As voice-over-IP continues to take over the base of fixed-line voice subscribers, and as voice-over-LTE (VoLTE) continues to gain penetration into LTE and 5G NR subscribers, vendors must continually sharpen their strategies to capitalize on the transition from legacy core network technologies and invest in new technologies that allow their customers to better compete in an all-IP voice world. Our research reports outline the economics underlying these markets helping vendors, operators, and investors make sound investment decisions and to capitalize on emerging and transitioning markets. Exact Ventures has published quarterly market share reports for the IMS and VoLTE markets since 2011. 

Exact Ventures’ IMS/VoLTE 5-Year Forecast Report separates each market segment between Physical Network Functions (PNFs), Virtual Network Functions (VNFs) and Cloud-native Network Functions (CNF) and by the following metrics: revenues, session shipments and average selling price per session.

Highly granular quarterly vendor shipments, revenues, and prices—and market forecasts—are available for the following markets:


  • Call Session Control Function (CSCF)
  • Home Subscriber Server (HSS)
  • IMS Voice Application Server (VAS)


  • Call Session Control Function (CSCF)
  • Home Subscriber Server (HSS)
  • IMS Voice Application Server (VAS)

Metrics tracked include:

  • Product Revenue (Hardware + Software)
  • Session or License Shipments by Region
  • Average Selling Price (ASP) per Session or License

Companies tracked include:

  • Cisco
  • Ericsson
  • Huawei
  • Mavenir
  • Microsoft/Metaswitch
  • Nokia
  • Oracle
  • Ribbon
  • ZTE

Our expertise

  • Market sizing and forecasting
  • Custom market analysis
  • Pricing model and price elasticity analysis
  • Technology and market white papers

News and reports

We regularily publish news and reports that document the changing face of the telecommunications market place.

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Who we are

An independent market intelligence firm with the objective to create unbiased, enduring benchmarks for measuring market shares…

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