:) Full talk-time on Rs.220, Rs.2000, Rs.2200, Rs.2500 & Rs.3000. Extra talk-time on Rs.550 (talktime-575), Rs. 1100 (talktime-1200) , Rs.3300 (talktime-3500) & Rs.5500 (talktime - 6000)

BSNL SMS Codes

You can activate SMS vouchers, GPRS packs, 3G data RCVs offered by BSNL through SMS. Cost of the voucher will be deducted from your main account balance. 

Here is the list of some of the codes though it is not complete, if you know any other codes please let me know. For activating STV by SMS see special tariff vouchers page

Data Service Activation/Deactivation:

Send START to 1925 for activation
Send STOP to 1925 for deactivation

STV Balance & Validity:

Send STVENQ to 123

GPRS/3G/MMS Settings:

Send <make> <model> to 58355
Ex: Nokia 6300 to 58355

National Do Not Call Registry:

Send START DND to 1909 to activate
Send STOP DND to 1909 to deactivate

Mobile Signal Complaint:

Send SIGNAL to 9400054141

Deactivate Unwanted VAS Service:

Send STOP to 155223 to deactivate

ISD Calling for Prepaid:

Send ACT ISD to 53733 to activate
Send DEACT ISD to 53733 to deactivate 

Mobile TV:

Send MYTV to 55447(not toll free) for 2G customers
Send MY3GTV to 55447(not toll free) for 3G customers

BSNL Caller Tunes:

Send BT ACT to 56700(Rs.2/SMS) for activation
Send BT DACT to 56700(Rs.2/SMS) for Deactivation
Send <song code> to 56700(Rs.2/SMS) for song selection with code
Send <song name> to 56799(toll free) for song search

POSTPAID:

Send BILL to 53733 for getting the last bill amount
Send AMT to 53733 for getting the usage amount
send email Email-id to 53733 for getting mobile bill by email.