scope:

This Recommendation provides a framework and guidelines that describe how ITU-T speech quality assessment models can be used to identify common voice quality problems in live networks and how these can aid in diagnosing the cause of such problems once detected. The scope of this Recommendation is limited to voice service only.

The Recommendation is intended to help non voice experts tasked with managing voice service and diagnosing voice quality problems, especially when voice is regarded as "just another IP application" on the network.

The scope of this Recommendation relates to the perceived quality of the media stream; it does not include factors such as billing, availability, customer service, etc. The primary focus is point-topoint voice services; however, the methods and approaches described can also be applied to the individual legs of multi-party voice applications such as audio-conferencing.