Bsnl is on verge of copying Airtel. Firstly with 98 & 48 landline addon pack now Airtel family share pack.
Unlike Bsnl has introduced only few packs called community packs which allow data sharing.
You can add 4 additional members via online portal bsnl No additional charges for adding or deleting child account.
Everything would be managed by parent aka the one sharing the pack.
Child user who got their own data would get charged personal account first then from shared data pool.

Community data packs starts from Rs.173 and full community 3G pack details is as follows.
bsnl 3g data sharing pack