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The next screen allows you to map the sipXconfig fields and the LDAP attribute.
'User ID attribute' is the unique is the unique user identification. Default value for it is 'ipPhone' but you should use 'uid' for other ldap servers but Active Directory.
'IM ID' is the instant message id. Default value for it is 'sAMAccountName' but you should use 'sAMAccountName' for Active Directory serveruid' for other ldap servers but Active Directory.
The next screen allows you to preview user records as they would be imported based on the query you just defined. 
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