- Ericsson India Ltd., New Delhi .
- Bharti Cellular Ltd.
- Bharti Mobile Ltd.
- Bharti Telenet Ltd.
- Hutchithoson Max Telecom
- Orange Mumbai
- Fascel Ltd., Gujarat
- Spice Telecom Ltd.
- Punjab Comm. Ltd., Chandigarh
- Escotel Mobile Ltd.
- Supreme Telecom Ltd.
- Global Telecom Ltd.
- Lucent Technologies Hindustan Ltd.
- Idea Celllular Ltd.
- Reliance Infocom Ltd.
- Siemens Public Communication Networks Ltd., Gurgaon
- Cellular Operators - Bharti / Essar/ Spice telecom/ Escotel/Ides/Orange/Fascel
- Hutcithson Max Telecom, Mumbai
- Airtel
- VSNL
- Nortel Networks
- Alcatel
- Nokia
- Tata Telecom
- Motorola
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- Andrew Telecommunications (I) Pvt Ltd , Goa
- Bharat Electronics Ltd, Ghaziabad . (ITI)
- Indian Telephone Industries Bangalore
- HFCL satellite Comm. Systems Ltd, (HFCL)
- Bharat Electronics Ltd., Bangalore
- Bharat Electronics Ltd., Ghaziabad.
- STPI, Noida
- JNU, New Delhi
- Essel Shyam
- Digital Microwave
- CPI India Pvt. Ltd.
- TV Today/Radio Today (Aaj Tak)
- SHAR Center , Sriharikota
- Zee TV
- Sharaha TV
- Essel Shyam
- Hughes
- Lamhas
- Blue Star
- Television 18
- HFCL
- ICOM
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- Hindustan Aeronautical Ltd. (HAL),
- Indian air Force (BRD’s & Different Units)
- ADE, DRDO
- DLJ, DRDO instead of DSI Jodhpur
- National Remote Sensing Agency (NRSA), Hyderabad
- Insat Master Control Facility, Hasan (MCF), ISRO
- SHAR Center , Sriharikota
- CAT, Indoor
- IPR, Ahmedabad -Atomic Energy.
- SAC, Ahmedabad.
- RCI, Imarat, DRDO
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