Telecom Circles
• O/o CGM Telecom, Tamilnadu Circle, Chennai
• O/o CGM Telecom, Kerala Circle, Trivandrum
• O/o CGM Telecom, Andhra Pradesh Circle, Hyderabad
• O/o CGM Telecom, Karnataka Circle, Bangalore
• O/o CGM Telecom, Maharashtra Circle, Mumbai
• O/o CGM Telecom, Gujarat Circle, Ahmedabad
• O/o CGM Telecom, Madhya Pradesh Circle, Bhopal
• O/o CGM Telecom, Rajasthan Circle, Jaipur
• O/o CGM Telecom, U.P. (East) Circle, Lucknow
• O/o CGM Telecom, Haryana Circle, Ambala
• O/o CGM Telecom, Himachal Pradesh Circle, Shimla
• O/o CGM Telecom, West Bengal Circle, Kolkatta
• O/o CGM Telecom, Bihar Circle, Patna
• O/o CGM Telecom, Telecom Stores, Kolkatta
• O/o CGM Telecom, Andaman & Nicobar Circle, Port Blair
• MTNL, Mumbai 

• ITI Limited, Electronic City Plant, Bangalore

• ITI Limited, Dooravaninagar, Bangalore

• ITI Limited, Kanjikode, Palakkad

• ITI Limited, Doorbhash Nagar, Rae Bareli

• ITI Limited, Mankapur, Distt. Gonda

• HTL Limited, Guindy, Chennai

• Punjab Communications Limited, Mohali, Chandigarh

• Electronic Corporation of India Limited, Hyderabad

• United Telecoms Limited, Bangalore

• Alcatel India Limited, Gurgaon  

• Saint Gobain Glass India Ltd, Chennai  

• RCF, Kapurthala

• ICF, Chennai