EX-21.1 3 rbbn-ex21120211231.htm EX-21.1 Document

EXHIBIT 21.1

RIBBON COMMUNICATIONS INC.
SUBSIDIARIES OF THE REGISTRANT

NameJurisdiction of Incorporation
Laurel Networks Holdings CorporationDelaware
Network Equipment Technologies, Inc.
Delaware
Ribbon Communications Federal Inc.
Delaware
Ribbon Communications Operating Company, Inc.
Delaware
Sonus Networks, Inc.Delaware
GENBAND Inc.Massachusetts
ECI de Argentina SAArgentina
Ribbon Communications (Australia) Pty. Ltd.Australia
Ribbon Communications Belgium SPRLBelgium
ECI Telecom DO BrazilBrazil
Ribbon Communications do Brasil LtdaBrazil
Ribbon Communications Canada ULCCanada
Ribbon Networks Communications Chile LimitadaChile
Ribbon Communications Shanghai Co., Ltd.China
Sonus Networks (Shanghai)China
Hangzhou ECI Telecommunication Co. Ltd.China
ECI Telecom Sur America Lta.Colombia
ECI Telecom Costa Rica S.A.Costa Rica
Ribbon Communications Czech Republic s.r.o.Czech Republic
Ribbon Communications France EURLFrance
ECI Telecom (GmbH)Germany
ECI Telecom (HK) Ltd.Hong Kong
Ribbon Communications Hong Kong LimitedHong Kong
ECI Telecom India Private LimitedIndia
GENBAND Telecommunications Private LimitedIndia
Ribbon Communications Private LimitedIndia
Ribbon Communications Israel LimitedIsrael
Enavis Networks Ltd.Israel
ECI IT Ltd.Israel
ECI Telecom 2000 Enterprise Ltd.Israel
Lightscape Networks Ltd.Israel
Ritbal Ltd.Israel
ECI - Tadiran Syncoronous System Company (199) Ltd.Israel
ECI Telecom Group Ltd.Israel
ECI Telecom Ltd.Israel
Negev Telecom Lt.Israel
ECI WaveInno Ltd.Israel
Ribbon Communications Italy SRLItaly



Ribbon Communications K.K.Japan
ECI Telecom Kenya LimitedKenya
Ribbon Communications Malaysia Sdn. Bhd.Malaysia
Ribbon Communications Mexico, S. de R.L. de C.V.Mexico
GENBAND Canada B.V.Netherlands
ECI Networks Solutions B.V.Netherlands
GENBAND NS B.V.Netherlands
Ribbon Communications B.V.Netherlands
Ribbon Networks Communications B.V.Netherlands
ECI Telecom (PH), Inc.Philippines
ECI Telekom Polska sp.z o.o.Poland
ECI Telecom 2005 LLCRussia
Ribbon Communications Rus Limited Liability CompanyRussia
Ribbon Networks Saudi Arabia for Information TechnologySaudi Arabia
ECI Telecom (HK) Ltd. Singapore BranchSingapore
Ribbon Communications Singapore Pte. Ltd.Singapore
Ribbon Communications Spain SRLSpain
Ribbon Communications Switzerland GmbHSwitzerland
Ribbon Networks Ltd. Co.Taiwan
ECI Telecom Ukraine LLCUkraine
Ribbon Networks B.V. Dubai BranchUnited Arab Emirates
ECI Telecom (UK) LtdUnited Kingdom
N.E.T. Europe Ltd.United Kingdom
Ribbon Communications UK LimitedUnited Kingdom