Summary

This guide helps you troubleshoot and resolve: How to Set Up Microsoft Teams Direct Routing for Your Brisbane Business Phone System. Follow the steps below to fix the issue.

Common Causes

How to Set Up Microsoft Teams Direct Routing for Your Brisbane Business Phone System

Microsoft Teams Direct Routing allows your Brisbane business to connect your existing telephony infrastructure to Microsoft Teams. This enables you to make and receive external calls directly within the Teams app, replacing traditional desk phones and reducing reliance on separate phone systems. This guide walks you through the setup process for small business and home office users.

Prerequisites

Before beginning, ensure you have the following:

• A Microsoft 365 subscription that includes Phone System licenses.
• Teams licenses assigned to all users who require external calling.
• A Session Border Controller (SBC) certified for Microsoft Direct Routing.
• Public SIP trunk credentials from your telephony provider.
• Administrator access to the Microsoft Teams admin centre.

Configuration Steps

Step 1: Assign Phone System Licenses

1. Sign in to the Microsoft 365 admin centre.
2. Navigate to Users > Active users.
3. Select the user requiring Direct Routing.
4. Under Licenses and apps, ensure the Phone System license is assigned.
5. Click Save changes.

Step 2: Configure the Session Border Controller (SBC)

1. Log in to your SBC management interface.
2. Create a SIP trunk pointing to the Microsoft Teams Direct Routing FQDN provided in the Teams admin centre.
3. Configure the following settings:
   • SIP Transport: TLS
   • Media Transport: SRTP
   • Signalling Port: 5061
4. Open the required firewall ports on your Brisbane office router to allow SIP and RTP traffic between the SBC and Microsoft Teams.

Step 3: Connect the SBC to Microsoft Teams

1. Open the Microsoft Teams admin centre.
2. Go to Voice > Direct Routing.
3. Click Add to register a new SBC.
4. Enter the FQDN of your SBC.
5. Configure the SIP trunk settings as provided by your telephony provider.
6. Click Save. Microsoft will validate the connection to your SBC.

Step 4: Assign Phone Numbers to Users

1. In the Teams admin centre, go to Voice > Phone numbers.
2. Select the number you wish to assign.
3. Click Assign and search for the user.
4. Select the user and click Save.

Step 5: Enable Users for Direct Routing

1. Open PowerShell with the Microsoft Teams module installed.
2. Run the command: Grant-CsOnlineVoiceRoutingPolicy -Identity "UserName" -PolicyName "YourRoutingPolicy"
3. Verify the user is enabled for Enterprise Voice and Direct Routing.

Step 6: Test External Calling

1. Open the Microsoft Teams desktop or mobile app.
2. Click the Calls tab on the left sidebar.
3. Dial an external phone number using the dial pad.
4. Verify the call connects and audio is clear in both directions.

Troubleshooting

Calls Fail to Connect

• Verify that the Phone System license is assigned to the user.
• Check that the SBC FQDN is correctly entered in the Teams admin centre.
• Confirm that TLS and SRTP are enabled on the SBC.
• Ensure firewall ports 5061 (TLS) and the media port range are open.

One-Way Audio or No Audio

• Check that SRTP is configured correctly on both the SBC and the Teams client.
• Verify that your network allows UDP traffic for RTP media streams.
• Test from a different network to rule out local router issues.

If you encounter issues during setup, contact your IT support provider for assistance.

For related email troubleshooting, see our guide on Email not sending or receiving.

Still Having Issues?