BSNL First Recharge Coupon is FRC and also termed as Plan Voucher or Plan Recharge, and this should be used for first time activation of a new mobile number, and also different types of FRC can be used for validity extension / migration to other plan under BSNL GSM Services.
There are many First Recharge Coupons for limited and unlimited usage under voice and data services, Some of the FRC’s are launched by BSNL Corporate and some by Circles as per the local competition
Have a look at different types of BSNL FRC available in different circles (AP/Telangana: Nestham, Amulya, Karnataka : Nimagagi Ananya, Tamil Nadu : New Vasantham, Nesam Gold, Assam : Luit Lo Plan, Mitra)
Find here about >> Different Types of FRC available in BSNL circles
Yes, all the prepaid recharge plans allows BSNL free calls in national roaming, but some tariffs only allow free from Mumbai and Delhi, where the frequent travelers of national roaming area can avail any from the list of BSNL prepaid plans, so choose your best.
BSNL Grace period (GP1 and GP2) of 15 + 165 days are allowed to recharge and reactivate the GSM mobile services
There are three options to do FRC for normal and BSNL MNP customer, they are
1. Online Recharge
2. My BSNL App
3. Easy Recharge available with BSNL Retailer
Any prepaid mobile plan under GSM services didn’t give any free recharge on subscription but allow some free talk time accordingly.
Without doing FRC (i.e. Basic Plan), a prepaid mobile customer of BSNL does not allowed to make the calls to any network.
If having the sufficient balance in prepaid mobile, the validity will extend automatically as per the condition.