Tanthauzo: H.323 ndilo ndondomeko yoyenera ya mauthenga a multimedia. H.323 inakonzedwa kuti ikuthandizira nthawi yeniyeni kutumiza mavidiyo ndi mavidiyo pa mapulogalamu a phukusi monga IP. Muyezo umaphatikizapo ma protocol osiyanasiyana okhudza mbali zina za intaneti telephony . International Telecommunication Union (ITU-T) imakhala ndi H.323 komanso miyezoyi.
Mauthenga ambiri pa IP (VoIP) amagwiritsa ntchito H.323. H.323 ikuthandizira kukhazikitsa maitanidwe, kutayika ndi kutumiza / kutumiza. Zokonza mapulani a H.323 ndi njira zotchedwa Terminals, Multipoint Control Units (MCUs), Gateways, Wopezeratu Chipata ndi Border Elements. Ntchito zosiyana za H.323 zimayenda pa TCP kapena UDP . Powonjezera, H.323 ikukangana ndi atsopano Session Initialization Protocol (SIP), ndondomeko yowonjezereka yomwe imapezeka nthawi zambiri mu machitidwe a VoIP .
Chidule cha H.323 ndi Quality of Service (QoS) . Mafilimu a QoS amavomereza patsogolo pa nthawi yeniyeni komanso zovuta zothetsera magalimoto kuti ziyike pazinthu zabwino zopangira mapaketi monga TCP / IP pa Ethernet. QoS imakulitsa ubwino wa mawu kapena mavidiyo akudyetsa.