Network Troubleshooting
If you have a simple Internet setup with your own router, please follow the steps below. If you use a shared connection, or have a complex setup, please call us to be able to offer more specific assistance. If you have an IT support company, its usually best to give them a call, as they can help troubleshoot your networking issues for you.
Test your network
If you are having random issues with your phones dropping out, its usually caused by network settings, our testing tool can help find the issue causing it. If you are unsure how to use this tool, please call for support assistance. Run Testing Tool
Router Settings
Setting on your router can cause networking issues.
SIP ALG Setting
SIP ALG is a tick box setting on most routers that cause stability issues. By default many routers come with this ticked, but its a simply task to solve. Just login to your router, look for the SIP ALG tick box, untick it, save and your issues will probably be resolved.
Disabling SIP ALG on Technicolor Router Guide
Firewall Setting
If you have a firewall on your router, or separate hardware or software firewall and they are locked down, you may need to add additional firewall rules to allow the phones to work. Please download our firewall guide to ensure your firewalls are allowing the correct traffic through. Firewall Rules Setup
POE Switch Issues
If you use a POE switch to power your phones (this is where your phone doesn’t have its own power supply) you may get strange issues with your phones. Sometimes, the phones can behave very strangely if they are not getting enough power from your POE switch. Phones can randomly reboot, drop calls, only answer some calls and cause sound issues due to limited POE power. Check your make and mode of POE and get in touch with support to find out if that might be the issue. We can send power supplies to help isolate the problem.
Supplier Issues
Please also review the following guides for supplier specific issues that you may be experiencing, if they are your internet provider.
Virgin Media VoIP Issue
Sky VoIP Issue
Wi-fi Troubleshooting
If you are experiencing issues when using Wi-Fi, it can be that your Wi-Fi is hitting a capacity limit, or your Wi-Fi is experiencing packet loss. Issues with Wi-Fi are generally not noticeable when simply browsing the Internet, but will show up when trying to do more intensive tasks, such as making a phone call.
The first step it to try the phone, or app via a network wire directly into your router. If that works, it demonstrates that it’s a Wi-Fi issues.
Changing the Channel
Solving Wi-fi issues can be done by first trying a different channel on your router. You can download an app onto your mobile phone to analyse the Wi-Fi channels in your location. Android Download Wi-Fi Analyser App. Middle range channels are best, but make sure you choose one that isn’t already in use.
Packet Loss Analysis
If Changing the channel doesn’t help your Wi-Fi, then you need to take a look for packet loss on your Wi-fi network. Download the app Android Download Ping Tester and call support with the results of the test.
Powerline Adapters
If you can’t get your Wi-Fi to be stable, consider using Powerline Adapters to create a wired network over your power supply. This allows you to turn any plug socket into a network port. You can then plug your computer and or your phone into this device and it connects it directly to your router. Most people find this gives them a much faster speed than Wi-Fi and much more stable connectivity.
Back to Troubleshooting
Updated on 25/05/2024 by David Wood
As senior cloud solutions architect at TelephoneSystems.cloud, with a degree in computing, I bring over 29 years of extensive experience in cloud technology.