Mu rwego rwo gushyira mu bikorwa porogaramu zikoresha interineti ku ihuriro ry’itumanaho risanzweho, Umuryango mpuzamahanga w’itumanaho (ITU-T) wateguye urutonde rw’itumanaho rya H.32x. Ibikurikira nigisobanuro kigufi cyibipimo byingenzi
H.320, igipimo cyitumanaho rya multimediya kuri sisitemu ya terefone igufi ya terefone na terefone (N-ISDN);
H.321, igipimo cyitumanaho rya multimediya kuri B-ISDN;
H.322, igipimo cyitumanaho rya multimediya kuri LAN byemejwe na QoS;
H.323, igipimo cyitumanaho rya multimediya kumurongo wapakiye udafite garanti ya QoS;
H.324, igipimo cyitumanaho rya multimediya kumurongo muto wo gutumanaho (PSTN numuyoboro udafite umugozi).
Mubipimo byavuzwe haruguru, H.323 Standard isobanura umuyoboro niwo ukoreshwa cyane, nka Ethernet, ikimenyetso, FDDI, nibindi kubera ikoreshwa rya H. 323 bisanzwe bisanzwe byahindutse ahantu hashyushye kumasoko, bityo tuzibanda kuri H.323。Icyifuzo cya H.323 gisobanura ibice bine byingenzi: amaherere, amarembo, software yo gucunga amarembo (bizwi kandi nkabarinzi cyangwa amarembo), hamwe no kugenzura ibintu byinshi ibice.
1 Terminal
Terminal zose zigomba gushyigikira itumanaho ryijwi, kandi ubushobozi bwitumanaho rya videwo nububiko bwamakuru birahinduka. Terminal zose H.323 zigomba kandi gushyigikira igipimo cya H.245, kigenzura imikoreshereze yimikorere nimikorere.H.323 yerekana ibipimo nyamukuru bya codec yijwi muri itumanaho ryijwi kuburyo bukurikira: ITU yasabye amajwi yumurongo / KHz yohereza biti igipimo / Kb / s Kwiyunvisha algorithm annotation G.711 3.456,64 PCM yoroheje yoroheje, ikoreshwa kuri PSTN G.728 3.416 LD-CELP imvugo nziza nka G.711, Iyo ikoreshwa muburyo buke bwohereza G.722 7 48,56,64 Ubwiza bwimvugo ya ADPCM burenze G.711, iyo bukoreshejwe mugukwirakwiza umuvuduko mwinshi G.723.1G.723.0 3.4 6.35.3 Ijambo rya LP-MLQ ryemewe G .723.1 ikoresha G.729 kurubuga rwa VOIP. G.729a 3.48CS-ACELP gutinda biri munsi ya G.723.1, ubwiza bwijwi burenze G.723.1.
2 ate Irembo
Ibi birahinduka kuri sisitemu ya H.323. Irembo rishobora guhindura protocole, amajwi na videwo yerekana kodegisi ya algorithm hamwe nibimenyetso byo kugenzura bikoreshwa na sisitemu zitandukanye kugirango habeho itumanaho rya sisitemu. Nka PSTN ishingiye kuri H.324 Sisitemu na Broadband ISDN ishingiye kuri H.320 Sisitemu na itumanaho rya H.323, birakenewe gushiraho amarembo.
3. Umurinzi w'irembo
Nibintu bidahwitse bya sisitemu ya H.323 iyobowe na software. Ifite imirimo ibiri yingenzi: imwe ni ugucunga porogaramu ya H.323; Iya kabiri nubuyobozi bwitumanaho rya terefone binyuze mumarembo, nko gushiraho guhamagara, gusenya, nibindi. Umuyobozi ashobora gukora ibisobanuro bya aderesi, kugenzura umurongo, guhamagarira kwemeza, guhamagara, kwandikisha abakoresha, gucunga imiyoboro y’itumanaho nindi mirimo abinyujije ku Irembo.An Urubuga rwitumanaho H.323 rushobora kugira amarembo menshi, ariko irembo rimwe gusa rirashobora gukora.
4. Igice cyo kugenzura ibintu byinshi
MCU ishyira mubikorwa itumanaho ryingingo nyinshi kumurongo wa IP, itumanaho-ku-ngingo ntabwo rikenewe. Shiraho sisitemu yose muburyo bwinyenyeri topologiya binyuze muri MCU. MCU ikubiyemo ibice bibiri by'ingenzi: kugenzura ibintu byinshi MC no gutunganya ibintu byinshi, cyangwa nta MP. MC itunganya H.245 igenzura amakuru hagati ya terefone, igashyiraho izina rito risanzwe ryo gutunganya amajwi na videwo. MC ntabwo itunganya amakuru yamakuru yose yamakuru, ariko ayasigira MP. Umudepite avanga, ahindura, kandi atunganya amakuru y amajwi, amashusho, cyangwa amakuru.
Hariho ibintu bibiri bisa na terefone ya IP mu nganda, imwe ni ITU-TH.323 protocole yatangijwe haruguru, indi ni SIP protocole (RFC2543) yatanzwe na IETF, protocole ya SIP irakwiriye kuri terefone yubwenge.
Imikorere ya software yavuzwe haruguru ni iyacuONUUrukurikirane rwibicuruzwa byurusobe mubucuruzi bwa software, hamwe numuyoboro ujyanye no kugurisha ibicuruzwa bya sosiyete yacu bikubiyemo ubwoko butandukanye bwaONUurukurikirane, harimo ACONU/ itumanahoONU/ umunyabwengeONU/ agasandukuONU/ ibyambu bibiriONU, n'ibindi byose byavuzwe haruguruONUibicuruzwa bikurikirana birashobora gukoreshwa kumurongo usabwa kuri buri gice. Murakaza neza kugira ibisobanuro birambuye bya tekiniki kubicuruzwa.
