VoIP Test (Speed - Jitter - Packet Loss etc)

Our VoIP test has been helping visitors test their Internet connection for VoIP compatibility for over 10 years. The previous version was Java based but all new browsers now prevent Java from running. For this reason we are proud to release our HTML5 version of our popular VoIP test.

In order to run the test, you must download some basic software. This is secure and safe and is needed simply because of HTML5 limitations in terms of its inability to support UDP.

Software for Windows
Software for MAC

Once the software is running simply refresh this browser window and you should see the Start Test button.

This test will take around one minute to complete. The results will include measured information for your Internet connection and consist of a jitter test, upload and download speeds, MOS score and a packet loss test. Use the "Click to start test" button below to start the VoIP test. Ask questions or add a comment about your results here.

Your browser does not support the HTML5 canvas tag.

If your results show five green circles then your Internet connection will support VoIP. If you have four green and then a yellow for consistency of service this is usally fine too. If you are not sure how to proceed, then read the following section on definitions to try to understand what your issue might be.

NOTE: If you see the message "We were unable to measure your connection's jitter/packet loss..." then the most likely issue is that a socket test cannot be initiated (it will do a HTTP/POST test instead of a socket test for speed). This can occur if the ports 20000 and 20001 are blocked for UDP packets (either by something in your setup or by your ISP).

Why is the Speed Slower than my ISP Plan?

The speed results will often be slower than the speed plan you are purchasing from your Internet provider. The reason for this is because we run an application test rather than a capacity test. In other words we are testing how fast an application can run rather than physical line speed. Most applications can only run a single connection so it is more accurate to run this kind of test as opposed to a capacity test which runs multiple connections and hides connection delays.

Technical Term Definitions

Bandwidth - This is a popular term and you have likely had your Internet provider try to up sell you to a higher "bandwidth" that will give you faster speeds for uploads and downloads to and from the Internet. This is typical displayed in Mbps (Mega bits per second) or Kbps (Kilo bits per second) with home Internet download speeds typically ranging from 3Mbps all the way up to 50Mpbs. it really depends on your needs and how much you are willing to pay every month. Also keep in mind that your upload speed will often be significantly less than your download speed. The good news is that for VoIP you only need around 90kbps worth of bandwidth so if you have a regular high speed connection such as DSL or cable, you should be in good shape.

Delay - If your delay is less than 100 milliseconds, your voice calls should consistently be of high quality. Even delays up to 400 milliseconds (as per ITU) can result in decent call quality.

Packet Loss - Any packet loss up to 5% will likely not be noticed by you when you are making calls. As these are digital packets it is often possible to have a packet loss of 0%.

Jitter - This is measured in milliseconds and is created by some instability in your connection. It is a fluctuation in the signal such that it becomes out of sync or displaced from where it should be in the transmission. It is effectively a continuous variation in the delay of packet delivery. VoIP jitter can be tolerated up to 20ms to 30 ms.

MOS Score - MOS stands for Mean Opinion Score and is actually a score given by a human user when evaluating the quality of voice. As it is an opinion, it is subjective. A MOS score of 4.0 or higher is desired.

SIP ALG - SIP Application Layer gateway is a feature in most routers and is supposed to help SIP based calls when going through your home or business router. Unfortunately it causes more harm than good. Make sure the VoIP test indicates N for NO. If it is Y for YES, try and disable it in your router as per our article on disabling SIP ALG. Then re-test.

Other Speed Test Considerations with VoIP

Even if you VoIP speed test results are good, you may still run into issues at some point with your voice calls. This can be due to a number of different reasons but is often caused by your internal network not being configured to prioritize the voice packets over all other packets. For example, if you are streaming video while someone else in the household is uploading some pictures to a cloud application, your bandwidth may be consumed by this video and data traffic, leaving very little room for your voice calls to get through. Think of your Internet connection as a pipe and only so much can fit through that pipe at one time. The way around this is to enable Quality of Service (QoS) on a home network router or telephone adapter, and set it to prioritize voice traffic to the Internet. This effectively reserves some room in your pipe such that you will always have room for your phone calls. For more information and help on potential setup, installation, configuration and ongoing issues, please visit our VoIP troubleshooting section.

Don't jump to conclusions and blame your VoIP provider for poor quality of calls as it may actually be an issue with your own home network.

VoIP Solutions

VoIP phone service has become a real option to millions of households in North America with the incredible speeds and reliability provided by modern day Internet service providers. Many home users see savings in excess of $500 per year on their phone bills. This is one great reason why people consider making the switch to VoIP phone service. Did the speed test above indicate that your internet connection was fast enough for VoIP? If so, check out the great deals available using the table on this page.

To find out more about residential (home) VoIP phone service visit our dedicated section to residential VoIP. Here you will find more information about VoIP for home phone users, including educational articles, provider comparison tables, user submitted reviews and more.

The savings don't stop with home phone service. Many businesses in North America are enjoying paying up to 80% less on their monthly phone bills after switching to a VoIP phone service. If your interest is in a VoIP solution for your business then check out our dedicated section to business VoIP. This provides access to many articles and whitepapers that can help with any questions you have, including FAQ's, service features guides and more. You will also have access to provider comparison tables, user submitted reviews and our free price quote service.


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WhichVoIP Visitor Comments

#45 : Posted by Arlene

My phone quality breaks up. Saw in Ooma brochure it could be an internet issue. Want to be sure I don't mess up more than I fix. I am using the Ubee DDW36C device.

-> Response: If you run the test on this page it now has a SIP ALG test, at the end does it say Y or N?
If it says Y next step is to look in the users guide for the Ubee DDW36C, section 6, you will see an option to disable SIP ALG (Advanced > Options). I would disable that and save the settings and re-test. Section 3 shows you how to login to the device to do this. ALG often causes issues such as this and may be the issue.


#44 : Posted by Ian Thompson

I've been using your wonderful product for some months simply to measure the quality of my line. Nowadays the "Voice over IP Simulation Progress" bar proceeds to the end of the bar but then goes back to the beginning of the bar and so on ad infinitum. Is this a bug?

-> Response: We just tested it in Chrome and Firefox and it all worked fine. Which browser and operating system are you using?
Did you download the latest software on that page just to be sure?


#43 : Posted by Jben

Excellent testing function, and write-up on meanings. Any chance that you have plans on making this available for Android connectivity testing?

-> Response: At this time it is not available for Android or iOS devices. There are some technical issues trying to get this running as an App on a smart phone but it is something we hope to have in the future.


#42 : Posted by Jben

Are there any plans to extend this to the Android community as there is probably a very large user base for VoIP there.

-> Response: Hopefully we will have something for Android soon. There is now support for Linux so progress is being made.


#41 : Posted by Dawn

Can you try out voip before getting rid of regular phone service landline ? To see if it's right for us ?

-> Response: Most providers have money back guarantees. A good option is to try it out but with a new phone number first and then when happy port over any existing numbers. Could save a lot of hassle.


#40 : Posted by Nancy

Hi, I ran the test and have all green circles. The problem is that I have an Ooma VOIP system and have terrible call quality. So, could it then be the quality of my phone or the fact that I don't have a router that specifically designates bandwidth to the phone? The calls sound fine on my end (but are extremely loud), however clicks, echoes and static observed on the other end. My router is the Spectrum business supplied router which is a Ubee DDW36c.

-> Response: If you have all green circles your Internet should have no issues with VoIP.
Is the call quality always bad? For example if you only have Ooma running on your network and everything else is off, still bad?
It sounds like this is an uplink issue. It may be the router you use and specifically SIP ALG. Often this is enabled by default on routers and causes all sorts of problems. I would ask Spectrum to disable SIP ALG, or do it yourself if you are tech savvy.


#39 : Posted by Jason

What does consistency of service mean and how do I fix that? I am receiving 52.7% and probably receiving poor sound quality because of it.

-> Response: Who do you use for your internet and is it wireless?
This is a measure of how consistent the speed is over time. For example, if your speed is 5Mbit/s but every few seconds it drops to 100kbits/s for 1 second that would be poor for VoIP but the overall average speed would be decent. Likely you would experience audio issues during a VoIP call due to lost packets. MBR /> There is normally not much you can do about this as it is a reflection on how good your Internet service is. You could ensure everything else is shut off on your local Internet at home and plug a laptop straight into your modem and try again just to make sure nothing else running on your network at the same time.


#38 : Posted by Ruben Nieves

Do you have a test tool, that can test the origin and destination of the VOIP path. At the present time, it is very hard to know if it is my network or the actual VOIP provider.

-> Response: Unfortunately there is no way for us to do that, that sort of test would need to come from your provider.
Our test is a good test for your Internet and local network though so if you are seeing good results then worth mentioning this to your provider.


#37 : Posted by Brian Moore

I did not see any results for sip alg. I know I it is now enabled so shouldn't I see results when I run this test

-> Response: You need to run our Java version of the test to see SIP ALG results.


#36 : Posted by Blaine Byers

I ran the HTML5 test 3 times. Each time I got 6 green circles and 1 Red circle. The red was Consistency of Service = 30%, sound is likely to be broken. You do not address COS in your technical terms definitions. I also did not get any SIP/ALG value. Does the COS value mean I would not have good service with VOIP?

-> Response: You need to run the non-html5 test (java test) to get sip alg test results. It is not 100% accurate but if you let me know your modem/router I may be able to help.
Regarding Consistency of Service (CoS), who do you use for your internet and is it wireless by chance? This is a measure of how consistent the speed is over time e.g. if your speed is 3Mbit/s but every 3 seconds it drops to 50kbits/s for 1 second that would be poor for VoIP but the overall average speed would be reasonable. Likely you would experience audio issues during a VoIP call due to lost packets.



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