Active Directory Connector / Text Connector: Format of phone numbers

In which format do phone numbers have to be created in the Active Directory or in a text file in order to be automatically created in the XPhone Server using the Connector function?  

The connector first filters special characters such as round brackets, minus signs and slashes. The following formats are generally permitted: 

+49(89)123456-78  
0049-89-123456-78  
+49(0)89 123456-78  
089/12345678  
089.123456.78  
123456-78  
78 
etc. 

Short numbers such as the telephone number without area code (123456-78) or the extension number only (78) can only be used if there is only one PBX node in the XPhone server with only one dial parameter. The connector must be able to uniquely assign the call number to the PBX node.