This post addresses inconsistencies with how Communicator Web Access 2007 R2 (CWA) implements normalization rules in relation to OC and other OCS clients. OCS 2007 introduced the concept of location profiles and normalization rules to convert phone numbers from one format to another, typically to E.164 formatted numbers with a prefixed ‘+’. A set of normalization rules are assigned to a location profile and within the location profile the rules can be ordered to control which rule will be applied first in case multiple rules can be used for a given phone number.

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