GetUserDialNumber
GetUserDialNumber(UserId As String/Integer, nMediaId As Integer, sNumber As String) As Integer
Gets in <sNumber> the first active call number of the user <UserId> with the specified media <nMediaId>. <UserId> can be the numeric object id of the user or his name, according with the parameter type (Integer or String).
The returned value is 0 if succeeded, 8 if the user identifier is invalid.