The Best Telephone Systems For US Businesses

Stay connected with clients and teams through a reliable, all-in-one phone solution. Use our easy comparison chart to find the right telephone system for your business needs.

Julian, Autor
Last updated: July, 2025
Most Popular
9.6
  • Ideal for teams with 3+ employees
  • Trusted by 5.5 Million Users Worldwide
  • All-in-One App for Phone, Video, Meetings, Chat, and Whiteboard
  • Global Phone Coverage
  • Pay-as-you-go Plans with Low Annual Fees
Visit Zoom Free trial

Zoom is a widely used video conferencing platform that supports seamless communication for teams, clients, and audiences of all sizes. With features like HD video, screen sharing, breakout rooms, and live chat, it offers a reliable and easy-to-use solution for virtual meetings, webinars, and remote collaboration across devices.

Zoom also includes productivity tools such as automated meeting summaries, action items, and calendar integration—powered by its built-in AI features. Designed to support businesses of all types, Zoom offers flexible plans and scalable options to match different communication needs.

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9.4
  • Perfect for teams with 3+ employees
  • 100+ CRM Integrations and Premium Features
  • Host Up to 200-Person Video Calls
  • Trusted by Over 400,000 Businesses
Visit RingCentral 14 day free trial

RingCentral is a cloud-based phone system that enables voice calls, messaging, and video meetings across devices. Employees can connect using local, toll-free, or international numbers from anywhere, making it easy to stay in touch with customers and colleagues.

The platform offers built-in AI features, strong security, and 99.999% uptime reliability. With 24/7 support and global coverage, RingCentral provides a flexible communication solution for businesses of all sizes.

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9.2
  • All-in-One Unified Communications Platform
  • AI-Powered Tools in Every Plan
  • 50+ Advanced Features for Businesses of all Sizes
  • 24/7/265 Live Support For all Customers
Visit Ultatel Free Demo

Ultatel combines business phone, video, messaging, and contact center capabilities into a single cloud platform designed to streamline communication. Its advanced AI features offer real-time agent guidance, sentiment analysis, and automated call summaries to enhance customer interactions.

Known for its high reliability and security, Ultatel supports seamless integrations with Microsoft Teams and major CRMs, making it a versatile choice for businesses looking to improve both internal collaboration and customer service.

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8.8
  • Virtual Receptionist for Call Routing, Greetings, and Voicemail
  • Feature-Rich Mobile App
  • Collaborative Shared Voicemail Inbox
  • Great for Small Businesses
Visit Ooma 30-day money back guarantee

Ooma makes it easy for small and mid-sized businesses to get a professional phone system without the complexity. With features like virtual receptionists, mobile and desktop apps, and unlimited calling, it helps teams stay connected and responsive—whether in the office or on the go.

Upgraded plans offer added value with video conferencing, voicemail transcription, call recording, and CRM integrations. With no long-term contracts and simple setup, Ooma delivers a flexible, cost-effective solution built to grow with your business.

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What to look for in Phone Systems:

Consider these key factors when selecting a telephone system:

1. Scalability: Ensure it can grow with your business.

2. Features and Functionality: Look for essential features and prioritize your communication needs.

3. Reliability: Check uptime guarantees and disaster recovery options.

4. Ease of Use: Choose an intuitive system with simple configuration and call management.

5. Integration Capabilities: Assess the ability to integrate with other business tools.

6. Cost and Value: Evaluate the overall cost and long-term benefits.

7. Support and Maintenance: Reliable customer support and proactive maintenance are important.

8. Security: Verify encryption and compliance with industry standards.

Editor’s Top Picks

Editor's Choice
9.6
Trusted by 5.5 million users, this all-in-one app offers global phone, video, chat, and more—with flexible, low-cost plans for seamless communication.
Visit Zoom
9.4
RingCentral offers unified calls, messages and meetings, including real-time AI and conversation intelligence, for businesses with 3 or more employees.
Visit RingCentral

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