No ka hoʻokō ʻana i nā noi multimedia ma ka pūnaewele kamaʻilio e kū nei, ua kūkulu ka International Telecommunication Union (ITU-T) i ka H.32x multimedia communication protocol series. Eia ka wehewehe pōkole o nā kūlana nui
H.320, ke kūlana maʻamau no ke kamaʻilio multimedia ma ka ʻōnaehana kelepona wikiō haiki a me ka pahu (N-ISDN);
H.321, ka maʻamau no ke kamaʻilio multimedia ma ka B-ISDN;
H.322, ke kūlana o ke kamaʻilio multimedia ma ka LAN i hōʻoia ʻia e QoS;
H.323, maʻamau no ke kamaʻilio multimedia ma kahi pūnaewele hoʻololi packet me ka hōʻoia ʻole o QoS;
H.324, he maʻamau no ke kamaʻilio multimedia ma nā palena haʻahaʻa haʻahaʻa haʻahaʻa (PSTN a me ka pūnaewele uea ʻole).
Ma waena o nā kūlana i luna, H.323 Standard e wehewehe i ka pūnaewele ka mea i hoʻohana nui ʻia, e like me Ethernet, token, FDDI, etc.no ka hoʻohana ʻana oH. Ua lilo maoli ka 323 maʻamau i wahi wela i ka mākeke, no laila e kālele mākou i ka H.323. ʻO ka ʻōlelo aʻoaʻo H.323 e wehewehe i ʻehā mau mea nui: nā terminals, nā ʻīpuka, nā polokalamu hoʻokele puka (ʻike ʻia ʻo nā kiaʻi puka a i ʻole nā puka), a me ka mana multipoint ʻāpana.
1、Hoʻopau
Pono nā pahu āpau e kākoʻo i ke kamaʻilio leo, a ʻo ka hiki ke kamaʻilio wikiō a me ka ʻikepili ke koho. ka leo leo penei: ITU paipai leo bandwidth /KHz transmission bit rate /Kb/s Compression algorithm annotation G.711 3.456,64 PCM kaomi maʻalahi, hoʻohana ʻia i ka PSTN G.728 3.416 LD-CELP maikaʻi ʻōlelo e like me G.711, I ka wā Hoʻohana ʻia i ka hoʻouna ʻana i ka helu haʻahaʻa haʻahaʻa G.722 7 48,56,64 ʻoi aku ka maikaʻi o ka haʻiʻōlelo ADPCM ma mua o G.711, ke hoʻohana ʻia i ka hoʻouna ʻana i ka helu bit kiʻekiʻe G.723.1G.723.0 3.4 6.35.3 LP-MLQ maikaʻi ʻōlelo ʻae ʻia G Hoʻohana ʻo .723.1 i ka G.729 no ka ʻaha kūkā VOIP. ʻOi aku ka lōʻihi o G.729a 3.48CS-ACELP ma mua o G.723.1, ʻoi aku ka maikaʻi o ka leo ma mua o G.723.1.
2, ʻīpuka
He koho kēia no nā ʻōnaehana H.323. Hiki i ka ʻīpuka ke hoʻololi i nā protocols, nā leo a me nā wikiō coding algorithms a me nā hōʻailona hoʻokele i hoʻohana ʻia e nā ʻōnaehana like ʻole e hoʻokipa i ke kamaʻilio ʻana o nā ʻōnaehana ʻōnaehana. E like me ka H.324 Pūnaehana ma ka PSTN a me ka Pūnaehana H.320 me ka H.323 System narrowband ISDN, pono e ho'onohonoho i ka puka.
3. Kiaipuka
He ʻāpana koho kēia o ka ʻōnaehana H.323 i mālama ʻia e nā polokalamu. ʻElua mau hana nui: ʻo ka hoʻokele ʻana i nā noi H.323; ʻO ka lua, ʻo ia ka hoʻokele ʻana i ka kamaʻilio terminal ma o ka puka ʻīpuka, e like me ka hoʻokumu ʻana i ke kelepona, ka wehe ʻana, a me nā mea ʻē aʻe. Hiki ke loaʻa nā ʻīpuka lehulehu H.323 domain communication, akā hoʻokahi wale nō ʻīpuka hiki ke hana.
4. Huina mana multipoint
Hoʻokomo ʻo MCU i ka kamaʻilio multi-point ma ka pūnaewele IP, ʻaʻole pono ke kamaʻilio point-to-point. Hoʻokumu i ka ʻōnaehana holoʻokoʻa i topology hōkū ma o ka MCU. Aia i loko o ka MCU nā mea nui ʻelua: multipoint controller MC a me multipoint processor MP, a i ʻole MP. Hoʻoponopono ka MC i ka ʻike mana H.245 ma waena o nā hopena, e hoʻokumu ana i kahi inoa maʻamau liʻiliʻi no ka hoʻoili leo a me ka wikiō. ʻAʻole hana pololei ʻo MC i kekahi kahawai ʻike media, akā waiho iā ia i MP. Hoʻohui ka MP, hoʻololi, a hana i ka ʻike leo, wikiō, a i ʻole ʻikepili.
ʻElua mau papa hana like o ke kelepona IP ma ka ʻoihana, ʻo ka protocol ITU-TH.323 i hoʻokomo ʻia ma luna, ʻo ka protocol SIP (RFC2543) i hoʻolālā ʻia e IETF, ʻoi aku ka kūpono o ka protocol SIP no ka terminal naʻauao.
No kā mākou mau helu hana polokalamu ma lunaONUnā huahana network series ma kahi ʻoihana lako polokalamu, a ʻo nā huahana kūʻai wela o kā mākou hui e uhi i nā ʻano like ʻoleONUseries , me ACONU/ kamaʻilioONU/ akamaiONU/ pahuONU/ lua PON awaONU, etc. ʻO nā mea a pau i lunaONUHiki ke hoʻohana ʻia nā huahana series no nā pono pūnaewele o kēlā me kēia hiʻohiʻona. Welina mai e loaʻa i ka ʻike loea kikoʻī o ka huahana.
