1 Report Overview 1.1 Study Scope 1.2 Market Analysis by Type 1.2.1 Global On-Premise Phone System Market Size Growth Rate by Type: 2016 VS 2021 VS 2027 1.2.2 Hardware 1.2.3 Software 1.3 Market by Application 1.3.1 Global On-Premise Phone System Market Share by Application: 2016 VS 2021 VS 2027 1.3.2 Enterprise 1.3.3 Government 1.3.4 Others 1.4 Study Objectives 1.5 Years Considered 2 Global Growth Trends 2.1 Global On-Premise Phone System Market Perspective (2016-2027) 2.2 On-Premise Phone System Growth Trends by Regions 2.2.1 On-Premise Phone System Market Size by Regions: 2016 VS 2021 VS 2027 2.2.2 On-Premise Phone System Historic Market Share by Regions (2016-2021) 2.2.3 On-Premise Phone System Forecasted Market Size by Regions (2022-2027) 2.3 On-Premise Phone System Industry Dynamic 2.3.1 On-Premise Phone System Market Trends 2.3.2 On-Premise Phone System Market Drivers 2.3.3 On-Premise Phone System Market Challenges 2.3.4 On-Premise Phone System Market Restraints 3 Competition Landscape by Key Players 3.1 Global Top On-Premise Phone System Players by Revenue 3.1.1 Global Top On-Premise Phone System Players by Revenue (2016-2021) 3.1.2 Global On-Premise Phone System Revenue Market Share by Players (2016-2021) 3.2 Global On-Premise Phone System Market Share by Company Type (Tier 1, Tier 2 and Tier 3) 3.3 Players Covered: Ranking by On-Premise Phone System Revenue 3.4 Global On-Premise Phone System Market Concentration Ratio 3.4.1 Global On-Premise Phone System Market Concentration Ratio (CR5 and HHI) 3.4.2 Global Top 10 and Top 5 Companies by On-Premise Phone System Revenue in 2020 3.5 On-Premise Phone System Key Players Head office and Area Served 3.6 Key Players On-Premise Phone System Product Solution and Service 3.7 Date of Enter into On-Premise Phone System Market 3.8 Mergers & Acquisitions, Expansion Plans 4 On-Premise Phone System Breakdown Data by Type 4.1 Global On-Premise Phone System Historic Market Size by Type (2016-2021) 4.2 Global On-Premise Phone System Forecasted Market Size by Type (2022-2027) 5 On-Premise Phone System Breakdown Data by Application 5.1 Global On-Premise Phone System Historic Market Size by Application (2016-2021) 5.2 Global On-Premise Phone System Forecasted Market Size by Application (2022-2027) 6 North America 6.1 North America On-Premise Phone System Market Size (2016-2027) 6.2 North America On-Premise Phone System Market Size by Type 6.2.1 North America On-Premise Phone System Market Size by Type (2016-2021) 6.2.2 North America On-Premise Phone System Market Size by Type (2022-2027) 6.2.3 North America On-Premise Phone System Market Size by Type (2016-2027) 6.3 North America On-Premise Phone System Market Size by Application 6.3.1 North America On-Premise Phone System Market Size by Application (2016-2021) 6.3.2 North America On-Premise Phone System Market Size by Application (2022-2027) 6.3.3 North America On-Premise Phone System Market Size by Application (2016-2027) 6.4 North America On-Premise Phone System Market Size by Country 6.4.1 North America On-Premise Phone System Market Size by Country (2016-2021) 6.4.2 North America On-Premise Phone System Market Size by Country (2022-2027) 6.4.3 United States 6.4.4 Canada 7 Europe 7.1 Europe On-Premise Phone System Market Size (2016-2027) 7.2 Europe On-Premise Phone System Market Size by Type 7.2.1 Europe On-Premise Phone System Market Size by Type (2016-2021) 7.2.2 Europe On-Premise Phone System Market Size by Type (2022-2027) 7.2.3 Europe On-Premise Phone System Market Size by Type (2016-2027) 7.3 Europe On-Premise Phone System Market Size by Application 7.3.1 Europe On-Premise Phone System Market Size by Application (2016-2021) 7.3.2 Europe On-Premise Phone System Market Size by Application (2022-2027) 7.3.3 Europe On-Premise Phone System Market Size by Application (2016-2027) 7.4 Europe On-Premise Phone System Market Size by Country 7.4.1 Europe On-Premise Phone System Market Size by Country (2016-2021) 7.4.2 Europe On-Premise Phone System Market Size by Country (2022-2027) 7.4.3 Germany 7.4.4 France 7.4.5 U.K. 7.4.6 Italy 7.4.7 Russia 7.4.8 Nordic 8 Asia-Pacific 8.1 Asia-Pacific On-Premise Phone System Market Size (2016-2027) 8.2 Asia-Pacific On-Premise Phone System Market Size by Type 8.2.1 Asia-Pacific On-Premise Phone System Market Size by Type (2016-2021) 8.2.2 Asia-Pacific On-Premise Phone System Market Size by Type (2022-2027) 8.2.3 Asia-Pacific On-Premise Phone System Market Size by Type (2016-2027) 8.3 Asia-Pacific On-Premise Phone System Market Size by Application 8.3.1 Asia-Pacific On-Premise Phone System Market Size by Application (2016-2021) 8.3.2 Asia-Pacific On-Premise Phone System Market Size by Application (2022-2027) 8.3.3 Asia-Pacific On-Premise Phone System Market Size by Application (2016-2027) 8.4 Asia-Pacific On-Premise Phone System Market Size by Region 8.4.1 Asia-Pacific On-Premise Phone System Market Size by Region (2016-2021) 8.4.2 Asia-Pacific On-Premise Phone System Market Size by Region (2022-2027) 8.4.3 China 8.4.4 Japan 8.4.5 South Korea 8.4.6 Southeast Asia 8.4.7 India 8.4.8 Australia 9 Latin America 9.1 Latin America On-Premise Phone System Market Size (2016-2027) 9.2 Latin America On-Premise Phone System Market Size by Type 9.2.1 Latin America On-Premise Phone System Market Size by Type (2016-2021) 9.2.2 Latin America On-Premise Phone System Market Size by Type (2022-2027) 9.2.3 Latin America On-Premise Phone System Market Size by Type (2016-2027) 9.3 Latin America On-Premise Phone System Market Size by Application 9.3.1 Latin America On-Premise Phone System Market Size by Application (2016-2021) 9.3.2 Latin America On-Premise Phone System Market Size by Application (2022-2027) 9.3.3 Latin America On-Premise Phone System Market Size by Application (2016-2027) 9.4 Latin America On-Premise Phone System Market Size by Country 9.4.1 Latin America On-Premise Phone System Market Size by Country (2016-2021) 9.4.2 Latin America On-Premise Phone System Market Size by Country (2022-2027) 9.4.3 Mexico 9.4.4 Brazil 10 Middle East & Africa 10.1 Middle East & Africa On-Premise Phone System Market Size (2016-2027) 10.2 Middle East & Africa On-Premise Phone System Market Size by Type 10.2.1 Middle East & Africa On-Premise Phone System Market Size by Type (2016-2021) 10.2.2 Middle East & Africa On-Premise Phone System Market Size by Type (2022-2027) 10.2.3 Middle East & Africa On-Premise Phone System Market Size by Type (2016-2027) 10.3 Middle East & Africa On-Premise Phone System Market Size by Application 10.3.1 Middle East & Africa On-Premise Phone System Market Size by Application (2016-2021) 10.3.2 Middle East & Africa On-Premise Phone System Market Size by Application (2022-2027) 10.3.3 Middle East & Africa On-Premise Phone System Market Size by Application (2016-2027) 10.4 Middle East & Africa On-Premise Phone System Market Size by Country 10.4.1 Middle East & Africa On-Premise Phone System Market Size by Country (2016-2021) 10.4.2 Middle East & Africa On-Premise Phone System Market Size by Country (2022-2027) 10.4.3 Turkey 10.4.4 Saudi Arabia 10.4.5 UAE 11 Key Players Profiles 11.1 Sangoma Technologies 11.1.1 Sangoma Technologies Company Details 11.1.2 Sangoma Technologies Business Overview 11.1.3 Sangoma Technologies On-Premise Phone System Introduction 11.1.4 Sangoma Technologies Revenue in On-Premise Phone System Business (2016-2021) 11.1.5 Sangoma Technologies Recent Development 11.2 Infiniti Telecommunications 11.2.1 Infiniti Telecommunications Company Details 11.2.2 Infiniti Telecommunications Business Overview 11.2.3 Infiniti Telecommunications On-Premise Phone System Introduction 11.2.4 Infiniti Telecommunications Revenue in On-Premise Phone System Business (2016-2021) 11.2.5 Infiniti Telecommunications Recent Development 11.3 Marco 11.3.1 Marco Company Details 11.3.2 Marco Business Overview 11.3.3 Marco On-Premise Phone System Introduction 11.3.4 Marco Revenue in On-Premise Phone System Business (2016-2021) 11.3.5 Marco Recent Development 11.4 Grandstream Networks 11.4.1 Grandstream Networks Company Details 11.4.2 Grandstream Networks Business Overview 11.4.3 Grandstream Networks On-Premise Phone System Introduction 11.4.4 Grandstream Networks Revenue in On-Premise Phone System Business (2016-2021) 11.4.5 Grandstream Networks Recent Development 11.5 ServiceMark Telecom 11.5.1 ServiceMark Telecom Company Details 11.5.2 ServiceMark Telecom Business Overview 11.5.3 ServiceMark Telecom On-Premise Phone System Introduction 11.5.4 ServiceMark Telecom Revenue in On-Premise Phone System Business (2016-2021) 11.5.5 ServiceMark Telecom Recent Development 11.6 Radius Technologies 11.6.1 Radius Technologies Company Details 11.6.2 Radius Technologies Business Overview 11.6.3 Radius Technologies On-Premise Phone System Introduction 11.6.4 Radius Technologies Revenue in On-Premise Phone System Business (2016-2021) 11.6.5 Radius Technologies Recent Development 11.7 Anavon Technology 11.7.1 Anavon Technology Company Details 11.7.2 Anavon Technology Business Overview 11.7.3 Anavon Technology On-Premise Phone System Introduction 11.7.4 Anavon Technology Revenue in On-Premise Phone System Business (2016-2021) 11.7.5 Anavon Technology Recent Development 11.8 Acefone 11.8.1 Acefone Company Details 11.8.2 Acefone Business Overview 11.8.3 Acefone On-Premise Phone System Introduction 11.8.4 Acefone Revenue in On-Premise Phone System Business (2016-2021) 11.8.5 Acefone Recent Development 11.9 Swcomms 11.9.1 Swcomms Company Details 11.9.2 Swcomms Business Overview 11.9.3 Swcomms On-Premise Phone System Introduction 11.9.4 Swcomms Revenue in On-Premise Phone System Business (2016-2021) 11.9.5 Swcomms Recent Development 11.10 BT Group 11.10.1 BT Group Company Details 11.10.2 BT Group Business Overview 11.10.3 BT Group On-Premise Phone System Introduction 11.10.4 BT Group Revenue in On-Premise Phone System Business (2016-2021) 11.10.5 BT Group Recent Development 12 Analyst's Viewpoints/Conclusions 13 Appendix 13.1 Research Methodology 13.1.1 Methodology/Research Approach 13.1.2 Data Source 13.2 Disclaimer 13.3 Author Details

List of Tables Table 1. Global On-Premise Phone System Market Size Growth Rate by Type (US$ Million):2016 VS 2021 VS 2027 Table 2. Key Players of Hardware Table 3. Key Players of Software Table 4. Global On-Premise Phone System Market Size Growth by Application (US$ Million): 2016 VS 2021 VS 2027 Table 5. Global On-Premise Phone System Market Size by Regions (US$ Million): 2016 VS 2021 VS 2027 Table 6. Global On-Premise Phone System Market Size by Regions (2016-2021) & (US$ Million) Table 7. Global On-Premise Phone System Market Share by Regions (2016-2021) Table 8. Global On-Premise Phone System Forecasted Market Size by Regions (2022-2027) & (US$ Million) Table 9. Global On-Premise Phone System Market Share by Regions (2022-2027) Table 10. On-Premise Phone System Market Trends Table 11. On-Premise Phone System Market Drivers Table 12. On-Premise Phone System Market Challenges Table 13. On-Premise Phone System Market Restraints Table 14. Global On-Premise Phone System Revenue by Players (2016-2021) & (US$ Million) Table 15. Global On-Premise Phone System Market Share by Players (2016-2021) Table 16. Global Top On-Premise Phone System Players by Company Type (Tier 1, Tier 2 and Tier 3) (based on the Revenue in On-Premise Phone System as of 2020) Table 17. Ranking of Global Top On-Premise Phone System Companies by Revenue (US$ Million) in 2020 Table 18. Global 5 Largest Players Market Share by On-Premise Phone System Revenue (CR5 and HHI) & (2016-2021) Table 19. Key Players Headquarters and Area Served Table 20. Key Players On-Premise Phone System Product Solution and Service Table 21. Date of Enter into On-Premise Phone System Market Table 22. Mergers & Acquisitions, Expansion Plans Table 23. Global On-Premise Phone System Market Size by Type (2016-2021) (US$ Million) Table 24. Global On-Premise Phone System Revenue Market Share by Type (2016-2021) Table 25. Global On-Premise Phone System Forecasted Market Size by Type (2022-2027) (US$ Million) Table 26. Global On-Premise Phone System Revenue Market Share by Type (2022-2027) & (US$ Million) Table 27. Global On-Premise Phone System Market Size Share by Application (2016-2021) & (US$ Million) Table 28. Global On-Premise Phone System Revenue Market Share by Application (2016-2021) Table 29. Global On-Premise Phone System Forecasted Market Size by Application (2022-2027) (US$ Million) Table 30. Global On-Premise Phone System Revenue Market Share by Application (2022-2027) & (US$ Million) Table 31. North America On-Premise Phone System Market Size by Type (2016-2021) (US$ Million) Table 32. North America On-Premise Phone System Market Size by Type (2022-2027) & (US$ Million) Table 33. North America On-Premise Phone System Market Size by Application (2016-2021) (US$ Million) Table 34. North America On-Premise Phone System Market Size by Application (2022-2027) & (US$ Million) Table 35. North America On-Premise Phone System Market Size by Country (2016-2021) & (US$ Million) Table 36. North America On-Premise Phone System Market Size by Country (2022-2027) & (US$ Million) Table 37. Europe On-Premise Phone System Market Size by Type (2016-2021) (US$ Million) Table 38. Europe On-Premise Phone System Market Size by Type (2022-2027) & (US$ Million) Table 39. Europe On-Premise Phone System Market Size by Application (2016-2021) (US$ Million) Table 40. Europe On-Premise Phone System Market Size by Application (2022-2027) & (US$ Million) Table 41. Europe On-Premise Phone System Market Size by Country (2016-2021) & (US$ Million) Table 42. Europe On-Premise Phone System Market Size by Country (2022-2027) & (US$ Million) Table 43. Asia-Pacific On-Premise Phone System Market Size by Type (2016-2021) (US$ Million) Table 44. Asia-Pacific On-Premise Phone System Market Size by Type (2022-2027) & (US$ Million) Table 45. Asia-Pacific On-Premise Phone System Market Size by Application (2016-2021) (US$ Million) Table 46. Asia-Pacific On-Premise Phone System Market Size by Application (2022-2027) & (US$ Million) Table 47. Asia-Pacific On-Premise Phone System Market Size by Region (2016-2021) & (US$ Million) Table 48. Asia-Pacific On-Premise Phone System Market Size by Region (2022-2027) & (US$ Million) Table 49. Latin America On-Premise Phone System Market Size by Type (2016-2021) (US$ Million) Table 50. Latin America On-Premise Phone System Market Size by Type (2022-2027) & (US$ Million) Table 51. Latin America On-Premise Phone System Market Size by Application (2016-2021) (US$ Million) Table 52. Latin America On-Premise Phone System Market Size by Application (2022-2027) & (US$ Million) Table 53. Latin America On-Premise Phone System Market Size by Country (2016-2021) & (US$ Million) Table 54. Latin America On-Premise Phone System Market Size by Country (2022-2027) & (US$ Million) Table 55. Middle East & Africa On-Premise Phone System Market Size by Type (2016-2021) (US$ Million) Table 56. Middle East & Africa On-Premise Phone System Market Size by Type (2022-2027) & (US$ Million) Table 57. Middle East & Africa On-Premise Phone System Market Size by Application (2016-2021) (US$ Million) Table 58. Middle East & Africa On-Premise Phone System Market Size by Application (2022-2027) & (US$ Million) Table 59. Middle East & Africa On-Premise Phone System Market Size by Country (2016-2021) & (US$ Million) Table 60. Middle East & Africa On-Premise Phone System Market Size by Country (2022-2027) & (US$ Million) Table 61. Sangoma Technologies Company Details Table 62. Sangoma Technologies Business Overview Table 63. Sangoma Technologies On-Premise Phone System Product Table 64. Sangoma Technologies Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 65. Sangoma Technologies Recent Development Table 66. Infiniti Telecommunications Company Details Table 67. Infiniti Telecommunications Business Overview Table 68. Infiniti Telecommunications On-Premise Phone System Product Table 69. Infiniti Telecommunications Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 70. Infiniti Telecommunications Recent Development Table 71. Marco Company Details Table 72. Marco Business Overview Table 73. Marco On-Premise Phone System Product Table 74. Marco Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 75. Marco Recent Development Table 76. Grandstream Networks Company Details Table 77. Grandstream Networks Business Overview Table 78. Grandstream Networks On-Premise Phone System Product Table 79. Grandstream Networks Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 80. Grandstream Networks Recent Development Table 81. ServiceMark Telecom Company Details Table 82. ServiceMark Telecom Business Overview Table 83. ServiceMark Telecom On-Premise Phone System Product Table 84. ServiceMark Telecom Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 85. ServiceMark Telecom Recent Development Table 86. Radius Technologies Company Details Table 87. Radius Technologies Business Overview Table 88. Radius Technologies On-Premise Phone System Product Table 89. Radius Technologies Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 90. Radius Technologies Recent Development Table 91. Anavon Technology Company Details Table 92. Anavon Technology Business Overview Table 93. Anavon Technology On-Premise Phone System Product Table 94. Anavon Technology Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 95. Anavon Technology Recent Development Table 96. Acefone Company Details Table 97. Acefone Business Overview Table 98. Acefone Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 99. Acefone Recent Development Table 100. Swcomms Company Details Table 101. Swcomms Business Overview Table 102. Swcomms On-Premise Phone System Product Table 103. Swcomms Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 104. Swcomms Recent Development Table 105. BT Group Company Details Table 106. BT Group Business Overview Table 107. BT Group On-Premise Phone System Product Table 108. BT Group Revenue in On-Premise Phone System Business (2016-2021) & (US$ Million) Table 109. BT Group Recent Development Table 110. Research Programs/Design for This Report Table 111. Key Data Information from Secondary Sources Table 112. Key Data Information from Primary Sources List of Figures Figure 1. Global On-Premise Phone System Market Share by Type: 2020 VS 2027 Figure 2. Hardware Features Figure 3. Software Features Figure 4. Global On-Premise Phone System Market Share by Application: 2020 VS 2027 Figure 5. Enterprise Case Studies Figure 6. Government Case Studies Figure 7. Others Case Studies Figure 8. On-Premise Phone System Report Years Considered Figure 9. Global On-Premise Phone System Market Size (US$ Million), Year-over-Year: 2016-2027 Figure 10. Global On-Premise Phone System Market Size (US$ Million), 2016 VS 2021 VS 2027 Figure 11. Global On-Premise Phone System Market Share by Regions: 2020 VS 2027 Figure 12. Global On-Premise Phone System Market Share by Regions (2022-2027) Figure 13. Global On-Premise Phone System Market Share by Players in 2020 Figure 14. Global Top On-Premise Phone System Players by Company Type (Tier 1, Tier 2 and Tier 3) (based on the Revenue in On-Premise Phone System as of 2020 Figure 15. The Top 10 and 5 Players Market Share by On-Premise Phone System Revenue in 2020 Figure 16. Global On-Premise Phone System Revenue Market Share by Type (2016-2021) Figure 17. Global On-Premise Phone System Revenue Market Share by Type (2022-2027) Figure 18. North America On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 19. North America On-Premise Phone System Market Share by Type (2016-2027) Figure 20. North America On-Premise Phone System Market Share by Application (2016-2027) Figure 21. North America On-Premise Phone System Market Share by Country (2016-2027) Figure 22. United States On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 23. Canada On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 24. Europe On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 25. Europe On-Premise Phone System Market Share by Type (2016-2027) Figure 26. Europe On-Premise Phone System Market Share by Application (2016-2027) Figure 27. Europe On-Premise Phone System Market Share by Country (2016-2027) Figure 28. Germany On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 29. France On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 30. U.K. On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 31. Italy On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 32. Russia On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 33. Nordic On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 34. Asia-Pacific On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 35. Asia-Pacific On-Premise Phone System Market Share by Type (2016-2027) Figure 36. Asia-Pacific On-Premise Phone System Market Share by Application (2016-2027) Figure 37. Asia-Pacific On-Premise Phone System Market Share by Region (2016-2027) Figure 38. China On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 39. Japan On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 40. South Korea On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 41. Southeast Asia On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 42. India On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 43. Australia On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 44. Latin America On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 45. Latin America On-Premise Phone System Market Share by Type (2016-2027) Figure 46. Latin America On-Premise Phone System Market Share by Application (2016-2027) Figure 47. Latin America On-Premise Phone System Market Share by Country (2016-2027) Figure 48. Mexico On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 49. Brazil On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 50. Middle East & Africa On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 51. Middle East & Africa On-Premise Phone System Market Share by Type (2016-2027) Figure 52. Middle East & Africa On-Premise Phone System Market Share by Application (2016-2027) Figure 53. Middle East & Africa On-Premise Phone System Market Share by Country (2016-2027) Figure 54. Turkey On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 55. Saudi Arabia On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 56. UAE On-Premise Phone System Market Size YoY Growth (2016-2027) & (US$ Million) Figure 57. Sangoma Technologies Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 58. Infiniti Telecommunications Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 59. Marco Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 60. Grandstream Networks Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 61. ServiceMark Telecom Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 62. Radius Technologies Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 63. Anavon Technology Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 64. Acefone Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 65. Swcomms Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 66. BT Group Revenue Growth Rate in On-Premise Phone System Business (2016-2021) Figure 67. Bottom-up and Top-down Approaches for This Report Figure 68. Data Triangulation Figure 69. Key Executives Interviewed

Sangoma Technologies Infiniti Telecommunications Marco Grandstream Networks ServiceMark Telecom Radius Technologies Anavon Technology Acefone Swcomms BT Group