Prominent Vendors
• 8?8
• Cisco
• Google
• LogMeIn
• Microsoft
• Mitel
• RingCentral
• Vonage

Other Prominent Vendors
• Alcatel Lucent Enterprise
• Cloud Connect
• Dialpad
• Digerati Technologies
• Fuze
• Intrado
• Masergy
• Nextiva
• NTT Communications
• Orange SA
• Revation Systems
• Starblue
• Verizon
• Windstream
• Zoom