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REDWOOD CITY, Calif. – July 29, 2014 –Dell’Oro Group, the trusted source for information about the networking and telecommunications industries, reported that spending on emerging voice-related systems such as Session Border Controllers (SBCs), IP Multimedia Subsystem (IMS) Core and Voice Applications Servers (VASs) will grow over 90% over the next five years.

“New services such as Voice Over LTE (VoLTE) and Voice over Wi-Fi are expected to drive robust demand for SBCs, IMS Core and Voice Application Servers in the coming years,” said Chris DePuy, Vice President at Dell’Oro Group.  “These newer systems are expected to replace the existing voice systems that have been used for over a decade.  After several years of robust growth of these newer systems, their revenues are now overtaking older system revenue, resulting in our expectation that the overall voice market will remain stable in the coming years,” concluded DePuy.

The forecast report includes an analysis and estimate of NFV licenses for the SBC, IMS Core and VAS markets.  The forecast report also includes Voice over LTE (VoLTE) subscribers, IMS Core equipment, Softswitch and Media Gateway equipment, and Enterprise Session Border Controllers.  Markets are included for vendors such as Alcatel-Lucent, Broadsoft, GENBAND, Huawei, Mavenir, Metaswitch, Nokia-Siemens Networks, Oracle, Sonus, and ZTE.


The Dell’Oro Group Carrier IP Telephony 5-Year Forecast Report offers a complete overview of the Carrier IP Telephony industry with tables covering manufacturers’ revenue, average selling prices, license/channel shipments for IMS Core (CSCF and HSS), softswitches, media gateways, session border controllers, and voice application servers. The report also includes an analysis of VoLTE. To purchase this report, contact Julie Learmond-Criqui at +1.650.622.9400 x244, or email at


As the trusted source for market information about the networking and telecommunications industries, Dell’Oro Group provides in-depth, objective research and analysis that enable component manufacturers, equipment vendors, and investment firms to make fact-based, strategic decisions.  For more information, contact Dell’Oro Group at +1.650.622.9400 or visit