Spring into deals for new U.S. business accounts with 5+ users! Speak with a rep now: 1 (800) 801-3381

Hosted VoIP solutions built for your business

OnSIP’s business VoIP communications are designed to match how you work - giving you the phone service you need for the price you want. Get started today.

1st screen_mobile-3

Trusted by over 100,000 businesses

maac-logo arstechnica-logo-1 iheartmedia-logo-1 PATH

You make the calls

Our fully customizable phone system is a breeze to set up. Easily add and remove users and features to suit your business needs. And only pay for what you need with month-to-month contracts.

OnSIP VoIP solution
You make the calls-2

VoIP tech you can trust

We designed a system that’s so bulletproof, we patented it. Enjoy an always up, always on VoIP platform that's cloud-based, has high redundancy, and can be used by businesses to comply with their HIPAA obligations.

Our patented technology
Tech you can trust-1

Hardware on the house

Make calls directly from the app, or use a desktop phone if you prefer. Best-in-class VoIP phones are included with the Unlimited plan (5 users minimum).

Free phone offer
Hardware on the house-1

Hosted VoIP Service Features

Auto attendants

Auto Attendants allow you to set up a touchtone menu for your callers. For example, press 1 for the Sales, 2 for Support, etc.

Learn more >

Group similar users together, such as Billing, and ring them all simultaneously from a menu option or extension.

Learn more >
Dial-by-name directory

Create a company directory for callers to reach employees by spelling their names via touch tones.

Learn more >
ACD queues

Automatically distribute calls to your sales or support representatives and provide a waiting room for overflow callers.

Learn more >
911 emergency dialing

Grants users access to 911 services by defining a physical location for each user.

Learn more >
Inbound bridge

Use a local, international or toll-free number from another provider with the hosted PBX features of OnSIP.

Learn more >
Phone numbers

OnSIP has numbers available for purchase from many different area codes.

Learn more >
Voicemail boxes

Setup a mailbox to manage voice messages and custom greetings.

Learn more >

Allow callers to record messages when you're away and have those messages sent to your email as an audio file, or listen to them in our app.

Learn more >

Play a recorded message to your callers when they reach a menu or enter into a queue.

Learn more >
Find me anywhere

Receive incoming calls on all of your OnSIP-registered devices, such as desk phones, our desktop app, and our mobile app.

Learn more >
Business hour rules

Set up your company’s standard business hours free of charge using business hour rules.

Learn more >
HD calling

A.K.A. as HD Voice, it's an expanded frequency range of audio signals, resulting in higher sound quality in phone calls.

Learn more >
Busy lamp field

Enable the buttons on your desk phone to display the availability of other users, such as Busy or Ringing.

Learn more >
Enhanced music on hold

Standard Music on Hold includes 3 genres. Upgrading to Enhanced unlocks Internet radio streams and uploaded audio files.

Learn more >
HD conference suite

Host an audio call for up to 15 simultaneous callers at an extension of your choosing.

Learn more >
Call blocking

Specify phone numbers that you do not want to receive calls from. OnSIP will automatically block any incoming calls from them!

Learn more >
Call parking

Allow one user to put a call on hold from one device and another user to continue the conversation from any other device.

Learn more >
Music on hold

Music on hold settings allow you to control the music your callers hear when they are placed on hold. 3 genres included: Jazz, Classical, and Elevator.

Learn more >
Personal ring strategy

A user can set how long his/her ring time is and where to send a call if it's not answered (to a voicemail box, an external phone number, or any other destination in the OnSIP PBX).

Learn more >
International dialing

Dial international phone numbers from your OnSIP account.

Learn more >
Call management

Handle business calls with ease: Place them on hold, mute them, and transfer them to colleagues.

Learn more >
Call recording

Automatically upload recordings of all calls to and from any user to any compatible cloud storage provider.

Learn more >
Standard calling area

Our standard calling area extends to more than 20 countries and is included in the unlimited plan.

Learn more >
Enhanced ACD queue

With our Enhanced ACD Queues, you can utilize a dashboard that displays a real-time queue overview along with historical reports.

Learn more >
Call whisper, barge, monitor

Listen in on Enhanced Queue calls, speak directly to the call agent, or join the call with the agent and caller.

Learn more >
sayso website chat

Give your website visitors the option to voice/video call your representatives directly through their browser.

Learn more >
Enhanced queue call recording

Automatically upload recordings of all calls to and from any agent in a queue to any compatible cloud storage provider.

Learn more >
Queue reporting

Access and download historical reports on queue call stats and agent performance. You can also have them emailed out on a periodic basis.

Learn more >
HubSpot integration

Display a caller's HubSpot record in the OnSIP app, with a link to open the full record in a new tab.

Learn more >
Zendesk integration

When an agent answers a call, a Zendesk ticket is automatically created, assigned to the agent, and populated with basic call info.

Learn more >
OnSIP assistant for Google Chrome

Click on phone numbers in your Chrome browser window to dial them automatically.

Learn more >
Free on-network calling

Extension-to-extension dial, + dial SIP addresses, all for free on your OnSIP account.

Learn more >
OnSIP desktop app

OnSIP's softphone app, available for Mac, Windows, and Linux computers.

Learn more >
OnSIP web app

OnSIP's softphone app, available in Chrome, Firefox, or Opera browsers.

Learn more >
OnSIP mobile app

OnSIP's softphone app, available for iOS and Android devices.

Learn more >
Video calling

In the OnSIP web, desktop, and mobile apps, make and receive video calls to users who also have video-enabled devices.

Learn more >
5-way video conferencing

In the OnSIP web and desktop apps, host and join video conference calls with internal collagues as well as external participants (up to 5 people on the call).

Learn more >
Team page

A visual directory of your staff, complete with voice and video call buttons and availability status icons.

Learn more >
Professional call links

A dedicated webpage for an individual staff member, complete with voice and video call buttons and an availability status icon.

Learn more >
Simulring phones

Receive incoming calls on all of your OnSIP-registered devices, such as desk phones, our desktop app, and our mobile app.

Learn more >
External phone numbers

Add phone numbers from outside of your OnSIP account, to be used for extension dialing, failover destinations, and other call routing situations.

Learn more >
Extension dialing (from anywhere)

Dial extensions in your OnSIP account from any OnSIP-registered phone.

Learn more >

Have an existing number you'd like to keep? OnSIP will assist with porting that number over from your previous provider.

Learn more >
User-friendly admin portal

Administer your OnSIP account with setup wizards, edit features in real-time, manage payment + contact information, and download invoices, all in our web app.

Learn more >
Multi-location support

Add users from different locations. Also, up to 10 registrations/user allowed.

Learn more >
SIP domain hosting

Use your own domain name with your OnSIP Hosted PBX.

Learn more >
Easy provisioning (boot server)

Automatically provision supported VoIP phones.

Learn more >
Call detail records

Access and download your account's call detail records for user-specified time periods.

Learn more >
Reporting dashboard

Account overview that provides you with key data, monthly plan information, and access to creating support tickets in the legacy admin portal (coming soon to our web app admin portal!).

Learn more >
Network status updates

View our Network status page for up-to-date network alerts.

Learn more >
Unlimited access to U.S. support

Award-winning, tenured, and U.S.-based Client Engagement Team provides support via calls, support tickets, chat, and emails.

Learn more >
Real-time changes

Moves, adds, and changes to features in your OnSIP account occur in real-time.

Learn more >
Extensive knowledgebase

Detailed articles provide step-by-step instructions and video walkthroughs of setting up OnSIP features.

Learn more >
Developer APIs

Add real-time communications to your app in no time. Leverage the OnSIP platform, by the creators of sip.js.

Learn more >

People love us!

Gartner Digital Markets has awarded OnSIP its exclusive Best Customer Support badge, based on high marks and strong reviews left by OnSIP customers.

Customer service award

Read more about OnSIP


Gartner Digital Markets Again Awards OnSIP a Best Customer Support Badge!

OnSIP receives a Gartner Digital Markets Best Badge, which highlights highest-rated products and services based on verified user reviews.

2024 award win
10 Sample Call Center Greeting Scripts Featured Image (iStock-1032472578)

10 Sample Call Center Greeting Scripts

Is your auto attendant clear and easy to understand? Here are 10 sample greeting scripts to make a good first impression on the phone.

Script examples
Picture of a telephone receiver off of the hook.

Does Do Not Disturb Send Calls to Voicemail?

Where does a call go if your smartphone, VoIP phone, or softphone is set to Do Not Disturb? Read on for the answers!

Learn about Do Not Disturb

Want more details?

We're sorry--it looks like you are located in a country that OnSIP doesn't service. If you are located in the U.S. or Canada and you received this message, please contact us at (800) 801-3381.