|[February 21, 2017]
Voipfuture study: EVS good enough for VoLTE?
Voipfuture has performed an extensive analysis of the dependency of
duration and quality of live calls. The results will be published in a
whitepaper to be released at the Mobile World Congress (News - Alert) 2017.
The analysis reveals a clear dependency between codec and average call
duration as well as network performance and average call duration.
Surprisingly, the study finds that levels of packet loss and jitter
which are typically observed in Voice over LTE (News - Alert) (VoLTE) and Voice over
Wifi (VoWifi) networks have a substantial impact on call duration.
The new EVS (Enhanced Voice Services) codec has many features to improve
robustness and conceal errors, yet the findings indicate that this may
not be sufficient to deal with the adverse conditions in live LTE and
This implies that the benefits of wideband and superwideband codecs,
such as EVS, will only become evident once operators fix the transport
quality of their networks. Indeed, the current marketing campaigs
promoting EVS-based services are raising user expectations to a level
that calls for disappointment. Customer satisfaction will only improve,
when VoLTE and VoWifi service providers get their networks under control.
"Our customers make huge investments in VoLTE & VoWiFi to provide
excellent voice service quality. But their end customers have many OTT
options, such as Skype (News - Alert) and Facetime, to make often excellent voice and
video calls. Providing a constantly high user experience is the
opportunity for mobile operators. However, this requires more than only
a good voice codec - it needs an excellent network performance as well,"
said Jan Bastian, Voipfuture's CEO.
The study is based on data from more than 16 million international,
domestic and mobile (VoLTE) live calls analyzed by Voipfuture's Qrystal
VoIP monitoring solution. The analysis was made possible by Connect, a
new Qrystal solution component that correlates all available call data
to create quality-enriched CDRs.
This whitepaper is the first in a series of papers which aims to provide
our customers with an in-depth understanding of how to improve the
quality of experience.
More about Voipfuture: www.voipfuture.com
More about the whitepaper at MWC: Hall 6, 6M17
View source version on businesswire.com: http://www.businesswire.com/news/home/20170221005811/en/
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