The ITU-T Recommendation for the adaptation of H.320 visual telephone terminals to broadband ISDN (B-ISDN) environments. See also B-ISDN, H.320, H Series, and ITU-T.
"H.321." YourDictionary, n.d. Web. 18 August 2018. <http://www.yourdictionary.com/h-321>.
H.321. (n.d.). Retrieved August 18th, 2018, from http://www.yourdictionary.com/h-321
An ITU standard for videoconferencing over ATM and Broadband ISDN networks. See videoconferencing and codec.