Quality of service
[ar] جودة الخدمة
[bg] Quality of service
[ca] Qualitat de servei
[cs] Quality of Service
[da] Servicekvalitet (datanet)
[de] Quality of Service
[el] Ποιότητα υπηρεσιών
[es] Calidad de servicio
[et] Teenusekvaliteet
[eu] QoS