Hello, Thank you for your answer. It seems that now radius auth function is executed.Unfortunately, now I am receiveing a sip:user@domain not registered <Unauthorized> message for every user. The content of users.file [/etc/raddb/users]:e.g: usertest@<my_domain_name> Auth-Type := Digest, User-Password == "<user_password>" Reply-Message = "Authenticated"....... The content of radcheck table from radius DB:id | username | attribute | op | value------------------------------------------------------------------------------------------------------------------------------------14 | abcdef@<domain_name> | Digest-HA1 | := | f67erftg................... Attached you can find the logs, maybe you'll figure it out which is the reason of these errors. Thank you very much for your help! Br,