Snom m9 DECT Administrator's Manual page 27

Security
Note: The snom m9 is also able to present its X.509 Certificate for Client Identity Verification (CIV), a critical
risk mitigation measure that gives all participants confidence about who they are dealing with. For the Client/
Server verification to function, the validation server must have a valid certificate with a domain name as the CN.
Also, the same domain name must be provided to the snom m9 as the SIP server or auto-configuration server.
To view the trusted root CAs on the base, click Status > Network.
Client Certificates
Each snom m9 base station comes equipped with a unique X.509 certificate signed by snom CA.
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