United States · Telecommunications
United States · TelecommunicationsCallTower
Why reach out now
What the record says about CallTower as a customer or partner.
- Bigger than its listed size231 people list it on LinkedIn, above its 51-100 band: it has likely grown since.
- Has bought 1 companyIt has done deals before: a sign it is open to partnerships.
Against its peers
Set against 15,774 Telecommunications companies in United States. The ring marks the typical peer.
Across all 5.9M companies: larger than 75% of those with a size listed; older than 40% of those with a founding year; website ranked #2,264,222 in the world, about 9k visits a month. 231 people list it on LinkedIn, and 6,031 follow it.
About CallTower
CallTower is at the forefront of transforming global communication, redefining how businesses connect and collaborate across the globe. Since 2002, CallTower has grown into a global leader in enterprise-class cloud communications and collaboration solutions, empowering businesses to thrive in the digital age. Leveraging advanced technologies like Microsoft® Teams Operator Connect, Direct Routing and GCC High Teams Direct Routing, Webex by Cisco®, Zoom Phone, and AI-powered contact center solutions, CallTower… Read all
CallTower is at the forefront of transforming global communication, redefining how businesses connect and collaborate across the globe. Since 2002, CallTower has grown into a global leader in enterprise-class cloud communications and collaboration solutions, empowering businesses to thrive in the digital age. Leveraging advanced technologies like Microsoft® Teams Operator Connect, Direct Routing and GCC High Teams Direct Routing, Webex by Cisco®, Zoom Phone, and AI-powered contact center solutions, CallTower delivers seamless and reliable connectivity tailored to the unique needs of enterprises worldwide. CallTower empowers business communications by integrating features like one-click failover, advanced analytics, seamless CRM integration, and cutting-edge AI, redefining operational efficiency. In 2025, CallTower acquired North America’s trusted contact center expert, Inoria, amplifying its CCaaS and CX capabilities. Inoria drives the evolution of contact center operations by offering personalized optimization, implementation, and integration services powered by Conversational AI and advanced analytics. Together, CallTower and Inoria deliver actionable insights, enhanced customer experiences, and cutting-edge solutions that guide enterprises through their digital transformation journeys. With a vision focused on innovation and a commitment to excellence, CallTower continues to advance cloud communications, empowering businesses across the globe to achieve unparalleled success.
CollaborationMessagingTelecommunicationsNo Capital ExpenditureCiscoCollaborationUCaaS IntegrationsCloud CommunicationsMicrosoft TeamsUCaaSCCaaSOffice 365MicrosoftVoIPZoomWebex CallingCollab
One of 15,774 Telecommunications companies in United States, and of 44,837 in the industry worldwide.
Funding, as listed
What the source datasets report. We have not watched these rounds ourselves.
Undisclosed
raised in total across 2 rounds
Last raised Nov 2023, 2 years ago
- Rounds
- 2
- Latest round
- Private equity
- Investors
- 22 leading
Corporate family
Where it sits in its group, and the deals it has done.
Key facts
Who started it and how it trades.
- Founded by
- John Trimmer
- Apps
- 3
Every detail we hold
Everything the source datasets list about CallTower, field by field. Contact details are held but never shown.
The company8 fields
- Name
- CallTower
- Type
- For profit
- Status
- Private
- Founded
- 2002
- Founders
- John Trimmer
- Industry
- Telecommunications
- Categories
- Collaboration, Messaging, Telecommunications
- Specialities
- No Capital Expenditure, Cisco, Collaboration, UCaaS Integrations, Cloud Communications, Microsoft Teams, UCaaS, CCaaS, Office 365, Microsoft, VoIP, Zoom, Webex Calling, Collab
Where4 fields
- City
- South Jordan
- Region
- Utah
- Country
- United States
- Markets
- Western US
Size and reach6 fields
- Staff band
- 51-100
- People on LinkedIn
- 231
- LinkedIn followers
- 6,031
- Web traffic rank
- #2,264,222
- Monthly web visits
- 8,825
- Apps
- 3
Show 9 more fieldsShow fewer fields
Funding, as listed6 fields
- Rounds
- 2
- Latest round
- Private equity
- Latest round date
- Nov 2023
- Investors
- 2
- Lead investors
- 2
- Listing status
- private
Corporate family1 field
- Acquisitions made
- 1
About this record2 fields
- Sources
- Crunchbase, LinkedIn
- Last imported
- Sept 2026
Growth, as the source summarises it
CallTower launched the Operator Connect for Microsoft Teams Telephony Solution across EMEA.
Companies like CallTower
Telecommunications in United States: 15,774 in the directory.
Phoenix Tower InternationalBoca Raton · 251-500 people4.8x the followersFFinisar CorporationSunnyvale · 1001-5000 peoplefounded 14 years earlierAAndean Telecom PartnersFort Lauderdale · 101-250 peoplefounded 9 years later
Vertical Bridge HoldingsDelray Beach · 101-250 peoplefounded 12 years laterSSpeedCastHouston · 1001-5000 people11x the followersBuild a lead list
15,774 Telecommunications companies in United States, filtered by size, age and reach, ready to export with emails on Pro.