The wireline voice core market grew 7% sequentially in the second quarter of this year, according to market intelligence and advisory company Exact Ventures.
In its new report, the company said that the growth was driven in part by the continued strength of enterprise VoIP services, such as SIP trunking and hosted unified communications.
The enterprise session border controller and voice application server markets each grew over 40% compared to the second quarter of last year.
Exact Ventures founder and principal analyst Greg Collins said, "Enterprise VoIP is clearly a key factor in the resurgence of the wireline NGN market."
"The older, more traditional wireline NGN segments of softswitches and media gateways, however, are beginning to show stability as growth in wireline VoIP services will also need to interface with legacy TDM services," Collins added.
The report also said that Alcatel-Lucent, Huawei, and ZTE each gained share in the worldwide IMS Core equipment market that increased more than 50% year-over-year in the second quarter, mainly as a result of sales to the Asia Pacific region for the large scale wireline deployments by China Mobile and China Telecom.
"While wireline deployments currently dominate IMS Core sales, as voice-over-LTE services are introduced in the coming months and gain subscribers, the market will shift to become dominated by wireless deployments, which will drive the IMS market for well over a decade as the billions of wireless subscribers are gradually migrated to VoIP," stated Collins.