To get the best video and calling experience on Microsoft you need an internet connection that can support Microsoft Teams.
You also want to make sure that your computer can reach the Microsoft 365 server.
To follow these steps, you need to have a license with one of the following subscriptions:
Microsoft recommends that you don't use more than 30 percent of your total internet connection speed.
For example, if your Internet connection is 60 Mbps, Teams and Business Voice should use no more than 18 Mbps.
Use this equation to determine your minimum Internet connection speed: <highlighted number> / 0.3.
With the number that's highlighted in the preceding image, the calculation is 4.6875 / 0.3 = 15.6. In this case, the Internet connection speed should be at least 15.6 Mbps.
If Teams and Business Voice will use more than 30 percent of your total Internet connection speed, the highlighted number will appear red. In that case, you may need to upgrade your Internet connection.
Follow these steps:
Computers and devices that use Business Voice must use specific network ports to communicate with Microsoft 365 servers. These ports are essentially doors through which devices talk to each other over a network or the Internet. Your firewall needs to allow devices on your network to reach Microsoft 365 through the following outbound network ports:
The easiest way to check whether your firewall allows communication on these network ports is to make a test call in Teams:
If you're an IT professional and want more information about how to prepare larger or more complex networks to support Business Voice, see Evaluate my environment.
This article provides information about bandwidth, proxy and firewall requirements, and how to use the Network Assessment Tool to test your network.
Switch4Teams Ltd is a UK-based, award-winning Unified Communications provider with over 20 years of experience.
Our voice over IP (VoIP) internet-based telephony, Microsoft Teams Direct Routing and UC cloud communication solutions are currently used by 1,000’s of SMEs and partners across the UK.