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REDWOOD CITY, Calif. – March 17, 2015 –Dell’Oro Group, the trusted source for market information about the networking and telecommunications industries, announced today that Carrier IP Telephony (CIPT) market revenues grew eight percent in 2014 compared to 2013. Sales of IP Multimedia Subsystem (IMS) Core, Session Border Controller (SBC) and Voice Application Server (VAS) systems grew 41 percent, more than offsetting declines in mature Softswitch (SS) and Media Gateway (MG) segments.

“From 2011 to 2014, we saw growing investments in Voice over LTE (VoLTE) and Voice over WiFi (VoWiFi) infrastructure in North America. We expect that in 2015, after starting spending in 2014, European and Chinese operators will represent growing portions of VoLTE-related spending,” said Chris DePuy, Vice President of Carrier IP Telephony research at Dell’Oro Group. “Interestingly, smaller companies have entered the market, using new technologies such as Network Functions Virtualization (NFV), and have won significant contracts. This has led to some vendor consolidation in 2015, as vendors traditionally outside the CIPT market have decided to participate in the Service Provider Core market.”

The overall Carrier IP Telephony market, which includes devices used to serve both circuit switched subscribers, Voice over IP (VoIP) and Voice over LTE subscribers, approached $7 billion in 2014.


The Dell’Oro Group 4Q14 Carrier IP Telephony Quarterly Report offers complete, in-depth coverage of the market with tables covering manufacturers’ revenue, shipments, and average selling prices for both wireline and wireless voice core markets. The segments include softswitches, media gateways, session border controllers, voice application servers, IMS CSCF, and legacy mobile switching centers. To purchase this report, please contact Julie Learmond-Criqui, call +1.650.622.9400 x244 or email


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