Note: these VoIP market reports are all out of date, but provide historical perspective on where the VoIP industry has been and how well IP Telephony has stayed on track with past forecasts.
| | | |
| ABI Research | Global Residential VoIP Assessment | August 2005 |
| ABI Research | Next Generation Service Delivery Platforms | Q3 2006 |
| ABI Research | IMS Core Networks for Fixed and Mobile Operators | Q2 2006 |
| ABI Research | Global Residential VoIP Assessment | Q3 2005 |
| Atlantic ACM | Redefining US Long Distance Data Services | September, 2005 |
| Dell'Oro Group | IP Telephony Enterprise | quarterly |
| Dell'Oro Group | IP Telephony Carrier | quarterly |
| Frost & Sullivan | North American Residential VoIP Service Markets | June 2005 |
| Heavy Reading | IP Video and the New Broadband Edge | December, 2005 |
| Heavy Reading | The Future of VOIP: A Heavy Reading Service Provider Survey | September 2005 |
| Heavy Reading | IMS and the Future of Network Convergence | July, 2005 |
| IDC | Softswitch Suppliers: The Battle for VoIP in the Cable Market | January, 2006 |
| In-Stat | Cable Telephony Service: VoIP Drives Subscriber Growth | December, 2005 |
| In-Stat | Global VOIP Has Arrived; Just Not As Expected! | December, 2005 |
| In-Stat | Reaching a Crescendo: The IP PBX Market | December, 2005 |
| In-Stat | Steady Growth Ahead for Hosted VoIP Solutions US IP Centrex/Hosted PBX Services | November, 2005 |
| In-Stat | New World Telecom | October, 2005 |
| In-Stat | Getting Louder: Broadband IP Telephony | October, 2005 |
| In-Stat | Wireless IP Phones Drive Future VoIP Markets | August, 2005 |
| In-Stat | From IADs to Access Gateways and Beyond | July 2005 |
| In-Stat | The Softswitch/Media Gateway Market Revealed | May, 2005 |
| In-Stat | Carrier NGN Migration Strategies Set VoIP Timing | April, 2005 |
| In-Stat | Voice over WiMAX: The Key to Wireless Broadband Profitability? | February, 2005 |
| In-Stat | IP Phones and the Emerging VoIP Markets | November, 2004 |
| In-Stat | Global VoIP Has Arrived; Just Not as Expected! | December, 2005 |
| Insight | Managed Services in an IP World | February, 2006 |
| Insight | SIP, SS7 and Gateways | January 2006 |
| Insight | The 2006 Telecommunications Industry Review | December, 2005 |
| Insight | Fixed Mobile Convergence | August, 2005 |
| Insight | Telecommunications and VOIP in Europe and Africa | 2005 |
| Jupiter Research | US Broadband Telephony Forecast | September, 2005 |
| Lucent Technology | Converged Services Survey | January, 2006 |
| Moriana Group | An Operator Guidebook to IMS | February, 2006 |
| Yankee Group | Global VoIP Regulatory Dashboard Quarterly Summary, First Quarter 2005 | February, 2005 |
| Yankee Group | Technologically Advanced Family Survey | 2005 |
| Yankee Group | Business VoIP Services Poised for Dynamic Growth | January 31, 2006 |
| Yankee Group | Global VoIP Regulatory Dashboard Quarterly Summary | September, 2005 |
| Yankee Group | Global VoIP Regulatory Dashboard Quarterly Summary, Second Quarter 2005 | June, 2005 |
