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`’ VERIZON EXHIBIT 1002
`Page 1 of 150
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`Page 1 of 150
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`VERIZON EXHIBIT 1002
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`DO NOT $8M?) FEES QR GDMPLETED FORMS TC) THIS AQDREES
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`Page 2 of 150
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`First Name! inventor Rocirigm 61" a1.
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`2282/3 09
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`PTOISBls-fi (11w)
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`'
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`REQUEST AND CERTIFICATION ““3 i“ ””3“” Ripariuezelal.
`UNDER.
`Title Modular Data Communication Equignmenl System
`35 11.3.0. 122(b)(2)(B)(i)
`_
`,
`
`
`
`
`l hereby certify that the invantion disclosad in the. attached application has not and will hat
`be the whim: of an application filed in another country, or under a multilateral agreement,
`that requires pubiicaiian at eighteen months after filing.
`I hereby request ihal the“: attached
`application n04; he published under 35 U.S.C. 122(k)).
`
`
`
`
`June 192 $901
`
`Date
`
`
`
`$ignmure
`
`Steven G. Saunders
`
`"l‘ymci or prihiad mama
`
`This request must be aigned in compliance with 3? CFR 3.3803) and submitted will: the
`; applicatlan apart filing.
`
`if applicant rascinds a
`this» nmnlpublicatim realms“: at any lime.
`Applicant may masclncl
`request that an application H012 be publiahed under 35 U,$.C. 12309), the application will be
`scheduled for publ’iaaticm at aighialm maraths fromthe earliagt claimed filing date for which a
`banafi‘c is claimed}
`
`if applicant subsequently files; an application directed to the invention diam-said in the
`attached application in another ccuniry, <3? uncle-n“ a multilateral lntamatimal agreement, that
`requires ‘publicaticln Of applicatiaw eighieen moniha after filing, tha applimht must notify the
`= Unliad fitates Patent and Trademark Qfiioe of 2»:th filing within forty~flva (45) clays after the
`. date of the filing of such familiar! or inhamailonai applicatian. Failum‘to do at: will result in
`abandonment of lhis applicafimn (35 U.8.{3. i22(b)(2)(6)(iii)).
`
`Burden Hour stalemani' This cailacfion of information iS required by 37 cm i 213(3). Tim infurmaimn la tamed by this: while to mquasi that an application hat km
`publishmi under 35 U 3 C 122(k)) {and ma P11) in pmmsa that requusl] Caniidenlmllty la gov-mad by 35 U S C 122 and 37 CPR 1 14 Thu: farm is estunalm!
`lo taka a minutes lo camplata This lime will vary depending upon the: naads of (he individual case Any wmmenls on the 31110qu of 1mm yau are raquurmi lo
`complete {his farm should has} sent la ihe Chief lnformalmn Officer. U 8 Pawn! and Tradamark Olfica, Washmglan. DC 20231: DO NOT SEND FEES OR
`COMPLETED FORMS T0 Tills ADDRESS. SEND TO Mammal Commissmner for mesta. Washingmn, DC 20231
`
`Page 3 of 150
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`WELfilSEaflESEUE
`
`Practitioner’s; Docket No. 2332309
`
`PA TENT
`
`IN THE UNITED STATES; PATENT AND TRAZDEMARK OFFICE
`
`In W. appliwtion 0f: Romigaez at, ELL
`
`(Ih‘mxme Notyetassigned
`Appiicarian N0; Ntflyetassigneti
`Examiner: Newer assigned
`Filed: Hemwiflw
`F01“: Maduiar 13am, Cnmmunicati cm Equip‘mnt 831mm
`
`Cammiseioner far Patents
`
`Bax Patent Application
`Washington, D113. 20231
`
`EXPRESE MAIL CERTIFIQA’I‘E
`
`"Expmss Mail" {aha} number ELM 51238255138
`Data 0f 1361302311 Inna 19, 2001
`
`Ihmaby state that the: fdflawing arm-had paper or “few:
`
`New Utility pawn appliaatim and fiasumems rei’arenced flwmin
`
`is hazing deposited with the Unifiad States Postal Sam/ice "fixpmss Mail Post: Office to Amiéressee“ wwiw
`under 37 CFR. section L10, on the date indisamd above and is addressad to the
`Ccmissioncr
`fur Pamuts, Box Farm: Agplicatim, Washington, DC}. 20.23 L
`
`Swarm (Ii Saunfim
`
`
`
`g M., . Mr)?
`
`W
`
`Signamm {if 31er5011 mailing paper 01' fee
`
`
`
`
`=..
`
`(Exgaress: Mail Certificawnpage l of I)
`
`Page 4 of 150
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`Page 4 of 150
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`:11
`
`E E«at!
`
`
`
`.
`
`inventor information
`
`inventor One Sivan Namez:
`
`Juan D.
`
`'Famiiy Namezz
`Postai Address Lina Oman
`Ciiy:
`State or Province:
`
`Pasiai Qr Zip Codex
`Citizewhip Cauntry:
`
`Rodriguez.
`2105 Bent Creek Mamr
`Alpharefia
`GA
`
`30005
`USA
`
`inventor Two Giver: Mama:
`
`David J.
`
`Famii’y Namer:
`Posted Addmss Line; Omen
`Cityx
`Siaie or Provincax
`
`Pasta] or Zip COGQZ;
`Citizenghip Country:
`
`Egrman
`200 Fewer: Meme
`fiwampssott
`MA
`
`0190”?
`USA
`
`inventcr Threa Given Narnia:
`
`Jamaa E3.
`
`Famiiy Namex
`Pasta! Address Lima Climax
`
`Lakin
`10015 Bafikgide Drive
`
`Gityzt
`Siam or Pravincaz:
`
`Poa‘iai or Zip Cedaz:
`Citizenship 0014mm:
`
`Hawaii
`GA
`
`30076
`USA
`
`Correspondence information
`
`Name Line Qnex
`Name Linea Twas
`Addmss Line; Two;
`
`Cifiyx
`Siam or Province::
`
`Postai or Zip Cedezz
`Teiephona One:
`Faxx
`
`Eiectronic Maiizs
`
`Appiioaiiun infmrmmim
`
`Title Line (Met:
`Title Line Two::
`Total Drawing Sheets::
`Form-ai Drawings?::
`Appiioa‘éion Typez:
`Dacha: Numbem
`
`maven Ci. 8m: riders
`
`Brombmg & Sunsmm LLP
`12$ Summer Straw;
`Boston
`MA
`
`02110-1613
`
`(617) 44843292
`(617’) 443~0004
`ssaundersfsébmmsunioam
`
`Modular Data Cammunicaiion
`Equipment System
`8
`Yes
`Uiiiiiy
`2282/1fl9
`
`Representative lnformaiim
`
`Representative Customer Namibian:
`
`002101
`
`Page 5 of 150
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`Page 5 of 150
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`

`Continuity lmformation
`
`This, application ig a::
`» Appficafion Omen
`Filing Data:
`
`Confinuation
`
`09/753,014
`61 “02-01
`
`
`
`Page 6 of 150
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`Page 6 of 150
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`
`
`
`IN ME. UNITED STATES PATENT ANT) TRAIEEWRK DFFICE
`
`APPLICATIQN EUR UNITED STATES PATENT
`
`FOR
`
`MODULAR {DATJE CUMMUN'ICATZGN
`
`EQUIPMENT SYfiTEM
`
`Invamtors:
`
`Ium C). Rodriguez
`2105 Want Greek Maxim
`
`Alphamtta, (3A 300%
`
`{David J; Barman
`200 Fmem Avenue
`
`Swampsmtt, M2155. 01907
`
`James; I)” Lakin
`10015 Bmkside Save
`
`Rogwell, GA 30076
`
`Atmmey Docket: 21282./ 109
`(132mm)
`
`Attmmeyg:
`BROMBERQ} :32: SUNSTEIN LL?
`12.55 Siummer Sweet
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`1303mm, MA 02110
`(617’) 443»9292
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`émmxmwm-
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`~31“mama!
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`June i9, 2001
`"mar”! m 'I xrwzcr:
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`MODULAR 'DATA COMTMUNICA’I’ION
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`EQUIPMENT SYfiTEM
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`PRIQRITY
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`10
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`15
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`Tim application claima pxiority from US. patent application lumber
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`09/ 753,014, filed j'anuary 2, 2001, and entitled, ”MODULAR DATA
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`COMMLWICATIQN EQUII’WNT S‘JE’STEMJ’ The disclostwe 0f that application
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`is; inmrpma‘ced hel‘fiifi, in its»; entirety", by referwce.
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`HELD OF THE INVENTION
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`The hwen’cion rala'teg generally to data trammiasiwn ne‘morks; and, mare
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`parficulafly, the invention mla’sea it: data cammuniaatimx equipmant for use by
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`data temnjnafion equipment.
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`BAfiKGROUND OF THE INVENTIQN
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`Different network services, such as cable teiavifiimn and teieplwne
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`aarv’icm, traditionally have: been developed far use over different typea {3f
`mfimrks., Fm“ exampla, tatephom serviceaa traditw'flafly has her-:11 develaped
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`amuncl the: public: switched telephone neiworlc (the: ”Pfi’l‘N”), "while came
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`televiaian sewices imditiouafly have been demmpad amunfi the cable television
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`nemmk.
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`T0 provide a nefimrk service, a 3:113ka access device {mmmmfly known
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`in as ”Data Cammmficatiam Equipmeni" Dr "UCZE’G cammmily is mad to
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`connect a netwmrk device {632ng a telephom car tealevisiom) 1:0 the: newmk" Mere
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`particularly, fine: DCE provides matwork devices known. as; ”mafia Temfina‘tign
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`Equipment" ( ”DTE”) with access. in their undmiying network. Fm: additionai
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`informatim reiatmg to DC‘Es and [31313, see film family of standards; relating t0
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`recommmdad Malachi-$232 (often rerfm'reci to as “RSMQSZW, which is a widaly
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`“Wm.,
`1”4—195”:w.._v,
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`meat fitandmd intezrface appmved by thef Electronic: Ilnaius‘mm Ailziance (”BIA”)
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`far camecting mrial fie‘vicegw
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`The above nomad inttemeiatiomhip bemecm gearvica ami flatwork type has.
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`caused ”the netwark Service industry ta rim-slap network accems equipment
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`(DCEss) that pmvidefi a apmific service over its mtmsspmmiimg traditional
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`network Only. COfl‘Eilmixxg with the abmve example, the provision, of cable
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`televifiimi sservicefi commrmly raquirea we 013a cable conversion box ("cable hex,”
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`which ii; a type 0137121675.) {that provides the! direct calmec’cion t0 the cable network
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`In a manner similar to DCES for when“ types of memorks/ fiewices, the cabie box:
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`typicaliy incimdes medium iiiterfmza circuitry fur cordomfing data ‘tmnsmissimm
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`mm the apmificmmns required by cable nehwm‘ks (agq the well. $310M DOCSIE‘;
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`alandmciss, disacuased herein), arid. servim delivery cirauitry that pmvicies the
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`highar ievel televizaibn services ten 23. mmectad télavigion (lieu, funcfimns perceived
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`by the user 0f the DICE). Among Omar fimctioms, 3.1111131 Service dfllivezry Circuitry
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`may provide acceas to a selectmfi, set of television gta’trimm (mg, baaed upon. a
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`user’s submripfion to a cable mmpany), and channel mapping fmxct‘immfity that
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`maps a cam-e channel in a diamxel on 1:116 attached televisimn.
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`In recent yem'fi, haweverr, the tremi has: been to provide a aingle service via
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`any one of flamemuss diffemm ”types; Of netwmkag‘ For mample, telephone
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`26)
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`sarvices currently can be delivered via the circuit aswitched tezfimology in the
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`PSIN, (:3): via a broacfibm'xd network, such as a cable uetwmk 0r fibex Optic
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`network. Acmrdgingly, a single DCB 1131‘ use with the talephnm aervfims must: be
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`produced for was? Wiiih each na'm'ork/medimn type‘ Fm: example, a sepmam
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`teleplmny DEE must be!» davelmpecd for use with eatfix of cabka mtwarks, £er
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`optic flatworm, 'wirelwg networks, etc: “ .
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`. . With the: pmlifemtioxt of mamOrk;
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`services and "bmadbami types/11,333, this xeqafires a rather ’W’idé‘: variety of DCES
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`for each service, and far each ne‘twmrk type‘ Although wrmntiy necessary, this;
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`iq‘
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`June 19, mm
`W???” mu 1 £7”? «A
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`duplication is inefficiemt, and masses relatively high daploymem mm; for various
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`network services; and natwotk types“).
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`SUMMARY (3}? THE INVENTION
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`In accordance with one 2131330? of like haven'lzion, a nelwork inéerface unit
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`includas an interface mmdule for lximslafing $119353;ng {transmittal bQWGafi am
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`013 a family 01" differm‘xf; typms 0f sarviae dalivery unitsl Batik type (:1? mwicse
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`delivery unit provides a aercBrk service that“ is different than the naiwork
`Eerfiiim provided by ’tl‘lé} gather typea of sezrvice delivmjr units in lhfi‘ family. The
`wwice delivery unit tormented to the netwmrlc interfaca tmit pmcesms messages
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`recelwzd in a {mat format. The: mhvm'k mteflace unit lbw; mclualm"; a medium
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`1119:11le configured to prmess data for tramwisssimx between {m given. medium
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`and the: Smwim afieli‘vary “limit, and the: intarfam madule. T1163 medium madule
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`transmits megsages- ioward the service delivery mull: in a second format The
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`interface mmdule is; caril'igumd 1‘0 recaive magsageéa immamitted behveen the
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`medium module and lime garvice delivery unit. "ll-m inmrfaca module is
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`comfigured to translate maggagéas from the samml fonnat to the that Emmi.
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`if)
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`15
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`30
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`In Some embodimemissf the sarvice: delivmy unit mammng mesmges 331 the
`firsfl; farmat, m1dthemedium mddule pmmmm massaages receivecl in the amend
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`furthest. Acmrdingly, the: interface: mociule also is; configured for txmmlating
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`messagw from the first format m- the aemmd famat.
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`All the: different types 0f sewiw delivery units in the family may process
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`25
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`data in the: first format, 01: only (3115: gape: of service delivery unity may macaw
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`data in the fimt farmat. In the lattear case, the 0mm: tygtas 0f Sfial'Viflfl délivery unita
`in the family procem clam 2137‘: diffamnt fwmatsl The given medium may 13% a
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`breadbancl mediunm such as fiber mpfic temlmologgr, (3312319 techtmlogy, or digital
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`subsaribm" line: technology. The meiwmrlé gervice may include at leagt one 0.?
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`Jame 19, 2001
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`feieyiwny, data 8ervice, fl'LIdiO wrvice, Vim} service, and Virtual} ?rivate
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`Neiwmk service.
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`Thea mtwork unit interface 21130 1my include: a connectm: fax electrically
`and physically connecting it; the mwim dalivary unit. The: (30151116,:ch i5 aamgla
`size mat corresponds to the aim of commcmm om each «of mg types of wwice
`delivery units in the family. Amaug «tamer thingss, the medimn module imludes a
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`network yhysical layer and media couirol module. The» mtwnrk timerface unit
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`preferably 13 physically mpamfed from the aervice delivery Emit. Thea sewicg
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`éeijvmr unit and netwmk immface unit cmgeram m act as; dam commmmiaation
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`equipment for (jam Eerminal equipment
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`In accordance with exam-ma]: aspaci: 0f the inventimfii a servirze delivery ‘umit
`for providmg a network mrvice cmpmziws with a neiwmle‘: {interface unit 13::
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`fmm‘ticm as data, iermitmtimm equipment The mmtwmk infarfam unit is time typsa
`of a plurality of dififeremt types af memork intar‘fiace unitsga» Each ‘tyfbe {3f 1%:ka
`ifiterfam 11mm; cmmecfion imgic‘: for cmmemtmg 4m a network medium that 13
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`diffemni: than the netwmk madiums to Which the other types of neiwork
`inmrfacea 13mins can mum-act The netwmk Limerface: unit pmm‘zames; memages; 331 a
`firesf farma’c. The service delivery mfit thus, hacludes a netwmk service madam
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`that pmvides the": network mrvice, and an imerface: moduie for intercepfing and
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`20
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`'lmanslating meaaageza transmitted, betwmn the nefwmk aervice 1110de amt! file
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`netwark interface wait. The nemmrk mwice modula transmits; messagea toward
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`the netwm‘k interface again a gamma fwmat. Tim interfam mmmfla is
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`canfigumd m translate mesaagefi fmm the semnd famiaf m the firgi: fmmat
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`In anmrdame with Omar aapects of this»: inventimn, a "modular data
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`mmmunica mm eguipment gystézm inciuda5 a family 0f ciiffamm Wes 0f
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`network interface: mm, a {jammy 0f diffarem: fypeg 0f aervice delivery units, and
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`an interface mnfigm’ezd to canvert the farmat of messagas tramufifled ”between
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`any one typa of $19: netwcsrk interfaca units and my One. type Of the: gamma
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`Sum: X9, 2001
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`delivery units“ Each type of me {work m‘lzezrface unit has; mnnectimn logic far
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`mmmting int} 21 11(22ka medium that is. different than the cmmecflmn media 11:}
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`which {film other typezs 0.1? neiwm‘k interface 1.1mm can comect 13:1 :3 silmlm:
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`mamwr, we}: ’2pr 0f service: ciglivcary unit pmvides; a network aérw'ice that is;
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`(iiffemnt than the service proviciieci by the other typas of smviw dalivery unit&
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`The mama}: interface units area configured ta communiazake W‘ifih a1: leagt 0m:
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`aervice dalivery unit via famnatted mafia-mama that, m»: nowd above, am mnver‘ceci
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`by the interface.
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`20
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`25
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`BRIEF DESCRIPTICEN (3F TIE-IE DRAWING8
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`The. {Oregoing and, advantages of Em: invention will be appreciated mare
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`fulIy from the {allowing amber dascripfion thereof with referenw to the
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`accmmpanying drawings wherein:
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`Figure 1 aahemaficafly ahmws an exemplary network that maybe used in
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`mmectmn with ifluaimtive anfibodimmts; 0f the invmtimm
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`‘
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`Figure 2 Behematimfly shows, a .nmdular mtwork amass gysmm
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`canfigmed in amordance; with illusatmtive mtnbo-dimeh‘its of the invention,
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`figuraii’: smhemaficafiy show3 the modular network amam system shown
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`in figure» 2 in which an interface is lmcataci $01631}? cm a miwork: inmrfaca unit.
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`Figure 4 schemaiically Shows the modular nefiwmk access system {ghown
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`in figure: 2 in which an": interfa ca 3.9 iom‘ceci 55019313? cm a mwim deiivary unit.
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`Figure 5 3c}: emafically Shwws; the moduiar nehvm‘k mews system shown
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`in figure 2 m which an simerfaw is; dispersed amosg a netwczrk intarfam uni-t anal
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`31 Serving deliva unit
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`Figure 6 mhematically showa a family of network interfa ca minim, a family
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`of service daiivm'y 2mm, and their standard ceamecmm.
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`Figure 7 mflnematimliy {shows a gpamific implememta firm 0f the mart/mt};
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`access; 3y$te2m shown in figure“: 2.
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`June 19* 200}
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`DESC‘RII’TION OF ILLUSTRATIVE EMBODIMENTS
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`in illustrative embodimemts, a network access syfiizem includres a family of
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`different types; of I’Lfii‘WflTk interfaca mitts that each can mopemte with 31113? Gm
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`type of a family 0f different types of service dealivery umts m act as data
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`commmicatim equipment (”TECH”) Tc; that end, each type 19f network interface
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`unit and service delivsary unit i3 bath mociular and fxmmfiwmlly intiependent
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`Accmrdingly, any type (31" nam'mrk interface unit prefarabiy can physiaally and
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`eiectmicafly connect with any type: 0f service delivery Limit m provicie complete
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`D613“. functionality The: disalusead neiwerk access Sygtem thus i3 configured ’m
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`permit cmmrmnly wed data imminal equipment; {6.32, an Internet telephone) to
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`execute various 112-ka gerrvicefi aver variom mtwark types. Details and
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`filustrative (examples are: discussed bra-10m
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`Figure 1 fichematically ghmwa an exemplary neiwcark 10 that may 1392 usecl
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`in canned-fan with iflustmfiva embmdimenm of the: invention. The fiéWka 10
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`incluniea: a local netwmk device 12 that mmmunicates; with one 013 mare cf a
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`plurality (:31? different remote netwcark devicefi 14: via {he Ethernat '16. .Amorlg
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`other thing-a, the invited neimork device: 12, may ha a compute}: fiystem, I?
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`teleyphmm, or matwmk applimmca. To mnnec’s to that Intemet 16, the local network
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`clevicez “12 33.5% a, network 3:.ccess System18 (noted abmva am} CiiSCHSSESd in detaii
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`below) to com‘xeat to am Internzat Barvim Prcwicier (“1511’ 1310”) via somia 'natwork
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`medium 22 (21.139 mfmmd m herein as; ”neiwm'k type 2 "’). The meal nativmrk
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`(Lie-Mm 12 and mews sysi'em 18 are ghawn am being local hard at: a customar’s
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`premsea, such :15 in a singfe: office.
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`The; network medium 22 can be any knawn medium currently“ used in that:
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`art. Anmng tamer typas, the network med-imam 22 may "13%: a convanfimnal missted
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`pair (3.3., teleyhmna lima uwd for a Digital Subgcrifiber Line), cable Erma, fiber
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`mptic: liners, a Wireiws madimm (raga, 'Bluetooth), 0r 501mg mmbimation thereaf. A53
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`‘Sid?
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`.mm
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`June 19, 200k
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`known in the art, data tramsmisgsions acmsss each Wpa of network medium 22
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`1111151: comply with a ssfamiatrd pmmco‘l. Far example, if the: rmtwmk .me-siium 22
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`is a cablé neiwmk, then tranmxisgian amass me: medium 22 must comply wikh
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`some weep ted cabli'z netwark data transmission grandam, and: 21$ the "TD-am Over
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`Data-Over«-Cab1e Sawicze lntearface fipecifim titan.” For addifienal infarmaflon
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`mlating in this Standard, see ”DatanOver—Cable Sewice hrtfirfme fipecificatfimxs,
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`Radio Frequency Interface Specifica‘mn,” much is a cooperative affart mud-ex the
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`direciiun of Cable Teievisian Laboramries, inn, with a cmpyxight M1999 anti
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`2900 and écacument; C(mtrol number 5P~IW1v1*1~104-«0{30497, the: ciiaclasure of
`
`whim is mcwrpomted hemm, in its enfimty, by refammce. This maeczificatiun is
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`camorfly raferwd to in the art by the acrrmym ”DQCSIS.”
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`Although the mfwmk mmdium 22 is slmwn schematically as a aingle
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`elemm’c, it may jnclucia two or more sapamte and. distinct Wes of namQrk
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`media 22. For example, the network medium 22 may hldude a cable network
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`anti a geparate fiber optic network. In math case, the amass aystem 18 provicies,
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`mamas to bath types of flatworm.
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`Figure 2 schfimaticany Sh9w3 additional details of the: madam; sys’cem .18
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`shown, in figure 1,. Specificafly, the access system 18 includes one unit 0155:
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`fanfiiy 9f ciiffemnt fiyp e3 m3 fihpmved neiwm‘k intarfacev units that pmvme the
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`necessary physical 321er ccnwrsiom and / or signaii pmeeafiing for transmigsion
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`amasa a given network meciium 2,2, amd «me unit of a family of different zypes 0f
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`service delivery units 28 “that pmvide the mammary lugic fan.“ permittihg a givan
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`network service to be performed by the network devim 12. In aziditiczsn, 'tha
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`accesa systeam 18 21150 includes aiastandard interface 30 for iogiczally cannecfing the
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`'rletwork interface unit 26 wifla me fiervice delivery unit, Dflfafla of 'Ehaeae {three
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`different compwnents 0f the access system 18 are: dismasefi, baimw, It should be
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`noted th at in some embodiments, the: neiwork interface: {3:111:53 2.6 my ”be referred
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`June 19, 200‘}
`RQRWEMMH'M‘W
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`15
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`20
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`m a5; netwmk interface nmdules. in will either emfbmciimentg, flier aawiczte delivery
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`Emits 28 may be referred to as; service deiivery Inadulefi.
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`In particular, the network timerface Limit 26 inducifls a medium madme 32‘
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`having hardware and Safiware for impiememing the appropriata phyfiical layer
`
`and medium comm} pmmmeé‘; required for trmwmitting am messages EICTQSS
`
`the given nemark type 22. Stat’ad another way, the medium moduie 32
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`implements the underifgdng specificafion for transnfi fitting data across: the netwark
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`medium 22 m which fit: is attacheci. This functionality/'15 independent of the
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`aer‘viae being pmvkied by we servica nielivery unit. The medium module 32 may
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`include a single elememt, m: a plmality of diffarmi: devicas/modxflea far
`
`mplementing the required ftmction. By way of exampla, if, the network medium
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`2213 a cable netwwrk, than the: medium mochfle 32 nmy include the hardware
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`and 60ftware for implementing the DOCEIS standard (see figure 17, dies-tugged
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`balow).
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`Of comma, since the new/ark interface”: unit 26 is; but Que type in a family of
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`diffemn? types 04? nemork interface 11mm 26, than a different type (if matwmk
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`interface mm: 26 may be: constructed fm‘ each (3f variwus: different namm-k types
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`22. Accarclingl’y, network interfaca units 26 can be magmwrad f0}: use with cable
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`flatworm, Msteri pair netwmka :impizsemenfing a digital mbgcx‘ibm line (”ESL”),
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`fiber optic networks, and Wirelesaa mtworks, among othem. Tim appropriate
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`nah/var}; interface unit 26 than is aalecmd far 3186? in the access ayatem 18 based
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`upon "Elm nemrczaz’k type 22 1:0 wifich it is cannected» In SOI‘HE embodimenfs
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`(difiwssed below), multipla network mire-flaw units 26 can be used in mnjunction
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`wifh (me or mow aervme delivery units 728 Wiflfim a singie 'HCCEESE? System 18.
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`The service: delivery unit 28 mdudfis a netwcrk service madam 34 far
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`inermmzing the local netwmk device 12 to execute a xzefiwork 5591ch via the access
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`Wfimm 18. A53 discusgecl in greater detail. by axmmpie in 33 gum ‘1", the netwark
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`sewice mandala 3% includes; hardware and / or software to pmcem specific
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`*02.1%
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`June: 193 2001
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`.23:
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`._.._..‘_._L‘“mafia”.-::';..,....‘”we
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`messages for implementing a givem mmmrk SETViCG: acmas some network. Of
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`marge, the mtwwrk service medulla 341: provides; the given sermice ifldependenfly
`£315 the type (31" mefiwmtk medium 22 “to which the mews 3375?:9111 18 ifi connected.
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`As; noted above, exampiiea ()1? the nehvm‘k service mofiule 841; and the aervicres:
`
`delivery units; 28 are digcusaed below with refelxence: ta figure 57’,
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`Each diffemm typa m’ network interface unit 26 may promas (£311:an a
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`differrem‘ {01:1th than {Em fmmats meal by when: types of net‘wark mtexface 11mm
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`266 More partimflafly, a natwork interface unit 26 far use with a fim’t: netwmk,
`
`type 22. may remiva- mad 'tramsmt messsagas; within the access gyrstem 18 in a
`different format than a network interface unit 26 ‘khat is configureci for use WM“: a
`ciiffamn't nemnrk type 22. In a similar manner, each cfiffment type of service
`delivery 12,11in may process data in a different fomai: than the formais mead by
`other typms 0f servim delivery unim 28. T1152 mmfiace 30 thus converts messages
`tranmtmmd between the fiervixze delivery unit 28 and the network inferface unit
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`26 into an appwpriam formats that is»; undzerstanda’ble to the recaiving meiwmrk
`interface mm: 26 m“ fiwvim delivery writ 28.
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`Figures; 36 schamticafly ShO‘W several different types; of interfaaeE 30 that
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`may be used to convert mesaages forwarded beMean the network interface 1m:
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`26 mm the savervice delivery unit 28* {1:1 ali such figurea, messages are
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`adlanmticafly ghown bemmn fixes