Dashrath Nandan FCWMC Notes PDF

UNIT:1 lassnute Sashradan Date Page ECWNC 1ommunication : Communication is the þuoces st me...

UNIT:1 lassnute Sashradan Date Page ECWNC 1ommunication : Communication is the þuoces st mere emtiies rchanging into on. dignal behien. tus thusdg a meim Sowrce Medinn Destialon titvolution 30,000 BC et CommunicaBien. Q00 BC Q000 yrs Ao (6th Centuay Cave Smoke Cavier Pastal |Painting signas Pregons Syskm Nuuaen nkenet Teluion1elhea Radio 1933 1924 19 206 18 44s Emaie +Tert MUNage +Social Media.. 1992 199 7 * hlielos Communiation s olekd tothe thansmissien bt intomaton Ameng the node that ane net Connected', ybes : Radiouaues , MiKDLaue , ngtarnd ComnAuM0LAtien Callular Tramsttet (EM VWzv) Recoive Advantage: Cst eticvenes, Elexibiliy , haeaed ncaLALed AaniBl, deenibilit Erhanced (nmectiuity , trhnsed Uson Exbeuiene  classMate Date Page tElectxamagnulie Shectum Ihe EM lpectum is the tull ange sf EM HOdiatin. Jalavetenght Frequenyl IRadio MiÝtowauenkroned Vrgible UV 10-10 Jo-12 Ware m) length 10-2. 10-6 Jo-8 AM FM TV RADAR 540- 88 I6o0KH 08 M XEM Alavesi EM Wauesane creted asa esull VEbiatons betuen an electhic and magnatie fild' Elechie fel! Crest Wa veleng h(A) Grest bAmpltude Magnate Frough 4tisthe mumber sf emplete ycls s Keqalotnd ber unit tme Unit ’ Hz(Hert) avelemgth: dt is the bhysical lingh st Cne lomplele Gple o ditanceWave behutn &heat buccesit Ceas or troughi ofa kaue: fy feuany  classmAte Date Page amplhde :i Amblthude h the hulght f he uaue Bonds: he term' bands' teteos to Abecie hanges br Angment uithin he entie EMsþzcrum Bomduidth: dt Halens to the Hange st ugnle utthin a giuen band 'ot EMShectsum that a 0A Cemmunitatien Channl ton by Banduidh= Man freg - Min heg Phase : Phase Hekers to the Sbechie stoge s baition a L9 Antenna: n antenna isa deiice LAed to tuansmit 2 eceie EM Kaves dt Cet elocticat into tadio waues and Uie-vesa. tignal. "inimum antenna heighk, h= *Dikenont bands in Radio Spectrum: DExtemely leo freglELe) :{(3KH 1)Vey ler fheg (vF) :f3-80 kiz , long yange Comn' Nauiakion 1) Loo freg. ( IF):f= 30- 30o KHz, AM Hadib byoadcasting D Modium freg ( MF) :f=300 KH, -3 MH, cnnautical Commt VHgh byeg ( HE): f- 3-30MH;, Shortuave Hadies teleuiien v) yey H¾:{= 30- 300MHz, EM Hodio brcadcosking, V b HE: 300 MHz-36H, Telewis on mebilu bhones, GPS, Vi) Qupe HE: 3-30 Gttz, Radan, bafelite cemnunicaion- o EXtemy HF: 30 Gty- 300G4H , Adanced radan sytem.  dassmate Date Page 4EM haves ane tansuerse in mahne EM waues don't ned a medium to þaspagate Sped , lavelength , freguemcy ,. Amplkude ,Poloxigatin hey cay emengy and nomentum ignal i a nctin that ceneys intasmaton Qbet the behavios oh atibuts t keme bhemomemon. dtis an EM aues that Caies info thogh a 'meolium (kasstatin Spal Analeg spral D is coninbus Ame VayÛng-T 4 haue tus o) moHe States amd in binay form ) i s ually in ne wave fom tn the fom of guare waue - ) heublesheeding ane dyicutt: oubleshooting ane easy tv) ueslentnus Valus to tlses dicacete walue to epent data Hapsesent data )e Temp:, Presure, )x Votage ek Motor Sart Tib y ete. fime Qn the Bauis ek Fme Continus ine signal Digorete Symal  cassate Dafe Poge 3 On the basit of stnal kepcuntaton: Aexiodic Stynal Apeniodie Sgnal 4- On the basu of symm ehry i Evem Snal cdd Senal gag) Symmery abot S V about vOstcal mis >T *Elements of Elechronte Communicaton System Tnfo Tnput Tansniterf-anne|Recutieaahut Iransduce -Detinaton urce SouTce iamgducea |Noige TaamsmiHer " Channel/Medium " Receiver a collectien of clctonic 1) Transmitey : The transmitor is that Combenentt and ciuih conuenth he lctuital hipnal into a signal auable for tramsmisslon puer a giuen medilm. Made p f euclllatek, ampliess, tined aicuit kptles: a Mediuni Ihe comnunicaton chammel ci the medium by uhich alectseni bignal Aend hon bne platetoanehen  classate Date Page Uopes og Conmnunicaton Chamnel hiyeles austed Cooxa ohcal Radtio Pai Cable Cablej fbre feq:(hannel 3 ReceiVers : dn amamqement that ertact the mesage aom tamumited Mgnal at he sutput lnd af thannel and Hebuoduce it in abuitabe tom 04 the oaginel mesage NGiac Neie inCenmnicaton bytem afens to anylnwantel Ainal or diutunbene that intkere útth the tamsmisb 1)Thernal Noise : Generated by Handom thermal moion of lechons in a tonducto 2)Shet Aeae : Aloie due to cisceti matune f electsical (ToRechange cannies pasing thrcu_h a conducte 3)Transil-tine nbic: dwning fhe tansiten 4Afmebheie neie,naustial noise 5) ue heg./Eken Noise Pinay Communicalon Resouces DJhanuntted Pwen i the avenge pou8k the tangnitd gnal Chamnel bandudth udekined a the band ef freguenia  casste Date Page Khake Communiealon Tosmlnslogy t XBR yale : o Data Hakes i the amsunt ot data tramami Hecd n one Unit time * Baud rale: Baud Hake Hfeu to the.total no. 6f binalim tansmited im one becond Baud vae= bit rate No af bit pes baud *Atenuations t |MLooore i 3lesPoor 94t 4>| D 8) S)  linl,lMultpexing Lembenent clASSMAte cast binulane TDy Asynchrorous DEMUX a DatePagescress n SDM TV hemne3 dgeun Combineib and as Chanel 2 ChQn2e alows ldehutpeliry) signalinto signal Autput vadio Same CDM be sing tamitted to Namdan intotndebendendMultiblexing Dastnath hatmulple DEMUX that bne Mutplezing :Multiplexing sta in diuidid lsed by techniges deuie S signals (DEMUX TDM speat gemenat TDM Synchronous snaller, fbre banduidth T link, nchannels frequencychann sa Dijzionis ytial UNIT:2 ot of to CMUX, medium Diuision signals multple hetthansmission RAyltiblerer,Demutt'plenenWDM the of FCNMG data linkIMUXE ) Analog brequency FDM; number singe 4is the Single FDM Waue input n a a 1- 2.  dansmit tine TOM, in clasSHAte nssectiue used Statitial to do the which DatePage t ' ia ser orkstation SDMisknploikng a system n nst firud : multpe (CDH) cadé. Wni Asgnedta g sengle ue temmunicaton o frQme technigue each eueryduite knene data mot : DEMUX (SD) by : avaitable ullibexing ramea contains actieMultilexing allow a betucen kerueralser in diuided a in mdlots ane ouer dystm Multilexing is Alsotimeslots fom to -fbre ObHc Cablo tine Frane2 &lice to deuice sinultanesusly telecommunlcatien he uieless s reassigned & :TDM TDM channel Dieision daladuisien 5Sace-diuision f tolal the S4nchronsus bASynchioneus capacity let hich MUX that he lAer in TDM, 3.imethe tme nly 4Code- ised i Lact cn dataPach he In in  su. band frgwhiti LPF cAssMate tich sdigital of 9 low transm lach bypae þas, sutsut Cuwe DatePage bant leiceohersoranalog sigral suth Resbonse kcBstu bekuenChanneln banid Band. Poss Bands Guuard to di¡nal guand pas, a a gitng ackive, is insit Radio stibs in sw TLPE Ines, alleus tilt wtila as knewn Unsed into or high-pan, om ! flle, telebhane electrbnic fassive freguenciit peinoueslnneceHany tas heg.)to (Giical filter Circuit Vout OpHica TheQne i- In Chanmel) filter Filer Pass *ou Bands: pas Pass Applicato iltun Centain AFten of Jypes Low Lew ^A A A RC  YestoBand> Pas Stob classate R,C)as Shift Phase ign·ls arO5 -Bandwuldth DatePage high fugueny om Inkerchangd 2ARe bases takon 'ass High Friten Band +0°) +45 arcla = hichblockslaw s¡nal bee K,Reskston Qutbut filten, componente,haue Sheaken., Loud Abpicatloni Reacanee Cabacttve filter Qudio amplity *Hah usFillerpassand Capeciton equiljed'. Xc uith QARC formulag: highsignala V VLtage LPE, luo Vin Vout Óutput = Ho  fegueney a mmad allews pas such audlo dAssMAte othn. fhequemis as exfermal to such DatePage. thatteguencies Componenthllrelen Bamd Stop he amb Componen se Arrlen ciucit cicut. takes fe net basive tansiter Power at shecitic or active dbes tramsmi Frlletuses cllaos RF andd deuiusional inkarated ef FrIten-dt Diaqam *Jransmitter Block Band tPass Bonduiath embloy censlst nductess apacitss Modulator tuo Hhat discùminats the hheles AM elechonc. Madulat and Flter betueen oss and s and toi band band tansistor bouuer i-4bplicalion asan Pass bouer AcHive assive Bomd an ^ Pre Amblitud signal freg LPE Bamdis B ii) Gt Stpnal Aucio, t i) *  to it houd classmate Muliplien Modulaon Amie Power used tn snala bigraly Gub be feche hole freguaney beacons. DatePage to ignal Mation sing diaance Long audo DekcosAF sutbut Freg. mpostantniensage sast high canis Comnunicl. of Non-tineckonal Contol Hange asan genenae tansmiskien a fegueny bf the FHPFFM RF :tansmten trattic an madulatrih Sysk amtena Qenexales components. ’xplain each Alr- Qimple to blays fansmiting into bh DiagranmiIF Receiver Block |Osdilakon Local s Hece Atgnal Yadio, loofiint hansmiter AM By d Mixer theOMcillaos FM Ampltfier hamsmiHer : of AM Vdeo :Advantages b modulaton to Re AbblicatHon uithfon AM laue in bycadcast AM aeus Keceig amternia Lo RE Sl¡nal Üsed uaue RE Audio he  heceie to on haceien classMAte aplery uceion Gn Hebroduee enhance IF TF debends IF dshends an fromuaue Hadto t of kgualty DatePage. b RE broduesextacted st 4e abiltyReejonseto cuuity of sound uce.hetenodyne abilty " ucie juqunies output oscillao signalt thesi¡naly fregueny, t A) ane amplfled tnto barallel the as log )* slonals dntermediate hegueney(IF signal 2s weak uñwantd abilty of JO loca of defhined madulating tuned defines Ihe ef audio audio Chanacteristies amply Receiuing = : output a 0scilaos dtus :dt titHeject the (SNR dB utth he Convest iat the leal cnsliuty i ampliien: :Delecton *mboktant elechauiy iFideltty andCombined Speakor *SNR: Hker R  heceiued by heceie hecuve L sered classMate wihelen by transmiting "Yeceiving convert Sakelile geughahibase-anlemna n hetzived hamsmitted spimjesingle2u at DatePage. hegRF), con rammittuy4netghbe af hen omm in condthion P:erGrain a ih tansmittng ausa lsedbaue (w:» dß, Rhdo to -Dala by hautng he Gy in covened saion fomula lout desinec Jelecommunication9 unit Contel has idoalj calculate gain teunajecell its base *Fiss Transmisien Eguaton anea"ach cellatad 4Qnd have tundamental lnde ane sQuare to you preuideQeograßhical he Cellei nekuosks Sbuclne ACell actual Conmmunicatien 7 squar anantnna Cel " & Rdpsltation and tisa Collular fdes tett sage a)  ended anmlennas. egudisant Provfde same cAssHate talulaten: hecomm spechrm. aremininalt g. cells: limit thethat pate.Page cll aon sing no. nearby cells htgnly and' linited ekuconk celstolerable wthcommuniaation area tofal aajaend in i of ditance, giuen ’ lithin coNeage shape d Jhe Mebile-to-mebilecalis a combination s bhases enceunterecl in mebile Ontginated MO)and motle termlnated (MT)call.  alAssmate Date Page Mobile Originated Call Mobile Teminated Call THLRVLR 94 316 45 PSTNMSCK MSc allirySTNGNSC MSB`S "1MS Aend dialed no to BSS. MS 2, BSS Aend dialed noto MSC "34, MSC Checks VLR ; MS LA Calling a GesM subscbers Qlsued then MsC ask BSSto t2 foTwarcling call to GSMC allecate hesorcee ton Call- 3 Sgnal Sets to HLR VLR "5, NSC Youtey the cal to GalMSC 5 Reguest MSRN frOm "6GSMC HAutes the cal to 6.Fonwanad testonsible MSc to GMSC Lecal enchamge of Called UsezFoywand Cal to ewent MSC 72,Euuwn back tone s outd8,9 Get cwvent tatus 6t MS 9 10 kom callad user to NS 10,21 Via GMSC MSG Bss 12,13 MS amser 14, 1S Secwrity Check 16,14 Set us onnecten * RE Channel blay impotant ale inCau prssing 3 types GfRF Conbol channel Broodcast Control Common ontet Dedicated Conbol Channel hael Channel BeCH PCH > SAACH HFCCH RACH SCH AGCH LSDCCH  elassMate Date Page 1.Broadcast Contel Channel dheseaNe pointt to muti poiint channel ,which ane difined only for down link dirc (8rS to mobie Station) "BcCH : Broad Cast Conhol channel, "FCCH : beguency CorYechion channel SCH : Synchronigahion chamel: 2-Comnon Contbol ChanneliJhese are sheaitidas bont ene iecton to multipeint ,detich sberates erly inAces Channel " PCH : Paging Channel, RACH : Rondom AGCH:Accem Gtant hanmel 3 Dediated Contrel Channel i- Jhe4e are t l dubler pornt-t-þointchannelsUsed fer snaling bekuean he BTS anal certain MS "SACCH:Slewr ueciated Contro chamel "FAcH FAST Contslchamnel "SDCCH : Stand Alene dediated *GSM tters 3 basic types of Beies DJeleþhony Seuices Jhe abilties sfa Bearer beice ave uaed by a hlesemice to tansbont data Facsimile Shot A includesoice cally ideotert k text meKgA" i Beasen Seuices hese ane Aed Hheuough a GM þhene to Heceiek beño data - fplemntany Seruices : hese breuide adtionalto i) teleseries'and beares seruices- tincudes-onferening cal uaitng, Call heldl, Ca fonuandng, CaLL barning , Nmber ldentyicaten.  ASSACe Date ( Page *SNS Shavt Mlesage SenvBce t is aAimple beanen Aeice and ach as bi drectional albhaumeic baging deAuice ASMScan cary af mast 6Ñ chaHactens SMIS inwelues ahicijic etitis in the GSM netuLeki "SMS seHeice Centre (SMSO)- hansters meMOge Heceived from nternet to mabile Shart Mexge Entily(SNE):- Respenaite for praducig SMS anChitechure has been inblemented by C- DoT. VMS: Voice Mail Sy8em VMS BEHens functien f call answertng ckuze tn dyttn st poutde persenal ieie mailben o the dubscnibers VMS ntentaca uith MSC on El ines uing R2 ME/CCs # signaliý protocel ¢ GsM- Seuity ondVÊRI Encyption HLR0AUC (Home etuork |Sim Rouing Other nehworkssM,efixe) Vizited Node J G15M Secwrity Archilechure ’GSM is the mest becunedellular tole-cemmwnicatoz ’ GSM maintains end-to-end secuny y efalnlng  classmate Date Page f Gs Subseiben the Confdentfality f cals and ameayntymaintained he privacy o the comunicatibn i by asying incgptien al¡aithmna and fegueney hopng RAND SRES SRES A8 As Ke Engzypted Ke ASJata A5 Mebile SIM Base Staion GSM Authentcaton and Encryphon authenticatis 0Mcbile Station Authenticaion : The GS4 nehuosk ue of a challnge he identity o he bubscniber hreugh ttheNumberlRanD ) Aestonse mechanm: A128-bit Ramdom &ent to the Ms" he MS Lemputu the 32-bit Slgned Respense (SRES) based en enaytten Of RAND Aith auhenteahen authantteatien algorttm(A3) usng tndiulual Subscriber 10 Sianalling and Data Cenfidntialil:he SIM cetains Hd chbning key genenating algatm A3) that i sed to bcduce Hhe 64-bie ciþhoxing kEylke). encaypkd ueiee and dala communiiation betuaen MS e ietelak i aecenplihecd by uing thu cphening algeaithm A5). Ii)SubscHihen Sdentit, Cenfdentality: o ensune subsonihe fdentity enfidontally, the Tem7oaxy Mebile &ubscaiber 4dot (TMS) i used Once authehicahen R ncayption ane dene, the T^7SI Ls ent to he mmobile stahen JMSI Valid which n the locaten anea sn  classmate Date Page * Bluotooth Bluetseth a ued er shet-honge ubelbss woice and data cemmunicatten Jhe Spreadlng mthedl hat it ses is EHss(Eeguency-hopping ungeld Sjechum) " t follauH the pinclple s tansmitingTeciing data Ang adie ulaus" 4tiu ivelesz Pen30n al Area Nekuwork (WPAN) technolo9y * key Featwnes 8f Bluesooth Thz tansmiaien cabacihy 47 Bluetooth is 720 Kbps Bluctooth i uHeless duic " JA is lu-C&t amd hot-distance Hadio Communicaten 3ti Yebust and terible" 4 has Low- Power Consumpton Jhe basic architctune nit is Pconet XHatoy Bluetooth Frst Mobil l"0>bhne to ncucle >B:T 20BT 8-0 "1999 Bluetooh "Q004 |-3MbþS -O7MEps 1MpbS BT5.0 BT4-o 0I3 BMbps AHchtechue of Bluetootth MI M2 Pronet 2 Piconet 2 S) Scatternet  elAssMAte Date Page Jhe anchikechune of Blueteth deines tuo pe f Nehuaska a) Piconet: Jtisa tybe ot BT nehusrk that centains sne bnimay iode called Master node and Ghet Scconday nodes called Salue nodu he master conbelstning and cooradtnates Commni -Caten tutthin the þlconet? bScatexnet: dt utormed by slng uaniss ienets A laue in Dne bicenet cam act as masteh in another bicenet tBluetooth Protocel Stack APPicaHon TCS OBEX WAD SDp RE Comm Logical Link Conyot and Adapia ion Botecot (2CAÐ Link mamger Protocet (LMP)I Base band Link Contolle Radio 1- Rodio (RE)Layey dtspeifis details a air intentacky g-, transmit poweh. dt bentorms ModuldemadalD of daka into RESgnal  cAssHate Date Page A Bastband Link layeni- dt buntorms the connechon 2shtlishment Luthin a pionet , acldiesing, packet formak, tiningljouen Canhel 3"|LMP-t pentoma the management o the alreads establihed Links thich includes autentication and encayphion process 4.-12CAP Layen i-dt also knoon as hest Bf the Bluetootth þrotce stack-4 alleus conmunic? o ubber and leuen layers tt also penfarma Seqmentakion and mutilain 5. SDP ayen b- dt i Shot ton Senuie Discereny fretscel - 4t allsuti diuceuering berices auatlable en another deuice - 6- RFtemm Laye Rodio Frontend Comkonentyis a casle Hesacement buttecol-dt bsede senial tentace bw WARL OGEX +OBEX Qhjcct Exchang, it iaa cemminicatien brotocel to enthange Bhjectt behuen 2deuices " 8. WAP:- hlireles Acces Prohocel y sed tor internct acces 9. TCS- olebheny Cenbsl Aretecel þrsuide telefhorny benuices 10-Aliatton Layni-dt enable the user to inkenect uuith Appla *Tkbes Bluetooth Tn- Can Headze "Stereo Hegdget " Webcam |"Bluckooth-e9uibped printen "Bluetooth GiPS.  classMate Date Page * AdvanBages Dizodvantags D Low-CoB+ AEasy-to-luse deuicg - Jtcan be hacked y- Les becwe n) can also penehate thraugh walt Jt has sow dala thamgfer gake M D Used foy LCeiCe and data thangfer-t Doesrtt suphast Dutinq iv) Creates Ad-hoc connectfon ufhot any ires Abbliaton: 4t cam be ued in lseles headset, liselsPs P ANS st can cennect adiital Camea useku to a mebile pherne an tansjeh daBa In tems sf Videnay songs, phatagraphi, las * Bluctooth Powen Lewels Bluwtseth doines thee main peuer clases used by dauices BT Powe lax 1 BT Powe Class 2 BT Powey clas3 i) lOutbut boweH T& 1O0 Man- output bouwen t Lowest outhut pouOr MWfo achieve maxe ig 2-4mw that is lmw o 9eguireol Aamge iD oue Conhel ia.Mond-t opHnal No power contel reuired. -atory ) Dverage is 100 m.f 10 m Pewen tonsany?. H-ModeHate Lous O01 mnlw v)Min bouwexs Min. suput 1mh. bouers O"25 mw lonsumex eectoics Wreles micky hemete ike heodphones Contoly ete dala hanstea Kaybaard,ete  classMate Date Page ABlueBooth RSSI n blivelen Semsor Netuorks(hSN), thexe ae 3main pnncibleA ef meaAwenent that cam be lsed to hlain distance and to ebtan the bositon Gfbenser nade 3 main þrinciples ane i ) RSSI ii) Angle ot Artval i) Bepagatfon rne baed *RSSI Method 4t stands for Receivecl Stanal Steng th Intcaba ’ t is a mieasne that refresent theHelatie guality leuel ct a Buetoeth signal teceivd en a deice. Received PoweH= T+ansmited Powen- Path Los Node 1)K4 R3Node 2 X4 Y4 MNade Fixed Nade IFsxed Nod 2. ’Range: -100dBn (WeakSignal)odBn(Shong Signal ) ’hen RSST value s higher the signal becene mare Robust he signal is aluay beter Lsher RSSI Vale is Clese to O. >Fve ii maninum. lmited no of neiphbouxing nade: *Fumchionality of BT-RSST : Siqnal Strençthi- Se¡nal is always &tronges , RssIf. Stnal Qualiyi- tis better sthen no f sipnal Sbengh i Chamel hlidth:- RsSI Les, when Channelis hide hghar  elassmste Date Page * Abblicatiend : Rosnihy Deleckon, Sncoor Postiningk Nauigaon Connecton Monagemint Limitatien: Enutyonmenfal ntenhence, tncensitent Reading , Distance Estimaton. Bluetocth Raiing Mechanism E he breces by uthich tws BT- emabled duies establsea becwte cenmection. Pocex ’ Deice Discoveny nitation+Athegticatien Encaypien &key laenesD4Athenizaien Legacy faiing Sewre Siaple fring i Bluetooth Versieniu 0 Blt BT 2-1 Rlaler i) Secunt Potocel u PrN- -Cwwe Difie ElisticCuue based palring. Hellman (E CDH )" in)e PIN Code to authent 4 methodsi aust ups. -caton Numenic lombauision, Pam key Out- t-Band (O0B ) iv) Regue PIN Cade input Reguire pailng mehad. ) Usei: Legacy deuices Moclern deuicer ’Each deuice muut enter dtses Cnyptogphe dtuues PrNCodle yþainlngs laAuccestula nlyalgosihrna inclulet beth deuia eiens fer painng enter he same PIN COde. rethod based en deeice Capablitieg.  classMate Date Page *One at the main difenence bh 0WRAp4 and iRD5 SSP Acting iNRAP4: Support Legacy pairing(anhe enablecd or clialu.and it cisobled by cefautt) - Subbort SsPlCah be Enabled ox dlsable amd it is disaled by detault) NRAP5: Susbert Lep Can be Bnablad ox diabled and tii oisahed by defut Subþoh SSP(Enabled byDetaut and it cann't be disabed) Bluetseth Secunity Bluetooth Secwxity i esential to beuent unauttasj acceh, enswe data priayy Dnd þrotect usens frem *Basic means of Prouiding BT Secuits 0Authenticakon: Verjng the identity to cermeniccte of deuica hat uant ) Confidentfaliby: dtenswres that data exchangd belueen Gnly auhhonzed oleuics. i)AuthaFation i tt delmines hettexa deice has pemision to acces Apecitie seruies or data ateo paing and athetiaton.  is kauthonzatondlata Specicaton Jt secunis phene clAssate secwe- enforcid incaming BT the cleuis authwnticatien a to DatePage entered Sends all mesages acceu Bluetoothnon- BToleicet authenticaton Huta EDR luel Ler temety ta 2-0+ lnk-luue maltomed when to by mode. Seuice - earlie enly idemitins þuDutded Ihia8T euies toall hamhackesMtodlei 2: 3i Serie Levely : Reguires Regutves to ther se iStnding 1: upo Ohens Causes IME]Mid Töpalogy Managment Mode ModeEDR ModeEDR OA *Secunity Ihseatt:4ew chamel Broadcast measunes UBesMan-n-the- Secuncty Aubbanted Sccwnity 2-1+Secunity li lenel3: BTO-0+ 2: atacks Level Leuel i : Shanfing facking: BT Bluebugging *Seuity BluetoohBlucheeth Bluoteeth Svuice Fgginq Soice mode * s t Soic enly mode Glue i)Blu y DOS D ) iv) )