This parameter defines a translation rule for call addresses (such as telephone numbers). This translation rule is applied to the caller's number for 'RouteType' = 'clid' and to call destination number for 'RouteType' = 'trunk'. For all other values of 'RouteType' this parameter has to be empty. The string format of a translation rule is '<x:y>' (lenghts of the x and y strings can vary). A rule entry can contain multiple translation rules separated by ';'. The best matching translation rule is being used.