N'ọhịa nke telephony, àgwà nke ọrụ na-agụnye ihe ndị a chọrọ n'akụkụ nile nke njikọ, dị ka oge nzaghachi ọrụ, ọnwụ, mgbaàmà-na-mkpọtụ ruru, crosstalk, ikwughachi, interrupts, ugboro ugboro nzaghachi, larịị larịị, na na. A subset nke telephony QoS bụ ọkwa nke ọrụ (GoS) chọrọ, nke na-agụnye akụkụ nke njikọ metụtara ikike na mkpuchi nke a na netwọk, n'ihi na ihe atụ na-ekwe nkwa kacha mma igbochi ihe gbasara nke puru omume na outage ihe gbasara nke puru omume. N'ọhịa nke netwọk kọmputa na ndị ọzọ packet-switched telecommunication netwọk, teletraffic engineering na-ezo aka prioritization na ego akara usoro kama na àgwà nke ọrụ na-enweta. Ogo nke ọrụ na-agụnye ike inye dị iche iche dị mkpa data, mkpa ma ọ bụ IPTV iyi, ma ọ bụ na-ekwe nkwa a ụfọdụ larịị nke ike nke ọrụ, dị ka ihe atụ, ebe a pụrụ ịdị mkpa a bit nke igbu oge na-egbu oge na-arụ ọrụ nke netwọk,
bit ọnụego, oge, oge mgbanwe, ngwugwu ọnwụ ma ọ bụ bit njehie udu nwere ike na-ekwe nkwa