Learn more about OnSIP with customer reviews, pricing, and frequently asked questions.

Updated on February 6th, 2023

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OnSIP is a cloud-based phone system for businesses. OnSIP's business VoIP phone technology provides simple communications solutions to businesses of all sizes with features like voicemail, auto attendant and call groups.

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VoIP, Phone System, Video Conferencing, Fax, and more.

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Monthly Pricing


$18.95 /user.


$49.95 /user.

*A minimum of five users applies.

**Calling minutes are not included. The standard calling rate is 2.9¢ per minute.

OnSIP also offers individual features that can be added to each plan. You can view the complete set of features at the bottom of the pricing page.

OnSIP Reviews

Pros: Easily integrates with most CRM systems and great voicemail-to-email feature.

Cons: No text messaging feature available.

Bottomline: Excellent platform to efficiently manage business communication processes.

Key Information:

Legal Name

Junction Networks Inc.


Robert Wolpov

Founding Date

Jun 01, 2004


4387 W. Swamp Rd., Ste. 284, Doylestown, PA 18902

Number of Employees


Number of Customers





1 (800) 801-3381




What is OnSIP?

OnSIP is a cloud-based phone system for businesses. Their business VoIP phone technology provides businesses of all sizes with simple communications solutions with features like voicemail, auto attendant, and call groups.

What is OnSIP trunking?

OnSIP Trunking is OnSIP's new SIP-based PSTN trunking service that replaces the legacy PSTN Gateway product. It leverages the OnSIP hosted PBX platform, which offers additional reliability.

How can I get a free SIP account?

OnSIP comes with a free softphone application for mobile and desktop, which you can use with any standard SIP application. Also, register your SIP address on any SIP-based desk phone for free voice and video calling.

What is the price range for OnSIP's VoIP phone plans?

OnSIP's pricing starts at $18.95 per user per month.

What is a cloud SIP?

SIP is a technical acronym that stands for Session Initiation Protocol. A cloud SIP is an online program like OnSIP VoIP that can initiate communication between two points using an internet connection.

Your cloud SIP provider uses this technology to convert your phone system from conventional phone lines to a digital communications network.

Cloud Voip

What are some cloud VoIP providers?

How do I perform an OnSIP cloud VoIP test on my network?

You can get a free VoIP network test by going to info.onsip.com/voip-test. The test will check your overall network performance and gauge upload and download speeds, plus identify any issues which may lead to poor audio quality.

What is Junction Networks?

Junction Networks Inc. is the parent company of OnSIP. OnSIP is Junction Network's SIP cloud software solution.