SQLSTATE[HY000] SQLConnect: 15

SQLSTATE[HY000] SQLDriverConnect: 0

try {

    $connection = new PDO("odbc:Driver={Teradata};Server={192.168.186.128};Database=dbc;User=dbc;Password=dbc;");
    /* also tried */
    // $connection = new PDO("odbc:TERA");

} catch (PDOException $e) {

    die('Failed to connect '. $e->getMessage());
}