From your Aircel number, send the SMS as GPRS BP <first_three_letters_of_your_headset_name> <model_number> to 57788.
For ex: If you have Nokia 5700, then send the message as:
GPRS BP NOK 5700 to 57788
After sending the message, you will get the confirmation message. After that, you will get the settings which you have to save it. If you won’t get the settings after the 24 hours of sending the message, then contact the Customer Care.