Hi,

 

You are currently using TLSv1/SSLv3 ECDHE-RSA-AES256-GCM-SHA384 256

Teams stopped using TLSv1/ TLSv1.1 and only allowing TLS1.2+

So change your kamailio TLS settings to enforce only it

method = TLSv1.2+

After restarting kamailio your team's connections should be good.

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