--- title: "OnSIP Reviews 2026. Verified Reviews, Pros & Cons | Capterra" description: "Is OnSIP the right Business Phone Systems solution for you? Explore 78 verified user reviews from people in industries like yours to make a confident choice." source_url: "https://www.capterra.com/p/158706/OnSIP/reviews/" page_type: "reviews" language: "en" --- OnSIP 4.7 (78) [View alternatives](https://www.capterra.com/p/158706/OnSIP/alternatives/) Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. [Learn more](https://www.capterra.com/our-story/) * * * Last updated August 20th, 2026 # Reviews of OnSIP Ease of use 4.6 Customer Service 4.9 ## Pros and Cons in Reviews TO Terri O ManagerAirlines/Aviation, 2 - 10 employeesUsed the software for: 1-2 years. “I like how where ever I travel I can make and receive calls as long as I have wifi with out clients seeing my personal phone number“ September 16, 2025 LT Leah T Sales ManagerUtilities, 11 - 50 employeesUsed the software for: 1-2 years. “Still has residual "third-party app" feel - mobil is very buggy, signing in/out on multiple devices can be tedious. If I lock my computer screen, I often need to restart the app to get it working.“ July 29, 2025 KM Keith M IT AdministratorNon-Profit Organization Management, 51 - 200 employeesUsed the software for: More than 2 years. “Auto attendants, call groups, routing options, and voicemail features work smoothly and reliably.“ December 9, 2025 SS Sheila S Front Desk ServicesFinancial Services, 11 - 50 employeesUsed the software for: 1-2 years. “We also have issues with transferring calls/often needing to hang up and give it a second try.“ December 9, 2025 SS Sheila S Front Desk ServicesFinancial Services, 11 - 50 employeesUsed the software for: 1-2 years. “We've had relatively few issues with phone service, and when something has occurred or a question has come up, the customer reps have offered polite and helpful service.“ December 9, 2025 HK Hyun K IT Support ManagerReal Estate, 11 - 50 employeesUsed the software for: More than 2 years. “One complaint is the inability to pre-configure the holiday calendar. “ December 10, 2025 TD Tim D PresidentConsumer Goods, 2 - 10 employeesUsed the software for: More than 2 years. “You can setup and forget and when you have need of another feature it is fairly simple to implement. If you have any trouble the tech support personnel are outstanding and patient.“ December 18, 2025 TO Terri O ManagerAirlines/Aviation, 2 - 10 employeesUsed the software for: 1-2 years. “Only con would be when I don't have wifi I can't make or receive calls.“ September 16, 2025 ## Showing most helpful reviews Showing 1-25 of 78 Reviews Sort by: Most Helpful Rating Company Size Reviewer's Role Length of Use Frequency of Use Abigail K. Consultant Design Used the software for: 6-12 months ### "I am in love with OnSIP, It has simplified my life!" April 12, 2019 5.0 My experience has been great with OnSIP. They have exceptional customer service I've received exactly what I needed each time. I have a personal coach who checks in with me every so often to ensure that things are going good as well. I highly, highly recommend using this cost effective service for your at home business! Pros I love that I can now add business lines into my home office for a fraction of the cost of doing it through the local phone company and I have clear crisp phone service. Everytime I have needed customer service I have had an excellent experience and they have taken care of each issue with great care and speed getting me back online and going again quickly. With my home office phone I can have up to 4 lines (depending on the phone you can have many more) and I can tell which is ringing so I know how to answer properly and helps me to be more professional. So, so much easier than having my cell phone ring all the time. Cons It doesn't have a texting feature, I just use Google Voice to get this feature it just means that I have to have 2 seperate numbers for my business. Review Source HK Hyun K. IT Support Manager Real Estate Used the software for: 2+ years ### "Great VoIP solution for a small business" December 10, 2025 5.0 Overall, OnSIP has been a dependable VoIP solution for us. It does what we need it to do, it’s easy to manage, and it supports the way our team works. If you’re looking for a straightforward, flexible, and affordable phone system, it’s your best bet. Pros Solid, reliable system with great call quality. Easy system to manage as an administrator. OnSIP support team is quick to respond with solutions. They are a top-notch team! Cons One complaint is the inability to pre-configure the holiday calendar. This has to be manually configured, and sometimes we might forget to reset it back to regular hours. Alternatives considered [RingEX](https://www.capterra.com/p/242188/RingCentral-MVP/)[Grandstream Wave](https://www.capterra.com/p/168626/Grandstream-Wave/) Reason for choosing OnSIP We chose OnSIP because of the ease of implementation and the cost. Review Source CC Christian C. Operations Manager Law Practice Used the software for: 2+ years ### "Great Cutomer Service- Always. " June 21, 2023 3.0 Pros the Customer service is always on point. I inherited the service. Cons The Mobile feature is not perfect. It would be nice to call an extension and see if the person was available insted of instantly tranferring. Aslo, the mobile ringtone. It's obnoxious. Ringtone options would be good Review Source HR Heather R. Staff Accountant Accounting Used the software for: 1-2 years ### "Onsip is great" September 17, 2025 5.0 Pros Onsip is very user friendly and the customer service is great. You can call support and actually talk to a person in the USA. The online portal is user freindly also. Cons I can not think of a con. When we changed over to them, they were great. I had a dedicated person to help me. Switched from [8x8 Work](https://www.capterra.com/p/187525/Virtual-Office/) Cost and customer service on 8x8 was not good. Review Source KW Kelsey W. Owner Relations Hospitality Used the software for: 2+ years ### "Customer Service is the BEST!" January 29, 2026 5.0 10/10 experience overall. OnSIP has been reliable, easy to use, and backed by outstanding customer support, making it a great solution for our communication needs. Pros Their customer support is absolutely amazing. The team is responsive, knowledgeable, and always willing to go above and beyond to help resolve any issue quickly and professionally. Cons Honestly, I don’t have anything negative to say about OnSIP. Our experience has been consistently positive, and any questions or concerns we’ve had were handled promptly by support. Review Source ME Maribel E. Office Management Religious Institutions Used the software for: 2+ years ### "Great Customer Service/Solutions" December 9, 2025 5.0 I had so many questions, from reports to finding different issues of our own, and it was such an amazing support. Pros Communication and learning curve. The menu is there, but the support to learn the menus and issues in the situation was excellent Cons Nothing, I believe they are in the right course in training for the issues you may have. Professional, personal, courteous, and aware of the situation. Great training. Review Source SA Silvia A. Tax Accountant Accounting Used the software for: 2+ years ### "Phone Support" January 10, 2026 5.0 Great people with extensive knowledge of the phone system. It was easy to ask my questions and receive easy instructions. Pros The phone support was exceptional in my call today. I had questions about updating the phone lines, adding an 800 number that worked immediately & assisted me in call forwarding & connecting my answering service to our Cons Your phone support is very knowledgeable & I was able to speak to a person. The phone support was able to guide me in clear English. Review Source SS Sheila S. Front Desk Services Financial Services Used the software for: 1-2 years ### "ONSIP Phones" December 9, 2025 4.0 Positive. It works. We've had relatively few issues with phone service, and when something has occurred or a question has come up, the customer reps have offered polite and helpful service. That means a lot. Pros It works. We've had relatively few issues with phone service, and when something has occurred or a question has come up, the customer reps have offered polite and helpful service. That means a lot. Cons While I realize the variation of internet providers plays into some issues, I would like the people who work from home to have more reliable service. The often have to log out and login again to keep their ONSIP working remotely. We also have issues with transferring calls/often needing to hang up and give it a second try. Review Source JG Josephine G. Office Admin Maritime Used the software for: 2+ years ### "overall, very happy with OnSip" January 7, 2026 5.0 I've had good experience with OnSip. Any question I have is always answered and they don't rush you off the phone, they seem eager to make the experience positive. Pros Very user friendly company. Helpful over the phone. They answer when you call, a live person, eager to help. Cons web app a little confusing. some technical things I don't get and may never. Totally wish they had better selection of music on hold. Review Source MP Marianna P. Executive Manager Financial Services Used the software for: 2+ years ### "Reliable, User-Friendly VoIP Solution for Business" December 9, 2025 5.0 Overall, my experience with OnSIP has been very positive. It’s a dependable phone system that works well for daily business communication. I love being able to pick up the phone for support and speak with a human Pros OnSIP is incredibly reliable and easy to use. Call quality is consistently clear, and the system is simple to manage, even without advanced technical knowledge. The customer support team is responsive and knowledgeable, which makes a big difference when questions come up. Cons Occasionally, there can be a slight delay when speaking with someone. It doesn’t happen often, but it is noticeable from time to time. Review Source DV Dan V. Director of Operations Non-Profit Organization Management Used the software for: 2+ years ### "Stop looking and call OnSIP today!" July 22, 2025 5.0 Perfect, flawless, easy. If I don't have to worry about something, then I am happy. I have never had to worry about OnSIP! I love it so much, that we are going to use OnSIP for our remote office as well and our phone system will be even more unified. Pros Every time I have called OnSIP, I have had my question answered or issue resolved before ending the call. The team at OnSIP are friendly, professional, and knowledgable about their offerings. We have had no issues with OnSIP in the 3 years I have been working with them, and, from my understanding prior to my time here there were no issues. You never hear about that!! Cons I have absolutely nothing to put here. There are never any issues, customer service is amazing, and we don't have any issues with the service. There is absolutely NOTHING that I can put here that is negative. Review Source CW Chuck W. CEO Information Technology and Services Used the software for: 1-2 years ### "On Sip - small company review" January 26, 2026 5.0 Very accommodating. Works all the time. Phone support is excellent. Easy to use and configure. Tech Support is excellent Pros Works all the time. Phone support is excellent. Easy to use and configure. Tech Support is excellent Cons Basic plan cost. Porting is always a pain , though I have not had to perform any in the past months. Review Source GH Georgia H. Facilities Director Food Production Used the software for: 2+ years ### "Voip Service You Can Count On" June 1, 2023 5.0 OnSIP is great. I've never had a problem they couldn't fix. Customer service is fantastic. Tech support is amazing. Ease of use and a vast knowledge base. Pros OnSIP has the best customer service hands down. No matter what your issue is, from initial set up to random questions years later, they are always super helpful and find the answer for you. The voip service is great. Adding new users, features, equipment, etc is super easy! The best part is that they can do so much. From simple phone and voicemail to complicated PBX auto attendant phone trees. Cons Very few cons. The mobil app isn't the best. Sometimes it doesn't work and there's not a ton of features with the app. The only other con I can think of is it would be nice if there was a text option with the service. Alternatives considered [Google Voice](https://www.capterra.com/p/210592/Voice/) Reason for choosing OnSIP Best option Review Source AO Ana O. Admin Assistant Real Estate Used the software for: 2+ years ### "Reliable VoIP with Top-Notch Support" June 13, 2024 5.0 Their exceptional customer service and feature-rich platform has been a major benefit for our company. While there's always room for improvement, like having a more intuitive search function for call transfers, the overall value and reliability of OnSIP make it a great VoIP solution. Pros OnSIP's web portal and mobile apps are known for being user-friendly for both administrators and regular users. If you found the system easy to navigate and manage, this is a noteworthy advantage. Cons While OnSIP offers a wide range of features, finding contacts for call transfers could be smoother. Ideally, a more intuitive search function within the existing contact list would expedite the transfer process. Review Source RG Raymond G. School Administrator/Group Practice Coordinator Higher Education Used the software for: 2+ years ### "OnSIP review" June 9, 2023 4.0 Pros Ease and general clarity. Customer service/tech support Cons Sometimes connections are problematic and it's not always clear to me why. The fact that (unless this has changed) integration with iDevices is problematic (not for me, but for several of our users).I'd be interested to know whether OnSIP would integrate with our EMR Review Source SB Stephanie B. Business Development Director Financial Services Used the software for: 1-2 years ### "OnSip Review" June 6, 2023 5.0 The mobile application is great. I also like that I do not need to use the receiver when talking, the call comes over your computer speakers. Pros The mobile application is very useful. It's easy to receive and make calls from anywhere. Cons Some of the features, like call transfer, are not intuitive for employees who do not often transfer calls. Review Source SB Scott B. IT Manager Electrical/Electronic Manufacturing Used the software for: 2+ years ### "An excellent choice if you are willing to invest the time into setup & configuration" June 6, 2023 5.0 In the few cases where we needed support, it was resolved quickly with knowledgeable staff that did not require buying new equipment or services. Pros The capabilities you are able to access without hosting any equipment other than your endpoint phones is amazing. Cons Good setup & configuration require a better than average grasp of IT and telephony, but this should be expected when deploying any scalable system with these capabilities. Review Source SG Seth G. Bookkeeper/IT Construction Used the software for: Less than 6 months ### "Ease of use and set up" June 9, 2023 5.0 Pros It was easy to set up, once we had all the kinks worked out.OnSip personal were a pleasure to work with for implentation Cons Some of the features aren't avaialble that our old phone system used. The ability to keep phones on OnSIP boot server not working because of features that need to done by Yealink phones. We should of gone with the Polycom phones. Alternatives considered [RingEX](https://www.capterra.com/p/242188/RingCentral-MVP/) Reason for choosing OnSIP Price much lower with OnSIP Review Source RA Richard A. Executive director Museums and Institutions Used the software for: 2+ years ### "Compromises but overall good value" June 1, 2023 4.0 We moved to OnSIP directly from wired phone service and reduce our costs while increasing features. Pros Ease of use, online console for managing system, ease of programming new phones Cons Persistent issues with certain telephone prefixes that will not route properly. Review Source ND Noam D. Director of IT Education Management Used the software for: 2+ years ### "Best value and support" June 6, 2023 5.0 It’s been tremendous and a great switch. We’ve left our old pbx system and we haven’t looked back Pros Tremendous value for a school. And the customer support has been top notch. Cons More voicemail options could be better. Alternatives considered [Vonage Business Communications](https://www.capterra.com/p/159047/Vonage-Business/)[Comcast Business VoiceEdge](https://www.capterra.com/p/230309/Comcast-Business/) Reason for choosing OnSIP Cost and features Review Source BL Bill L. Pres Legal Services Used the software for: 2+ years ### "Onsip - Good performance but way overpriced" June 6, 2023 5.0 Good company just very expensive Pros Dependable service - phones never go down. Also I have found Tech support is quite good. Some Tech suppt people such as Rochel have been superb! Cons The cost is very high. I only have two VOIP telephones. Yet the minimum monthly fee with the minutes of telephone use that I pay for I spend over $100 per month! Comparable service for two VOIP lines is about $50 per month total. Review Source JJ Josh J. Systems & Operations Manager Marketing and Advertising Used the software for: 2+ years ### "Great Product backed by Top Tier Customer Service " June 6, 2023 5.0 I have been the admin for around 1 year, and I am very happy to be able to manage my team with little to no headaches. Pros The quick and efficient setup of new employees Cons Hard to say, Phone tree setup seems to be a problem for me at the moment, but I haven't dug in to much. Review Source LC Leonard C. Head of Information Technology Environmental Services Used the software for: 2+ years ### "Reliable and good customer service. But we are losing usage to communications apps" June 6, 2023 4.0 To be honest, we find ourselves using Microsoft Teams for most internal calls, and even some customer calls. Users otherwise use their mobile phones and SMS.When the pandemic hit, everyone worked at home, and kind of weaned themselves off of using our VOIP desk phones. We are not maintaining them. Pros The 'apps'. We still use OnSip for our main company phone lines' 'auto-attendants'. Cons I have trouble with the mobile app on Android. When calls ring, it does not pop to the top, and I cannot answer.This might be an issue with my settings, as other apps have the same issue.I'd like to see Microsoft Teams integration. Review Source KS Kate S. Developer Used the software for: 2+ years ### "Easy to use, convenient, good-enough desktop app" May 11, 2018 4.0 Our connection has always been clear and it's been easy to quickly log in and make calls from other devices when necessary. Only wish would be for a more compact version of the desktop app that could be kept open. The existing app takes a fair amount of real estate on the screen. Pros Easy to move extensions or use the web app across various devices Desktop app is easy to install/setup Clean consistent connection Cons Wish there was a compact version of the desktop app that could be kept open and given screen space at all times when not using a separate phone Review Source VR Verified Reviewer Project Manager, Custom Content Publishing Used the software for: 1-2 years ### "Cloud Phone System Transformed How I Use My Work Phone" May 7, 2019 5.0 Pros Having voicemails sent straight to my email? Awesome. Being able to call from my office line but on my computer? Amazing. Having all my work contacts, extensions and call history across devices? It's great. Cons The mobile app seems underdeveloped in comparison to the web app and overall office phone. Review Source Similar Products Featured ## Send me user reviews about this product ### Fill out the form and we'll send a list of the top-rated software based on real user reviews directly to your inbox.