The OnSIP Insider’s Guide
Everything we know about OnSIP in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
OnSIP
The Insider’s Guide
Hosted VoIP phone system with per-feature pricing
Every plan, grade, refund rule and rival among business phone systems, read from OnSIP’s own pages.
Made by Junction Networks · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from OnSIP’s own pages, its app-store listings and our grades. Every fact in it is on OnSIP’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.0
GPA, above 9 of the 44 other business phone systems we grade
OnSIP is a hosted business phone service sold as a per-user unlimited plan or a pay-as-you-go account, with individual features added and priced one by one. It covers auto attendants, ring groups, call queues, SMS and MMS, and works with SIP phones and its own apps.
To get you started, here are 8 things to know about OnSIP, taken from its own pages and our grades.
It needs phones or apps set up, auto attendants and rules built, and each feature switched on and priced.
- 1
Best for small offices that want phones in a per-user price
OnSIP is a hosted business phone service with phones included in a $18.95 per-user plan, sold month to month.
- 2
Paid plans start at $18.95 a month for each person
As its pricing page puts it: $18.95 per user / month (5-user minimum).
- 3
It runs on 6 platforms
Web, macOS, Windows, Linux, iOS and Android.
- 4
Call handling
Auto attendants, business-hour rules, ring groups, call parking, transfers, call screening and a dial-by-name directory.
- 5
Call center options
ACD queues, live queue dashboard, historical reporting, and monitor, whisper and barge, with queue features priced per user.
- 6
SMS and MMS
Business texting from your number in the apps; the Unlimited plan includes 250 messages per account, with 1 cent overage.
- 7
A 2.0 GPA, above 9 of 44
That is against the other business phone systems we grade, on value, the free plan, features, ease of use and platforms.
- 8
Keep it
To replace OnSIP you would be making phone numbers and calls carried over the phone network. That is not a weekend's work, with an AI app builder or without one.
OnSIP at a glance
- Pricing
- Paid, from $18.95 per user / month (5-user minimum)
- Free plan
- No
- Free trial
- None stated
- Runs on
- Web, macOS, Windows, Linux, iOS, Android
- Made by
- Junction Networks
- Category
- Business Phone Systems
- Our grade
- 2.0 GPA, fair
The report card
Best for small offices that want phones in a per-user price
OnSIP is a hosted business phone service with phones included in a $18.95 per-user plan, sold month to month. But the plan needs 5 users, call recording and enhanced queues are paid add-ons, and the sign-up page says it does not serve anywhere outside the U.S. and Canada.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | C | $18.95 per user a month with a 5-user minimum, against a category middle of $19. The $49.95 pay-as-you-go account bills calls at 3.2 cents a minute on top. |
| Free plan and trial | F | No free plan and no trial on record. The listing shows only the paid Unlimited and Pay-as-you-go accounts. |
| Features | C | Auto attendants, ring groups, ACD queues, SMS and MMS are all listed. But recording is $4.95 per user a month, enhanced queues $14.95 and E911 $1.80, so the basics come with a meter. |
| Ease of use | C | No store rating on record. It needs phones or apps set up, auto attendants and rules built, and each feature switched on and priced. |
| Platforms and integrations | A | Softphone apps for Mac, Windows, Linux, iOS and Android, a browser app and any SIP device, plus HubSpot, Zendesk and Odoo and an open API. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who OnSIP is for
- Fits if you run a small office of five or more in the U.S. or Canada and want desk phones in the price
- Works for teams that already own SIP phones and would rather pay per feature
Who it is not for
- Skip it if you have fewer than 5 users, because Unlimited has a 5-user minimum
- Not for you if you are outside the U.S. and Canada, which the sign-up page says it does not serve
- Pricey if you need recording or queues, at $4.95 and $14.95 per user a month on top
- Watch out: E911 is $1.80 per user a month and each extra number is $2.00
- Watch out: there is no free plan and no trial
Good to know
Good for
- Small offices that want phones included in a per-user price
- Low-volume businesses that prefer paying per feature
- Teams that bring their own SIP phones or use the apps
Worth knowing
- Unlimited needs at least 5 users; the Pay-as-you-go plan does not include calling minutes.
- Many features are paid add-ons: call recording is $4.95 per user a month and enhanced queues $14.95 per user a month.
- E911 is $1.80 per user a month and each extra phone number is $2.00 a month.
- The sign-up page says OnSIP does not service locations outside the U.S. and Canada.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$18.95
A month to start, for each person
OnSIP is a paid product, starting at $18.95 per user / month (5-user minimum).
The listing shows only the paid Unlimited and Pay-as-you-go accounts.
Unlimited
$18.95
per user / month, 5-user minimum
Unlimited standard calling, VoIP phones included, unlimited auto attendants, ring groups and recording users.
Pay-as-you-go
$49.95
per month for the account
For low call volume: calling billed at 3.2 cents a minute, 1 auto attendant, 3 recording users, inbound SMS and MMS.
Read from onsip.com on Nov 12, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
6
Places it runs: Web, macOS, Windows, Linux, iOS and Android
Hosted VoIP phone system with per-feature pricing. Here is what it does, as its own site describes it, and what it covers: public API, business phone line, business texting.
Auto attendants, ring groups, ACD queues, SMS and MMS are all listed.
- Call handling
- Auto attendants, business-hour rules, ring groups, call parking, transfers, call screening and a dial-by-name directory.
- Call center options
- ACD queues, live queue dashboard, historical reporting, and monitor, whisper and barge, with queue features priced per user.
- SMS and MMS
- Business texting from your number in the apps; the Unlimited plan includes 250 messages per account, with 1 cent overage.
- Apps and phones
- Softphone apps for Mac, Windows, Linux, iOS and Android, a browser app, and any SIP-enabled device.
- Integrations
- Connections to HubSpot, Zendesk and Odoo, a Chrome extension, and an open API.
- Month-to-month terms
- The site describes month-to-month contracts with onboarding included, and lists each add-on feature with its own rate.
Where it runs
- Web
- macOS
- Windows
- Linux
- iOS
- Android
What it works with
- HubSpot
- Zendesk
- Odoo
OnSIP is made by Junction Networks.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
9/44
Other business phone systems it is graded above
OnSIP's GPA of 2.0 is higher than 9 of the 44 other business phone systems we grade, and level with 10.
It stands best on platforms and integrations (A, above 27 of 44) and worst on free plan and trial (F, above 0).
Its paid plans start at $18.95 a month for each person, against a middle price of $19 for the category: 13 of the 32 others that charge start lower.
On features, ease of use and platforms it scores 2.7 out of 4. 4 tools score higher and cost less.
Each grade against the category
Every bar is all 45 business phone systems we grade, cut by the letter each got. OnSIP’s own letter is outlined.
- CValue for moneyAbove 5 of 44
- FFree plan and trialAbove 0 of 44
- CFeaturesAbove 1 of 44
- CEase of useAbove 4 of 44
- APlatforms and integrationsAbove 27 of 44
Price against what you get
Each dot is one of 34 business phone systems. Further left costs less; higher up scores better on features, ease of use and platforms. OnSIP is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace OnSIP you would be making phone numbers and calls carried over the phone network. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 25 of the 44 other business phone systems grade higher. It costs $227.40 a year.
What you could not
- Phone numbers and calls carried over the phone network.
- Texts from a business number, registered with the carriers.
- Apps for macOS, Windows, Linux, iOS and Android that stay in step with each other.
- It is priced for each person, which means accounts and billing for a team.
- It plugs into other products, HubSpot, Zendesk and Odoo among them, and has an API.
What this rests on. OnSIP’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Ooma Office, Phone.com, Nextiva, RingCentral and Vonage Business Communications
The 5 tools OnSIP is most often weighed against, with where each one differs from it.
- 2.4GPA
Ooma Office
From $19.95/mo
Small business phone system with a virtual receptionist, no contract.
- Only OnSIP lists a web app.
- Only OnSIP lists a Linux app.
- Only Ooma Office lists a browser extension.
- 1.8GPA
Phone.com
Paid
Business phone service with apps, texting, fax and answering.
- Only OnSIP lists macOS, Windows and Linux apps.
- Phone.com also covers video calls and online fax.
- 2.2GPA
Nextiva
From $15/mo
Business phone, texting and video with an optional AI receptionist.
- Nextiva also covers transcription, team chat and video calls.
- 3.0GPA
RingCentral
Free trial · from $20/mo
Cloud phone system with texting, fax, video meetings and team chat.
- Only OnSIP lists a Linux app.
- RingCentral also covers transcription, team chat and video calls.
- 2.4GPA
Vonage Business Communications
From $19.99/mo
Business phone lines with texting, video meetings and team chat.
- Only OnSIP lists a Linux app.
- Only Vonage Business Communications lists a browser extension.
- Vonage Business Communications also covers transcription, team chat and video calls.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
11
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is OnSIP free?
No. OnSIP is a paid product, starting at $18.95 per user / month (5-user minimum).
How much does OnSIP cost?
OnSIP lists 2 plans. Unlimited: $18.95 per user / month, 5-user minimum.
What platforms does OnSIP work on?
OnSIP is available on Web, macOS, Windows, Linux, iOS and Android.
Is OnSIP open source?
OnSIP is not described as open source on its own site, as read on Nov 12, 2026.
Does OnSIP have an API?
Yes. OnSIP offers a public API, according to its own site.
What does OnSIP integrate with?
OnSIP's listing names HubSpot, Zendesk and Odoo. A listing names up to eight integrations, so it may connect to more.
Who makes OnSIP?
OnSIP is made by Junction Networks.
What are the alternatives to OnSIP?
The closest alternatives to OnSIP in our directory are Ooma Office, Phone.com, Nextiva, RingCentral and Vonage Business Communications.
How does OnSIP compare with other business phone systems?
OnSIP's GPA of 2.0 is higher than 9 of the 44 other business phone systems we grade, and level with 10.
Is OnSIP good value for money?
ToolGPA grades OnSIP C for value for money. Its paid plans start at $18.95 a month for each person, against a middle price of $19 for the category: 13 of the 32 others that charge start lower.
Could I make my own version of OnSIP?
To replace OnSIP you would be making phone numbers and calls carried over the phone network.
Where this guide comes from
The prices, plans, platforms and features were read from OnSIP’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from OnSIP's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Junction Networks. Prices change, so check onsip.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
5,038
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
5,038
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- OnSIP, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/onsip
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "OnSIP: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/onsip
Know someone choosing between business phone systems?
Send them this guide: toolgpa.com/tools/onsip/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded business phone systems after OnSIP, each with an Insider's Guide of its own.
- Business Phone Systems Insider's GuideEvery one of the 45 business phone systems we grade, compared
- Zadarma Insider's GuideCloud PBX and virtual numbers in 110+ countries, free to start3.2 GPA
- Grasshopper Insider's GuideVirtual business number on your own phone, priced per account3.0 GPA
- RingCentral Insider's GuideCloud phone system with texting, fax, video meetings and team chat3.0 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what OnSIP’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. OnSIP is a trademark of its owner, and this guide is not made, paid for or approved by Junction Networks. Prices and plans change: check onsip.com before you buy.