ETSI - European Telecommunications Standards Institute
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ES 202 765-2-2014
Scope
The present document aims at identifying and defining indicators and methodologies for a use in a context of end-user quality characterization and supervision of voice telephony services. In this context the measurements and metric determinations are performed by analysing signals accessible on user-end services and not on the network. In order to mirror the reality in terms of access to the services at the user-end@ measurements and analyses are performed on electrical signals by excluding the electro-acoustic part of the end equipment@ however the probe adaptation to the electric interface of the end user equipment takes into account the electro-acoustic characteristics of this terminal. All the indicators presented and defined in the present document are objective indicators obtained by instrumental measurement methods.
ES 202 765-2-2014 history
2014ES 202 765-2-2014 Speech and multimedia Transmission Quality (STQ); QoS and network performance metrics and measurement methods; Part 2: Transmission Quality Indicator combining Voice Quality Metrics (V1.2.1)
2010ES 202 765-2-2010 Speech and multimedia Transmission Quality (STQ); QoS and network performance metrics and measurement methods; Part 2: Transmission Quality Indicator combining Voice Quality Metrics (V1.1.3)