Now Indian Airlines also introduces i-Check-in
It gives you the freedom to check-in through the Internet on www.indianairlines.in. This Internet check-in facility is available 24X7 on all domestic flights. You can choose your seat online.
The online check-in is available for flights departing either on the same day or the next day. The passengers holding e-ticket, Dial-A-Ticket, net-ticket or Bid&Fly can check-in online up to two hours prior to scheduled departure of the flight. So, the next time when you travel by Indian, check-in online and ensure that you reach Security Check thirty minutes prior to the departure of the flight along with your photo ID.
Direct link for Indian Airlines Web Check In is http://203.94.240.250/Checkin.aspx
Contact Indian ticket counter or approved travel agent for e-ticket or call all India 24X7 flight helpline number 1407 or toll free number 1800 180 1407 from MTNL/BSNL phones for Dial-A-Ticket.
source: Flying Returns