Lub suab Latency ua rau Echos thiab Overlapping nrov
Latency yog ib qho qeeb lossis lag hauv ib yam dab tsi. Koj tuaj yeem muaj latency nyob rau hauv lub computer networks , tab sis kuj thaum lub sij hawm sib txuas lus lub suab. Nws yeej hais tsis zoo thiab yog qhov teeb meem loj hauv lub suab hu.
Latency yog lub sij hawm ntawm lub sij hawm ib lub suab pob ntawv kis tau thiab lub caij nws ncav nws lub hom phiaj, ua rau qeeb thiab nchav los ntawm qeeb network links . Latency yog ib qho kev txhawj xeeb loj hauv VoIP kev sib txuas lus thaum nws los hu xov tooj zoo.
Muaj ob txoj kev latency raug ntsuas: ib qho kev taw qhia thiab ncig mus ncig. Ib txoj kev taw qhia latency yog lub sij hawm siv rau pob ntawv mus ncig teb chaws txoj kev mus rau qhov chaw. Round-trip latency yog lub sijhawm uas nws yuav siv rau lub pob ntawv mus rau thiab los ntawm qhov chaw nres nkoj, rov qab mus rau qhov chaw. Qhov tseeb, nws tsis yog tib lub pob ntawv uas tawm mus, tab sis kev lees paub.
Latency yog ntsuas nyob rau hauv milliseconds (ms), uas yog ntau txhiab leej. Lub latency ntawm 20 ms yog qhov kev hu ua IP thiab 150 ms yog ib qho kev ceebtoom thiab yog li ntawd. Txawm li cas los xij, tej siab tshaj qhov ntawd thiab qhov zoo pib rau ploj zuj zus mus; 300 ms lossis siab dua thiab nws ua tiav tsis tiav.
Lus Cim: Cov xov tooj latency qee zaum qeeb qeeb ntawm lub qhov ncauj mus qeeb , thiab hauv internet muaj suab nrov latency kuj mus raws li lub sijhawm zoo los ntawm QoE.
Teebmeem ntawm Kev Lom Zem rau Cov Xov Tooj
Cov no yog ob peb yam ntawm qhov tsis zoo ntawm latency ntawm kev hu xov tooj zoo:
- Hloov koj tus xov tooj sib tham
- Untimeliness tuaj yeem ua rau nrov nrov nrov, nrog ib tus neeg hais lus cuam tshuam lwm tus
- Ua rau echo
- Disturbs synchronization ntawm lub suab thiab lwm hom ntaub ntawv, tshwj xeeb tshaj yog thaum video conferencing
Yuav Ua Li Cas Thiaj Tau Tshais Chaw
Qhov no yog ib txoj hauj lwm uas nyuaj thiab yuav kom koj xav txog ntau yam, ntau yam uas dhau koj tswj. Piv txwv, koj tsis xaiv cov codecs uas koj tus neeg muab kev pab cuam siv.
Ntawm no yog yam uas yuav ua rau VoIP latency:
- Koj tsis muaj bandwidth txaus. Thaum lub Internet txuas qeeb qeeb, cov ntaub ntawv pob khoom siv sij hawm ntau los ntws mus rau sab nraud thiab qhov no ua rau kev sib txuas lus mus raug kev txom nyem. Feem ntau, cov packets tuaj txog hauv qhov kev txiav txim tsis ncaj ncees, uas ua rau reassembly tsis tshwj tsis yog qhov kev txiav txim yog rov qab. Qhov no yog ib qho ntawm qhov tsis zoo ntawm kev hloov pob khoom, uas siv VoIP.
- Koj qhov kev lag luam yuav thaiv cov tsheb khiav. Checkpoints yeej ib txwm yog ib qho kev poob siab, yog li xyuas kom meej tias koj tso cai rau koj cov VoIP apps hauv tshuab firewall .
- Lub codecs tsis yog siv. Codecs yog cov kev pabcuam siv los kho cov suab paj nruag hauv cov ntaub ntawv rau kev xa mus hla lub network, thiab koj tus kws kho mob yuav siv qhov tsis yog lawm, uas tsis muaj dab tsi uas koj tuaj yeem ua. Txawm li cas los xij, yog tias koj siv VoIP apps uas pub koj tweak nrog cov codecs, sim hloov lawv.
- Koj siv cov cuab yeej qub. Kev kho vajtse qub nrog software tshiab lossis cov tuam txhab tshiab yuav tsis ua haujlwm zoo thiab qeeb thiab latency feem ntau tshwm sim. Koj yuav tsum tau sim siv ib lub xov tooj sib txawv lossis ib lub xov tooj sib txawv (yog tias koj siv tus IP xov tooj lossis lwm yam kev kho vajtse VoIP). Koj lub hub kuj yuav yog ib tug neeg ua txhaum. Tej zaum koj tseem xav saib xyuas koj lub pob ntseg, uas feem ntau ua rau mob qeeb.
- Yog hais tias qhov system nyob hauv qhov chaw hloov qhov teeb liab los yog los ntawm cov analog los yog cov digital, uas ib leeg yuav ua rau latency.
- Buffering yuav tsum siv ob qho chaw thaum cov ntaub ntawv tawm suab rau thiab thaum muaj qhov sib txawv ntawm lub sijhawm ob qho tib si, thiab nws tuaj yeem ua suab nrov latency thiab.