Simple solutions to the most common VoIP problems

Simple solutions to the most common VoIP problems

Voice over Internet Protocol (VoIP) technology has revolutionized the way companies communicate, with its cost-efficiency, scalability, and ease of use. It's no wonder why there has been a surge in adoption across many industries. However, as with any type of technology, there are common issues that can arise when using VoIP systems. But don’t worry! In this blog post, we will explore what these problems are and, more importantly, how to solve them.

Poor call quality

Poor call quality is a common problem for VoIP users, and it can be caused by a number of factors. These include too many users sharing the same network bandwidth, inadequate hardware or software, and a bad internet connection. Here are a few things you can try to improve call quality:

  • Perform an internet speed test to ensure you have a good connection. If you're connected to Wi-Fi, try moving closer to your router or using an Ethernet cable for a direct connection.
  • Disable SIP ALG on your router, as this feature can interfere with VoIP traffic.
  • Restart your VoIP devices. If the problem persists, reboot your computer, router, and any other devices that are being used for VoIP calls.
  • Update your software and drivers to ensure compatibility with the latest version of VoIP.
  • The clarity of VoIP calls can be affected by background noise, so if you're in a noisy place, consider using a headset or finding a quieter spot.


Echo is another common issue on VoIP calls, and it's usually caused by feedback from the microphone to the speakers. This can be remedied by using a headset instead of relying on the speakers and microphone built into your computer. You can also try adjusting the audio levels on both the mic and speakers or using a noise-canceling feature or echo suppressor to minimize the problem.


There are several things that can result in hearing static on a VoIP call, such as interference on the line or connection problems. Generally, static occurs when there is an issue with the connection between the caller and receiver. To fix this issue, you can try resetting your router or modem, using a different network connection, and adjusting your audio settings.


Jitter refers to the variance in latency over a certain period, and it can bring about choppy or broken-up audio. Network congestion, latency, and packet loss can all be contributing factors, so you'll need to identify the root cause of the problem before it can be solved. Generally, this involves increasing network bandwidth or using a Quality of Service (QoS) function on your router to prioritize VoIP traffic.

Related reading: What type of business internet connection should you get?

One-way audio

One-way audio is when one party on a call can hear the other but the other cannot hear them. This is usually the result of a misconfigured firewall or network setting. You can try allowing VoIP traffic through your firewall and ensuring the proper port forwarding is configured on your router. If all else fails, you can try disabling your firewall entirely; however, this is not recommended, as it will leave your network vulnerable to attack.

Delayed audio

Delayed audio occurs when there is a noticeable delay between the time someone speaks and the time you hear them. This can be caused by poor network performance, such as low bandwidth or high latency on the line. To fix this issue, you can try using a wired connection instead of wireless, increasing network bandwidth, or using a QoS feature on your router.

Distorted audio

Garbled or distorted audio can make it difficult to understand what the other person is saying. This VoIP issue typically stems from a weak internet connection, so try performing a speed test to make sure you have enough bandwidth and check for any congestion on the line. You can also check your audio settings, as improper configurations can cause distortion, or restart your router and VoIP devices.

Dropped calls

Much like most other VoIP issues, dropped calls often occur due to network problems. If you're having this problem, try the same solutions listed above for dealing with poor connection quality. Additionally, you may need to upgrade your router or modem if they are unable to handle the increased traffic associated with VoIP calls.

Unable to receive or make calls

If you're unable to receive or make calls at all, the first step is to determine if the issue is with your VoIP provider or your device. Start by verifying that you have a valid account with your VoIP service, then check the settings on your device to make sure they are properly configured. If everything works fine on your end and you're still unable to receive or make calls, contact your VoIP provider to see if there is a known issue with their service or if they can provide further guidance.

Related reading: Are low-cost business VoIP phone systems worth it?

VoIP issues can be tricky to diagnose, but with some patience and a bit of troubleshooting, you can get your system up and running in no time. If you're unable to pinpoint the problem or resolve it on your own, don't hesitate to contact your VoIP provider for assistance.

outsourceIT can make sure your business VoIP phone system is properly configured and maintained so you can avoid these common issues. Contact us today to learn more about our services.

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