Hi Mosharof.
1- create a phone security profile with the enable digest authentication check box ticked.
2-create end user locally.In version 9.X,even if you sync with ldap,the cucm user does not get erased.
3-If the user have to be in synchronized throough ldap,then create a user in ldap and use for example the extension of the third party phone as the samaccount name and for the password.
Example:userid:2323,password:2323,pin:2323 (Digest credentials:2323)
4-add the advanced third party phone type to be able to use more than one dn but you can use standard of course.
5-assign owner of the phone to be 2323 and choose the digest user 2323.
On the phone :
under configuration or sip don't remember so much ,add the required fields.
This should work.Try and update.
Regards,
Ahmed
