Pawan Hans Limited

HMT (International) Limited

Chairman Shri. Pankaj Gupta Office Tel  +91 80 23339060 Office Address HMT Bhawan, 59, Bellary Road, Bangalore – 560032 Fax +91 80 23339048 Email contactus@hmti.com Website http://www.hmti.com

CENTRE FOR RAILWAY INFORMATION SYSTEMS (CRIS)

Chairman Smt. Anuradha Mukhedkar Office Tel +91 11 24104525, 24106717 Office Address Chanakya Puri, New Delhi – 110021 Fax +91 11 26877893 Email contactus@cris.org.in Website http://cris.org.in/CRIS/Home/Home

Telecommunications Consultants India Limited (TCIL)

Chairman Shri Sanjeev Kumar Office Tel +91 11 26202020 Office Address TCIL Bhawan, Greater Kailash-I, New Delhi – 110048 Fax +91 11 26242266 Email tcil@tcil-india.com Website http://www.tcil-india.com