Тип
Аналогов ствол
Аналогов ствол,whichisanalogtrunk,isthekindoffixedtelephonelineathome,whichisanalogline.Ananalogtrunkisasimplecombinationofmultipleordinarytelephonelinesthatusedtobeathome.Forexample,thecompanyneedstoapplyfor4analogtrunks.The4linesdisplayedonthemobilephoneareallA,buttheymaybeB,C,D.,Eiscomposedof4lines.ThetelecommunicationsbureauselectedanA’sGeelynumberfromthemiddle,andmadethese4linestobedisplayedasAforcibly.
DigitalTrunk
ThedigitaltrunkcurrentlyinuseismainlyPRI,alsocalledPRA,ISDN,30B+D.Infact,theyaretalkingaboutthesamekindoftrunk.Theformisquitedifferentfromtheanalogline.Usually,theopticalfiberreachesthecompany'scomputerroomfirst,andthentheopticalsignalisconvertedintoanelectricalsignal(coaxialcable)bytheopticaltransceiver.ApairofcoaxialcablesisalsoaPRI,thatis,aAlthoughitisadigitalrelay,itcansupport30channelsofvoiceinboundandoutboundsimultaneously,andworkatthesametime,whichisequivalentto30channelsofanalogrelay.
WisdomIPRelay
WisdomIPRelaycanprovideuserswithaccessservicesthroughtheInternet,thatis,aslongastheuser’sIPPBXcanberegisteredontheserviceprovider’splatform,it’sOKIncomingandoutgoingcalls.Thereisnophysicallineinthemiddle,andtheInternetiscompletelyused,whichistheVOIPtechnologyused,thatis,VOICEOVERIP.
Предимства на IP магистрални линии:
GoodsupportfordigitalservicessuchascallerID,fastconnectionspeed,lowcostandone-timeinvestment,andlowlong-distanceandlocalcalls.
Atthesametime,becausethereisnomonthlyrent,itcanbeusedasabackupforanaloganddigitalrelays.Whenthedigitalrelayfails,itcanstillbedialedoutfromtheIPrelay.
Значението на багажника
Като цяло се отнася до вътрешноофисния канал, наречен междуофисен канал;
Към потребителя, наречен потребителски багажник......
Mostofwhatissaidonthemarketnowissuitableforunits.Thesubscriberlinesthatenterthevoiceexchangewithnumbersarereferredtoastrunklinesforshortinthetelecommunicationssector.
Nomattertherearedozensofextensions(toafewhundred)intheswitchboardofaunit,thereareonlyafew(todozens)ofexternallines.Whenacustomercallsin,aslongashedialsapubliclyannounced"quotemark",thecallwilljumptothenexttelecomlinewhenbusy,andtheclientwillnothearabusytone.Inthecaseofusingatrunk,yourothernumbersdonotneedtobeannouncedtotheoutsideworld,whichgreatlyreducesthespaceoccupiedbyyouroutdooradvertisingmedia,therebyachievingthepurposeofsavingmoneyindisguise.
Trunkalsoreferstoanumbercontainingmultiplelines,andtheuseronlyneedstopublishaquotationmarktotheoutsidetoachievethefunctionofjumpingtothenextchannelwhenthephoneisbusy.Ifthisphoneisbusy,theincomingcallwillautomaticallyslidetoanothernumberwithacontinuousselectionfunction(usuallyatrunknumber).Ifthesecondphoneisalsobusy,itwillslidetothethirdline......Itispossibletoallowmultiplecallstocomeinatthesametime,andeachusercanconsiderhowmanytrunklinestoapplyforaccordingtothevolumeofcallsandthecapacityofthePBX!
Тарифа на телекомуникационния канал: 100 юана на канал на месец.
Ofcourse,itismeaninglesstoactivatethetrunkfunctionwithonenumber.Atleast3channelsarerequiredtoapplyforthetrunk.Canexperiencethefunctionofthetrunk,otherwisethemoneywillbespentinvain.
Предимствата и недостатъците на магистралната линия:
1.Theadvantageisthatthetrunklineisacommunicationvalue-addedservicefortelecommunicationsoperations.Thebrandiswell-known,famous,andthestabilityishigh,sothepriceisalsohigh
2.Thedisadvantageisthatthetrunklinemustonlybeboundtothetelecommunicationsline.Ifthecompany'stelecommunicationslineresourcesareinsufficient,thereisnowaytoexpandthecapacity.EvenifUnicomorTietongcanbeinstalleddirectlyatthistime,thereisnowaytocome.Unifiedintegrationintoaquotationmark,sobundlinghaslimitations.Theinitialinstallationandcommissioningofthetrunklineisrelativelycomplicated,andChinaTelecomalsochargesahighinitialinstallationfeeandcommissioningfeeforthisreason.Withthefiercemarketcompetition,thetrunklinesofChinaMobileandTietongcanbefreeofmonthlyrentandinstallationandcommissioningfees,oryoucanapplyforathird-partycompany,whichwillgiveyoualotofdiscounts.
3.Thetrunklinecanconnectmultipleexternallinenumbersoftheuserintoone,onlyneedtoannounceonenumbertotheoutside,andtheoutsidelineonlyneedstodialthepubliclyannouncednumber,onebyone,untiltheoutsidelineisfulluntil.Thisfunctionisespeciallysuitableforsomelargeexternaluserstousetoimprovethecompany'simage.(Tousethisoption,anoutsidelinewithapubliclyannouncednumberneedstogotothetelecommunicationsbureautoapplyformultiplecalltransferfunctions,somecitiesdonothavethesefunctions)