Reliable Business Phone Service Tailored To You

$18.95 Unlimited Calling. No contracts. Free Phones for 5+ Users

OnSIP proudly provides low-cost cloud phone service to thousands of businesses. For almost 20 years, customers have chosen OnSIP for its patented reliability and unparalleled US-based support.

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We offer:

  • Quick & easy setup
  • Highest-rated customer support
  • United States-based customer support
  • Free mobile & desktop apps
  • Free unlimited video conferencing
  • Free desk phones for new accounts with 5 or more users

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Trusted by over 100,000 customer accounts

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Lucas Acosta

CEO, Foojee

I loved OnSIP's approach of offering an easy-to-use cloud service that works with any SIP phone. ... It’s clear they stay focused on what customers want.

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Brian Frias

Technology Manager, Masterfit Enterprises

I congratulate the ones that do the hiring [at OnSIP] for finding a team of awesome and knowledgeable employees.

erin-hendricks

Erin Hendricks

Administrative Coordinator, Gauge Interactive

With every call, they’ve been patient, friendly, and incredibly helpful ... I would recommend OnSIP based on their customer service alone.

anoush-dorville

Anoush D’Orville

President, ADVisory

You have to search long and hard for a service that comes near to OnSIP in terms of friendly and responsive support, pricing, and reliability.