scope:

This Recommendation covers end-to-end quality of service (QoS) requirements for video-telephony over long-term evolution (LTE) (ViLTE) network segments (see [b-GSMA IR.94]), budget allocation considerations for different service architecture scenarios, QoS parameterization for regulatory compliance, impact assessment of some relevant operating conditions on identified service parameters as well as a diagnostic strategy for QoS degradations in ViLTE. The intention of this Recommendation is to serve as a reference guide for LTE operators and regulators.

This Recommendation is a complement to [ITU-T G.1028]. All voice-related aspects of ViLTE are exactly similar to those for voice over LTE (VoLTE), and therefore covered by [ITU-T G.1028], and thus, they are not repeated in this Recommendation.