CallTower
Boston, Massachusetts, United States · Call Center, Enterprise Software, Hardware
Since its inception in 2002, CallTower has evolved into a global cloud-based, enterprise-class Unified Communications, Contact Center and Collaboration solutions provider for growing organizations worldwide. CallTower provides, integrates and supports industry-leading solutions, including Operator Connect for Microsoft® Teams, Teams Direct Routing, GCC High Teams Direct Routing, Office 365, Cisco®
Key facts
- Headquarters
- Boston, Massachusetts, United States
- Employees
- 240
- Industries
- Call Center, Enterprise Software, Hardware
- Website
- calltower.com
- Company page
Recent activity at CallTower
- : CallTower acquires Momentum Telecom's voice business
- : CallTower Expands Partnership with Tollring to Enhance Compliance Call Recording and AI Analytics for Global Customers.
- : CallTower launches CT Unite CRM Integration and CallTower Analytics for Webex Calling, enhancing business communication and insights.
- : CallTower and Five9 Announce Global Select Resale Partnership
Leadership
- Rafael Renteria, Sr. National Director of Channel Sales
- Paul Holden, Vice President EMEA Sales
- Brent Walden, Senior Account Executive
- William Rubio, Chief Revenue Officer
- Aaron Britton, VP of Mergers and Acquisitions
Verified email and direct lines for CallTower’s decision-makers are on Fundz. See plans — or book a 15-minute walkthrough.
Employee benefit plans
CallTower files 3 employee benefit plans with the U.S. Department of Labor, including a retirement plan. The next plan year renews in Dec 2026.
CallTower in the news
- CallTower Transforms Its Global Communications Platform - GlobeNewswire (Oct 01, 2026)
- BV Investment Partners Announces Sale of CallTower - PR Newswire (Apr 02, 2026)
- Court Square Capital Partners Announces Acquisition of CallTower - Yahoo Finance (Apr 02, 2026)
- CallTower Recognized Among Utah’s Fastest-Growing Companies in 2026 - GlobeNewswire (Aug 27, 2026)
- CallTower Expands AI-for-CX Portfolio Through Strategic Partnership with SESTEK - GlobeNewswire (Jul 15, 2026)
- CallTower Expands its Channel Partnership Team - UC Today (Sep 02, 2026)
- From UCaaS to CX Powerhouse: How CallTower Is Redefining CCaaS Delivery - CX Today (Sep 10, 2025)
- CallTower Continues Global Operator Connect Expansion - UC Today (Jul 29, 2024)
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About CallTower: questions and answers
What does CallTower do?
Since its inception in 2002, CallTower has evolved into a global cloud-based, enterprise-class Unified Communications, Contact Center and Collaboration solutions provider for growing organizations worldwide. CallTower provides, integrates and supports industry-leading solutions, including Operator Connect for Microsoft® Teams, Teams Direct Routing, GCC High Teams Direct Routing, Office 365, Cisco®
Where is CallTower headquartered?
CallTower is headquartered in Boston, Massachusetts, United States.
How many employees does CallTower have?
CallTower has about 240 employees.
Who leads CallTower?
Paul Holden is a Vice President EMEA Sales at CallTower.
What is the latest news on CallTower?
On Oct 01, 2026, CallTower acquires Momentum Telecom's voice business
Source: Fundz records from SEC filings, press releases and company announcements. How Fundz measures data accuracy