Exhibit 21.1 Subsidiaries of the Registrant Entity Name Country Polycom, Inc. (Parent) United States of America Atlas Communication Engines, Inc. United States of America ViaVideo Communications, Inc. United States of America Polycom Global, LLC United States of America Polycom Global, Inc. Barbados Polycom, K.K. Japan Polycom Hong Kong Limited Hong Kong Polycom Solutions Pte. Ltd. Singapore Polycom Global Pty. Ltd. Australia Polyspan, Ltd. United Kingdom Polyspan, B.V. Netherlands Polyspan, S.A.R.L. France Polyspan, GmbH Germany Polyspan, AS Norway