single active directory parameter for multiple livelink instances

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Is it possible that a single active directory parameter can be used to synchronize users in two or more separate instances of Livelink(Directory Services 3.0.0,Livelink 9.7.1)e.g Livelink instances areLL1LL2and active directory parameter isIPphoneand we can set "User Search Filter" in such a way that based on its value we can use it for more than Livelink instances.based on its value we can use it for 1 or 2 but perhaps not for both together at the same time as per my understanding.e.g ipphone is set in active directory as 'val1' then user will be synchronized in livelink instance LL1 and if its set as 'val2' then user will be synchronized in instance LL2 but what if that user need access for both then what can be solution?OR we have to use separate active directory parameter for each instance e.g IPphone for LL1 and Fax for LL2.