LDAP search not working

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Hi, I can't get the LDAP search to work with our Active Directory, always come back with 'No results' is the syntax correct, any ideas what I could be doing wrong...

LDAP Name Filter - (|(cn=%)(sn=%))
LDAP Number Filter - (|(telephoneNumber=%)(Mobile=%)(ipPhone=%))
Server Address - 192.168.100.245
Port - 389
Base - DC=domain,DC=local
User Name - domain\administrator
Password - *******
Max. Hits(1~32000) - 1000
LDAP Name Attributes - cn sn
LDAP Number Attributes - Mobile telephoneNumber
LDAP Display Name - %cn
Protocol Version3
Search Delay(0~2000)ms - 2000
Match Incoming Calls - Enabled
LDAP Sorting Results - Enabled
LDAP Lookup For Pre-dial/Dial - Enabled

Thanks

Nick