies for the use of local networks at either or both ends of a long dis(cid:173)
`tance call. This charge goes to pay part of the cost of local telephone poles, wires, etc. See
`Access Charge and Carrier Common Access line Charge.
`CALEA Communications Assistance to Law Enforcement Act. Passed in 1994, CALEA is
`a U.S. low granting low enforcement agencies the ability to wiretap newer digital networks.
`The act also requires both wireline and wireless carriers to enable such wiretapping equip(cid:173)
`ment. See DCS 1000.
`Calendar Routing A call center term for directing calls according to the day of the
`week and time of day. See also Source/Destination Routing, Skills Based Routing and End(cid:173)
`of-Shift Routing.
`Calibrate To test and reset a measuring or timing device against a standard to make
`sure it is functioning carrectiy.
`Call Everyone has a different definition for "call." My definition is simplest: Two people or
`two machines ore on a phone line speaking to each other. That's a call. This definition by
`Bellcore (now Telcordia Technologies) of a call: An arrangement providing for a relation
`
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`Page 4 of 5
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`Hop Channel I Host Switch
`
`use ifs own routing knowledge to determine the next hop of the route, with the expecta·
`tion that all switches will choose consistent hops such that the call will reach the desired
`destination. PNNI (Private Network-Network Interface) does not use hop-by-hop routing.
`Hop Channel A Radio Frequency (RF) channel that has been declared a candidate
`for carrying a Cellular Digital Packet Data (CDPD) channel stream after a channel hop.
`Hop Count The number of hops it will take for a packet to make it from a source to
`a destination. In short, the number of nodes (routers or other devices) between a source
`and a destination. In TCP /IP networks, hop count is recorded in a special field in the IP
`packet header and packets are discarded when the hop count reaches a specified maximum
`value.
`Hop Off When you make a phone call on the Internet you can call from one phone
`attached to the Internet to another phone attached to the Internet or you can call from one
`phone attached to the Internet and, at the other end, go into a PC stuffed with voice and
`switching cards and which is attached to local phone lines. The process of leaving the
`Internet is called "Hop Off."
`Hop Sequence The carefully coordinated sequence by which radio transmitters and
`receivers hop from on frequency to another, hop sequence is used in FHSS (Frequency
`Hopping Spread Spectrum) systems. FHSS is used extensively in Wireless LANs and certain
`PCS (Personal Communications Systems) cellular systems. See also FHSS.
`Hops Term describing the number of times a message traverses different nodes.
`HOPS Hardwire Order Processing System.
`Horizontal l. H. In television signals, the horizontal line of video information which
`is controlled by a horizontal synch pulse.
`2. Descriptive of the side of a North American wire Distributing Frame on which terminal
`blocks are mounted horizontally; this is the side equipment is terminated on, as opposed
`to the "vertical side," on which cables terminate in vertically mounted blocks. In some loca·
`tions, frames of horizontal blocks only ore called Horizontal Intermediate Distributing
`Frame, or HIDF. Compare to VIDF.
`Horizontal Beamwidth See Azimuth Beamwidth.
`Horizontal Blanking Interval The period of time during which an electron
`gun shuts off to return from the right side of a monitor or TV screen to the left side in order
`to start painting a new line of video.
`Horizontal Cable Defines the cable used to link the communications closet /
`room with individual end user devices. Horizontal cabling stays typically on one floor. That's
`why it's called horizontal.
`Horizontal Cross•Connect A cross-connect in the telecommunications closet
`or equipment room to the horizontal distribution cabling.
`Horizontal Distribution Frame Located on the floor of a building. Consists
`of the active, passive, and support components that provide the connection between inter· .
`building cabling (i.e. cabling coming from outside the building) and the intra-building
`cabling for a building.
`Horizontal Interval The sum of Horizontal Retrace.
`Horizontal Link An ATM term. A link between two logical nodes that belong to the
`same peer group.
`Horizontal Output The amplifier that amplifies the horizontal output sync signal
`in a TV or monitor. The output runs through a deflection yolk. This creates magnetic fields
`that control tracing of the CRT beam sideways. A vertical amplifier does the same for the
`up and down tracing of the CRT beam. A TV's horizontal output frequency is 15.73425
`kHz. On some TVs you can.hear the high-pitched sound of the horizontal output circuitry
`when you turn on the equipment.
`Horizontal Retrace A video term. The return of the electron beam from the right
`to the left side of the raster after the scanning of one line.
`Horizontal Resolution Detail expressed in pixels that provide chrominance and
`luminance information across a line of video information.
`Horizontal Scan Rate The frequency in Hz (hertz) at which the monitor is
`scanned in a horizontal direction; high horizontal scan rates produce higher resolution and
`less flicker. Thus, the EGA horizontal scan rate is 21 .5Hz, while the VGA standard scan rate
`is 31.4Hz. Some displays now offer even higher scan rates, as much as 70 Khz. See
`Monitor.
`Horizontal Sync A video term. Horizontal sync is the ·40 IRE pulse occurring at the
`beginning of each line. This pulse signals the picture monitor to back to the left side of the
`screen and trace another horizontal line of picture information. See Interlace.
`Horizontal Wiring The portion of the wiring system extending from the work·
`
`station's outtet to the BHC (Backbone to Horizontal Cross{onnect) in the telecommunica- .
`tions closet. The outtet and cross-connect facilities in the telecommunications closet are con- ·
`sidered part of the horizontal wiring. See Horizontal Wiring Subsystem.
`Horizontal Wiring Subsystem The part of a premises distribution systern ·.
`installed on one floor that includes the cabling and distribution components connecting the :
`riser subsystem and equipment wiring subsystem to the information outtet via cross con- •.
`nects, components of the administration subsystem.
`Horn In radio transmitting, a waveguide section of increasing cross-sectional area used ta
`',
`radiate directty in the desired direction or to feed into a reflector that forms the desired bearn.
`Horn Alert HA. A cellular car phone feature that automatically blows the car's horn ·
`if a call is coming in.
`·
`Horsepower A unit of power equivalent to 5 50 foot pounds per second or to 7 46
`.
`watts.
`Horton A software program which provides an automatic method for creating a direc· !
`tory of e-mail addresses. Users con look up electronic addresses via a search key which can .
`be a fragment of a person's name.
`Hose And Close A pattern of behavior exhibited by phone tech-support people who ,
`spout a bunch of jargon you don't understand, ask you to perform a bunch of procedures 1
`you don't follow, and then abruptty hang up. This definition from Wired Magazine.
`Hosed The system is hosed means that it no longer works. The expression comes from
`what happens to someone who has has received the full force of a fireman's water hose,
`as in a street demonstration.
`Host l. An intelligent device attached ta a network.
`2. A mainframe computer.
`3. A computer with full two-way access to other computers on the Internet. A host can use
`virtually any Internet tool, such as WAIS, Mosaic and Netscape.
`Host/Remote Describes a scenario where the remote is a serving end office that
`does not have recording capabilities and, therefore, allows a host end office to record for it.
`Host Apparent Address A set of internetwork layer addresses which a host
`. J .
`will directty resolve to lower layer addresses.
`Host Based Firewall A hostbased firewall is a firewall system that includes a ·r •
`·i· .
`bastion host (a genera~purpose computer running firewall software). A host based firewall
`usually includes a circuit~evel gateway, an application level gateway, a hybrid of both gate-
`ways, or a stateful inspection firewall.
`~;,.,
`Host Bus Adapter HBA. A printed circuit board that acts as on interface between
`· ~ '.
`·. ·~.
`the host microprocessor and the disk controller. The HBA relieves the host microprocessor
`of data storage and retrieval tasks, usually inqeosing the computer's performance time. A
`host bus adopter (or host adapter) and ifs disk subsystems make up a disk channel.
`Host Carrier The cellular operating company a subscriber from another cellular sys·
`tern would be billed roamer charges.
`Host Computer A computer attached to a network providing primarily services such
`as computation, database access or specific programs of special programming languages. .
`Host Digital Terminal See HDT.
`Hos~ Interactive Voice Response A voice response system that can com-
`municate with a host computer, typically a mainframe. Applications which can be produced
`include bonk·by·phone, reservations-by-phone, etc.
`Host Name The name given to a mainframe computer.
`Host Name Resolution A mechanism that provides static and dynamic mech-
`onisms for resolving host names into numeric addresses. The Internet Nome Server
`Protocol accesses on Internet name server that provides dynamic name-to-number tronslo-
`tion (this process is specified in IEN 116). The Domain Nome Protocol accesses a Domain
`Nome Server that provides dynamic name-to-number translation (this process is specified
`in RFC· 1034 and RFC· 1035). A static local host table can also be accessed for name-to-
`number translation.
`Host Numb