Incoming call blocking device for BSNL Landline

[Mario]

I am aware of commercially available call blockers for landline telephones in the US and UK, but can someone point me to something similar for BSNL landlines?
Haven't had any luck searching online! Anyone using something similar?

Are there land line models available that have inbuilt call blocker?

 

[shreymittal]

Just put the reciever on side and it will block your all incoming calls
AUTOMATICALLY.

 

[Ricky]

And that was funny...

However, using CLI phone, we simply do not pick call of unwanted / unwelcome person on landline.

 

[Mario]

Just to clarify, the requirement is to "bar" "specific" numbers (cell/landline) from ringing the BSNL landline!

 

[Dhanwantari Pancholi]

Just put the reciever on side and it will block your all incoming calls
AUTOMATICALLY.

Wow what an answer

- - - Updated - - -

Just to clarify, the requirement is to "bar" "specific" numbers (cell/landline) from ringing the BSNL landline!

Yes we want to block a particular number like in an Android phone