Before installing the public certificate, you have purchased for your device to make it work with Microsoft Teams Direct Routing, you need to install the certificate(s) of the public CA of your certificate provider (to trust that public CA)

You need to install the certificates in the following order:

• Root CA cert
  
• First Intermediate CA (the one issued by the Root CA)
  
• Second Intermediate CA (the one issued by the First Intermediate FCA)
  

Below are the steps showing how to install the certificate of your CA

Go to Tasks Tab > SBC Easy Setup > Certificate > Trusted Cas Tab

Click on “Import Trusted CA Certificate”

 

The “Import Trusted CA Certificate” pops up

Click on “Mode” and select “File Upload”

It will change to “File Upload” mode

 Click on Browse

 

 Select the Certificate of CA file and click open

 The CA certificate will be uploaded.

Repeat the same steps if there is any intermediate certificate required by your certificate authority.

Installing Baltimore CA Certificate

If you are configuring your device to work with Microsoft Teams Direct Routing, Baltimore CA is required for communication with Microsoft Teams Servers over the internet. The device needs to trust this CA in order to have TLS communications with these servers.

User the same method mentioned above to install this certificate.