Introdução à Voz sobre IP e Asterisk

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    Dkihs k` supgrt` mgbhcgrhg kijithb

    Iotrgkug ^gz sgcr`IQ ` Hst`risf

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    Dkihs k` ]upgrt` Mgbhcgrhg Kijithb

    Iotrgkug ^gz sgcr`IQ ` Hst`risf

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    Dkihs k` ]upgrt` Mgbhcgrhg Kijithb

    Iotrgkug ^gz sgcr`IQ ` Hst`risf

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    Mgpyrijet 3181" @smgbh ]up`rigr k` S`k`s SOQ

    Hutgr

    Lhmir B/ Cgrkid

    S`visg tmoimh

    Hb`x Jhbehog Sgc`rtsgoHotoig [hk`u Hz`v`kg Jgd`s

    Mgbhcgrhkgr`s

    Cruog Mgrr`h

    ]rjig Nrhomismg

    ]up`rvisg tmoimh

    S`ohtg Kuhrt`

    Mggrk`ohg hmhkdimh

    K`rbioh Q/ D/ Dirhokh

    @kitgr

    Q`krg ]hojirhrki

    K`sijo

    [`mogk`sijo

    Mggrk`ohg j`rhb

    Buiz Mg`beg

    ^`rsg

    8/8/1

    [gkgs gs kir`itgs r`s`rvhkgs" og Crhsib" pgr

    @smgbh ]up`rigr k` S`k`s SOQ

    ettp

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    @smgbh ]up`rigr k` S`k`s

    H @smgbh ]up`rigr k` S`k`s @]S) h uoikhk` k` s`rvig kh S`k` Ohmigohb k`@osiog ` Q`squish SOQ) vgbthkh ngrdhg k` mgdp`tomihs `d [`mogbgjihs khIongrdhg ` Mgduoimhg [IM)/ ]uh dissg h kiss`diohg kg mgoe`mid`otg"mgd g gn`r`mid`otg k` mursgs prtimgs iot`osivgs mgd mhrjh egrrih k` ht ;1 egrhsk` kurhg" vgbthkgs hg d`rmhkg k` trhchbeg/

    Gs mursgs kh @]S sg chs`hkgs `d htivikhk`s prtimhs qu` k`s`ovgbv`d og hbuog hmhphmikhk` k` hobis` ` mgostrug k` eipt`s`s" phrh h sup`rhg kgs prgcb`dhs `k`shnigs `omgotrhkgs og kih h kih kg prgnissigohb k` [I/ H hpr`okizhj`d tgroh$s`dhis `n`tivh s` mgot`xtuhbizhkh r`hbikhk` prgnissigohb/ Mhkh hbuog t`d suh prprih`sthg k` trhchbeg ogs bhcgrhtrigs mgo`mthkgs iot`ro`t pgr d`ig kh r`k` k` hbth

    v`bgmikhk` kh SOQ/

    Hpgihkgs pgr dht`rihb kiktimg `xmbusivg" `bhcgrhkg pgr `sp`mihbisths" gs mursgs sgkistricukgs pgr miomg r`hs t`dtimhs< Hkdioistrhg ` Qrgl`tg k` S`k`s6Hkdioistrhg k` ]ist`dhs6 ]`jurhoh6 Dkihs k` ]upgrt` Mgbhcgrhg Kijithb `Jgv`rohoh k` [I/

    Nhz`okg phrt` k`st` tid`" vgm `st hcsgrv`okg h `xp`riomih hmudubhkh k` qu`dtrgux` h iot`ro`t phrh g Crhsib ` mgotiouh iogvhokg `d p`squish ` k`s`ovgbvid`otgoh r`h k` r`k`s/

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    Dkihs k` ]upgrt` Mgbhcgrhg Kijithb

    H iot`rhg htrhvs kh iot`ro`t udh r`hbikhk` `otr` hs p`ssghs ` grjhoizh`s/Hpbimh`s mgdg vik`gmgon`romih" w`cmgon`romih ` ^gIQ supr`d hs o`m`ssikhk`smgbhcgrhtivhs k` grjhoizh`s ` usurigs kgdstimgs" prgkuziokg `mgogdih k`t`dpg ` r`mursgs/ H mhphmithg oh mgonijurhg" hkdioistrhg ` gp`rhg khs

    dkihs k` supgrt` h r`uoi`s" kistricuig k` ukig ` vk`g" trgmh k` hrquivgs `mgdphrtibehd`otg k` iongrdh`s `otr` `quip`s ` p`ssghs k` idpgrtomih vithbo`ss` mgot`xtg/ H @smgbh ]up`rigr k` S`k`s gn`r`m` mursgs pr`phrhtrigs phrh gkgdoig k`sths n`rrhd`oths `ss`omihis og hdci`ot` k` quhbqu`r grjhoizhg/

    H qu`d s` k`stioh7

    R Qrgnissigohis qu` k`s`lhd hpr`ok`r h utibizhr ` hkdioistrhr r`mursgs k`mgbhcgrhg kijithb" phrh gs dhis kiv`rsgs nios/

    Mgov`o`s utibizhkhs

    R [`xtg purgPshkg og t`xtg" gp`s k` d`ou ` huxibihr`s k` t`mbhkg Hbt ` Mtrb)/

    R ItbimgXuhokg `d ttubgs ` phrjrhngs k` t`xtg" iokimh `strhoj`irisdgs" mgdhokgs ` suhsgp`s" ogd`s k` hrquivgs ` r`n`romihs h gutrhs s``s gu cicbigjrhnihs/ Xuhokg `dbhrjurh mgosthot`" k`ogth gs phrd`trgs qu` s`rg iokimhkgs p`bg usurig/

    R [`xtg `d hzub

    Iokimh PSBs hm`ssv`is oh iot`ro`t gu og hdci`ot` kg bhcgrhtrig/ Qgk`d s`r`ok`r`gs k` pjiohs" bgmhis k` r`k` gu `ok`r`gs `b`troimgs/

    R [`xtg `d bhrholh]`dpr` qu` mgosthr ogs phrjrhngs k` t`xtg iokimh udh `otrhkh k` jbgssrig"mulh k`nioig k`v` s`r visth oh bht`rhb kg t`xtg" prxidh hg t`rdg/

    R Bhrjurh mgosthot`Iokimh mgdhokgs ` suhs gp`s" vhriv`is ` htricutgs" mgot`kg k` hrquivgs `r`subthkg kh shkh k` mgdhokgs/ Xuhokg utibizhkgs phrh iokimhr mgdhokgs qu`s`rg kijithkgs p`bg usurig sg jrinhkgs `d o`jritg ` pgssu`d g pr`nixg kghdci`ot` `d usg og Bioux ogrdhbd`ot` - gu +" `oquhotg og Ziokgws M

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    vii

    R Qhrjrhng k` t`xtg mgd nuokg bhrholh ` mgo`/S`pr`s`oth ogths ` iongrdh`s mgdpb`d`othr`s mgdg kimhs" suj`st`s k`b`iturh hkimigohb gu d`sdg udh gcs`rvhg/

    R Qhrjrhng k` t`xtg mgd nuokg bhrholh ngot` `d crhomg

    Ptibizhkg phrh k`sthmhr gs `ouomihkgs khs htivikhk`s hg bgojg kg mhptubg/

    Mgd`otrigs ` p`rjuoths

    Qhrh `ovihr mgd`otrigs ` p`rjuoths sgcr` `sth pucbimhg shbh 881= CgthngjgSig k` Lho`irg SL 33391$91>@$dhib< iongA`sr/rop/cr

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    ]udrigu

    Mhptubg 8

    Eistrimg mgom`itgs csimgs / / / / / / / / / / / / / / / / / / / 8Mhptubg 3

    Qrgtgmgbg ]IQ / / / / / / / / / / / / / / / / / / / / / / / / ;9

    Mhptubg =

    S`mgd`okhg E/=3= / / / / / / / / / / / / / / / / / / / / / 9=

    Mhptubg ;

    Hst`risf / / / / / / / / / / / / / / / / / / / / / / / / / / 830

    Mhptubg 0

    Hrquit`turh kg Hst`risf / / / / / / / / / / / / / / / / / / / / 808

    Mhptubg >

    Qbhog k` kismhj`d / / / / / / / / / / / / / / / / / / / / / / 8:0

    Mhptubg :

    ]`rvigs mgdpb`d`othr`s / / / / / / / / / / / / / / / / / / / / 89=

    Mhptubg 5

    Kistricuig k` mehdhkhs / / / / / / / / / / / / / / / / / / /310

    Mhptubg 9

    Poikhk` k` S`spgsth Hukv`b PSH) / / / / / / / / / / / / / / / / 38=

    Mhptubg 81

    Xuhbikhk` k` ]`rvig `d ^gIQ / / / / / / / / / / / / / / / / / / 33=

    Cicbigjrhnih/ / / / / / / / / / / / / / / / / / / / / / / / / 30:

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    x

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    8

    8Eistrimg ` mgom`itgs csimgs

    ]udrig

    Mgom`itgs csimgs k` r`k` / / / / / / / / / / / / / / / / / / / / =Hrquit`turh [MQ'IQ / / / / / / / / / / / / / / / / / / / / / / / =Mhdhkhs kh hrquit`turh [MQ'IQ / / / / / / / / / / / / / / / / / / ;@ok`r`hd`otg IQ / / / / / / / / / / / / / / / / / / / / / / / :Mbhss`s k` `ok`r`hd`otg / / / / / / / / / / / / / / / / / / / / 5@ok`r`gs `sp`mihis / / / / / / / / / / / / / / / / / / / / / / 9Sgt`hd`otg / / / / / / / / / / / / / / / / / / / / / / / / 81Mgduoimhg gIQ / / / / / / / / / / / / / / / / / / / / / / 83@vgbug kg ^gIQ / / / / / / / / / / / / / / / / / / / / / / 83^gIQ [gIQ / / / / / / / / / / / / / / / / / / / / / / / / 8=^hothj`os ` k`svhothj`os kg ^gIQ / / / / / / / / / / / / / / / / 8=C`o`nmigs kg ^gIQ / / / / / / / / / / / / / / / / / / / / / / 8;@xist`d trs ngrdhs k` mgduoimhg vih ^gIQ / / / / / / / / / / / / 8:Qhkrgoizhg / / / / / / / / / / / / / / / / / / / / / / / / 31Qriompigs k` mgkinimhg k` ukig / / / / / / / / / / / / / / / / 38Mgkinimhg kh dkih k` vgz/ / / / / / / / / / / / / / / / / / / 3;Mgk`m / / / / / / / / / / / / / / / / / / / / / / / / / / 30Mgkinimhg k` ngrdh k` gokh / / / / / / / / / / / / / / / / / / 30Mgkinimhg phrhdtrimh / / / / / / / / / / / / / / / / / / / / 3>Mgkinimhg ecrikh / / / / / / / / / / / / / / / / / / / / / / 3>

    Qhkr`s k` mgkinimhg k` vgz / / / / / / / / / / / / / / / / / / 3:J/:88 / / / / / / / / / / / / / / / / / / / / / / / / / / 35J/:39 / / / / / / / / / / / / / / / / / / / / / / / / / / 35J/:3=/8 / / / / / / / / / / / / / / / / / / / / / / / / / 39iBCM / / / / / / / / / / / / / / / / / / / / / / / / / / / 39Hrquit`turh gIQ / / / / / / / / / / / / / / / / / / / / / / / =1Qrgl`tgs ^gIQ og Crhsib / / / / / / / / / / / / / / / / / / / / =8

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    3

    Iotrgkug^

    gzsgcr`IQ`Hst`risf Sgt`irg k` Htivikhk`s / / / / / / / / / / / / / / / / / / / / / ==

    Htivikhk` 8 Iosthbhokg g mbi`ot` U$Bit` / / / / / / / / / / / / / / =;Htivikhk` 3 Mgonijurhokg g U$Bit` / / / / / / / / / / / / / / / / =;Htivikhk` = Mgonijurhokg g [`b`ngo` IQ / / / / / / / / / / / / / / =>Htivikhk` ; Mgonijurhokg g H[H/ / / / / / / / / / / / / / / / / =:Htivikhk` 0 @n`tuhokg mehdhkhs mgd H[H" [`b`ngo` IQ ` U$Bit` / / / / / =9

    Htivikhk` > ^`rinimhokg mgk`ms k` ukig / / / / / / / / / / / / / / =9Htivikhk` : Mgoe`m`okg g Zir`sehrf / / / / / / / / / / / / / / / ;=Htivikhk` 5 @n`tuhokg mhpturhs mgd Zir`sehrf / / / / / / / / / / / ;;Htivikhk` 9 Mhpturhokg phmgt`s oh r`k`/ / / / / / / / / / / / / / ;>

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    =

    Mhptubg8

    Eistrimg`mgom`itgscsimgsMgom`itgs csimgs k` r`k`

    R Mgom`itgs csimgs k` r`k` phrh hs `sth`s/

    R Mbhss` M utibizh sgd`ot` gs trs prid`irgs gmt`tgs phrh ik`otinimhr h r`k`/ Ggmt`tg r`sthot` ik`otinimh g egst ` pgk` s`r ushkg p`bg hkdioistrhkgr kh r`k`/

    Ht`ok` tipimhd`ot` nhixh khs r`k`s bgmhis/ Mgdg `sths sg chsthot` oud`rgshs"sg r`s`rvhkgs 3; cits phrh h ik`otinimhg khs r`k`s gs trs cits dhissijoinimhtivgs vhb`d 8" 8 ` 1)" ` hp`ohs 5 cits phrh h ik`otinimhg khs `sth`s/

    Gs) cits) dhis sijoinimhtivgs) kg prid`irg gmt`tg k`t`rdiohd) h mbhss` kg`ok`r`g ` thdcd quhotgs cits r`pr`s`othd h pgrg mgrr`spgok`ot` r`k`/

    @ok`r`gs mbhss` HR Nhixh kgs od`rgs khs r`k`s< 8/1/1/1 ht 83>/1/1/16

    R Xuhotikhk` k` `ok`r`gs k` egsts< 8>/:::/38;/

    @ok`r`gs mbhss` CR Nhixh kgs od`rgs khs r`k`s< 835/8/1/1 ht 898/30;/1/16

    R Xuhotikhk` k` `ok`r`gs k` egsts< >0/0=;/

    @ok`r`gs mbhss` MR Nhixh kgs od`rgs khs r`k`s< 893/1/8/1 ht 33=/300/30;/16

    R Xuhotikhk` k` `ok`r`gs k` egsts< 30;/

    Mbhss`s H" C ` M sg hs mbhss`s dhis mgduos k` `ok`r`g IQ" dhs `ok`r`gs k`mbhss`s K ` @ `stg thdcd k`nioikgs/ @ok`r`gs k` mbhss` K mgd`hd `d

    33;/1/1/1 ` sg ushkgs phrh dubtimhst" `oquhotg `ok`r`gs k` mbhss` @ mgd`hd`d 3;1/1/1/1 ` sg r`s`rvhkgs phrh prgpsitgs `xp`rid`othis/

    @ok`r`gs `sp`mihis

    R SNM 8985 @ok`r`gs privhkgs5/1/8 893/8>5/300/30; 893/8>5'8> pr`nix)

    R ]gd`ot` `ok`r`gs IQ pcbimgs jbgchis td hm`ssg iot`ro`t6

    R @dpr`shs qu` ushd `ok`r`gs IQ privhkgs t`rg qu` ushr s`rvikgr prgxy phrhtrhkuzir `ok`r`gs privhkgs phrh pcbimgs/

    H SNM 8985 Hkkr`ss Hbbgmhtigo ngr Qrivht` Iot`ro`ts) k`nio` hs nhixhs k` `ok`r`gsqu` sgd`ot` pgk`d s`r ushkgs `d r`k`s privhkhs" gs kitgs `ok`r`gs privhkgs/@ss`s `ok`r`gs og pgk`d s`r rgt`hkgs oh iot`ro`t/ Gs `ok`r`gs qu` pgk`d s`r

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    Iotrgkug^

    gzsgcr`IQ`Hst`risf rgt`hkgs sg gs k`dhis `ok`r`gs khs mbhss`s H" C ` M" k`ogdiohkgs `ok`r`gs

    jbgchis gu `ok`r`gs pcbimgs" qu` og pgk`d s`r r`p`tikgs k`otrg kh iot`ro`t/ Hutibizhg kgs `ok`r`gs pcbimgs mgotrgbhkh p`bg Iot`rOIM/

    Gs `ok`r`gs privhkgs" mgdg sg ushkgs og dcitg k` udh grjhoizhg" og pr`mishds`r oimgs oh iot`ro`t" pgk`okg s`r r`p`tikgs k` udh grjhoizhg phrh gutrh/ Hssid"

    mhkh grjhoizhg t`d bic`rkhk` phrh ushr mgdg quis`r hs nhixhs hmidh k`nioikhs"s`d h o`m`ssikhk` k` gct`r p`rdissg kg Iot`rOIM phrh issg/ Qgr gutrg bhkg" `ss`s`ok`r`gs og pgk`rg s`r ushkgs phrh hm`ssg iot`ro`t" s`okg o`m`ssrig nhz`rudh trhkug k`ss`s `ok`r`gs privhkgs phrh pcbimgs htrhvs k` ud s`rvikgrmehdhkg Qrgxy ]`rv`r" qu` nhz h nuog O`twgrf Hkkr`ss [rhosbhtigo OH[)/

    H utibizhg k` `ok`r`gs IQ pcbimgs og dcitg k` udh grjhoizhg k`s`omgrhlhkhpgr mhush kh `smhss`z k` `ok`r`gs IQ ` priomiphbd`ot` k` s`jurhoh vubo`rv`b hhthqu`s k` ehmf`rs)/ K` dho`irh j`rhb" pgk`dgs mbhssinimhr gs egsts qu` ushd`ok`r`gs IQ k`otrg k` udh grjhoizhg ohs s`juiot`s mht`jgrihs mbhss`s C mgotjuhs tgkhs hs 8>mbhss`s td gs 83 cits k` r`k` ijuhis) ` g t`rm`irg cbgmg r`pr`s`oth 30> mbhss`s Mmgotjuhs tgkhs td gs 8> cits k` r`k` ijuhis)/

    Gs cits qu` r`sthd phrh egsts `d mhkh cbgmg sg k`ogdiohkgs r`sp`mtivhd`ot` k`cbgmg k` 3; cits" cbgmg k` 31 cits ` cbgmg k` 8> cits/

    Sgt`hd`otg

    R Sgt`hd`otg h trhosn`romih k` iongrdhg kh grij`d ht g k`stiog htrhvs k`udh r`k`/

    Sgt`hd`otg h trhosn`romih k` iongrdhg kh ngot` ht g k`stiog htrhvs k` udhr`k`/ Hg bgojg kg mhdioeg" tipimhd`ot` t`r`dgs p`bg d`ogs ud o iot`rd`kirig/K` hmgrkg mgd `sth k`nioig" h nuog kg rgt`hkgr phr`m` s`r h d`sdh qu` h k`udh pgot` switme'crikj`)/ H priomiphb kin`r`oh `otr` hdcgs qu` h pgot` gp`rh

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    88

    Mhptubg8

    Eistrimg`mgom`itgscsimgsoh mhdhkh 3 `obhm` k` khkgs) kg dgk`bg G]I" `oquhotg qu` gs rgt`hkgr`s gp`rhd

    oh mhdhkh = r`k`)/ Hssid" `b`s gp`rhd k` dho`irhs kin`r`ot`s" `dcgrh hdcgs`x`mut`d gp`rh`s k` mgduthg/

    Grij`d K`stiog

    Qrgtgmgbgs k` trhospgrt`

    R Kgis prgtgmgbgs k` mgduoimhg nid$h$nid sg k`nioikgs surj` g prid`irg prgtgmgbg k` siohbizhg phrh `sthc`b`mid`otg k`

    mehdhkhs k` vgz htrhvs k` r`k`s k` phmgt`s" qu` ngi g E/=3= k`s`ovgbvikg p`bgI[P" udh `vgbug kg prgtgmgbg I]KO kh t`b`ngoih/

    Hs r`k`s k` ogvh j`rhg qu` `stg sucstituiokg hs r`k`s k` mirmuitgs p`rdit`d gtrhospgrt` k` hpbimh`s k` t`dpg r`hb" `otr` `bhs h vgz" mgd quhbikhk` sidibhr hg

    m`bubhr/ G prgtgmgbg k` siohbizhg dhis `nimhz g ]IQ" k`s`ovgbvikg p`bg I@[N/

    ^gIQ [gIQ

    R ^gIQ ^gz sgcr` IQ) v`rsus [gIQ [`b`ngoih sgcr` IQ)6

    R ^gIQ gu >; fcit's 2 3

    J/:33/8 8; fEz 3;$=3 fcit's $ CghJ/:33/3 01 Ez : fEz >/> 3=/50 fcit's $

    J/:3=/8 5 fEz 0/= gu >/= fcit's 811 Shzgv`b hcgh

    J/:3> 5 fJz 8> ;1 fcits's >1 Cgh hrhzgv`b

    J/:35 =11 Ez =/; fEz 8> fcit's 2 3 Cgh

    J/:39 5 fEz 5 fcits's 30 =0 Cgh

    IBCM =11 Ez =/; fEz 8="== gu 80"31 fcit's =1 31 Cgh

    G phkrg J/:88 ud kgs d`begr`s gn`r`mikgs p`bg d`rmhkg" mgd k`bhy prxidg k`z`rg" `dcgrh suh thxh k` trhosdissg k` cits s`lh duitg hbth >; Fcits's`j)"mgosudiokg duith chokh `d mgdphrhg mgd gs k`dhis mgk`ms/ ]`u jrhok`kin`r`omihb qu` `st bivr` k` bim`oh" s`okg ud nhtgr h mgosik`rhr phrh prgl`tgsmgd kispgoicibikhk` k` chokh/ Gutrg nhtgr h mgosik`rhr qu` `st` mgk`m ogmgdprid`" s`okg utibizhkg `d trhosdissg k` nhx/

    [hc`bh 8/8

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    Iotrgkug^

    gzsgcr`IQ`Hst`risf G phkrg J/:39 pgssui thxh k` 5 Fcits's`j ` duitg utibizhkg og d`rmhkg/ ud

    mgk`m I[P mgd h o`m`ssikhk` k` mgdprh k` bim`oh/ @xist`d hs v`rs`s J:39h"d`ogs mgdpb`xh qu` h J:39" ` h v`rsg J:39c" mgd mhphmikhk` k` ios`rir rukgk` mgongrtg ohs bijh`s qu` utibizhd ^HK k`t`mg k` htivikhk` k` vgz)/

    G phkrg J :3=/8 pgssui thxhs d`ogr`s qu` g J/:39" ud mgk`m I[P ` thdcd

    o`m`ssith k` phjhd`otg k` bim`oh/ Qgssui thxhs k` >"= gu 0"= Fcits's`j ` s`uhtrhsg kh grk`d k` =:"0 ds`j/

    G mgk`m iBCM t`d ngot` hc`rth" s`d `xijomih k` phjhd`otg k` bim`oh" s`okg udhcgh gpg k` sgbug k` ngot` hc`rth/ ]uh thxh kh grk`d k` 8="= Fcits's`j/

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