Dab Tsi Cov Qauv Thoob Ntiaj Teb Rau Cov Yeeb Yaj Suab Thoob Tawm thiab Cov Ntxhais?

Cov kev cai li cas thoob ntiaj teb rau kev sib tham video thiab cov duab kos yog dab tsi?

【Video lub rooj sablaj】 Hauv qhov kev yuav khoom tiag, thiaj li yuav ib qho khoom siv video conferencing, peb yuav tsum xub to taub cov qauv ntawm kev lag luam. Rau lub sij hawm no, dab tsi yog cov qauv thoob ntiaj teb rau kev sib tham video thiab duab?

H.323 (IP): Cov duab thev naus laus zis siv H261, H263 thiab H.264, thiab lub suab tshuab codec siv G711 lossis G722, G728, G723.1, G729A. H.320 (ISDN): Image codec tshuab siv H261 lossis H263, thiab lub suab codec tshuab siv G711 lossis G722, G728.

Lus Qhia:

1.       Ua ntej nkag siab txog qhov xwm txheej tam sim no ntawm lub tuam txhab tam sim no. Txawm hais tias video conferencing nyob rau hauv Suav teb yuav lav tias qhov sib tw uplink thiab qhov kawg ntawm qhov siab yog siab dua 512K. Txawm hais tias video conferencing nrog lub teb chaws xws li Tebchaws Europe thiab Tebchaws Asmeskas muaj peev xwm lav tau qhov sib tw uplink thiab downlink symmetry yog siab tshaj 768K.

[teev thiab tso tawm tshuab tshuab] Yog hais tias lub network yog nyob rau hauv daim ntawv ntawm pejxeem network, thiab pob ntawv poob, qeeb thiab jitter yog loj heev, lub network pom yuav tsum tau nqa tawm. Kev kaw qev ntawm lub network yuav raug tswj nyob rau hauv 20ms, thiab rooj plaub tshwj xeeb yuav tsum tsis pub tshaj 50ms.

Lub pob ntawv pob zeb poob tuaj yeem tswj tsis pub dhau 1%, thiab hauv cov case tshwj xeeb, nws yuav tsum tsis txhob muaj ntau tshaj 3% (ntau npaum li cas cov ntaub ntawv network poob qis, thiab cov ntaub ntawv siv thaum kuaj cov khoom siv video). Rau tes hauj lwm uas muaj kev sib koom ua ke hauv lub network, nws pom zoo kom optimize lub network los nce lub peev xwm ntawm txoj kab.

2. To taub dab tsi thiab hom khoom siv los ntawm lwm tog neeg twg? Dab tsi yog qhov kev yees thiab cim suab yees rau kev sib tham video thiab suab? Yog nws nyob rau hauv txoj kab nrog kev sib tham video thoob ntiaj teb? Puas yog tshaj peb cov khoom siv?

Nws yog ib qho tseem ceeb kom nkag siab txog qhov teeb meem ntawm lub network ntawm lwm tog neeg. Yog tias qhov sib koom ua ke ntawm lwm tog neeg tsawg, txawm tias peb muaj bandwidth txaus, qhov zoo tshaj ntawm kev sib tham video yuav raug txo kom tsawg. Qhov tseem ceeb nyob ntawm sab nraud nrog tsawg bandwidth network.