![](http://www.infonetics.com/pr/2014/charts/ms14_ngv_2q14_chart.jpg)
"To date, nationwide launches of voice over LTE (VoLTE) have taken place only in small countries and city-states such as South Korea, Singapore, and Hong Kong .. Larger nationwide launches of VoLTE in the U.S. and Japan are expected to begin toward the end of 2014; this, in addition to the activity of operators in Europe, Canada, and other parts of Asia, will fuel IMS equipment related to VoLTE in 2015.
The large network equipment vendors—Alcatel-Lucent, Ericsson, Huawei, and Nokia—are benefitting from VoLTE-related activity and product sets that extend beyond IMS".
See "Service provider VoIP and IMS market enters period of correction after ramp-up to VoLTE" - here.
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