Extension of BSNL Prepaid plans validity can be done through SMS sending

BSNL improvised its services by enabling options for customers to increase their validity using SMS services. BSNL alerts to all its prepaid customers through SMS one week before Prepaid plan expiry period reaches i.e before Grace Period-1 starts or customer prepaid plan entering into GP1, message in the format as:
Dear Customer, Your plan validity expires on DD-MM-YY. Please get it extended by using plan voucher of Rs…./- immediately”
On receiving SMS from BSNL customer who are having sufficient balance in their prepaid main account for extension of validity 2-3 before expiry of prepaid plan validity.
“Dear customer please send <CONTINUE> to 53733 for extending plan validity by ….. days with effect from DD-MM-YY by BSNL after deducting Rs……/- from main Prepaid account balance”.
SMS content for those customers not having sufficient balance in their prepaid account, 2-3 days before expiry of plan validity:-
“Dear customer, please recharge your prepaid account and send <CONTINUE> to 53733 for extending plan validity by ….days with effect from DD-MM-YY by BSNL after deducting Rs…../- from main account prepaid balance”.

Validity extension on 1st day of GP1 (Grace period 1) immediately after the expiry of prepaid plan validity:
The customer who did not extended validity as above are due for entering into GP1 after the expiry of customer plan validity. The customer who are having sufficient balance in main prepaid account can opt this method to extend validity, in the absence of response or inaction by the customer, the plan validity of the customer may be extended on the 1st day of GP1 state after deduction of the plan voucher amount of the existing plan from the account balance and intimated accordingly.
All other terms and conditions will remain the same.