How to improve your internet connection for better call quality in Teams

A poor Internet connection can cause low-quality audio and video, delays, and dropped calls.
Below are some tips on how to improve your internet connection.

Choose the right Wi-Fi bandwidth

Choose 2.4GHz or 5GHz based on your home layout. Download a Wi-Fi Analyzer app that can check for Wi-Fi dead spots, congestion caused by too many devices connected, and any interference areas.

2.4 GHz

  • Pros: Longer range, better at going through obstacles (for example, walls), better support (more wireless devices support 2.4 GHz compared to 5 GHz).

  • Cons: Slower throughput, fewer channels that don’t overlap, more congested than 5 GHz networks because household devices (for example, microwaves and cordless phones) and Bluetooth devices use the 2.4 GHz network band.

5 GHz

  • Pros: Faster throughput, less congested channels, more channels that don't overlap.

  • Cons: Shorter range compared to 2.4 GHz networks, doesn't go through walls and other obstacles as well as 2.4 GHz networks, not as widely used by other devices.

Move the router to a central location

Minimize the number of walls and ceilings between the router and your device. Avoid being close to other electronic devices (microwaves, cordless phones, baby monitors), preferably in line of sight of your Wi-Fi devices. Get closer to the router or add a repeater to improve the signal strength. This also includes reducing potential interference from neighboring Wi-Fi signals.

Check your speed

For a high-quality video call, both you and the other participant need to have enough bandwidth. Do a speed test online (if you don't have an app, type speed test into your web browser and pick one) or ask your Internet service provider (ISP) to test your download and upload speed for you. Check the result against the speed your ISP is supposed to be providing. If you often have a slow Internet connection, ask your ISP for assistance in solving the issue.

Update your hardware

Regularly update the driver and firmware of your router and network adapter. Consider upgrading to a newer router and adapter with the latest Wi-Fi standards and higher gain antennas which supports heavy simultaneous usage from multiple devices better. It might be worth upgrading your hardware if all else fails.

Check with other participants

Remember, even if everything’s good at your end, the other participant might have a problem with their connection.

For network administrators

Below are some related resources for IT admins.

VPN

Guidance for Microsoft 365 and Teams: Implementing VPN split tunneling for Office 365 - Microsoft 365 Enterprise | Microsoft Docs

Antivirus, Firewall, and Proxies

M365 Connectivity principles - Microsoft 365 network connectivity principles - Microsoft 365 Enterprise | Microsoft Docs

Prepare Network for MS Teams - Prepare your organization's network for Teams - Microsoft Teams | Microsoft Docs

QoS

QoS Guidance - Implement Quality of Service in Microsoft Teams - Microsoft Teams | Microsoft Docs

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