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  • Month-to-month contracts
  • Free trial (no credit card required)
  • Free phone offer with plan
  • US-based in-house support
  • 5-user minimum for unlimited plan
  • No hot-desking or faxing features
  • Lack of native SMS and team messaging solutions
  • Limited third-party integrations

OnSIP is a business VoIP solution provider founded in 2004 and based in Manhattan, New York. They serve over 100,000 SMBs across various industries. Their services include unified communication tools like softphone apps, remote work tools, website chat, and video conferencing. You can build your own hosted VoIP plan or bundle all features to save costs. OnSIP's cloud-hosted PBX offers call management and secure communication services, including end-to-end encryption, SDES-SRTP encryption, customizable anti-spam filters, geographically distributed cloud, industry-leading reliability, and call routing and recording features. They have an excellent reputation and received multiple awards, including the Excellence in Customer Service Award from Business Intelligence Group for 2019-2023 and recognition as a FrontRunner in 2024 by Software Advice. They have an A+ rating with no complaints from BBB and receive positive feedback from users.

Quick Stats
  • Free Desktop App : True
  • Free Video Conferencing : True
  • Business Size Supported : Small to medium-sized businesses (SMBs)
  • Transparent Pricing : True
  • Pricing Model : Per month per user, monthly flat rate
  • Customer Experience : Excellent
  • Trustpilot Score : 4.5 out of 5
  • BBB Rating : A+
Selling Points
  • Indefinite trial available
  • Free onboarding services
  • System works with any device
Services Offered
  • Call Analytics
  • Call Monitoring (User Management)
  • Call Recording & Voicemails
  • Cellphone Compatability
  • Cloud-Based Services
  • Desktop Application
  • Existing Hardware Compatability
  • International Telephone
  • International Toll-Free Number
  • Internet Fax
  • Local Numbers for All Users
  • Mobile App
  • Real-Time Reports
  • Undisclosed
    Team Messaging
  • Third-Party Software Integrations
  • Unified Communications as a Service (UCaaS)
  • Unlimited Calls
  • Undisclosed
    Unlimited SMS
  • Video Conferencing
  • Virtual Assistant/Receptionist
  • Virtual Phone Numbers
  • Voicemail to Email
  • Android
  • iOS
  • macOS
  • Windows
In-House Hardware Options
  • Undisclosed
    Adapters (Analog to VoIP)
  • Undisclosed
  • Undisclosed
    Intercom & Paging
  • IP Conference Phones
  • IP Desk Phones
  • Undisclosed
    Wi-Fi (Cordless) Phones
  • Documentation
  • In-Person
  • Live Online
  • Videos
  • Webinars
Customer Support
  • Demos
  • Email
  • FAQs
  • Help Guides
  • Live Chat
  • Mobile Application
  • Phone
  • Social Media
What are the main features of OnSIP?
Does OnSIP support SMS or team messaging services?
What is the pricing structure for OnSIP?
Does OnSIP integrate with other software?
What is the difference between OnSIP and regular phones?