atm physical layer
TRANSCRIPT
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7/28/2019 ATM Physical layer
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IPE Zhysocig giylr
Citlfarozl` obta twa pirts=
Pribseossoab cabvlrflbcl Nubctoabs %obcgu`lhli`lr lrrar cabtrag' Clgg ritl `lcaupgobf' clgg`lgoblitoab' scriedgobf"
Zhysocig el`oue @lplb`lbt %toeobf ib`sybchrabozitoab' lbca`obf ib` dottribseossoab"
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IPE physocig giylr
Pribseossoab Cabvlrflbcl (PC/ Sud%Giylr
Phl nubctoabs an thos giylr irl=%%
Hli`lr lrrar cabtrag Clgg ritl `lcaupgobf Clgg `lgoblitoab Clgg Scriedgobf Pribseossoab Nriel I`iptitoab
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7/28/2019 ATM Physical layer
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Hli`lr Lrrar Cabtrag
Phl slb`lr caeputlr thl chlcksue avlr thlnaur dytls ib` pgicls ot ob nonth dytl"
Phl rlclovlr chlcks nar thl lrrar `onnlrlbcl" HLC his twa ea`ls an aplritoabs= Carrlctoab
ea`l ib` `ltlctoab ea`l" Phl lrrar cabtrag pracl`urls ab thl rlclovlr
so`l `lplb`s ab thl ea`l" Ob carrlctoab ea`l' Phl rlclovlr pravo`ls nar
sobfgl dot carrlctoab
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HLC
Ob `ltlctoab ea`l' abgy lrrar `ltlctoab os`abl ib` igg clggs woth lrrar irl `oscir`l`"
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7/28/2019 ATM Physical layer
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Clgg ritl `lcaupgobf
On clggs irl ta dl tribsnlrrl` avlr isybchrabaus physocig el`oue ' noxl` buedlran clggs hivl ta dl tribseottl` plroa`ociggy
Vhlb uslr `alsb t hivl ibythobf ta tribsnlrthl `ueey clggs irl usl` ta nogg toel sgats"
Obslrtobf o`gl clggs iggaws ritl an autfaobf clggsta eitch thl gobk ritl"%CT@"
O`gl clggs cabtiob splconoc dot pit tlrb"
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7/28/2019 ATM Physical layer
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Clgg @lgoblitoab
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7/28/2019 ATM Physical layer
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Clgg @lgoblitoab
Pa o`lbtony stirt ib` lb` an clgg' PC giylr`lgoblitls thl daub`irols an thl clggs"
Lb` an abl clgg o`lbtonols thl stirt an thl blxt" Phl pasotoab an thl sudslqulbt clggs cib dl
o`lbtonol`" Vhlb ot os slirchobf nar clgg daub`irols%hubt
ea`l Vhlb ot nob`s carrlct HLC woth syb`rael
eitchobf woth nonth dytl ZTLS_BC ea`l"
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7/28/2019 ATM Physical layer
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Clgg @lgoblitoab
On HLC an igg clggs naub` carrlct thlb ot eavlsta S_BCH stitl"
On rlclovlr rlclovls glss thib IGZHI ba" an clggs woth obcarrlct HLC ot rleiobs ob S_BCHstitl%lbsurls rirl dot lrrar `als bat lnnlct clgg`lgoblitoab
Ib` intlr IGZHI ot ifiob chibfls ta H\BPstitl"
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7/28/2019 ATM Physical layer
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Clgg Scriedgobf
Elchibose usl` nar slcuroty ib` radustblss" \b`lsorl` pittlrbs ob `iti os lxchibfl` it
saurcl ib` chibfls irl rlvlrt dick it thl`lstobitoab"
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7/28/2019 ATM Physical layer
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Pribseossoab Nriel I`iptitoab
Phl eippobf an clggs obta i nriel` structurlib` cirrol` avlr i bltwark os kbawb istribseossoab nriel i`iptitoab"
It `lstobitoab thl clggs cib dl lxtrictl` nraethl structurl ib` `lgovlrl` ta athlr giylrs"
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7/28/2019 ATM Physical layer
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Zhysocig El`oue `lplb`lbt(ZE@/
9"Poeobf ib` Sybchrabozitoab%Ob ar`lr ta carrlctgyrlclovl ib` obtlrprlt dot pittlrbs thl toeobfrlgitoabshop os ta dl eiobtiobl` dy rlclovlr ib`slb`lr"
Lxpgocot toeobf%Dath eiobtiob i cgack woth sielnrlqulbcy"
Oepgocot Poeobf%igtlrbitl eisk obvlrsoab4"Lbca`obf ib` Pribseossoab%Pwa `onnlrlbt vagtifls
ar nrlqulbcols irl usl`"Ob nodlr aptocs%Idslbcl ib` prlslbcl an Zhatabs
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7/28/2019 ATM Physical layer
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Zhysocig Giylr Stib`ir`s nar IPE
Pwa eiob cgissls an stib`ir`s=%
9"Z@H%pglsoachrabaus ofotig holrirchy%twasofbigs accur it blirgy siel ritl%twa bltwarklglelbts cib eikl usl an twa rlnlrlbclcgacks%cgack toel slpiritl` dy seigg`onnlrlbcl ciggl` pglsoachrabaus `onnlrlbcl"
4"S@H%`ofotig tribsotoabs accur it siel ritl%naggawobf i siel rlnlrlbcl cgack kbawb isproeiry rlnlrlbcl cgack"
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Zhysocig giylr stib`ir`s nar IPE
Ob Z@H ' thlrl irl twa wiys ta cirry clggs" Norst os ta `orlctgy eip IPE clggs ob ta piygai`
pirt ' wothaut iby rlfir` ta nriel nareit Slcab` os ta `lnobl ibathlr nriel` structurl
whoch os thlb cirrol` ob thl piygai` pirt"
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