BSNL provides varies plans for Broadband services in India. The services includes Landline Broadband,Mobile broadband, Wimax broadband,Fiber Broadband and CDMA broadband etc..
Please follow the below link for more info regarding the broadband services:
http://www.bsnl.co.in:9080/opencms/bsnl/BSNL/services/broadband/index.html
payment : http://portal.bsnl.in/MobilePayments/aspxfiles/login.aspx
View Bills online:http://portalcc.bsnl.in/aspxfiles/BillEnquiry.aspx
Quick Pay : http://portal.bsnl.in/portal/aspxfiles/quickpaylandline.aspx
How to get BSNL broadband connection:
step1: Simply Fill up following Form shown in the BSNL site link http://udaan.bsnl.co.in/lead_input_form.php?sourceid=S_2&&sourcetype=BSNLWEBSITE
or
simply send SMS the following to 54141 (BSNL mobile)/ 9400054141 (other operators like airtel,vodafone,aircel..etc)
1. LL for land line
2. BB for BroadBand
3. LL+BB for LAndLINE and BROADBAND
4. OTHERS for any other like EVDO,WIMAX,3G DATA Card etc...
ex: send LL to 54141 for landline
For chennai specific BSNL connections : http://chennai.bsnl.co.in/