Service providers globally have at times struggled to make their next generation network visions a commercial reality. One might consider a new survey of global service providers conducted by IHS.
IHS looked at IP multimedia subsystem (IMS) core equipment already installed, or scheduled for installation by the end of 2017 and found about eight percent adoption of IMS IMS network elements running in a network functions virtualization (NFV) environment today.
About 80 percent of service provider respondents indicated that parts of their IMS infrastructure will be running in an NFV environment by 2017, which IHS believes is somewhat optimistic.
Today, 60 percent to 65 percent of respondents are running residential voice over broadband, SIP trunking or hosted business VoIP over IMS, growing to 88 percent by 2017.