Modem Model no is: T2-A-Gawv1.4U10Y-Bl
See signature link "Teracom" below for similar models.
If connecting OK, do not change anything, and contact me or @meetdilip ( send Private Message) in the night to check the modem router settings. ONLINE>
Take a print out of these screen shots and try to set/check/study the modem yourself.
Try to change Mod mode to GDMT.

Links:

http://www.indiabroadband.net/attach...ale-modems.jpg

Step by step instructions. REcheck settings.

http://www.calcutta.bsnl.co.in/dataoneinstall/mu12.html

with screen shots:
http://newssignal.blogspot.com/2010/...onnection.html

With clear instructions: screen shots:
https://docs.google.com/present/view...njx_14fhxf7xcf