Side-by-Side Comparison
| Metric | CallTower | Sangoma |
|---|---|---|
| Founded | ||
| Founded | 2002 | 1984 older |
| Headquarters | ||
| Headquarters | South Jordan, United States | Markham, Canada |
| Employees | ||
| Employees | 248 | 619 larger |
| Industry | ||
| Industry | Messaging, Telecom | Hardware, Information Technology, Telecom |
| Funding Stage | ||
| Funding Stage | Private Equity | Post Ipo Equity |
| Total Funding | ||
| Total Funding | Not tracked yet | $116.65M |
| Funding Rounds | ||
| Funding Rounds | 2 | 3 |
| Services | ||
| Services | Unified Communications as a Service (UCaaS), Contact Center as a Service (CCaaS), Collaboration and Integration Solutions, AI-Driven Communication Technologies, 24/7/365 Support | Cloud, Hybrid, and On-Premises Unified Communications, Managed Network & Connectivity, Managed Security Services, Productivity Apps, SIP Trunking & Faxing |
| Target Customers | ||
| Target Customers | Enterprises seeking advanced communication solutions, Organizations transitioning from legacy telephony systems, Businesses requiring seamless integration with Microsoft and Cisco platforms, Companies in need of global voice and network connectivity | Hospitality Industry, Healthcare Providers, Retail Businesses, Educational Institutions, Manufacturing Companies |
| Taxonomy | ||
| Taxonomy | Cloud Communication, Collaboration Solutions, Enterprise-Class Communication, Microsoft Teams Operator Connect, AI-Driven Contact Center Solutions, CCaaS, CX Optimization, Unified Communications, VoIP Integration, Digital Transformation, Webex By Cisco, Zoom Phone, Contact Center Integration, Workforce Management Consulting, Global Enterprise Voice | Unified Communications, SIP Trunking, VoIP, Asterisk, FreePBX, Cloud Communications, Hybrid Communications, On-Premises Solutions, Security Solutions, Contact Center Solutions, Wholesale Voice, Session Border Controller, PBX Systems, UCaaS |
| Website | ||
| Website | calltower.com | sangoma.com |
About CallTower
CallTower, founded in 2002, has consistently positioned itself as a pioneer in the field of global communication. The company specializes in enterprise-class cloud communication and collaboration solutions, aiming to empower businesses with state-of-the-art technologies. Central to its offerings are...
About Sangoma
Sangoma Technologies Corporation, with its slogan "Empowering businesses with essential communications", is a distinguished player in the global business communications landscape. Founded in 1984 and headquartered in Canada, Sangoma has cemented its position as a leader by providing secure, reliable...
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Compiled from the BounceWatch company index. We last looked at CallTower on 17 May 2026, and Sangoma on 13 Mar 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.