calendarData (cd) Namespace
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The Enhanced Presence elements in the calendarData(cd) namespace are used to specify calendar data and are defined in the calendarData.xsd schema file. The calendar data uses the data types defined in the ExchangeServices("http://schemas.microsoft.com/exchange/services/2006/types") namespace and the specification of the ExchangeServices data types can be found in the calendarDataTypes.xsd file. The namespace URL and the prefix are defined as follows: