. . . EXHIBIT 21.1 SUBSIDIARIES OF THE REGISTRANT <Table> <Caption> COUNTRY OF INCORPORATION OR SUBSIDIARY ORGANIZATION ---------- ---------------- CoSine Communications Australia Pty Ltd Australia CoSine Communications Argentina Srl Argentina CoSine Cayman Ltd Cayman Islands CoSine Communications Finland Oy Finland CoSine Communications Sarl France CoSine Communications Deutschland GmbH Germany CoSine Communications Hong Kong Ltd Hong Kong CoSine Software (India) Private Limited India CoSine Communications Italia Srl Italy CoSine Communications KK Japan CoSine Communications Malaysia Sdn Bhd Malaysia CoSine Communications BV Netherlands CoSine Communications Singapore, Pte Ltd Singapore CoSine Communications Espana SL Spain CoSine Communications Sverige AB Sweden CoSine Communications Ltd United Kingdom </Table>