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Recommended
Chad C.
Farming, 51-200 employees
Used daily for 2+ years
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My justification for using SIP.us was simple: better pricing than anyone with similar features/ratings. My justification for using SIP.us when expanding to ALL voip: value and 2 years of uninterrupted service.
SIP.US provides rock-solid VoIP trunks. We used them for our first VoIP PBX deployment and have literally had zero problems with them. Their reliability to provide consistent service is imperative as we're a heavy voice user.
I have no complaints or negative experiences with SIP.us
Ron K.
Security and Investigations, 51-200 employees
Used daily for 2+ years
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We have a system that makes outbound calls via SIP. SIP.US gives us an independent communication separate from our corporate phone system.
The software provides real time reports. From time to time we receive complaints that a call didn't go through. We can pull a report and see if the went to the right phone number and if it was picked up.
Email notification with how many times all trunks are busy but it doesn't say when this happened.
Justin H.
Computer & Network Security, 11-50 employees
Used other for 2+ years
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Easy to use and setup. Customer service is great. Great team to work with.
Failures, issues and downtime: Too many to deal with for a service provider, lost VoIP clients due to Sip.us downtime that took too long to resolve. Cost of product is at a premium, yet quality of product is not.
Dr. Raymond R.
Telecommunications, 1-10 employees
Used daily for 2+ years
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We have utilized a number of providers and this provider is the most stable, responsive and reliable we have found.
SIP Services are very stablr. Redundant Facilities Minimum number of networl issues Excellent Connectivity Excellent and time efficient tech support Minimum number of configuration issues
We have found no problems or issues to report. Any issues we may have encountered were quickly resolved.
Greg A.
Information Technology and Services, 1-10 employees
Used daily for 2+ years
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SIP.US was a great find. I wanted to set up my own SIP trunk, run my own PBX, use my own IP phones. I thought the hardest part was going to be the SIP trunk. With SIP.US, it was actually the easiest part of the system to set up. Not one glitch, no surprises, and it is the most economical choice I could hope for.
Easy to set up, easy to use, easy to manage!
I have zero complaints! SIP.US was very easy to work with.
Steve B.
Business Supplies and Equipment, 501-1,000 employees
Used daily for 1-2 years
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My initial concerns were primarily regarding uptime and call quality and neither have been an issue in close to 2 years now. I've had to reach out to the support department on occasion and pleasantly surprised by their knowledgeable staff and responsiveness any time I've needed something.
The self-service aspect eliminates calling, quoting, back and forth emails.. just saves a ton of time when you know what you're trying to get done and have a limited timeline.
If alternative calling plans for lower entry costs were offered I'd definitely be using this in more locations.
Jon S.
Media Production, 1-10 employees
Used daily for 2+ years
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I was referred to them and used them to set up my trunks for my phone system. It was easy to set up and I havent encountered any problems.
It was easy to set up and after a couple of years of using it, I have never had a problem with it not working.
Can't think of anything. It was easy to use and there were no problems with it, even a couple of years later
Matthew C.
Information Technology and Services, 1-10 employees
Used daily for 2+ years
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They do what we pay for and have not even had to use their backup servers as the primary for has been rock solid.
SIP.US support team went above and beyond pre and post deployment to allow us to get our phone system up.
There was an increase in the price of the service a few years back but we really cant complain about going from $.01 to $.012 per min.
Aaron D.
Hospital & Health Care, 51-200 employees
Used daily for 1-2 years
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It's been a great experience overall with nothing really to care about. The service has been rock solid. Even during the DDOS attack that occurred earlier in 2022.
The ease of setup was fantastic and the documentation that they make for different PBX system makes setup a breeze.
The customer portal feels a little disorganized to me. I've had to poke around the menus for a couple of minutes trying to find something. Once I submitted a support request to find an option in the website.
Nick S.
Entertainment, 1,001-5,000 employees
Used daily for 2+ years
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It was easy to setup the SIP trunks using this system. The support team at SIP.US is outstanding they have guides and will assist you with setting up your gear. Also willing to work with you on custom solutions.
There is nothing I didn’t like everyone has been very helpful.
Nathan V.
Information Technology and Services, 1-10 employees
Used daily for 2+ years
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I have used SIP.US for my own SIP Trunking, and for two of my business clients. The service is fast and easy to setup. When I have had a technical issue, SIP.US support is quick to respond.
Easy to use, add/remove call paths, DIDs, etc.
I have nothing negative to say about SIP.US, the service has met/exceeded our needs.
Nate P.
Retail, 11-50 employees
Used daily for 2+ years
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The setup is dead simple. Started a free trial in 30 seconds. Was connected in less than 5 minutes testing the service. I had a couple of questions and support was fast with responses.
I haven't had any issues with the service and it has been exactly what I had expected to get when I signed up.
stefan b.
Real Estate, 501-1,000 employees
Used daily for 2+ years
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Overall SIP.us has been great. I continue to do business with them because of the quality of the service
Ease of use, and a user-friendly control panel
Price per channel is my only complaint. It can get pricey during my peak season when i turn up my channel count
Benny F.
Hospitality, 11-50 employees
Used daily for 2+ years
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The customer service dept is top notch. They are very knowledgeable and even when your phone vendor is giving you a hard time, they find a way to fix or create a workaround.
They price could be a bit more aggressive.
Fakhar Z.
Telecommunications, self-employed
Used daily for 6-12 months
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I'm working on my call center project from home and everything is going fine except the call rejection because of Capacity limit ended....
The call quality and unlimited US (48) and Canada were the main things which pulled me towards SIP.US. Calls quality is the best, there's no interruption, distortion, breakout or noise in the background.
No, for my requirements everything is fine except when I see the message "Capacity limit reached.......". I think it should be enough everything on each channel and there should not be any limit for busy signals.
Pete D.
Computer & Network Security, 1-10 employees
Used daily for 2+ years
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Very good. Tech support was always helpful even when it wasn’t a sip.us issue.
You answer your phone for customers when they call
Nothing. They were supper helpful and always went out of the way to solve an issue.
Brett B.
Religious Institutions, 11-50 employees
Used daily for 2+ years
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Sip.us sip truck was easy to set up with my freepbx system. Customer service is also excellent with any questions.
I don't have any complaints about sip.us.
Kurian G.
Religious Institutions, 1-10 employees
Used daily for 2+ years
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Ease of connectivity with FreePbx, etc. Top quality over VOIP.
Liked Everything!! Pretty much took an hour or two setup the trunk.
Tyler B.
Real Estate, 11-50 employees
Used daily for 1-2 years
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Super easy to setup an account and purchase numbers. Ability to set CID and 911 information. Customer service is quick with responses.
International Calling is a little tricky.
Kenneth W.
Computer & Network Security, 1-10 employees
Used daily for 1-2 years
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Had a problem setting up with my phone system (Xblue).... they were very helpful when i called and was working in 5min!
Easy to use and navigate. Call logging is excellent
Nothing negative to write really. The service is always working and price is more than right!
Ian M.
Research, 501-1,000 employees
Used other for less than 6 months
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We were affected by the fires in Malibu, CA and tried to implement this as a backup option to our copper PRI line that burned up along Pacific Coast Highway. The issue that prevented us from using this as a solution was the vendor not configuring our device correctly so my review does not reflect the software itself or the potential it had to solve our problem. My lack of a great rating focuses on the difficulty it took to get tech support to work with us when we needed it and the lack of self-service options available online.
The ordering and setup process was easy. It was fast and easy to work with the Billing group to resolve cancellation and refund. Obviously not software related, but you'll notice how they want you to focus on only software related questions.
Tech Support was not easily available and in a couple cases took way too long to respond, costing us money with vendors sitting around waiting to connect our system to SIP. Also, equally as irritating, you can only pay by credit card and after your purchasing group has made the initial payment you can't change the option via your online account and everything seems to have to go through their customer service group.
Robert O.
Building Materials, 51-200 employees
Used other for 1-2 years
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Fairly good. The Technicians and sales people gave me confidence in the process.
When setting up our system the Technical people at SIP.US worked with our Austrian Cisco Technician and we got both our North American Plants up and running ahead of schedule
I didn't know anything about SIP. I wish there had been a primer for the uneducated in this field available.
Nishaan A.
Computer & Network Security, 51-200 employees
Used daily for 6-12 months
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I tried lots of companies before sip.us. But after sip.us my searching has stop. Very happy doing business with sip.us
User interface could be better. So it would be easier to use it.
Shane G.
Marketing and Advertising, 51-200 employees
Used daily for less than 6 months
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As stated previously the whole process has been exceptional. The support team is phenomenal, they seem to have all the bases covered and are willing to go the extra mile in order to make the customers transition as easy as possible.
I really found that the experience as a whole was very easy. From the initial setup of a test trunk and DID to the porting of hundreds of DID's from our previous carrier.
If I had to find something I don't like, I would say that the user interface could use a little modernizing.
parsana d.
Hospital & Health Care, 201-500 employees
Used daily for less than 6 months
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If you're not technical, and I am not, then it's a steep learning curve. I didn't feel like the tech support was as good as it could be.
The potential savings and the sales reps weren't pushy. I initially was going with another provider, but their sales team incessantly called me to sign up when the hardware wasn't ready.
The lack of features and documentation were low points.