@bluecat In our case the DNS A record for the SBC was misspelled.
For instance instead of sbc.contoso.com it was set as sbv.contoso.com, so it was not possible to reach, as teams was looking for sbc.contoso.com.
From what I understood this error comes from a misspelled SBC hostname, or unreachable DNS name.
We support Ukraine and condemn war. Push Russian government to act against war. Be brave, vocal and show your support to Ukraine. Follow the latest news HERE
