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REDWOOD CITY, Calif. – July 27, 2015 –Dell’Oro Group, the trusted source for information about the telecommunications, networks, and data center IT industries, reported that spending in voice core key growth segments, IP Multimedia Subsystem (IMS) Core, Voice Application Server (VAS) and Session Border Controller (SBC), will continue to increase over the next five years, partially offsetting declines in other Carrier IP Telephony market segments.

“VoLTE, Voice over WiFi and NFV are the main industry drivers to the voice core market in the future,” said Chris DePuy, Vice President at Dell’Oro Group. “Much of the excitement about NFV involves virtualizing the voice infrastructure market, including the functions that we expect to experience significant growth such as IMS Core, VAS and SBCs,” concluded DePuy.

The forecast report includes an analysis and estimate of NFV licenses for the SBC, IMS Core and VAS markets. The report details projections for 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 Networks, Oracle, Sonus Networks, 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 (SBC), and voice application servers (VAS). Projections for Voice over LTE (VoLTE) subscribers, and an analysis and estimate of NFV licenses for the SBC, IMS Core and VAS markets are also included. For more details or to purchase this Report, contact Matt Dear at +1.650.622.9400 x233, or email at


Dell’Oro Group is a market research firm that specializes in strategic competitive analysis in the telecommunications, networks, and data center IT markets.  Our firm provides in-depth quantitative data and qualitative analysis to facilitate critical, fact-based business decisions.  For more information, contact Dell’Oro Group at +1.650.622.9400 or visit