1 Introduction to Research & Analysis Reports 1.1 Enterprise Unified Communication & Collaboration Market Definition 1.2 Market Segments 1.2.1 Segment by Type 1.2.2 Segment by Application 1.3 United States Enterprise Unified Communication & Collaboration Market Overview 1.4 Methodology & Sources of Information 1.4.1 Research Methodology 1.4.2 Research Process 1.4.3 Base Year 2 United States Enterprise Unified Communication & Collaboration Overall Market Size 2.1 United States Enterprise Unified Communication & Collaboration Market Size: 2021 VS 2027 2.2 United States Enterprise Unified Communication & Collaboration Revenue, Prospects & Forecasts: 2016-2027 2.3 Key Market Trends, Opportunity, Drivers and Restraints 2.3.1 Market Opportunities & Trends 2.3.2 Market Drivers 2.3.3 Market Restraints 3 Company Landscape 3.1 Top Enterprise Unified Communication & Collaboration Players in United States Market 3.2 Top United States Enterprise Unified Communication & Collaboration Companies Ranked by Revenue 3.3 United States Enterprise Unified Communication & Collaboration Revenue by Companies 3.4 Top 3 and Top 5 Enterprise Unified Communication & Collaboration Companies in United States Market, by Revenue in 2020 3.5 Companies Enterprise Unified Communication & Collaboration Product Type 3.6 Tier 1, Tier 2 and Tier 3 Enterprise Unified Communication & Collaboration Players in United States Market 3.6.1 List of Tier 1 Enterprise Unified Communication & Collaboration Companies in United States 3.6.2 List of Tier 2 and Tier 3 Enterprise Unified Communication & Collaboration Companies in United States 4 Sights by Type 4.1 Overview 4.1.1 By Type - United States Enterprise Unified Communication & Collaboration Market Size Markets, 2021 & 2027 4.1.2 On-Premise 4.1.3 Cloud 4.2 By Type - United States Enterprise Unified Communication & Collaboration Revenue & Forecasts 4.2.1 By Type - United States Enterprise Unified Communication & Collaboration Revenue, 2016-2021 4.2.2 By Type - United States Enterprise Unified Communication & Collaboration Revenue, 2022-2027 4.2.3 By Type - United States Enterprise Unified Communication & Collaboration Revenue Market Share, 2016-2027 5 Sights by Application 5.1 Overview 5.1.1 By Application - United States Enterprise Unified Communication & Collaboration Market Size, 2021 & 2027 5.1.2 IT & Telecom 5.1.3 BFSI 5.1.4 Retail 5.1.5 Healthcare 5.1.6 Government 5.2 By Application - United States Enterprise Unified Communication & Collaboration Revenue & Forecasts 5.2.1 By Application - United States Enterprise Unified Communication & Collaboration Revenue, 2016-2021 5.2.2 By Application - United States Enterprise Unified Communication & Collaboration Revenue, 2022-2027 5.2.3 By Application - United States Enterprise Unified Communication & Collaboration Revenue Market Share, 2016-2027 6 Enterprise Unified Communication & Collaboration Companies Profiles 6.1 CISCO 6.1.1 CISCO Company Details 6.1.2 CISCO Business Overview 6.1.3 CISCO Enterprise Unified Communication & Collaboration Introduction 6.1.4 CISCO Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.1.5 CISCO Recent Developments 6.2 Microsoft 6.2.1 Microsoft Company Details 6.2.2 Microsoft Business Overview 6.2.3 Microsoft Enterprise Unified Communication & Collaboration Introduction 6.2.4 Microsoft Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.2.5 Microsoft Recent Developments 6.3 Avaya 6.3.1 Avaya Company Details 6.3.2 Avaya Business Overview 6.3.3 Avaya Enterprise Unified Communication & Collaboration Introduction 6.3.4 Avaya Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.3.5 Avaya Recent Developments 6.4 IBM 6.4.1 IBM Company Details 6.4.2 IBM Business Overview 6.4.3 IBM Enterprise Unified Communication & Collaboration Introduction 6.4.4 IBM Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.4.5 IBM Recent Developments 6.5 Mitel 6.5.1 Mitel Company Details 6.5.2 Mitel Business Overview 6.5.3 Mitel Enterprise Unified Communication & Collaboration Introduction 6.5.4 Mitel Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.5.5 Mitel Recent Developments 6.6 Nokia 6.6.1 Nokia Company Details 6.6.2 Nokia Business Overview 6.6.3 Nokia Enterprise Unified Communication & Collaboration Introduction 6.6.4 Nokia Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.6.5 Nokia Recent Developments 6.7 NEC 6.7.1 NEC Company Details 6.7.2 NEC Business Overview 6.7.3 NEC Enterprise Unified Communication & Collaboration Introduction 6.7.4 NEC Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.7.5 NEC Recent Developments 6.8 Unify 6.8.1 Unify Company Details 6.8.2 Unify Business Overview 6.8.3 Unify Enterprise Unified Communication & Collaboration Introduction 6.8.4 Unify Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.8.5 Unify Recent Developments 6.9 Huawei 6.9.1 Huawei Company Details 6.9.2 Huawei Business Overview 6.9.3 Huawei Enterprise Unified Communication & Collaboration Introduction 6.9.4 Huawei Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.9.5 Huawei Recent Developments 6.10 Genesys 6.10.1 Genesys Company Details 6.10.2 Genesys Business Overview 6.10.3 Genesys Enterprise Unified Communication & Collaboration Introduction 6.10.4 Genesys Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.10.5 Genesys Recent Developments 6.11 Polycom 6.11.1 Polycom Company Details 6.11.2 Polycom Business Overview 6.11.3 Polycom Enterprise Unified Communication & Collaboration Introduction 6.11.4 Polycom Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.11.5 Polycom Recent Developments 6.12 Verizon 6.12.1 Verizon Company Details 6.12.2 Verizon Business Overview 6.12.3 Verizon Enterprise Unified Communication & Collaboration Introduction 6.12.4 Verizon Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.12.5 Verizon Recent Developments 6.13 AT&T 6.13.1 AT&T Company Details 6.13.2 AT&T Business Overview 6.13.3 AT&T Enterprise Unified Communication & Collaboration Introduction 6.13.4 AT&T Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.13.5 AT&T Recent Developments 6.14 DXC Technology 6.14.1 DXC Technology Company Details 6.14.2 DXC Technology Business Overview 6.14.3 DXC Technology Enterprise Unified Communication & Collaboration Introduction 6.14.4 DXC Technology Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.14.5 DXC Technology Recent Developments 6.15 BroadSoft 6.15.1 BroadSoft Company Details 6.15.2 BroadSoft Business Overview 6.15.3 BroadSoft Enterprise Unified Communication & Collaboration Introduction 6.15.4 BroadSoft Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) 6.15.5 BroadSoft Recent Developments 7 Conclusion 8 Appendix 8.1 Note 8.2 Examples of Clients 8.3 Author Details 8.4 Disclaimer

List of Tables Table 1. Enterprise Unified Communication & Collaboration Market Opportunities & Trends in United States Market Table 2. Enterprise Unified Communication & Collaboration Market Drivers in United States Market Table 3. Enterprise Unified Communication & Collaboration Market Restraints in United States Market Table 4. Key Players of Enterprise Unified Communication & Collaboration in United States Market Table 5. Top Enterprise Unified Communication & Collaboration Players in United States Market, Ranking by Revenue (2019) Table 6. United States Enterprise Unified Communication & Collaboration Revenue by Companies, (US$, Mn), 2016-2021 Table 7. United States Enterprise Unified Communication & Collaboration Revenue Share by Companies, 2016-2021 Table 8. Companies Enterprise Unified Communication & Collaboration Product Type Table 9. List of Tier 1 Enterprise Unified Communication & Collaboration Companies, Revenue (US$, Mn) in 2020 and Market Share Table 10. List of Tier 2 and Tier 3 Enterprise Unified Communication & Collaboration Companies, Revenue (US$, Mn) in 2020 and Market Share Table 11. By Type – United States Enterprise Unified Communication & Collaboration Revenue, (US$, Mn), 2021 & 2027 Table 12. By Type - United States Enterprise Unified Communication & Collaboration Revenue (US$, Mn), 2016-2021 Table 13. By Type - United States Enterprise Unified Communication & Collaboration Revenue (US$, Mn), 2022-2027 Table 14. By Application – United States Enterprise Unified Communication & Collaboration Revenue, (US$, Mn), 2021 VS 2027 Table 15. By Application - United States Enterprise Unified Communication & Collaboration Revenue (US$, Mn), 2016-2021 Table 16. By Application - United States Enterprise Unified Communication & Collaboration Revenue (US$, Mn), 2022-2027 Table 17. CISCO Company Details Table 18. CISCO Business Overview Table 19. CISCO Enterprise Unified Communication & Collaboration Product Table 20. CISCO Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 21. CISCO Recent Developments Table 22. Microsoft Company Details Table 23. Microsoft Business Overview Table 24. Microsoft Enterprise Unified Communication & Collaboration Product Table 25. Microsoft Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 26. Microsoft Recent Developments Table 27. Avaya Company Details Table 28. Avaya Business Overview Table 29. Avaya Enterprise Unified Communication & Collaboration Product Table 30. Avaya Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 31. Avaya Recent Developments Table 32. IBM Company Details Table 33. IBM Business Overview Table 34. IBM Enterprise Unified Communication & Collaboration Product Table 35. IBM Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 36. IBM Recent Developments Table 37. Mitel Company Details Table 38. Mitel Business Overview Table 39. Mitel Enterprise Unified Communication & Collaboration Product Table 40. Mitel Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 41. Mitel Recent Developments Table 42. Nokia Company Details Table 43. Nokia Business Overview Table 44. Nokia Enterprise Unified Communication & Collaboration Product Table 45. Nokia Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 46. Nokia Recent Developments Table 47. NEC Company Details Table 48. NEC Business Overview Table 49. NEC Enterprise Unified Communication & Collaboration Product Table 50. NEC Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 51. NEC Recent Developments Table 52. Unify Company Details Table 53. Unify Business Overview Table 54. Unify Enterprise Unified Communication & Collaboration Product Table 55. Unify Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 56. Unify Recent Developments Table 57. Huawei Company Details Table 58. Huawei Business Overview Table 59. Huawei Enterprise Unified Communication & Collaboration Product Table 60. Huawei Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 61. Huawei Recent Developments Table 62. Genesys Company Details Table 63. Genesys Business Overview Table 64. Genesys Enterprise Unified Communication & Collaboration Product Table 65. Genesys Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 66. Genesys Recent Developments Table 67. Polycom Company Details Table 68. Polycom Business Overview Table 69. Polycom Enterprise Unified Communication & Collaboration Product Table 70. Polycom Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 71. Polycom Recent Developments Table 72. Verizon Company Details Table 73. Verizon Business Overview Table 74. Verizon Enterprise Unified Communication & Collaboration Product Table 75. Verizon Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 76. Verizon Recent Developments Table 77. AT&T Company Details Table 78. AT&T Business Overview Table 79. AT&T Enterprise Unified Communication & Collaboration Product Table 80. AT&T Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 81. AT&T Recent Developments Table 82. DXC Technology Company Details Table 83. DXC Technology Business Overview Table 84. DXC Technology Enterprise Unified Communication & Collaboration Product Table 85. DXC Technology Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 86. DXC Technology Recent Developments Table 87. BroadSoft Business Overview Table 88. BroadSoft Company Details Table 89. BroadSoft Enterprise Unified Communication & Collaboration Product Table 90. BroadSoft Enterprise Unified Communication & Collaboration Revenue in United States Market (2016-2021) & (US$ Million) Table 91. BroadSoft Recent Developments List of Figures Figure 1. Enterprise Unified Communication & Collaboration Segment by Type Figure 2. Enterprise Unified Communication & Collaboration Segment by Application Figure 3. United States Enterprise Unified Communication & Collaboration Market Overview: 2020 Figure 4. United States Enterprise Unified Communication & Collaboration Market Size: 2021 VS 2027 (US$, Mn) Figure 5. United States Enterprise Unified Communication & Collaboration Revenue, 2016-2027 (US$, Mn) Figure 6. The Top 3 and 5 Players Market Share by Enterprise Unified Communication & Collaboration Revenue in 2020 Figure 7. By Type - United States Enterprise Unified Communication & Collaboration Revenue Market Share, 2016-2027 Figure 8. By Application - United States Enterprise Unified Communication & Collaboration Revenue Market Share, 2016-2027 Figure 9. CISCO Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 10. Microsoft Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 11. Avaya Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 12. IBM Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 13. Mitel Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 14. Nokia Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 15. NEC Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 16. Unify Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 17. Huawei Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 18. Genesys Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 19. Polycom Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 20. Verizon Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 21. AT&T Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 22. DXC Technology Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021) Figure 23. BroadSoft Enterprise Unified Communication & Collaboration Revenue Year Over Year Growth (US$, Mn) & (2016-2021)

CISCO Microsoft Avaya IBM Mitel Nokia NEC Unify Huawei Genesys Polycom Verizon AT&T DXC Technology BroadSoft