G2 Vendor Directory

Zoom Phone vs. CallTower

A side-by-side comparison based on G2 review data.

MetricZoom Phone

by Zoom

CallTower

by CallTower

Overall rating4.64.3
Review count2,683388
Ease of use9.48.9
Ease of setup9.28.7
Quality of support8.98.9
Meets requirements9.49.2
NPS76.92889653.926702
Small Business51.8%25.2%
Mid-Market33.4%63.3%
Enterprise14.9%11.5%
Total page views3,417937
Total LLM citations17,6761,241

Zoom Phone

The AI-first cloud phone system built for modern work. Zoom Phone brings reliable calling, collaboration, and AI together in one simple app that keeps teams connected, from wherever they work. With AI Companion included, teams get instant summaries, prioritized voicemails, and actionable next steps to stay productive without the busywork. Built on Zoom’s trusted platform, Zoom Phone delivers 99.999% uptime, global coverage in 49+ countries, and flexible Bring Your Own Carrier (BYOC) options. Compliance is built-in, including HIPAA, GDPR, and FedRAMP.

Pros

  • Ease of Use
  • Video Conferencing
  • Reliability
  • Easy Communication
  • Video Quality
  • Features

CallTower

Since 2002, CallTower has been at the forefront of transforming global communication, emerging as a leader in enterprise-class cloud communication, collaboration, and CX solutions. We empower businesses with cutting-edge technologies like Microsoft® Teams Operator Connect, Webex by Cisco®, Zoom Phone, and AI-driven contact center solutions, including Webex Contact Center, Five9, and Genesys.

Pros

  • Customer Support
  • Helpful
  • Reliability
  • Ease of Use
  • Customer Service
  • Easy Setup