A filin telephony, ingancin sabis ya ƙunshi bukatun a kan dukkan al'amurran da wani dangane, kamar sabis martani lokaci, hasara, siginar-to-amo rabo, crosstalk, echo, interrupts, mita martani, loudness matakan, da dai sauransu. A subset na telephony QoS ne sa na sabis (GoS) bukatun, wanda ya ƙunshi al'amurran da wani dangane alaka da damar da kuma ɗaukar hoto na cibiyar sadarwa, misali tabbatar da iyakar toshe yiwuwar da kuma katsewa yiwuwar. A cikin filin na kwamfuta networking da sauran fakiti-switched sadarwa networks, teletraffic injiniya yana nufin fifiko da kuma ajiyar hanya kula da sunadaran maimakon ingancin sabis cimma. ingancin sabis ne ikon samar da daban-daban muhimmanci bayanai, ko IPTV gudana, ko tabbatar da wani matakin na sauti, crosstalk, Echo, interrupts, mita martani, da sauransu.
bit rate, jinkiri, jinkiri canji, fakiti hasara ko bit kuskure rates iya tabbatar