About OnSIP

Category: VoIP
VoIP provider OnSIP provides a complete business phone system replacement that's simple and easy to use. Small and medium-sized businesses rely on OnSIP for superior voice and video communication with unparalleled reliability, security, and support.

Company: OnSip

OnSIP is a powerful but simple unified communication service with over 100,000 customer accounts, providing the benefits of on-demand phone systems without the inflexibility of traditional phone systems.  OnSIP is the name of the service that was founded by the Junction Networks company.  OnSIP is now part of Intrado, an innovative company that delivers enterprise collaboration services.

In-Depth Analysis

0 Overall
Price 3.5
Ease Of Use 4.0
Features 3.5
Support 4.5


  • Easy to use desktop applications
  • Admin API
  • Caller groups
  • Dial by name directory


  • Features can get pricy

OnSIP Comparisons

Plans & Pricing

OnSIP has a very unique and unusual pricing scheme, with three plans: Basic, Unlimited, and Voice and Video Chat. The first two are priced monthly per user and offer various features, but seem to be priced in order to motivate you to choose the Unlimited plan.

OnSIP allows you to use their softphone option, mobile app option, or desk phone option. For new accounts, the Unlimited plan includes free Polycom desk phones and headsets, just to be sure that you won’t even consider the Basic plan!

/mo /user
/mo /user
Minimum 5 users
Sayso Voice & Video Chat Starter
Sayso Voice & Video Chat Pro


The Basic plan has a very rudimentary set of features, with additional features, such as call parking, call recording, auto attendants, and ring groups, each costing quite a bit of money (anywhere from $4.95 to $19.95 for each feature!) With its initial cost of $49.95/user/mo, the addition of all the features you want can result in an extraordinarily high cost per user. As a result, it is unlikely that anyone would choose this option.


The Unlimited plan, as its name suggests, delivers an unlimited number of these features for free, at less than half the price of the Basic plan per user per month! ($18.95/user/mo). The only stipulation is that you must purchase a minimum of five users. So it really is a one-way street to choose the Unlimited plan over the Basic one.

Sayso Voice & Video Chat

Now the third option, the Voice and Video chat plan is a completely different offering altogether. This in itself has two sub plans, the Starter plan, which is free, and the Pro plan that permits you to receive voice and video calls directly through your website. To use one of these two sub plans, you must have at least one subscription for a Basic or Unlimited plan so that these calls can be routed to an active extension.

Ease of Use

OnSIP is very simple to deploy and to manage. The OnSIP app for desktop computers as well as smartphones is intuitive and easy to use. All of the interfaces provided, including management and application interfaces, don’t need a telecom guru to decipher them. Most users report that they had no problem in any technical aspect of the service. Even the desk phones are preprogrammed, so you simply have to plug them in.

Customer Support

OnSIP has a dedicated blog on their website that includes many different resources such as VoIP solution descriptions, testimonials, case studies, small business tips, as well as a resource library.

24/7 Help & Support
24/7 Help & Support
24/7 is available
Phone Support
Phone Support
Get in touch via general inquiries or contact a direct agent
Live Online Chat
Live Online Chat
24/7 email, web, and chat support
Use email to contact sales, support and general enquiries
Features & Functionality
General Features

OnSIP offers a number of beneficial features, such as (but not limited to):

Advanced voicemail features

OnSIP makes voicemail faster, more efficient and more accessible. You can get your voicemail sent directly to your email. From there, you can listen to the .wav file attachment, call the OnSIP voicemail system with your extension and pin, or listen to your voicemail using the OnSIP application.

Intuitive auto-attendant

With OnSIP, setting up an auto-attendant is very straightforward. You can maximize its true potential by playing a pre-recorded message to all your callers prompting them to select different numbers to get connected to particular people or departments.


With OnSIP, you can divide and conquer. If your business is divided into different teams, you can use groups to manage a sea of callers efficiently. For example, you can set up a ring strategy for your sales team so that your leads are always easily identified from other callers.

Desktop Apps

OnSIP also offers free-to-download desktop applications. You can download said applications for Windows, Mac, and Linux platforms.

  • Salesforce integration
  • Google integration
  • Office365 integration
  • Zendesk integration
  • Online Backup and Storage
  • Virtual phone numbers
  • International Telephone
  • Android APP Support
  • IOS App Support
  • Operator Services
  • Internet fax
  • Worldwide Service
  • Use via computer
  • Use via cellphones
  • Use via phones
  • Use via mobile app
  • Call holding
  • Call forwarding
  • Call Logs
  • Call Transfer
  • Call waiting
  • 3-Way-Calling
  • Call Blocking
  • Call 911
  • Call Queuing (ACD)
  • Caller ID
Advanced Calling
  • SMS Messaging
  • Music on hold
  • Voicemail to email transcriptions
  • Follow me
  • Call Conferencing
  • Dial-by-name directory
  • Do Not Disturb (DND)
  • Push to Talk
  • Multiple Devices on One Extension
  • Mobile app calling
  • Virtual Receptionist
  • Multi-Line Hunt Groups

Although initially the pricing issue was a little bit confusing, OnSIP does redeem itself in the fact that it has a very comprehensive support infrastructure, with online chat and live video chat available for most of the day. Its features are also quite comprehensive for the needs of any small to medium-sized business, with various options for end devices including both softphones, as well as desk phones.

Lazaros Agapidis
Author: Lazaros Agapidis
Lazaros is a Telecommunications and Networking Specialist with over twenty years of professional experience, primarily with Voice over IP networks implementing both small and large scale telephony solutions with multiple vendors. He has worked with multiple multi-site organizations in Europe and North America, in both the public and private sector.

OnSIP User Reviews

Jacky F
02-10 employees
Used for: 6-12 months
19 Apr - 2021

Onsip review

The configuration is exceptional with this VoIP! The support team helped me with all my many questions, specifically during set up. Being able to route calls wherever I need is the best part of onsip.


Great price which saved me from a hefty mobile bill. I especially like that all voicemails get sent to my email.


SMS texting isn't a feature yet.

Janet B
Electrical/Electronic Manufacturing, 51-200 employees
Used for: 1-2 years
04 Oct - 2021

OnSIP is fantastic

I highly recommend OnSIP. It offers excellent service at an affordable price. I use the service at my small manufacturing facility. Having managed the IT department of a large organization, I recall that traditional phone services cost us ten times as much.


-The support team is extremely responsive
-Supports a wide range of IP phones.