°	Bharat Sanchar Nigam Limited (BSNL)
°	Department of Telecommunication (DOT)
°	Mahanagar Telephone Nigam Limited (MTNL)
°	Videsh Sanchar Nigam Limited (VSNL)
°	Indian Railways
°	Konkan Railway Corp. Ltd.
°	Power Grid Corporation of India Ltd. (PGCIL)
°	Gas Authority of India (GAIL)
°	Oil & Natural Gas Corp. (ONGC)
°	National Thermal Power Corp. (NTPC)
°	Indian Oil Corporation (IOC)
°	Bharat Electronics Limited (BEL)
°	Airport Authority of India (AAI)
°	Asea Brown Boveri Limited (ABB)
°	Larsen & Toubro (L & T)
°	Spice Telecom
°	Defense and Defense labs
°	State Electricity Boards
°	State Police Departments
°	MHA
°	HFCL, CGL
°	RAILTEL

°	Oracle Corporation, California, U.S.A.
°	Lorain Products, Lorain, Ohio, U.S.A.
°	VYVX Inc, Tulsa, Oklahoma, U.S.A.
°	FITEL, subsidiary of Fujitsu, Japan
°	CGHB,subsidiary of Hartmann & Braun
°	Hero Cycles, largest manufacturer of bicycles
°	India Today Group of Publications
°	VVXL India Limited
°	Department of Telecommunications
°	Indian Railways